LMS5258 Datasheet | National Semiconductor

Description The LMS5258 is a μCap, precise CMOS voltage regulator with power good output. It provides up to 150m A and consumes a typical of 10n A in shutdown mode. The LMS5258 output stage is designed with a push pull output for faster transient response. The LMS5258 is optimized to work with low value, low cost ceramic capacitors. The output typically require only 1μF of output capacitance for stability. The enable pin can be tied to VIN for easy device layout. The LMS5258 is designed for portable, battery powered equipment applications with small space requirements. The LMS5258 is available in a 5-pin SOT-23 package. Performance is specified for the - 40°C to +125°C temperature range and is available in a fixed 1.2V. For other output voltage options, please contact National Semiconductor. Features - Power good indicator - Stability with low ESR capacitors - Low ground current: 120μA - 150m A output current - "Zero" shutdown mode current - Fast transient response - Auto Discharge - Thermal shutdown - Current limiting - TTL-Logic-controlled enable input - Pin-to-pin replacement for MIC5258 Applications - Processor power-up sequencing - Laptop, notebook and palm top puter - PCMCIA VCC and VPP regulation switching Typical Application Pin Descriptions Pin Number 1 2 3 4 5 Pin Name VIN GND EN PG VOUT Pin Function Input Voltage Ground Enable Input Logic, Logic High = Enabled Logic Low = Shutdown (Do not leave open) Power Good Output Output Voltage © 2011 National Semiconductor Corporation 200424 200424 Version 3 Revision 2 Print Date/Time: 2011/10/13 11:15:31 .national. Connection Diagram SOT23-5 Ordering Information Package 5-Pin SOT-23 Part Number LMS5258MF-1.2...