描述 Description

The SC2677B is a versatile 2 phase, synchronous, voltage mode PWM controller that can be used in two distinct ways. First, the SC2677B is ideal for applications where point of use output power exceeds any single input power budget. Alternatively, the SC2677B can be configured as a dual switcher. The SC2677B features a precise temperature compensated voltage reference, cycle-by-cycle peak current limit, under voltage lockout over current protection, and internal level-shifted high-side gate drive circuitry.

特性 Features

◆ 300kHz to 1MHz externally programmable frequency operation

◆ Soft Start and Enable function

◆ Power Good output provided

◆ Cycle-by-cycle peak current limit

◆ Latch off for over current protection

◆ Phase-shifted switchers minimize ripple

◆ High efficiency operation, >90

◆ Programmable output(s) as low as 0.5V

◆ Industrial temperature range

◆ TSSOP-24 package

◆ TSSOP-24 EDP package

◆ Bias voltage as low as 4.5V

◆ Adjustable phase shift between channels

Applications

◆ Graphics cards

◆ Peripheral add-in card

◆ Dual-Phase power supply

◆ Power supplies requiring two outputs