SY6288 Datasheet. Www.s Manuals.com. R0.58 Silergy

User Manual: Marking of electronic components, SMD Codes DS, DS**, DS***, DS-***, DS=**, DS=***. Datasheets AP131-33W, BD4836FVE, BD4836G, BZT52H-B9V1, BZX384-C47, MAX6314US50D3-T, PDTC114EM, RT8223BGQW, RT9193-15GB, RT9193-15PB, SY6288D1AAC.

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Application Note: AN_SY6288
Low Loss Power Distribution Switch
Preliminary Specification
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 1
General Description
SY6288 is an ultra-low RDS(ON) switch with current
limiting function to protect the power source from over
current and short circuit conditions.
Ordering Information
Temperature Code
Optional Spec Code
SY6288□
□□
□(□□
□□□□
□□)□
□□
□
Package Code
Temperature Code
Optional Spec Code
SY6288□
□□
□(□□
□□□□
□□)□
□□
□
Package Code
Temperature Range: -40°C to 85°C
Ordering Number
Package type
Note
SY6288AAAC SOT23-5 0.6A/Active High
SY6288ACAC MSOP8 0.6A/Active High
SY6288AFAC SO8 0.6A/Active High
SY6288BAAC SOT23-5 0.6A/Active Low
SY6288BCAC MSOP8 0.6A/Active Low
SY6288BFAC SO8 0.6A/Active Low
SY6288CAAC SOT23-5 2A/Active High
SY6288CCAC MSOP8 2A/Active High
SY6288CFAC SO8 2A/Active High
SY6288C1CAC MSOP8 1.5A/Active High
SY6288C2CAC MSOP8 1.5A/Active High
SY6288C4CAC MSOP8 2A/Active High
SY6288DAAC SOT23-5 2A/Active Low
SY6288DCAC MSOP8 2A/Active Low
SY6288DFAC SO8 2A/Active Low
SY6288D1AAC SOT23-5 1.5A/Active Low
SY6288D1CAC MSOP8 1.5A/Active Low
SY6288D1FAC SO8 1.5A/Active Low
SY6288D2CAC MSOP8 1.5A/Active Low
Features
• Distribution voltages: 2.5V to 5.5V
• Over temperature shutdown and automatic
retry
• Reverse blocking (no body diode)
• At shutdown, OUT can be forced higher than
IN
• Fault flag (OCB) output for over current and
fault conditions
• Automatic output discharge at shutdown
• Built-in softstart
• 0.4ms rise time
• RoHS Compliant and Halogen Free
• Two Enable polarities and three current levels
o SY6288A: Active High/0.6A
o SY6288B: Active Low/0.6A
o SY6288C: Active High/2A
o SY6288C1: Active High/1.5A
o SY6288C2: Active High/1.5A
o SY6288C4: Active High/2A
o SY6288D: Active Low/2A
o SY6288D1: Active Low/1.5A
o SY6288D2: Active Low/1.5A
• Compact packages minimize board space:
SOT23-5, SO8, MSOP8
• UL certification NO. 20100428-E333762
TUV certification NO. R501887690001
Typical Application Circuit
Note: A low-ESR 150uF aluminum electrolytic or
tantalum between VOUT and GND is strongly
recommended.
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 2
Pin Configurations (Top View)
SOT23-5 MSOP8 SO8
Part Number Package type Top Mark①
SY6288AAAC SOT23-5 CWxyz
SY6288ACAC MSOP8 ABTxyz
SY6288AFAC SO8 AAJxyz
SY6288BAAC SOT23-5 DBxyz
SY6288BCAC MSOP8 ABDxyz
SY6288BFAC SO8 AALxyz
SY6288CAAC SOT23-5 DFxyz
SY6288CCAC MSOP8 ABUxyz
SY6288CFAC SO8 AAMxyz
SY6288C1CAC MSOP8 ADKxyz
SY6288C2CAC MSOP8 ADLxyz
SY6288C4CAC MSOP8 AEXxyz
SY6288DAAC SOT23-5 BUxyz
SY6288DCAC MSOP8 ABExyz
SY6288DFAC SO8 AANxyz
SY6288D1AAC SOT23-5 DSxyz
SY6288D1CAC MSOP8 ACKxyz
SY6288D1FAC SO8 ACJxyz
SY6288D2CAC MSOP8 AEHxyz
Note
①
：
x=year code, y=week code, z= lot number code.
Functional Pin Description
Pin Name Pin Number
(SO8, MSOP8)
Pin number
(SOT23-5) Pin Description
IN 2,3 5 Input pin
GND 1 2 Ground pin
OUT 6,7,8 1 Output pin
EN- SY6288A/C/C1/C2/C4
ENB- SY6288B/D/D1/D2 4 4 ON/OFF control. Don’t float. EN:
high enable. ENB: low enable.
