CHM KA78XX/KA78XXA 3 Terminal 1A Positive Voltage Regulator 7805 Supply (Fairchild)

User Manual: CHM 7805 Supply Regulator (Fairchild)

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©2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.0
Features
• Output Current up to 1A
• Output Voltages of 5, 6, 8, 9, 10, 12, 15, 18, 24V
• Thermal Overload Protection
• Short Circuit Protection
• Output Transistor Safe Operating Area Protection
Description
The KA78XX/KA78XXA series of three-terminal positive
regulator are available in the TO-220/D-PAK package and
with several fixed output voltages, making them useful in a
wide range of applications. Each type employs internal
current limiting, thermal shut down and safe operating area
protection, making it essentially indestructible. If adequate
heat sinking is provided, they can deliver over 1A output
current. Although designed primarily as fixed voltage
regulators, these devices can be used with external
components to obtain adjustable voltages and currents.
TO-220
D-PAK
1. Input 2. GND 3. Output
1
1
Internal Block Digram
KA78XX/KA78XXA
3-Terminal 1A Positive Voltage Regulator
KA78XX/KA78XXA
2
Absolute Maximum Ratings
Electrical Characteristics (KA7805/KA7805R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =10V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in Vo due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Value Unit
Input Voltage (for VO = 5V to 18V)
(for VO = 24V) VI
VI
35
40 V
V
Thermal Resistance Junction-Cases (TO-220) RθJC 5°C/W
Thermal Resistance Junction-Air (TO-220) RθJA 65 °C/W
Operating Temperature Range (KA78XX/A/R) TOPR 0 ~ +125 °C
Storage Temperature Range TSTG -65 ~ +150 °C
Parameter Symbol Conditions KA7805 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 4.8 5.0 5.2
5.0mA ≤Io ≤1.0A, PO ≤15W
VI = 7V to 20V 4.75 5.0 5.25 V
Line Regulation (Note1) Regline TJ=+25 oCVO = 7V to 25V - 4.0 100 mV
VI = 8V to 12V - 1.6 50
Load Regulation (Note1) Regload TJ=+25 oCIO = 5.0mA to1.5A - 9 100 mV
IO =250mA to 750mA - 4 50
Quiescent Current IQTJ =+25 oC-5.08.0mA
Quiescent Current Change ∆IQIO = 5mA to 1.0A - 0.03 0.5 mA
VI= 7V to 25V - 0.3 1.3
Output Voltage Drift ∆VO/∆TI
O= 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA=+25 oC-42-µV/VO
Ripple Rejection RR f = 120Hz
VO = 8V to 18V 62 73 - dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 15 - mΩ
Short Circuit Current ISC VI = 35V, TA =+25 oC - 230 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
3
Electrical Characteristics (KA7806/KA7806R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =11V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7806 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 5.75 6.0 6.25
5.0mA ≤IO≤1.0A, PO≤15W
VI = 8.0V to 21V 5.7 6.0 6.3 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 8V to 25V - 5 120 mV
VI = 9V to 13V - 1.5 60
Load Regulation (Note1) Regload TJ =+25 oCIO =5mA to 1.5A - 9 120 mV
IO =250mA to750mA - 3 60
Quiescent Current IQTJ =+25 oC-5.08.0mA
Quiescent Current Change ∆IQIO = 5mA to 1A - - 0.5 mA
VI = 8V to 25V - - 1.3
Output Voltage Drift ∆VO/∆TI
O = 5mA - -0.8 - mV/
oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA =+25 oC-45-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 9V to 19V 59 75 - dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 19 - mΩ
Short Circuit Current ISC VI= 35V, TA=+25 oC - 250 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
4
Electrical Characteristics (KA7808/KA7808R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =14V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7808 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 7.7 8.0 8.3
5.0mA ≤ IO ≤1.0A, PO≤15W
VI = 10.5V to 23V 7.6 8.0 8.4 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 10.5V to 25V - 5.0 160 mV
VI = 11.5V to 17V - 2.0 80
Load Regulation (Note1) Regload TJ =+25 oC
IO = 5.0mA to 1.5A - 10 160
mV
IO= 250mA to
750mA -5.080
Quiescent Current IQTJ =+25 oC-5.08.0mA
Quiescent Current Change ∆IQIO = 5mA to 1.0A - 0.05 0.5 mA
VI = 10.5A to 25V - 0.5 1.0
Output Voltage Drift ∆VO/∆TI
O = 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA =+25 oC-52-µV/Vo
Ripple Rejection RR f = 120Hz, VI= 11.5V to 21.5V 56 73 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 oC - 230 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
5
Electrical Characteristics (KA7809/KA7809R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =15V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7809 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 8.65 9 9.35
5.0mA≤ IO ≤1.0A, PO ≤15W
VI= 11.5V to 24V 8.6 9 9.4 V
