LP2952A Datasheet | National Semiconductor

Description The LP2952 and LP2953 are micropower voltage regulators with very low quiescent current (130 µA typical at 1 m A load) and very low dropout voltage (typ. 60 m V at light load and 470 m V at 250 m A load current). They are ideally suited for battery-powered systems. Furthermore, the quiescent current increases only slightly at dropout, which prolongs battery life. The LP2952 and LP2953 retain all the desirable characteristics of the LP2951, but offer increased output current, additional features , and an improved shutdown function. The internal crowbar pulls the output down quickly when the shutdown is activated. The error flag goes low if the output voltage drops out of regulation. Reverse battery protection is provided. The internal voltage reference is made available for external use, providing a low-T.C. reference with very good line and load regulation. The parts are available in DIP and surface mount packages. Features n n n n n n n n n n Output voltage adjusts from 1.23V to 29V Guaranteed 250 m A output current Extremely low quiescent current Low dropout voltage Extremely tight line and load regulation Very low temperature coefficient Current and thermal limiting Reverse battery protection 50 m A (typical) output pulldown crowbar 5V and 3.3V versions available LP2953 Versions Only n Auxiliary parator included with CMOS/TTL patible output levels. Can be used for fault detection, low input line detection, etc. Applications n n n n High-efficiency linear regulator Regulator with under-voltage shutdown Low dropout battery-powered regulator Snap-ON/Snap-OFF regulator Block Diagrams LP2952 LP2953 DS011127-2 DS011127-1 © 1999 National Semiconductor Corporation DS011127 .national. Pinout Drawings LP2952 14-Pin DIP LP2953 16-Pin DIP DS011127-11 DS011127-13 LP2952 16-Pin SO LP2953 16-Pin SO DS011127-12 DS011127-14 Ordering Information LP2952 Order Number LP2952IN, LP2952AIN, LP2952IN-3.3, LP2952AIN-3.3 LP2952IM, LP2952AIM, LP2952IM-3.3,...