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PT1302 Datasheet Preview

PT1302 Datasheet

High Efficiency Step-up DC/DC Converter

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PT1302
High Efficiency
Step-up DC/DC Converter
GENERAL DESCRIPTION
The PT1302 i s a c ompact, high e fficiency, and low
voltage st ep-up DC/DC co nverter with an Ad aptive
Current M ode P WM co ntrol l oop. It com prises of an
error amplifier, a ramp generator, a PWM comparator, a
switch pass el ement an d driv er. It provides stab le an d
high ef ficient ope ration o ver a wi de ra nge of l oad
currents. It o perates in stable wave forms without
external co mpensation. It is su itable fo r 1~4 battery
cells ap plications to pr ovide up to 800m A o utput
current. Th e 500KHz high sw itching rate reduces th e
size of e xternal com ponents. B esides, t he 25 μA l ow
quiescent c urrent togethe r wit h high ef ficiency
maintains lo ng b attery lifetime. Th e ou tput vo ltage is
set with two ex ternal resi stors. Bo th internal 2A
switch a nd 300mA dri ver f or driving ext ernal power
devices (NMOS or NPN) are provided.
ORDERING INFORMATION
FEATURES
z Low Qu iescent (Switch-off) Supp ly Current:
25μA
z High Supp ly Cap ability: Deliver 5V 800mA with
lithium cell/ 3.3V 800mA with 2Alkaline Cell
z Zero Shutdown Mode Supply Current
z High efficiency: 92%
z Fixed switching frequency: 500KHz
z Options for internal or external power switches
z MSOP-8 and SOT-89-5 packages are available
APPLICATION
z LCD Displays
z Handheld Computers and PDAs
z Portable instruments
z Wireless equipment
z Digital Still and Video Cameras
PACKAGE
MSOP-8
TEMPERATURE
RANGE
ORDERING PART
NUMBER
-40 oC to 85 oC PT1
302EMSH
SOT-89-5 -4
0 oC to 85 oC PT130
2E89E
Note:
xxxxxX
Assembly Factory C od e
Lo t Number
TRANSPORT
MEDIA
Tape and Reel
3000 units
Tape and Reel
1000 units
MARKING
PT1302
xxxxxX
PT1302
xxxxxX
TYPICAL APPLICATION CIRCUIT
China Resources Powtech (Shanghai) Limited
PT1302_DS Rev EN_1.1,
WWW.CRPOWTECH.COM
Page1
http://www.Datasheet4U.com/




PowTech

PT1302 Datasheet Preview

PT1302 Datasheet

High Efficiency Step-up DC/DC Converter

No Preview Available !

PIN ASSIGNMENT
GND 1
EXT 2
CE 3
NC 45
8 LX
7 VDD
6 FB
NC
M-SOP8
PT1302
High Efficiency
Step-up DC/DC Converter
PIN DESCRIPTIONS
Pin No.
MSOP-8
SOT-89-5
15
2
31
4
5
63
72
84
PIN
NAMES
GND
EXT
CE
NC
NC
FB
VDD
LX
DESCRIPTION
Ground
Output pin for driving external power switch
Chip en able, PT1302
CE pin is set to low
Not Connected
gets in to shu tdown m ode when
Not Connected
Feedback input pin
Power Supply Pin
Output of internal power switch
ABSOLUTE MAXIMUM RATINGS (Note 1)
SYMBOL
VDD Su
VLX LX
VIO
IOUT
IEXT
PTR1
PTR2
TSTG S
TSolder
ITEMS
pply Voltage
Pin Switch Voltage
Voltage on other I/O Pins
LX Pin Output Current
EXT Pin Drive Current
Package Thermal Resistance, MSOP-8 θJA
Package The rmal Resistance, SOT -89-5
θJA
torage Temperature
Lead temperature (Soldering)
VALUE
-0.3~7.0
-0.3~7.0
-0.3 to (VDD+0.3)
2.5 A
300 m
190
100
-65 to 150
260, 10s
UNIT
V
V
V
A
oC /W
oC /W
oC
China Resources Powtech (Shanghai) Limited
PT1302_DS Rev EN_1.1,
WWW.CRPOWTECH.COM
Page2
http://www.Datasheet4U.com/


Part Number PT1302
Description High Efficiency Step-up DC/DC Converter
Maker PowTech
Total Page 10 Pages
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