Line Regulation (Note1) Regline TJ=+25 oCVI = 11.5V to 25V - 6 180 mV
VI = 12V to 17V - 2 90
Load Regulation (Note1) Regload TJ=+25 oCIO = 5mA to 1.5A - 12 180 mV
IO = 250mA to 750mA - 4 90
Quiescent Current IQTJ=+25 oC-5.08.0mA
Quiescent Current Change ∆IQIO = 5mA to 1.0A - - 0.5 mA
VI = 11.5V to 26V - - 1.3
Output Voltage Drift ∆VO/∆TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA =+25 oC-58-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 13V to 23V 56 71 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 oC - 250 - mA
Peak Current IPK TJ= +25 oC-2.2-A
KA78XX/KA78XXA
6
Electrical Characteristics (KA7810)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =16V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7810 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 9.6 10 10.4
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 12.5V to 25V 9.5 10 10.5 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 12.5V to 25V - 10 200 mV
VI = 13V to 25V - 3 100
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1.5A - 12 200 mV
IO = 250mA to 750mA - 4 400
Quiescent Current IQTJ =+25 oC-5.18.0mA
Quiescent Current Change ∆IQIO = 5mA to 1.0A - - 0.5 mA
VI = 12.5V to 29V - - 1.0
Output Voltage Drift ∆VO/∆TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA =+25 oC-58-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 13V to 23V 56 71 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - mΩ
Short Circuit Current ISC VI = 35V, TA=+25 oC - 250 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
7
Electrical Characteristics (KA7812/KA7812R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =19V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7812/KA7812R Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 11.5 12 12.5
5.0mA ≤ IO≤1.0A, PO≤15W
VI = 14.5V to 27V 11.4 12 12.6 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 14.5V to 30V - 10 240 mV
VI = 16V to 22V - 3.0 120
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1.5A - 11 240 mV
IO = 250mA to 750mA - 5.0 120
Quiescent Current IQTJ =+25 oC-5.18.0mA
Quiescent Current Change ∆IQIO = 5mA to 1.0A - 0.1 0.5 mA
VI = 14.5V to 30V - 0.5 1.0
Output Voltage Drift ∆VO/∆TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA =+25 oC-76-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 15V to 25V 55 71 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 18 - mΩ
Short Circuit Current ISC VI = 35V, TA=+25 oC - 230 - mA
Peak Current IPK TJ = +25 oC-2.2-A
KA78XX/KA78XXA
8
Electrical Characteristics (KA7815)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =23V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7815 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 14.4 15 15.6
5.0mA ≤ IO≤1.0A, PO≤15W
VI = 17.5V to 30V 14.25 15 15.75 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 17.5V to 30V - 11 300 mV
VI = 20V to 26V - 3 150
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1.5A - 12 300 mV
IO = 250mA to 750mA - 4 150
Quiescent Current IQTJ =+25 oC-5.28.0mA
Quiescent Current Change ∆IQIO = 5mA to 1.0A - - 0.5 mA
VI = 17.5V to 30V - - 1.0
Output Voltage Drift ∆VO/∆TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA =+25 oC-90-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 18.5V to 28.5V 54 70 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 19 - mΩ
Short Circuit Current ISC VI = 35V, TA=+25 oC - 250 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
9
Electrical Characteristics (KA7818)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =27V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7818 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC 17.3 18 18.7
5.0mA ≤ IO ≤1.0A, PO ≤15W
VI = 21V to 33V 17.1 18 18.9 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 21V to 33V - 15 360 mV
VI = 24V to 30V - 5 180
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1.5A - 15 360 mV
IO = 250mA to 750mA - 5.0 180
Quiescent Current IQTJ =+25 oC-5.28.0mA
Quiescent Current Change ∆IQIO = 5mA to 1.0A - - 0.5 mA
VI = 21V to 33V - - 1
Output Voltage Drift ∆VO/∆TI
O = 5mA - -1 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA =+25 oC-110-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 22V to 32V 53 69 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC - 2 - V
Output Resistance rOf = 1KHz - 22 - mΩ
Short Circuit Current ISC VI = 35V, TA=+25 oC - 250 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
10
Electrical Characteristics (KA7824)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =33V, CI= 0.33µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions KA7824 Unit
Min. Typ. Max.
