L5973D集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

L5973D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L5973D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 L5973D is a step down monolithic power switching regulator with a minimum switch current limit of 2.5 A so it is able to deliver more than 2 A DC current to the load depending on the application conditions.

The output voltage can be set from 1.235 V to 35 V. The high current level is also achieved thanks to an SO8 package with exposed frame, that allows to reduce the Rth(j-amb) down to approximately 40 °C/W.

特性 Features

■ 2.5 A internal switch

■ Operating input voltage from 4 V to 36 V

■ 3.3 V / (±2) reference voltage

■ Output voltage adjustable from 1.235 V to 35

■ Low dropout operation: 100 duty cycle

■ 250 kHz internally fixed frequency

■ Voltage feedforward

■ Zero load current operation

■ Internal current limiting

■ Inhibit for zero current consumption

■ Synchronization

■ Protection against feedback disconnection

■ Thermal shutdown

APPLICATIONS:

■CONSUMER: STB, DVD, TV, VCR,CAR RADIO, LCD MONITORS

■NETWORKING: XDSL, MODEMS,DC-DC MODULES

■COMPUTER: PRINTERS, AUDIO/GRAPHIC CARDS, OPTICAL STORAGE, HARD DISK DRIVE

■INDUSTRIAL: CHARGERS, CAR BATTERY DC-DC CONVERTERS