DESCRIPTION

The L5971 is a step down monolithic power switching regulator delivering 1.5A at a voltage between 1.26V and 20V (selected by a simple external divider). Realized in BCD mixed technology, the device uses an internal power D-MOS transistor (with a typical Rdson of 0.25Ω) to obtain very high efficency and high switching speed.

■ UP TO 1.5A STEP DOWN CONVERTER

■ OPERATING INPUT VOLTAGE FROM 6.5V TO 28V

■ PRECISE 1.26V (±1) INTERNAL REFERENCE VOLTAGE

■ OUTPUT VOLTAGE ADJUSTABLE FROM 1.26V TO 20V

■ SWITCHING FREQUENCY ADJUSTABLE UP TO 500KHz

■ VOLTAGE FEEDFORWARD

■ ZERO LOAD CURRENT OPERATION

■ INTERNAL CURRENT LIMITING (PULSE-BY-PULSE AND HICCUP MODE)

■ INHIBIT FOR ZERO CURRENT CONSUMPTION

■ PROTECTION AGAINST FEEDBACK DISCONNECTION

■ THERMAL SHUTDOWN

■ SOFT START FUNCTION

L5971属于集成电路（IC） > 稳压器 - DC-DC 开关稳压器。意法半导体（ST）集团制造生产的L5971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。