CM3112 Datasheet | California Micro Devices

Features - LDO regulator with Power Good - No capacitor required on the LDO output - Power Good (PG) control signal - Regulated 1.2V output .. - 150m A output current - Low quiescent operating current (90µA typical) - "Zero" disable mode current - Foldback current limiting protection - Thermal shutdown protection - SOT23-5 package - Micrel MIC5258, MIC5268 patible pinout - Lead-free version available Product Description The CM3112-12 is a low quiescent current (90u A) regulator that delivers up to 150m A of load current at a fixed 1.2V output. All the necessary circuitry has been included to deliver a 50Ω power good signal (open drain) which remains for 5ms after the output has exceeded 90% (typ) of its nominal level. A dedicated control input (EN, Active High) has been included for power-up sequencing flexibility. When this input is taken low, the regulator is disabled. In this state, the supply current will drop to near zero. An internal discharge MOSFET (500Ω) resistance will force the output to ground whenever the device has been shutdown. The CM3112-12 is fully protected, offering both overload current limiting and high temperature thermal shutdown. Housed in a tiny SOT23 package, the device is ideal for space critical applications and is also available with optional lead-free finishing. Applications - - - Pentium 4 Motherboards PC Cards Peripheral Adapter Cards Typical Application Circuit Simplified Electrical Schematic IN 1.2V/150m A OUT 1kΩ CM3112-12 VIN EN 0.1µF- GND IN EN GND 0.1µF- OUT PG VOUT PG VREF 1.2V + - + VREF X 0.93 2.5ms 1X - Optional © 2004 California Micro Devices Corp. All rights reserved. 01/20/04 430 N. Mc Carthy Blvd., Milpitas, CA 95035-5112 L Tel: 408.263.3214 L Fax: 408.263.7846 L .calmicro. PRELIMINARY CM3112 PACKAGE / PINOUT...