TC1121中文资料100mA Charge Pump Voltage Converter with Shutdown数据手册Microchip规格书

描述 Description

The TC1121 is a charge pump converter with 100mA output current capability. It converts a 2.4V to 5.5V input to a corresponding negative output voltage. As with all charge pump converters, the TC1121 uses no inductors saving cost, size, and EMI. An on-board oscillator operates at a typical frequency of 10kHz (at V + = 5V) when the frequency control input (FC) is connected to ground. The oscillator frequency increases to 200kHz when FC is connected to V + , allowing the use of smaller capacitors. Operation at sub-10kHz frequencies results in lower quiescent current and is accomplished with the addition of an external capacitor from OSC (pin 7) to ground. The TC1121 also can be driven from an external clock connected OSC. Typical supply current at 10kHz is 50µA, and falls to less than 1µA when the shutdown input is brought low, whether the internal or an external clock is used. The TC1121 is available in 8-pin SOIC, MSOP, and PDIP packages.

特性 Features

Optional High-Frequency Operation Allows Use of Small CapacitorsLow Operating Current (FC = GND) ........50uAHigh Output Current ..........................100mAConverts a 2.4V to 5.5V Input Voltage to a Corresponding Negative Output Voltage (Inverter Mode)Uses Only 2 Capacitors; No Inductors Required!Selectable Oscillator Frequency ............10kHz to 200kHzPower-Saving Shutdown Input

简介

TC1121属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的TC1121稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。