The ST1S40IPUR device is an internally compensated 850 kHz fixed-frequency PWM synchronous step-down regulator. The ST1S40IPUR 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 ST1S40IPUR integrates a 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 ST1S40IPUR is available in HSOP-8, VFQFPN 4 mm x 4 mm - 8 lead, and standard SO8 package.
Feature
- 3 A DC 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
