PT1301 Datasheet. Www.s Manuals.com. R3.2 Powtech

User Manual: Marking of electronic components, SMD Codes 13, 13 •, 13 **, 13**, 13-, 13003, 1301, 1308A, 1308AI, 1308B, 1308BI, 130P03LS, 132, 133G, 133L, 138, 1392B, 13A, 13N03LA, 13W, 13Y, 13p, 13t. Datasheets 1.5SMC13AT3, 3DD13003, BC847BPN, BSC130P03LS G, BSS138W, BSS84, BZV49-C13, CMSZDA36V, DTA123JUA, DTA123JUB, DTA143EE, DTA143EKA, DTA143EM, DTA143EUA, DTA143EUB, IPD13N03LA, IPU13N03LA, LR9101G-33-AL4-R, LR9101L-33-AL4-R, LT1308ACS8, LT1308AIS8, LT1308BCS8, LT1308BIS8, MMBD1503, MTP3413N3, MTP3415KN3, NCP1392BDR2

Open the PDF directly: View PDF .
Page Count: 9

Download
Open PDF In Browser	View PDF

PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
GENERATION DESCRIPTION

FEATURES

The PT1301 is a compact, high efficiency, and low
voltage step-up DC/DC converter with an Adaptive
Current Mode PWM control loop. It comprises of an
error amplifier, a ramp generator, a PWM comparator, a
switch pass element and the driver. It provides stable
and high efficient operation over a wide range of load
currents without external compensation. The below 1V
start-up input voltage makes PT1301 suitable for single
battery cell applications. The built-in power transistor is
able to provide up to 300mA output current while
working under Li-Battery Supply. Besides, it provides
extra pin to drive external power devices (NMOS or
NPN ) in case higher output current is needed. The
output voltage is set with two external resistors. The
500KHz high switching rate reduces the size of external
components. Besides, the 14μA low quiescent current
together with high efficiency maintains long battery
lifetime.

z
z
z
z
z
z
z
z

Low Quiescent (Switch-off) Supply Current: 14μA
Low Start-up Input Voltage: typical 0.8V
High Supply Capability: Deliver 3.3V 100mA with
1Alkaline Cell; 5V 300mA with 1 Li-Cell
Zero Shutdown Mode Supply Current
High efficiency: 90%
Fixed switching frequency: 500KHz
Options for internal or external power switches
Package type: SOT-26, SOT-89-5

APPLICATIONS
z
z
z

MP3, PDA, Electronic
Dictionary, DSC, LCD, RF-Tag,
Portable Devices, Wireless Devices, etc.

OREER INFORMATION

TYPICAL APPLICATION CIRCUITS
(1) Typical Application
1.5Vto 3.3V, 100mA Output Current, typically for MP3 Application.

China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.2

WWW.CRPOWTECH.COM

Page 1

PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
(2) Extending Output Current
1.5V to 3.3V, 250mA Output Current

(3) High Output Voltage, Large Output Current
5V to 12V, 300mA Output Current

China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.2

WWW.CRPOWTECH.COM

Page 2

PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
PIN ASSIGNMENT

PIN DESCRIPTION
PIN No
SOT-26
1

SOT-89-5

SYMBOL

1

2
3
4
5
6

5
4
2
3

CE
EXT
GND
LX
VDD
FB

DESCRIPTTION
Enable pin. PT1301 Shut-down when CE is low
Output pin for driving external power transistor
Ground
Output for internal power switch
Power Supply
Feed back input

ABSOLUTE MAXIMUM RATINGS (Note 1)
SYMBOL

ITEM

RATING

UNIT

VDD

Supply Voltage

-0.3~7.0V

V

VLX

LX pin Switch Voltage

-0.3~7.0V

V

VIO

Voltage on other I/O pins

IOUT

LX pin Output Current

2.5

A

IEXT

EXT pin Drive Current

200

mA

PTR1

Package Thermal Resistance SOT-26, ΘJC

145

W/℃

PTR2

Package Thermal Resistance SOT-89-5, ΘJC

45

W/℃

TOPT

Operating Temperature Range

-40~125

℃

TSTG

Storage Temperature Range

-65~150

℃

TSOLDER

-0.3V to (VDD+0.3V)

Lead Temperature (Soldering)

260℃, 10s

Note1: Absolute Maximum Ratings are threshold limit values that must not be exceeded even for an instant under
any condition. Moreover, such values for any two items must not be reached simultaneously. Operation above these
absolute maximum ratings may cause degradation or permanent damage to the device. These are stress ratings only
and do not necessarily imply functional operation below these limits.