Output Voltage VO
TJ =+25 oC232425
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 27V to 38V 22.8 24 25.25 V
Line Regulation (Note1) Regline TJ =+25 oCVI = 27V to 38V - 17 480 mV
VI = 30V to 36V - 6 240
Load Regulation (Note1) Regload TJ =+25 oCIO = 5mA to 1.5A - 15 480 mV
IO = 250mA to 750mA - 5.0 240
Quiescent Current IQTJ =+25 oC-5.28.0mA
Quiescent Current Change ∆IQIO = 5mA to 1.0A - 0.1 0.5 mA
VI = 27V to 38V - 0.5 1
Output Voltage Drift ∆VO/∆TI
O = 5mA - -1.5 - mV/
oC
Output Noise Voltage VNf = 10Hz to 100KHz, TA =+25 oC-60-µV/Vo
Ripple Rejection RR f = 120Hz
VI = 28V to 38V 50 67 - dB
Dropout Voltage VDrop IO = 1A, TJ=+25 oC-2-V
Output Resistance rOf = 1KHz - 28 - mΩ
Short Circuit Current ISC VI = 35V, TA=+25 oC - 230 - mA
Peak Current IPK TJ =+25 oC-2.2-A
KA78XX/KA78XXA
11
Electrical Characteristics (KA7805A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 10V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO
TJ =+25 oC4.955.1
V
IO = 5mA to 1A, PO ≤ 15W
VI = 7.5V to 20V 4.8 5 5.2
Line Regulation (Note1) Regline
VI = 7.5V to 25V
IO = 500mA -550
mV
VI = 8V to 12V - 3 50
TJ =+25 oCVI= 7.3V to 20V - 5 50
VI= 8V to 12V - 1.5 25
Load Regulation (Note1) Regload
TJ =+25 oC
IO = 5mA to 1.5A - 9 100
mV
IO = 5mA to 1A - 9 100
IO = 250mA to 750mA - 4 50
Quiescent Current IQTJ =+25 oC-5.06.0mA
Quiescent Current
Change ∆IQ
IO = 5mA to 1A - - 0.5
mAVI = 8 V to 25V, IO = 500mA - - 0.8
VI = 7.5V to 20V, TJ =+25 oC--0.8
Output Voltage Drift ∆V/∆T Io = 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz
TA =+25 oC-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 8V to 18V -68- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 oC - 250 - mA
Peak Current IPK TJ= +25 oC-2.2-A
KA78XX/KA78XXA
12
Electrical Characteristics (KA7806A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 11V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO
TJ =+25 oC 5.58 6 6.12
V
IO = 5mA to 1A, PO ≤ 15W
VI = 8.6V to 21V 5.76 6 6.24
Line Regulation (Note1) Regline
VI= 8.6V to 25V
IO = 500mA -560
mV
VI= 9V to 13V - 3 60
TJ =+25 oCVI= 8.3V to 21V - 5 60
VI= 9V to 13V - 1.5 30
Load Regulation (Note1) Regload
TJ =+25 oC
IO = 5mA to 1.5A - 9 100
mV
IO = 5mA to 1A - 4 100
IO = 250mA to 750mA - 5.0 50
Quiescent Current IQTJ =+25 oC-4.36.0mA
Quiescent Current Change ∆IQ
IO = 5mA to 1A - - 0.5
mAVI = 9V to 25V, IO = 500mA - - 0.8
VI= 8.5V to 21V, TJ =+25 oC--0.8
Output Voltage Drift ∆V/∆TI
O = 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz
TA =+25 oC-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 9V to 19V -65- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 17 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 oC - 250 - mA
Peak Current IPK TJ=+25 oC-2.2-A
KA78XX/KA78XXA
13
Electrical Characteristics (KA7808A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 14V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO
TJ =+25 oC 7.84 8 8.16
V
IO = 5mA to 1A, PO ≤15W
VI = 10.6V to 23V 7.7 8 8.3
Line Regulation (Note1) Regline
VI= 10.6V to 25V
IO = 500mA -680
mV
VI= 11V to 17V - 3 80
TJ =+25 oCVI= 10.4V to 23V - 6 80
VI= 11V to 17V - 2 40
Load Regulation (Note1) Regload
TJ =+25 oC
IO = 5mA to 1.5A - 12 100
mV
IO = 5mA to 1A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQTJ =+25 oC-5.06.0mA
Quiescent Current Change ∆IQ
IO = 5mA to 1A - - 0.5
mAVI = 11V to 25V, IO = 500mA - - 0.8
VI= 10.6V to 23V, TJ =+25 oC--0.8
Output Voltage Drift ∆V/∆TI
O = 5mA - -0.8 - mV/ oC
Output Noise Voltage VNf = 10Hz to 100KHz
TA =+25 oC-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 11.5V to 21.5V -62- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 oC-2-V
