TC110中文资料PFM/PWM Step-Up DC/DC Converter数据手册Microchip规格书

描述 Description

The TC110 is a step-up (Boost) switching controller that furnishes output currents as high as 300 mA while delivering a typical efficiency of 84%. The TC110 normally operates in pulse width modulation mode (PWM), but automatically switches to pulse frequency modulation (PFM) at low output loads for greater efficiency. Supply current draw for the 100 KHz version is typically only 50 µA, and is reduced to less than 0.5 µA when the SHDN input is brought low. Regulator operation is suspended during shutdown. Housed in a tiny 5-pin SOT-23A package, the TC110 occupies minimum board space, and uses tiny external components (the 300 KHz version allows for less than 5 mm surface-mount magnetics). The TC110 accepts input voltages from 2.0V to 10.0V, with a guaranteed start-up voltage of 0.9V.

特性 Features

Guaranteed Start-Up at 0.9V
100/300 kHz
50/120 µA
50 µA (Typ) Supply Current (fOSC = 100 KHz)
300 mA Output Current @ VIN =2.7V
0.5 µA Shutdown Mode
100 KHz and 300 KHz Switching Frequency Options
Programmable Soft-Start
84% Efficiency

简介

TC110属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由制造生产的TC110DC-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。