China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.2

WWW.CRPOWTECH.COM

Page 3

PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
ELECTRICAL CHARACTERISTICS (Note 2,3,4)
(VIN=1.5V, VDD=3.3V, load current=0, TA =25℃, unless otherwise specified. )

SYMBOL

ITEM

TEST CONDITION

MIN

TYP

MAX

UNIT

VST

Startup Voltage

IL = 1mA

--

0.80

1.05

V

VDD

Operating VDD Range

VDD pin Voltage

2

--

6

V

IOFF

Shutdown Current I (VIN)

CE Pin = 0V, VIN = 4.5V

--

0.01

1

μA

ISWITCH OFF

Switch-Off Current I(VDD)

VIN = 6V

--

14

25

μA

0.22

0.24

0.7

mA

--

56

--

μA

1.225

1.25

1.275

V

ISWITCH

Continuous

Switching VIN = CE= 3.3V, VFB = GND

Current
INO LOAD

No Load Current I(VIN)

VIN = 1.5V, VOUT = 3.3V

Feedback Reference Voltage

Close loop, VDD = 3.3V

Switching Frequency

VDD = 3.3V

400

500

600

KHz

Maximum Duty

VDD = 3.3V

85

94

--

%

On Resistance, LX to VDD

VDD = 3.3V

--

0.3

1.1

Ω

Limit Current

VDD = 3.3V

1

1.5

2

A

On Resistance, EXT to VDD VDD = 3.3V

--

4.4

8.5

Ω

On Resistance, EXT to GND VDD = 3.3V

--

2.45

8.5

Ω

△VLINE

Line Regulation

VIN = 3.5 ~ 6V, IL = 1mA

--

1.25

5

mV/V

△VLOAD

Load Regulation

VIN = 2.5V, IL = 1 ~ 100mA

--

0.14

--

mV/mA

CE trigger Level

VDD = 3.3V

0.4

0.8

1.2

V

V REF
Fs
DMAX

ILIMIT

TS

Vout Temperature Coefficient

△TSD

Thermal Shutdown Hysteresis

50
--

10

ppm/℃
--

℃

Note 2: Electrical Characteristics state DC and AC electrical specifications under particular test conditions which
guarantee specific performance limits. This assumes that the device is within the recommended operating Range.
Specifications are not guaranteed for parameters where no limit is given, however, the typical value is a good
indication of device performance.
Note 3: Typicals are measured at 25˚C and represent the parametric norm.
Note 4: Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.

China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.2

WWW.CRPOWTECH.COM

Page 4

PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
SIMPLIFIED BLOCK DIAGRAM

TYPICAL OPERATING CHARACTERISTICS
(1) Efficiency
(1.2) Vout=5.0V

(1.1) Vout=3.3V

Efficiency @ Vout=5.0V

Efficiency @ Vout=3.3V

100.00%

100.00%
1.0V
1.5V
3.0V

80.00%
70.00%
60.00%

90.00%

Efficiency

Efficiency

90.00%

1.5V
3.0V
4.5V

80.00%
70.00%
60.00%

50.00%

50.00%

150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0

300
270
240
210
180
150
120
90
60
30
0

Iout (mA)

Iout (mA)

(2) Line Regulation
(2.1) Vout=3.3V

(2.2) Vout=5.0V
Line Regulation @ Vout=3.3V

Line Regulation @ Vout=5.0V

Vout(V)

3.35
3.3

3.25
3.2
0

1

2

3

Vin(V)

China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.2

4

Io=1mA
Io=5mA
Io=10mA
Io=25mA
Io=50mA
Io=100mA
Io=150mA
Io=300mA

5
4.99
4.98
4.97
4.96
4.95
4.94
4.93
4.92
4.91
4.9

Vout (V)

3.4

0

WWW.CRPOWTECH.COM

1

2

3
Vin (V)

4

5

Io=1mA
Io=5mA
Io=10mA
Io=25mA
Io=50mA
Io=100mA
Io=150mA
Io=300mA

Page 5

PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
TYPICAL OPERATING CHARACTERISTICS
(3) Load Regulation
(3.1) Vout=3.3V

(3.2) Vout=5.0V
Load Regulation @ Vout=3.3V

Load Regulation @ Vout=5.0V

3.35

1.0V
1.5V
3.0V

3.3
3.25
3.2
0.1

Vout (V)

Vout (V)