Output Resistance rOf = 1KHz - 18 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 oC - 250 - mA
Peak Current IPK TJ=+25 oC-2.2-A
KA78XX/KA78XXA
14
Electrical Characteristics (KA7809A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 15V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO
TJ =+25°C 8.82 9.0 9.18
V
IO = 5mA to 1A, PO≤15W
VI = 11.2V to 24V 8.65 9.0 9.35
Line Regulation (Note1) Regline
VI= 11.7V to 25V
IO = 500mA -690
mV
VI= 12.5V to 19V - 4 45
TJ =+25°C VI= 11.5V to 24V - 6 90
VI= 12.5V to 19V - 2 45
Load Regulation (Note1) Regload
TJ =+25°C
IO = 5mA to 1.0A - 12 100
mV
IO = 5mA to 1.0A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQTJ =+25 °C-5.06.0mA
Quiescent Current Change ∆IQ
VI = 11.7V to 25V, TJ=+25 °C--0.8
mAVI = 12V to 25V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆TI
O = 5mA - -1.0 - mV/ °C
Output Noise Voltage VNf = 10Hz to 100KHz
TA =+25 °C-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 12V to 22V -62- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 °C-2.0-V
Output Resistance rOf = 1KHz - 17 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25°C-2.2-A
KA78XX/KA78XXA
15
Electrical Characteristics (KA7810A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 16V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO
TJ =+25°C 9.8 10 10.2
V
IO = 5mA to 1A, PO ≤ 15W
VI =12.8V to 25V 9.6 10 10.4
Line Regulation (Note1) Regline
VI= 12.8V to 26V
IO = 500mA - 8 100
mV
VI= 13V to 20V - 4 50
TJ =+25 °C VI= 12.5V to 25V - 8 100
VI= 13V to 20V - 3 50
Load Regulation (Note1) Regload
TJ =+25 °C
IO = 5mA to 1.5A - 12 100
mV
IO = 5mA to 1.0A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQ TJ =+25 °C-5.06.0mA
Quiescent Current Change ∆IQ
VI = 13V to 26V, TJ=+25 °C--0.5
mA VI = 12.8V to 25V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆T I
O = 5mA - -1.0 - mV/ °C
Output Noise Voltage VN f = 10Hz to 100KHz
TA =+25 °C-10-
µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 14V to 24V -62- dB
Dropout Voltage VDrop IO = 1A, TJ =+25°C-2.0-V
Output Resistance rO f = 1KHz - 17 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25 °C-2.2-A
KA78XX/KA78XXA
16
Electrical Characteristics (KA7812A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 19V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO
TJ =+25 °C 11.75 12 12.25
V
IO = 5mA to 1A, PO ≤15W
VI = 14.8V to 27V 11.5 12 12.5
Line Regulation (Note1) Regline
VI= 14.8V to 30V
IO = 500mA - 10 120
mV
VI= 16V to 22V - 4 120
TJ =+25 °C VI= 14.5V to 27V - 10 120
VI= 16V to 22V - 3 60
Load Regulation (Note1) Regload
TJ =+25 °C
IO = 5mA to 1.5A - 12 100
mV
IO = 5mA to 1.0A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQ TJ =+25°C-5.16.0mA
Quiescent Current Change ∆IQ
VI = 15V to 30V, TJ=+25 °C- 0.8
mA VI = 14V to 27V, IO = 500mA - 0.8
IO = 5mA to 1.0A - 0.5
Output Voltage Drift ∆V/∆T I
O = 5mA - -1.0 - mV/°C
Output Noise Voltage VN f = 10Hz to 100KHz
TA =+25°C-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 14V to 24V -60- dB
Dropout Voltage VDrop IO = 1A, TJ =+25°C-2.0-V
Output Resistance rO f = 1KHz - 18 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25 °C-2.2-A
KA78XX/KA78XXA
17
Electrical Characteristics (KA7815A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I =23V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO
TJ =+25 °C 14.7 15 15.3
V
IO = 5mA to 1A, PO ≤15W
VI = 17.7V to 30V 14.4 15 15.6
Line Regulation (Note1) Regline
VI= 17.9V to 30V
IO = 500mA - 10 150
mV
VI= 20V to 26V - 5 150
TJ =+25°C VI= 17.5V to 30V - 11 150
VI= 20V to 26V - 3 75
