LTC1514中文资料Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator数据手册ADI规格书

描述 Description

The LTC1514-3.3/LTC1514-5 are micropower switched capacitor DC/DC converters that produce a regulated output voltage by either stepping up or stepping down the input voltage. Output voltage is fixed at either 3.3V (LTC1514-3.3) or 5V (LTC1514-5) by an internal resistor divider.

A unique architecture allows the parts to accommodate a wide input voltage range (2V to 10V) while maintaining +4% regulation. Additional circuitry prevents excessive inrush current and output voltage ripple when large VIN to VOUT differentials are present.

An internal uncommitted comparator is kept active in shutdown. The comparator has an open-drain output for flexible interfacing.

The parts are short-circuit and overtemperature protected. Battery life is maximized by very low operating currents (ICC= 60µA typ, 10µA in shutdown). Both parts are available in an SO-8 package.

Applications

Battery Operated Equipment Smart Card Readers Local Power Supplies Handheld Instruments Battery Backup Supplies

特性 Features

• 3.3V or 5V Output Voltages

• 2V to 10V Input Voltage Range

• Up to 50mA Output Current

• Only Three External Capacitors Required

• Soft Start Limits Inrush Current at Turn-On

• Low Operating Current: 60µA

• Low Shutdown Current: 10µA

• Shutdown Disconnects Load from VIN

• Short-Circuit and Overtemperature Protected

• 650kHz Switching Frequency

• Low-Battery Comparator Active in Shutdown

• Available in SO-8 Package

简介

LTC1514属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的LTC1514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。