ST1S31中文资料3 A DC步降开关稳压器数据手册ST规格书

描述 Description

The ST1S31 device is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator. The ST1S31 operates from 2.8 V to 5.5 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.

The ST1S31 integrates a 60 mΩ high-side switch and a 45 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.

The peak current mode control with internal compensation delivers a very compact solution with a minimum component count.

The ST1S31 device is available in 3 mm x 3 mm, 8 lead VFDFPN and SO8 packages.

特性 Features

• 3 A DC output current
• 2.8 V to 5.5 V input voltage
• Output voltage adjustable from 0.8 V
• 1.5 MHz switching frequency
• Internal soft-start and enable
• Integrated 60 mΩ and 45 mΩ power MOSFETs
• All ceramic capacitor
• Power Good (POR)
• Cycle-by-cycle current limiting
• Current foldback short-circuit protection
• VFDFPN 3 x 3 - 8L, SO8 packages

简介

ST1S31属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的ST1S31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。