General Description

The APW7037 series are designed to provide a low cost synchronous Buck regulator for on-board DC to DC converter applications. The APW7037 series together with dual N-channel MOSFET s such as APM7313, provide a low cost solution for such applications. Each device features an internal 200/400kHz oscillator , Power-On-Reset (POR) for both VCC and VC suppli es, an external programmabl e soft-start functi on as well as output under voltage detection that latches off the device when an out put short is detected.

特性 Features

? Operating with Single 5V or 12V Input

? Drives N-Channel MOSFET s

? Simple Single-Loop Control Design

- Voltage-Mode PWM Control

- Full 0 to 100 Duty Ratio

- Fast Transient Response

? ±2 Output Voltage Accuracy Over Temperature

? Under-Voltage Protection for Output

? 200/400kHz Constant Frequency Operation

- 200kHz for APW7037B

- 400kHz for APW7037A

? Small size, 8-PIN Package (SOIC or TSSOP)

? Lead Free and Green Devices Available(RoHS Compliant)

Applications

? Graphics Cards

? DDR Memory Power Supply

? DDR Memory T ermination V oltage

? Low-V oltage Distributed Power Supplies