TC110集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關式控制器規(guī)格書PDF中文資料

TC110屬于集成電路（IC）的PMIC-穩(wěn)壓器-DCDC開關式控制器。由微芯科技股份有限公司制造生產的TC110DC-DC 開關控制器PMIC（電源管理集成電路）DC 到 DC 開關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。其他拓撲結構可能包括：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。

General Description

The TC110 is a step-up (Boost) switching controller that furnishes output currents of up to 300mA 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 100kHz version is typically only 50μA, and is reduced to less than 0.5μA when the SHDN input is brought low. Regulator operation is suspended during shutdown. The TC110 accepts input voltages from 2.0V to 10.0V, with a guaranteed start-up voltage of 0.9V.

The TC110 is available in a small 5-Pin SOT-23A package, occupies minimum board space and uses small external components (the 300kHz version allows for less than 5mm surface-mount magnetics).

Features

? Assured Start-up at 0.9V

? 50μA (Typ) Supply Current (fOSC = 100kHz)

? 300mA Output Current @ VIN ≥ 2.7V

? 0.5μA Shutdown Mode

? 100kHz and 300kHz Switching Frequency Options

? Programmable Soft-Start

? 84 Typical Efficiency

? Small Package: 5-Pin SOT-23A

Applications

? Palmtops

? Battery-Operated Systems

? Positive LCD Bias Generators

? Portable Communicators