General Description

The Channel 1 is a step-down DC/DC converter, and own the ability of driving a 3A load without additional transistor component. Due to reducing the number of external component, the board space can be saved easily. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control have good line and load regulation without external design.

Features

* Channel 1: simple switch

- Adjustable version output voltage range, 1.23V to 18V+4 & Fixed 3.3V version

- 150KHz +20 fixed switching frequency

- Voltage mode non-synchronous PWM control

- ON/OFF shutdown control input

- Operating voltage can be up to 20V

- Output load current: 3A

- Low power standby mode

* Channel 2: ultra low drop regulator

- Adjustable output voltage

- 0.6V Maximum Dropout voltage at 1.0A Load current

- Fast transient response

- Good noise rejection

* Channel 1 & Channel 2

- SOP-16L Pb-free package

- Built-in switching transistor on chip

- Thermal-shutdown and current-limit protection of each channel

Applications

- PC Motherboard

- LCD Monitor

- Graphic Card

- DVD-Video Player

- NIC/Switch

- Telecom Equipment

- ADSL Modem

- Printer and other Peripheral Equipment