DESCRIPTION
A very high switching frequency (200/300 KHz or externally synchronizable) optimizes their physical dimensions. Synchronous rectification and pulse skipping mode for the buck sections optimise the overall efficiency over a wide load current range. The two high performance PWM controllers for 1.8V and 2.5V lines are monitored for overvoltage, undervoltage and overcurrent conditions. On detection of a fault, a POWER GOOD signal is generated and a specific shutdown procedure takes place to prevent physical damage and data corruption. A disable function allows to manage the output power sections separately, optimising the quiescent consumption of the IC in stand-by conditions. 2.5V 5V to 25V L5994 POWER SECTION 1.8V SYNC 12V LDO 5.1V LDO POWER MANAGEMENT & SYSTEM SUPERVISOR 3.39V REF POWER GOOD µP MEMORY PERIPHERALS D98IN862 September 1999 This is preliminary information on a new product now in development. Details are subject to change without notice. 1/8 L5994 ABSOLUTE MAXIMU...
STMicroelectronics