OCB 5 3 Open Drain Fault Flag
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 3
Absolute Maximum Ratings (Note 1)
All pins-------------------------- -------------------------------------------------------------------------------- 6V
Power Dissipation, PD @ TA = 25°C SOT23-5/MSOP8/SO8--------------------------------------------- 0.4/0.5/0.65W
Package Thermal Resistance (Note 2)
SOT23-5/MSOP8/SO8,
JA ------------------------------------------------------------------------ 250/150/90°C/W
SOT23-5/MSOP8/SO8,
JC ------------------------------------------------------------------------ 130/ 65/ 45°C/W
Junction Temperature Range ---------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) -----------------------------------------------------------------------260°C
Storage Temperature Range ----------------------------------------------------------------------------------- -65°C to 150°C
ESD Susceptibility (Note 2)
HBM (Human Body Mode) ----------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions (Note 3)
IN----------------------------------------------------------------------------------------------------------------- 2.5V to 5.5V
EN/ENB--------------------------------------------------------------------------------------------------------- -0.3V to VIN+0.3V
All other pins --------------------------------------------------------------------------------------------------- 0-5.5V
Junction Temperature Range -------------------------------------------------------------------------------- -40°C to 125°C
Ambient Temperature Range -------------------------------------------------------------------------------- -40°C to 85°C
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 4
Electrical Characteristics
(VIN = 5V, CL=1uF, per channel, TA = 25°C unless otherwise specified)
Parameter Symbol Test Conditions Min
Typ
Max
Unit
Input Voltage Range VIN 2.5 5.5 V
Open load, switch off 0.1 1 µA
Shutdown Input Current ISHDN Output grounded, switch off 0.1 1 µA
Quiescent Supply Current IQ Open load, switch on 32 µA
SOT23-5(SY6288A/B/C/D/D1) 60 80 100 mΩ
MSOP8 (SY6288A/B/C/C1/C4) 60 80 100 mΩ
MSOP8 (SY6288C2/ D1/D2) 50 70 90 mΩ
MSOP8 (SY6288D) 57 70 83 mΩ
FET RON RDS(ON)
SO8( SY6288A/B/C/D/D1) 65 85 105 mΩ
SY6288A/B 0.8 1.2 1.6 A
SY6288C/D 2.1 2.9 3.7 A
SY6288C1 1.6 2.4 3.2 A
SY6288C2/D2 1.5 1.75
2 A
SY6288D1 1.6 2.5 3.7 A
Current Limit ILIM
SY6288C4 2.5 2.9 3.7 A
Short Circuit Output Current IOS
MSOP8 (SY6288D),OUT
connected to GND device
enabled.
1.2 1.8 2.4 A
Logic-Low
Voltage
VIL 0.8 V
EN/
EN
Threshold Logic-High
Voltage
VIH 2 V
IN UVLO Threshold VIN,
UVLO
2.4 V
IN UVLO Hysteresis VIN,
HYS
0.1 V
Turn-ON Time TON RL=5 Ω, CL=1uF 400 µs
OCB Low Resistance ROCB
10 Ω
OCB Delay Time TOCB_Delay 10 ms
OUT Shutdown Discharge
Resistance RDIS 10 Ω
Thermal Shutdown
Temperature TSD 150 °C
Thermal Shutdown Hysteresis
20 °C
Note 1: Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device.
These are for stress ratings. Functional operation of the device at these or any other conditions beyond those
indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may remain possibility to affect device reliability.
Note 2:
JA is measured in the natural convection at TA = 25°C on a low effective single layer thermal conductivity
test board of JEDEC 51-3 thermal measurement standard.
Note 3: The device is not guaranteed to function outside its operating conditions
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 5
Typical Operating Characteristics
(SY6288DFAC)
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 6
Rise Time (us)
Output Fall Time vs. VIN
VIN (V)
0
300
600
900
1200
1500
1800
2.5 3 3.5 4 4.5 5 5.5 6
2100
2400
COUT=1uF
COUT=100uF
COUT=470uF
( RL=2.5Ω )
Current Limit (A)
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 7
Block diagram
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 8
Operation
The SY6288 is a current limited P-channel MOSFET
power switch designed for high-side load-switching
applications. There is no parasitic body diode between
drain and source of the MOSFET, so the SY6288
prevents current flow from out to input when out being
externally forced to a higher voltage than vin when
chip is disabled.
Over-current protection
When the over-current condition is sensed, the gate
of the pass switch is modulated to achieve constant
output current. Under output short circuit conditions,
the normal current limit folded back 50%. If the over
current condition presists for a long enough time, the
junction temperature may exceed 150C, and over-
temperature protection will shut down the part. Once
the chip temperature drops to 130C, the part will restart.
Fault Flag (OCB)
The OCB output is asserted (active low) when an
overtemperature shutdown condition is encountered or
after overcurrent condition persists for 10ms. The
output remains asserted until the overcurrent or
overtemperature condition is removed. Connecting a
heavy capacitive load to an enabled device can cause a
momentary overcurrent condition; however, no false
reporting on OCB occurs due to the 10-ms deglitch
circuit. OCB is not deglitched when the switch is
turned OFF due to an overtemperature shutdown.
