Description
The ST1S40IPHR device is an internally compensated 850 kHz fixed-frequency PWM synchronous stepdown regulator. The ST1S40IPHR 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 ST1S40IPHR integrates a 95 m high side switch and 69 m 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 ST1S40IPHR is available in HSOP-8, VFQFPN 4 mm x 4 mm - 8 lead, and standard SO8 package.
Features
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 m and 69 m Power MOSFETs
All ceramic capacitor
Enable
Cycle-by-cycle current limiting
Current fold back short-circuit protection
Available in HSOP-8, VFQFPN4x4-8L, and SO8 packages
Applications
P/ASIC/DSP/FPGA core and I/O supplies
Point of load for: STB, TVs, DVD
Optical storage, hard disk drive, printers,
audio/graphic cards
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
(Picture:Pinout / Diagram)
