L4992 Datasheet (STMicroelectronics) - TRIPLE OUTPUT POWER SUPPLY CONTROLLER

L4992, TRIPLE OUTPUT POWER SUPPLY CONTROLLER

The L4992 is a sophisticated dual PWM stepdown controller and power monitor intended for Notebook computer and/or battery powered equipment.

The device produces regulated +3.3V, +5.1V and 12V supplies for use in portable SYSTEM BLOCK DIAGRAM TQFP32 ORDERING NUMBER: L4992 and PCMCIA applications.

® L4992 TRIPLE OUTPUT POWER SUPPLY CONTROLLER DUAL PWM BUCK CONTROLLERS (3.3V and 5.1V) 12V/120mA LINEAR REGULATOR DUAL SYNCH RECTIFIERS DRIVERS 96% EFFICIENCY ACHIEVABLE 50µA (@ 12V) STAND BY CONSUMPTION 5.5V TO 25V SUPPLY VOLTAGE EXCELLENT LOAD TRANSIENT RESPONSE DISABLE PULSE SKIPPING FUNCTION POWER MANAGEMENT: - UNDER AND OVERVOLTAGE OUTPUT DETECTION - POWER GOOD SIGNAL - SEPARATED DISABLE THERMAL SHUTDOWN PACKAGE: TQFP32 APPLICATION NOTEBOOK AND SUBNOTEBOOK COMPUTERS PEN TOP AND PORTABLE