3.4

1

10
Iout (mA)

100

1000

5
4.99
4.98
4.97
4.96
4.95
4.94
4.93
4.92
4.91
4.9
0.1

1.5V
3.0V
4.5V

1

10
Iout (mA)

100

1000

APPLICATION INFORMATION
1) Output Voltage Setting
Referring to Typical Application Circuit 1, the
output voltage of switching regulator (Vout) is set
with following equation:
Vout=(1+R1/R2)*Vfb
2) Feedback Loop Design
Referring to Typical Application Circuit 1 again,
the selection of R1 and R2 is a trade-off between
quiescent current consumption and interference
immunity besides abiding by the above equation.
z Higher R reduces quiescent current
( I=1.25V/R2 )
z Lower R gives better interference immunity,
and is less sensitive to interference, layout
parasitic, FB node leakage, and improper
probing to FB pin.
Hence for applications without standby or suspend
modes lower R1 and R2 values are preferred, while
for applications concerning the current
consumption in standby or suspend modes, higher
values of R1 and R2 are needed. Such high

impedance feedback loop is sensitive to any
interference, which requires careful PCB layout
and avoid any interference, especially to FB pin.
To improve the system stability, a proper value
capacitor between FB pin and Vout is suggested.
An empirical suggestion is around 100pF for MΩ
feedback resistors and 10nF～0.1uF for lower R
values.
3) PCB Layout Guide
PCB Layout shall follow these guidelines for better
system stability:
z A full GND plane without any gap break.
z VDD to GND bypass Cap – The 1μF MLCC noise
bypass Cap between pin 5 and pin 3 shall have
short and wide connections.
z Vin to GND bypass Cap – Add a Cap close to the
inductor when Vin is not an idea voltage source.
z Minimize the FB node copper area and keep it far
away from noise sources.
z Minimize the parasitic capacitance connected to
LX and EXT nodes to reduce the switch loss.

TEST CIRCUITS

China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.2

WWW.CRPOWTECH.COM

Page 6

PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
PACKAGE INFORMATION
(1) SOT-26

SYMBOL

DIMENSION ( in mm)

A

MIN

MAX

MIN

MAX

0.787

1.450

0.031

0.057

A1

0.152

0.006

B

1.397

1.803

0.055

0.071

b

0.250

0.559

0.010

0.022

C

2.591

2.997

0.102

0.118

D

2.692

3.099

0.106

0.122

e

0.838

1.041

0.033

0.041

H

0.080

0.254

0.003

0.010

L

0.300

0.610

0.012

0.024

China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.2

DIMENSION ( in Inch)

WWW.CRPOWTECH.COM

Page 7

PT1301
High Efficiency
Low Voltage Step-up DC/DC Converter
PACKAGE INFORMATION
(2) SOT-89-5

SYMBOL

DIMENSION ( in mm )
MIN

MAX

MIN

MAX

A

1.400

1.600

0.055

0.063

b

0.460

0.520

0.014

0.020

B

2.400

2.600

0.094

0.102

b1

0.406

0.533

0.016

0.021

C

4.250

C1

0.800

D

4.400

D1

0.167
0.031

4.600

0.173

1.700

0.181
0.067

e

1.400

1.600

0.055

0.063

H

0.380

0.430

0.014

0.017

China Resources Powtech (Shanghai) Limited
PT1301_DS Rev EN_3.2

DIMENSION( in Inch )

WWW.CRPOWTECH.COM

Page 8

www.s-manuals.com



---

Source Exif Data:

File Type                       : PDF
File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.6
Linearized                      : No
XMP Toolkit                     : Adobe XMP Core 4.0-c316 44.253921, Sun Oct 01 2006 17:14:39
Producer                        : Acrobat Distiller 7.0 (Windows)
Creator Tool                    : PScript5.dll Version 5.2
Modify Date                     : 2016:01:13 18:53:31+02:00
Create Date                     : 2008:03:28 16:30:58+08:00
Metadata Date                   : 2016:01:13 18:53:31+02:00
Format                          : application/pdf
Title                           : PT1301 - Datasheet. www.s-manuals.com.
Creator                         : 
Subject                         : PT1301 - Datasheet. www.s-manuals.com.
Document ID                     : uuid:09811fed-1927-4216-94ba-3d3d7f8473ef
Instance ID                     : uuid:7448aac0-660b-4447-b620-f99c26477a90
Page Count                      : 9
Keywords                        : PT1301, -, Datasheet., www.s-manuals.com.

EXIF Metadata provided by EXIF.tools