SC420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

SC420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SC420DC-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。其他拓撲結(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

The SC420 is a cost effective Dual MOSFET Driver, in corporating Semtech’s patented Combi-SenseTM technology, designed for switching High and Low side Power MOSFETs in Step-down Switching regulators. A 20ns max propagation delay from input transition to the gate of the power FET’s guarantees operation at high switching frequencies. Internal overlap protection circuit prevents shoot-through from Vin to GND in the main and synchronous MOSFETs.

Features

● High efficiency

● Shutdown mode for increased power saving

● Tri-state capability

● Fast rise and fall times (15ns typical with 3000pF load)

● 5V gate drive

● Ultra-low (<20ns) propagation delay (BG going low)

● Adaptive and programmable non-overlapping gate drives provide shoot-through protection

● Floating top drive switches up to 27V

● High frequency (to 1.5 MHz) operation allows use of small inductors and low cost ceramic capacitors

● Under-voltage lockout

● Low quiescent current

● MLP packaging provides superior thermal performance in a small footprint

Applications

● High efficiency portable and notebook computers

● Battery powered applications