Load Regulation (Note1) Regload
TJ =+25 °C
IO = 5mA to 1.5A - 12 100
mV
IO = 5mA to 1.0A - 12 100
IO = 250mA to 750mA - 5 50
Quiescent Current IQ TJ =+25 °C-5.26.0mA
Quiescent Current Change ∆IQ
VI = 17.5V to 30V, TJ =+25 °C--0.8
mA VI = 17.5V to 30V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆T I
O = 5mA - -1.0 - mV/°C
Output Noise Voltage VN f = 10Hz to 100KHz
TA =+25 °C-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 18.5V to 28.5V -58- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 °C-2.0-V
Output Resistance rO f = 1KHz - 19 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25°C-2.2-A
KA78XX/KA78XXA
18
Electrical Characteristics (KA7818A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 27V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO
TJ =+25 °C 17.64 18 18.36
V
IO = 5mA to 1A, PO ≤15W
VI = 21V to 33V 17.3 18 18.7
Line Regulation (Note1) Regline
VI= 21V to 33V
IO = 500mA - 15 180
mV
VI= 21V to 33V - 5 180
TJ =+25 °C VI= 20.6V to 33V - 15 180
VI= 24V to 30V - 5 90
Load Regulation (Note1) Regload
TJ =+25°C
IO = 5mA to 1.5A - 15 100
mV
IO = 5mA to 1.0A - 15 100
IO = 250mA to 750mA - 7 50
Quiescent Current IQ TJ =+25 °C-5.26.0mA
Quiescent Current Change ∆IQ
VI = 21V to 33V, TJ=+25 °C--0.8
mA VI = 21V to 33V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆T I
O = 5mA - -1.0 - mV/ °C
Output Noise Voltage VN f = 10Hz to 100KHz
TA =+25°C-10-
µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 22V to 32V -57- dB
Dropout Voltage VDrop IO = 1A, TJ =+25°C-2.0-V
Output Resistance rO f = 1KHz - 19 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25°C - 250 - mA
Peak Current IPK TJ=+25 °C-2.2-A
KA78XX/KA78XXA
19
Electrical Characteristics (KA7824A)
(Refer to the test circuits. 0oC < TJ < +125 oC, Io =1A, V I = 33V, C I=0.33µF, C O=0.1µF, unless otherwise speci-
fied)
Note:
1. Load and line regulation are specified at constant junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter Symbol Conditions Min. Typ. Max. Unit
Output Voltage VO
TJ =+25 °C 23.5 24 24.5
V
IO = 5mA to 1A, PO ≤15W
VI = 27.3V to 38V 23 24 25
Line Regulation (Note1) Regline
VI= 27V to 38V
IO = 500mA - 18 240
mV
VI= 21V to 33V - 6 240
TJ =+25 °C VI= 26.7V to 38V - 18 240
VI= 30V to 36V - 6 120
Load Regulation (Note1) Regload
TJ =+25 °C
IO = 5mA to 1.5A - 15 100
mV
IO = 5mA to 1.0A - 15 100
IO = 250mA to 750mA - 7 50
Quiescent Current IQ TJ =+25 °C-5.26.0mA
Quiescent Current Change ∆IQ
VI = 27.3V to 38V, TJ =+25 °C--0.8
mA VI = 27.3V to 38V, IO = 500mA - - 0.8
IO = 5mA to 1.0A - - 0.5
Output Voltage Drift ∆V/∆T I
O = 5mA - -1.5 - mV/ °C
Output Noise Voltage VN f = 10Hz to 100KHz
TA = 25 °C-10-µV/Vo
Ripple Rejection RR f = 120Hz, IO = 500mA
VI = 28V to 38V -54- dB
Dropout Voltage VDrop IO = 1A, TJ =+25 °C-2.0-V
Output Resistance rO f = 1KHz - 20 - mΩ
Short Circuit Current ISC VI= 35V, TA =+25 °C - 250 - mA
Peak Current IPK TJ=+25 °C-2.2-A
KA78XX/KA78XXA
20
Typical Perfomance Characteristics
Figure 1. Quiescent Current
Figure 3. Output Voltage
Figure 2. Peak Output Current
Figure 4. Quiescent Current
I
KA78XX/KA78XXA
21
Typical Applications
Figure 5. DC Parameters
Figure 6. Load Regulation
Figure 7. Ripple Rejection
Figure 8. Fixed Output Regulator
Input Output
Input Output
Input Output
Input Output
KA78XX/KA78XXA
22
Figure 9. Constant Current Regulator
Notes:
(1) To specify an output voltage. substitute voltage value for "XX." A common ground is required between the input and the Output
voltage. The input voltage must remain typically 2.0V above the output voltage even during the low point on the input ripple
voltage.
