SC4612集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器規(guī)格書PDF中文資料

SC4612屬于集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關(guān)式控制器。由Semtech Corporation制造生產(chǎn)的SC4612DC-DC 開關(guān)控制器PMIC（電源管理集成電路）DC 到 DC 開關(guān)式控制器是用于高效率電路的穩(wěn)壓 IC，其配置為生成高于（突升或步升）或低于（突降或步降）輸入電源的輸出電源電壓。其他拓?fù)浣Y(jié)構(gòu)可能包括：降壓-升壓、反激、正激、Cuk、SEPIC、全橋、半橋和推挽式。這些器件不同于需要最小電壓并“燒盡”多余電壓的線性穩(wěn)壓器。

Description

SC4612 is a high performance synchronous buck controller that can be configured for a wide range of applications. The SC4612 utilizes synchronous rectified buck topology where high efficiency is the primary consideration. SC4612 is optimized for applications requiring wide input supply range and low output voltages down to 500mV.

SC4612 implements an asynchronous soft-start mode, which keeps the lower side MOSFET off during soft-start, a desired feature when a converter turns on into a preset external voltage or pre-biased output voltage. With the lower MOSFET off, the external bus is not discharged, preventing any disturbances in the start up slope and any latch-up of modern day ASIC circuits.

Features

■ Wide voltage range, VDD = 28V, VPWRIN = 40V

■ Internally regulated DRV

■ Output voltage as low as 0.5V

■ 1.7A gate drive capability

■ Asynchronous start up mode

■ Low side RDS-ON sensing with hiccup mode current limit

■ Programmable current limit

■ Programmable frequency up to 1.2 MHz

■ Available in MLPD-12 and SOIC-14 Lead-free packages. This product is fully WEEE and RoHS compliant

Applications

■ Distributed power architectures

■ Telecommunication equipment

■ Servers/work stations

■ Mixed signal applications

■ Base station power management

■ Point of use low voltage high current applications