ST ST1S40IPHR

Step-DownБак4V18V3A

Overview

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 

Features

Applications

• Computer application technology
• Network technology
• Automation technology
• CMM
• Various precision measuring instruments
• Various precision measuring detectors
• Flaw detection equipment
• Balance equipment
• Industrial robots
• Industrial controllers