ST1S50中文资料轻载高效4A单片式同步降压转换器数据手册ST规格书

描述 Description

The ST1S50 device is a 500 kHz fixed frequency PWM synchronous step-down regulator. The ST1S50 operates from 4.0 V to 18 V input, while it regulates an output voltage as low as 0.8 V and up to 0.88 x VIN.

The ST1S50 device integrates a 95 mΩ high-side switch and a 69 mΩ synchronous rectifier allowing very high efficiency with very low output voltages.

The peak current mode control with a special PFM mode enables high efficiency at a light load.

The ST1S50 device is available in a VFDFPN10 3 x 3 x 1 mm - 10 leads package.

特性 Features

• 4 A output current
• 4.0 V to 18 V input voltage
• Output voltage adjustable from 0.8 V to 0.88 x VIN
• 500 kHz switching frequency
• High efficiency at light load
• Programmable soft-start and enable
• Integrated 95 mΩ and 69 mΩ power MOSFETs
• All ceramic capacitor
• Power Good
• Cycle-by-cycle current limiting
• Short-circuit protection
• VFDFPN10 3 x 3 x 1 mm - 10 L

简介

ST1S50属于集成电路（IC）的稳压器-DC-DC开关稳压器。由制造生产的ST1S50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。