Supply Filter Capacitor
In order to prevent the input voltage drooping during
hot-plug events, a 10uF ceramic capacitor form VIN to
GND is strongly recommended. However, higher
capacitor values could reduce the voltage droop on the
input further. Furthermore, an output short will cause
ringing on the input without the input capacitor. It
could destroy the internal circuitry when the input
transient exceed 6V which is the absolute maximum
supply voltage even for a short duration.
Output Filter Capacitor
Between VOUT and GND, a low-ESR 150uF
alumimum electrolytic or tantalum capacitor is strongly
recommended to meet the 330mV maximum droop
requirement. Standard bypass methods should be used
to minimize inductance and resistance between the
bypass capacitor and the downsteam connector. This
will reduce EMI and improve the transient performance.
If long cables are connected to the output terminals, an
anti-parallel schottky diode such as BAT54 is
suggested to be placed in parallel with the output
terminals to absorb the negative ringing due to the
cable inductance.
PCB Layout Guide
For best performance of the SY6288 , the following
guidelines must be strictly followed:
Keep all VBUS traces as short and wide as possible
and use at least 2 ounce copper for all VBUS traces.
Place a ground plane under all circuitry to lower
both resistance and inductance and improve DC
and transient performance.
A low-ESR 150uF aluminum electrolytic or
tantalum capacitor between VOUT and GND is
strongly recommended.
Locate the output capacitor as close to the
connectors as possible to lower impedance(mainly
inductance) between the port and the capacitor
and improve transient performance.
Input and output capacitors should be placed
closed to the IC and connected to ground plane to
reduce noise coupling.
Locate the ceramic bypass capacitors as close as
possible to the VIN pins and VOUT pins of
SY6288.
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 9
PCB Layout Guide(SO8)
PCB Top Over Layer (SO8)
PCB Top Layer (SO8)
PCB Bottom Layer (SO8)
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 10
SOT23-5 Package outline &
PCB layout design
2.40
0.80
0.55
0.95 TYP
2.40
0.80
0.55
0.95 TYP
Recommended Pad Layout
0.1 - 0.15
0.25 REF
0.3 - 0.6
0.1 - 0.15
0.25 REF
0.3 - 0.6
1.50 - 1.70
0.30 - 0.50
2.80 - 3.10
2.70 - 3.00
1.50 - 1.70
0.30 - 0.50
2.80 - 3.10
2.70 - 3.00
1.0 - 1.3
0.01 - 0.1
1.90 TYP
0.95 TYP
1.0 - 1.3
0.01 - 0.1
1.90 TYP
0.95 TYP
Notes: All dimensions are in millimeters.
All dimensions don’t include mold
flash & metal burr.
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 11
SO8 Package outline & PCB
layout design
5.40
0.60
1.27 TYP
1.55
5.40
0.60
1.27 TYP
1.55
Recommended Pad Layout
45°
0.25 base
0 -8°
°
°
°
0.18 -
0.25
0.25 - 0.50
0.60 - 0.85
45°
0.25 base
0 -8°
°
°
°
0.18 -
0.25
0.25 - 0.50
0.60 - 0.85
0.30 – 0.50
5.80 - 6.10
3.80 - 4.00
0.30 – 0.50
5.80 - 6.20
3.80 - 4.00
1.27 (TYP)
1.40 - 1.60
0.08 - 0.25
4.80 - 5.00
1.27 (TYP)
1.40 - 1.60
0.08 - 0.25
4.80 - 5.00
Notes: All dimensions are in millimeters.
All dimensions don’t include mold
flash & metal burr.
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 12
MSOP8 Package outline & PCB
layout design
0.45
0.65
1.35
5.30
Recommended Pad Layout
0.25 base
0.10-0.25
0.40-0.80
4.70-5.10
2.85-3.10
2.85-3.10
0.05-0.15
0.75-0.95
0.65 (TYP)
Notes: All dimensions are in millimeters.
All dimensions don’t include mold
flash & metal burr.
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 13
Taping & Reel Specification
1. Taping orientation
SOT23-5
Feeding direction
SOP8
Feeding direction
MSOP8
Feeding direction
3.9/4.1 1.45/1.55
3.9/4.1 1.45/1.55
11.7/12.3
11.7/12.3
3.9/4.1 1.45/1.55
3.9/4.1 1.45/1.55
7.7/8.3
3.9/4.1 1.45/1.55
7.7/8.3
AN_SY6288
AN_SY6288 Rev. 0.58 Silergy Corp. Confidential-prepared for Customer Use Only 14
2. Carrier Tape & Reel specification for packages
Package
types
Tape width
(mm)
Pocket
pitch(mm)
Reel size
(Inch)
Reel
width(mm)
Trailer
length(mm)
Leader length
(mm)
Qty per
reel
SOT23-5 8 4 7" 8.4 280 160 3000
SOP8 12 8 13" 12.4 400 400 2500
MSOP8 12 8 13" 12.4 400 400 3000
3. Others: NA
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