SC338IMSTRT

Product Summary

The SC338IMSTRT is an ultra low output voltage dual power supply controller designed to simplify power management for notebook PCs. The applications of the SC338IMSTRT include Notebook PCs and Simple dual power supplies. The SC338IMSTRT features for each output include tight output voltage regulation, enable controls, open drain power good signals, under-voltage protection and soft start. The enable pins allow the part to enter a very low power standby mode. Pulling them high enables the outputs. The power good pins are open drain and assert low when the voltage at their respective adjust pins is below 88% (typ.) of nominal. If the voltage at the adjust pin is below 50% (typ.) of nominal, the under voltage protection circuitry will shut down that output. The SC338IMSTRT is available in an MSOP-10 surface mount package.

Parametrics

SC338IMSTRT absolute maximum ratings: (1)Input Supply Voltage, VIN: -0.3 to +13.2 V; (2)Drive Pins, VDRV: -0.3 to +8.0 V; (3)Adjust and Power Good Pins, VADJ, VPGD: -0.3 to +5.5V; (4)Enable Pins, VEN: -0.3V to VIN; (5)Thermal Impedance Junction to Ambient, θJA: 113℃/W; (6)Thermal Impedance Junction to Case, θJC: 42℃/W; (7)Operating Ambient Temperature Range, TA: -40 to +85℃; (8)Operating Junction Temperature Range, TJ: -40 to +125℃; (9)Storage Temperature Range, TSTG: -65 to +150℃; (10)Lead Temperature (Soldering) 10 Sec, TLEAD: 300℃; (11)ESD Rating (Human Body Model), VESD: 2kV.

Features

SC338IMSTRT features: (1)±1.5% and ±2.5% reference voltage options available; (2)Two independant and fully adjustable outputs; (3)Wide supply voltage range permits operation from 5V or 12V rails; (4)Very low quiescent current (500μA typical with both outputs enabled and 5V input); (5)Indivdual Enable control for each output; (6)Individual Power Good monitoring and signalling for each output; (7)Gate drives from input supply enable use of N-channel MOSFETs; (8)User selectable dropout voltage; (9)Individual under-voltage protection for each output; (10)MSOP-10 surface mount package.

Diagrams