ST1S41中文资料4 A步降开关稳压器数据手册ST规格书

描述 Description

The ST1S41 is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S41 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.

The ST1S41 integrates 95 mΩ high-side switch and 69 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 ST1S41 is available in VFQFPN 4 mm x 4 mm 8-lead package and HSOP-8.

特性 Features

• 4 A output current
• 4.0 V to 18 V input voltage
• Output voltage adjustable from 0.8 V
• 850 kHz switching frequency
• Internal soft-start
• Integrated 95 mΩ and 69 mΩ power MOSFETs
• All ceramic capacitor
• Enable
• Cycle-by-cycle current limiting
• Current foldback short-circuit protection
• VFQFPN 4x4-8L and HSOP-8 packages

简介

ST1S41属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的ST1S41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。