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GMOS - PWM Control 3A Step-Down Converter

Numéro de référence GT1510
Description PWM Control 3A Step-Down Converter
Fabricant GMOS 
Logo GMOS 





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GT1510 fiche technique
GT1510
PWM Control 3A Step-Down Converter
General Description
The GT1510 consists of step-down switching
regulator with PWM control . This device include a
reference source, oscillation circuit,error amplifier,
internal P-channel DMOS and etc.
GT1510 provides low-ripple power, high efficiency,
and excellent transient characteristics. The PWM
control circuit is able to vary the duty ratio linearly
from 0 up to 100%. This converter also contains an
error amplifier as well as a soft-start circuit that
prevent a overshoot at startup. An enable function,
over current protect function and a short circuit
protect function are built inside, when OCP or SCP
happens, the operation frequency will be reduced
from 300KHz to 40KHz. Also, an internal
compensation block is built in to minimum external
component count.
With the addition of internal P-channel DMOS, a
coil, capacitors, and a schottky diode connected
externally, this IC serve as ideal power supply unit
for portable when coupled with the SOP-8L
mini-package, providing such outstanding features
as low current consumption. Since this converter
can accommodate an input voltage up to 24V, It is
also ideal when operating via an AC adapter.
Pin Assignments 脚位排列
Features
- Input voltage:3.6V to 24V
- Adjustable output voltage range :0.8V to VCC
- Duty ratio:0% to 100% PWM control
- Oscillation frequency:380KHz typ.
- Soft-start, Current limit,Enable function
- Thermal Shutdown function
- Bulit-in internal 60mΩ P-channel DMOS
- Up to 95% Efficiency
- Output load current: 3A
- SOP-8L Pb-Free Package
- Low power standby mode
Applications
- Distributed Power Systems
- LCD Monitor
- DVD-Video Player
- Telecom Equipment
- ADSL Modem
- Printer and other Peripheral Equipment
- Battery Chargers
- Set-Top Boxes
- Cigarette Lighter Powered Devices
Pin Descriptions 脚功能描述
(Top View)
FB 1
EN 2
OCS 3
VIN 4
8 GND
7 GND
6 SW
5 SW
SOP-8L
Pin# Name
Description
1 FB Feedback pin 反馈脚
Power-off pin 使能脚
2 EN H: Normal operation
使能 L: Disable operation
Connects an external resistor to
3 OCS set maximum output current.电流设置脚
(外接一个电阻设置最大输出电流)
4 VIN IC power supply pin. 输入脚
Switch Pin. Connect external
5,6 SW inductor/schottky diode here.开关脚
(接一电感或者肖特基二极管)
7,8 GND Ground Pin.接地脚
GMOS Technology Crop.
www.gmos-semi.com
1/7
Free Datasheet http://www.datasheet4u.com/

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