L5983集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

L5983属于集成电路（IC）的稳压器-DC-DC开关稳压器。由意法半导体集团制造生产的L5983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。

描述 Description

The L5983 is a step down switching regulator with 2.0A current limited embedded power MOSFET, so it is able to deliver an output current in excess of 1.5A DC to the load.

The input voltage can range from 2.9V to 18V, while the output voltage can be set starting from 0.6V to VIN. Having a minimum input voltage of 2.9V, the device is suitable for also for the 3.3V bus.

Requiring a minimum set of external components, the device includes an internal 250kHz switching frequency oscillator that can be externally adjusted up to 1MHz.

The QFN package with exposed pad allows reducing the RthJA down to approximately 60°C/W.

特性 Features

■ 1.5A DC output current

■ 2.9V to 18V input voltage

■ Output voltage adjustable from 0.6V

■ 250kHz switching frequency, programmable up to 1MHz

■ Internal soft-start

■ Inhibit

■ Low dropout operation: 100 duty cycle

■ Voltage feed-forward

■ Zero load current operation

■ Over current and thermal protection

■ VQFN3x3-8L package

Applications

■ Consumer:

STB, DVD, DVD recorder, car audio, LCD TV

and monitors

■ Industrial:

Chargers, car battery, PLD, PLA, FPGA

■ Networking: XDSL, modems, DC-DC modules

■ Computer:

Optical storage, hard disk drive, printers,

audio/graphic cards