L5970D数据手册集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF

描述 Description

The L5970D is a step down monolithic power switching regulator capable to deliver up to 1A at output voltages from 1.2V to 35V.

The device uses an internal P-Channel D-MOS transistor (with a typical Rdson of 250mΩ) as switching element to minimize the size of the external components.

An internal oscillator fixes the switching frequency at 250KHz.

Having a minimum input voltage of 4.4V only, it is particularly suitable for 5V bus, available in all computer related applications.

Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short circuit protection.

特性 Features

• Inhibit for zero current consumption
• Internal current limiting
• Protection against feedback disconnection
• Synchronization
• Thermal shutdown
• Voltage feedforward
• 250KHz Internally fixed frequency
• Up to 1A output current
• 3.3V / (±2%) reference voltage
• Operating input voltage from 4.4V to 36V
• Low dropout operation: 100% duty cycle
• Zero load current operation
• Output voltage adjustable from 1.2V to 35V

简介

L5970D属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的L5970D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。