ST890CD STMicroelectronics

ST890 1.2 A current limited high-side power switch with thermal shutdown Datasheet - production data Features 2.7 to 5.5 V input range Programmable current limit up to 1.2 A Low quiescent current SO-8 Thermal shutdown Active-low FAULT indicator output 90 m (typ.) ON resistance SO-8 and DFN8L (3 x 3 mm) packages DFN8L Applications (3 x3mm) PCMCIA slots Access bus slots Portable equipment The internal current limiting circuitry protects the input supply against overload. The thermal Description overload protection limits power dissipation and junction temperatures. The ST890 device is a low voltage, P-channel MOSFET power switch intended for high-side The maximum current limit is 1.2 A. The current load switching applications. limit through the switch is programmed with a resistor from SET to ground. The devices are The switch operates with inputs from 2.7 V available in SO-8 and DFN8L (3 x 3 mm) to 5.5 V, making it ideal for both 3 V and 5 V packages. systems. Table 1. Device summary Order code Package Packaging ST890BDR SO-8 2500 parts per reel ST890CDR SO-8 2500 parts per reel ST890DTR DFN8L (3 x 3 mm) 3000 parts per reel January 2013 Doc ID 8649 Rev 9 1/21 This is information on a product in full production. www.st.com 21Contents ST890 Contents 1 Device summary 3 2 Maximum rating . 6 2.1 Functional description 9 2.1.1 Output current limit . 9 2.1.2 Output short-circuit protection . 9 2.1.3 Programming I 9 LIM 2.1.4 FAULT pin . 10 2.1.5 Thermal protection . 10 2.2 Typical performance characteristics . 11 3 Package mechanical data 13 4 Revision history . 20 2/21 Doc ID 8649 Rev 9