ST890BDR STMicroelectronics

ST890 1.2 A current limited high-side power switch with thermal shutdown Datasheet - production data Applications PCMCIA slots Access bus slots Portable equipment Description The ST890 device is a low voltage, P-channel MOSFET power switch intended for high-side load switching applications. The switch operates with inputs from 2.7 V to 5.5 V, making it ideal for both 3 V and 5 V systems. The internal current limiting circuitry protects the Features input supply against overload. The thermal 2.7 to 5.5 V input range overload protection limits power dissipation and Programmable current limit up to 1.2 A junction temperatures. Low quiescent current The maximum current limit is 1.2 A. The current Thermal shutdown limit through the switch is programmed with a Active-low FAULT indicator output resistor from SET to ground. The devices are available in SO8 and DFN8L 3x3 packages. 90 m (typ.) ON resistance SO8 and DFN8L 3x3 packages December 2016 DocID8649 Rev 10 1/19 www.st.com This is information on a product in full production. Contents ST890 Contents 1 Device summary .............................................................................. 3 2 Pinout information ........................................................................... 4 3 Absolute maximum ratings and operating conditions ................. 5 4 Electrical information ...................................................................... 6 4.1 Characteristics and timings ............................................................... 6 4.2 Application circuit .............................................................................. 7 4.3 Functional description ....................................................................... 7 4.3.1 Output current limit ............................................................................. 7 4.3.2 Output short-circuit protection ............................................................ 7 4.3.3 Programming I ................................................................................ 8 LIM 4.3.4 pin........................................................................................... 8 4.3.5 Thermal protection .............................................................................. 8 4.4 Typical performance characteristics .................................................. 9 5 Package information ..................................................................... 10 5.1 SO8 package information ................................................................ 11 5.2 SO8 tape and reel information ........................................................ 12 5.3 DFN8L 3x3 package information ..................................................... 13 5.4 DFN8L 3x3 tape and reel information ............................................. 15 6 Ordering information ..................................................................... 17 7 Revision history ............................................................................ 18 2/19 DocID8649 Rev 10