STMicroelectronics ST1S32
The ST1S32 is an internally compensated 1.5 MHz fixed-frequency PWM synchronous stepdown regulator. The ST1S32 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 ST1S32 integrates a 60 mΩ high-side switch and a 45 mΩ synchronous rectifier, allowing very high efficiency with very low output voltages.| Part No. | ST1S32 |
|---|---|
| Datasheet | ST1S32 Download |
| Manufacturer |  STMicroelectronics |
| Description | 4A DC step-down switching regulator |
| Buy | Stock & Price |
FEATURES
● 4 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 8 4x4x1.0 package
APPLICATIONS
● µP/ASIC/DSP/FPGA core and I/O supplies● Point of Load for: STB, TV, DVD
● Optical storage, hard disk drives, printers, audio/graphic cards VFDFPN 8 4x4x1.0
DESCRIPTION
The peak current mode control with internal compensation delivers a very compact solution with a minimum component count. The ST1S32 is available in 4 mm x 4 mm, 8-lead VFDFPN package. Figure 1. Application circuit L VIN VOUT VINSW SW VINA Cin_a R3 EN ST1S32 R1 Cin_sw PG GND VFB Cout R2 May 2012 This is information on a product in full production. Doc ID 023246 Rev 1 AM12608V1 1/29 29 Contents Contents ST1S32 1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
