产品概述

描述

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 V_IN. 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.

所有功能
4 A output current

4.0 V to 18 V input voltage

Output voltage adjustable from 0.8 V to 0.88 x V_IN

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
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