L5985TR屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關穩(wěn)壓器。由意法半導體集團制造生產(chǎn)的L5985TR穩(wěn)壓器 - DC-DC 開關穩(wěn)壓器DC-DC 開關穩(wěn)壓器 PMIC（電源管理集成電路）產(chǎn)品族中的產(chǎn)品是元器件級設備，用于需要穩(wěn)定 DC 輸入電壓和/或將其轉換為不同幅度的輸出電壓的應用。這些器件與稱為“控制器”PMIC 的類似產(chǎn)品的區(qū)別在于集成了主開關元件，設備提供的電力會通過該元件。

描述 Description

The L5985 is a step down switching regulator with 2.5A current limited embedded power MOSFET, so it is able to deliver up to 2A DC current to the load depending on the application condition.

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 buses staring from for 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

■ 2A 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 and 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