The ST1S32 is a 4A DC step-down switching regulator with an input voltage range of 2.8V to 5.5V. It features an adjustable output voltage down to 0.8V, a switching frequency of 1.5MHz, and internal soft-start and enable functions.
The ST1S32 is an internally compensated 1.5 MHz fixed-frequency PWM synchronous step-down regulator designed for high efficiency and low output voltages. It operates from a 2.8 V to 5.5 V input and regulates an output voltage as low as 0.8 V. The device integrates a 60 mΩ high-side switch and a 45 mΩ synchronous rectifier, allowing for a compact solution with a minimum component count. It is available in a 4mm x 4mm, 8-lead VFDFPN package.
| Output current | 4 A |
|---|---|
| Input voltage range | 2.8 V to 5.5 V |
| Output voltage range | 0.8 V to Vin |
| Switching frequency | 1.5 MHz |
| High-side switch resistance | 60 mΩ |
| Low-side switch resistance | 45 mΩ |
| Package | VFDFPN 8 4x4x1.0 |
The ST1S32 has a fixed switching frequency of 1.5 MHz.
The device can regulate an output voltage as low as 0.8 V.
The ST1S32 is rated for a maximum output current of 4 A.