(2) CI is required if regulator is located an appreciable distance from power Supply filter.
(3) CO improves stability and transient response.
VO = VXX(1+R2/R1)+IQR2
Figure 10. Circuit for Increasing Output Voltage
IRI ≥5 IQ
VO = VXX(1+R2/R1)+IQR2
Figure 11. Adjustable Output Regulator (7 to 30V)
Input Output
CI
CO
Input Output
CICO
IRI 5IQ≥
Input Output
CI
CO
KA78XX/KA78XXA
23
Figure 12. High Current Voltage Regulator
Figure 13. High Output Current with Short Circuit Protection
Figure 14. Tracking Voltage Regulator
Input
Output
Input
Output
KA78XX/KA78XXA
24
Figure 15. Split Power Supply ( ±15V-1A)
Figure 16. Negative Output Voltage Circuit
Figure 17. Switching Regulator
Input
Output
Input Output
KA78XX/KA78XXA
25
Mechanical Dimensions
Package
4.50 ±0.20
9.90 ±0.20
1.52 ±0.10
0.80 ±0.10 2.40 ±0.20
10.00 ±0.20
1.27 ±0.10
ø3.60 ±0.10
(8.70)
2.80 ±0.1015.90 ±0.20
10.08 ±0.30 18.95MAX.
(1.70)
(3.70)(3.00)
(1.46)
(1.00)
(45°)
9.20 ±0.2013.08 ±0.20
1.30 ±0.10
1.30 +0.10
–0.05
0.50 +0.10
–0.05
2.54TYP
[2.54 ±0.20]
2.54TYP
[2.54 ±0.20]
TO-220
KA78XX/KA78XXA
26
Mechancal Dimensions (Continued)
Package
6.60 ±0.20
2.30 ±0.10
0.50 ±0.10
5.34 ±0.30
0.70 ±0.20
0.60 ±0.20
0.80 ±0.20
9.50 ±0.30
6.10 ±0.20
2.70 ±0.20 9.50 ±0.30
6.10 ±0.20
2.70 ±0.20
MIN0.55
0.76 ±0.10 0.50 ±0.10
1.02 ±0.20
2.30 ±0.20
6.60 ±0.20
0.76 ±0.10
(5.34)
(1.50)
(2XR0.25)
(5.04)
0.89 ±0.10
(0.10) (3.05)
(1.00)
(0.90)
(0.70)
0.91 ±0.10
2.30TYP
[2.30±0.20]
2.30TYP
[2.30±0.20]
MAX0.96
(4.34)(0.50) (0.50)
D-PAK
KA78XX/KA78XXA
27
Ordering Information
Product Number Output Voltage Tolerance Package Operating Temperature
KA7805 / KA7806
±4%
TO-220
0 ~ + 125°C
KA7808 / KA7809
KA7810
KA7812 / KA7815
KA7818 / KA7824
KA7805A / KA7806A
±2%
KA7808A / KA7809A
KA7810A / KA7812A
KA7815A / KA7818A
KA7824A
KA7805R / KA7806R
±4% D-PAKKA7808R / KA7809R
KA7812R
KA78XX/KA78XXA
6/1/01 0.0m 001
Stock#DSxxxxxxxx
2001 Fairchild Semiconductor Corporation
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CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
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PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
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