SC2677B集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF中文资料

SC2677B属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由升特制造生产的SC2677BDC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。

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.

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