LP5951 Datasheet | National Semiconductor

Description The LP5951 regulator is designed to meet the requirements of portable, battery-powered systems providing a regulated output voltage and low quiescent current. When switched to shutdown mode via a logic signal at the Enable pin, the power consumption is reduced to virtually zero. The LP5951 is designed to be stable with small 1µF/1.5µF ceramic capacitors. The LP5951 also features internal protection against shortcircuit currents and over-temperature conditions. Performance is specified for a -40˚C to 125˚C temperature range. The device is currently available in SOT23-5 package and will be available in SC70-5 package soon. The device is available in fixed output voltages in the range of 1.3V to 3.3V. For availability, please contact your local NSC sales office. Features n n n n n n n n n n n n n Excellent line transient response: ± 2m V typ. Excellent PSRR: -60d B at 1k Hz typ. Low quiescent current of 29µA typ. 1.8 to 5.5V input voltage range Small SOT23-5 package Fast turn-on time of 30µs typ. Typ. < 1n A quiescent current in shutdown Guaranteed 150m A output current Output voltage range: 1.3V to 3.3V Logic controlled enable 0.4V/0.9V Good load transient response of 50m Vpp typ. Thermal-overload and short-circuit protection -40˚C to +125˚C junction temperature range Applications n General purpose Typical Application Circuit . Data Shee . © 2006 National Semiconductor Corporation DS201362 .national. .. Connection Diagram 5-Lead Small Outline Package SOT23-5 (MF) Top View See NS Package Number MF05A Pin Descriptions Pin Number 1 2 3 4 5 Pin Name VIN GND EN NC VOUT Description Input Voltage. Input range: 1.8V to 5.5V Ground Enable pin logic input: Low = shutdown, High = normal operation. This pin should not be left floating. No internal connection Regulated output voltage et4U. Data Shee . Order Information For 5-Lead Small Outline Package SOT23-5 (MF) Output Voltage (V) 1.3 1.5 1.8 2.0 2.5 2.8 3.0 3.3 LP5951 Supplied as...