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PDF PT1302 Data sheet ( Hoja de datos )
| Número de pieza | PT1302 | |
| Descripción | High Efficiency Step-up DC/DC Converter | |
| Fabricantes | PowTech | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PT1302 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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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/
1 page  
PT1302
High Efficiency
Step-up DC/DC Converter
TYPICAL PERFORMANCE CHARACTERISTICS
Efficiency @Vin=4.5V Vout=5V
94
92
90
88
86
84
82
0
200 400 600 800 1000 1200 1400 1600
Iout(mA)
Efficiency@Vin=3V Vout=5V
90
88
86
84
82
80
78
76
74
0
100 200 300 400 500 600 700 800
Iout (mA)
Efficiency @Vin=3V Vout=3.3V
92
90
88
86
84
82
80
78
76
0 200 400 600 800 1000 1200 1400 1600
Iout (mA)
Load Regulation
5.032
5.031
5.03
5.029
5.028
5.027
5.026
5.025
5.024
5.023
0
Vout vs. Iload@Vin=4.5V --> Vout=5V
200 400 600 800 1000 1200 1400 1600
Iload (mA)
Vout vs. Temperature
Load Regulation
Vout V.S. Iload@Vin=3V ->Vout=3.3V
3.282
3.28
3.278
3.276
3.274
3.272
3.27
0
100 200 300 400 500 600 700 800 900 1000 1100 1200 1300
Iload(mA)
China Resources Powtech (Shanghai) Limited
PT1302_DS Rev EN_1.1,
WWW.CRPOWTECH.COM
Page5
http://www.Datasheet4U.com/
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet PT1302.PDF ] | |
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