LMS5214 Datasheet | National Semiconductor

Description The LMS5214 is a µCap, low dropout voltage regulator with very low quiescent current, 110µA typical, at 80m A load. It also has very low dropout voltage, typically 2m V at light load and 300m V at 80m A. The LMS5214 is an enhanced version of the industry standard LMS5213 with auto discharge function which actively discharges the output voltage to ground when the device is placed in shutdown mode. It provides up to 80m A and consumes a typical of 10n A in disable mode, which helps to extend the battery life. The LMS5214 is optimized to work with low value, low cost ceramic capacitors. The output typically requires only 470n F of output capacitance for stability. The enable pin can be tied to VIN for easy device layout. Low ground current at full load and small package makes the LMS5214 ideal for portable, battery powered equipment applications with small space requirements. The LMS5214 is available in a space saving 5-pin SC70 package. Performance is specified for the - 40˚C to +125˚C temperature range and is available in 2.5V, 2.6V, 2.8V, 2.9V, 3.0V and 3.3V fixed voltages. For other output voltage options, please contact National Semiconductor. Features (Typical unless noted) n Space saving SC70 package n Low quiescent current: 70µA n Low dropout voltage: 2m V n Stability with low-ESR ceramic capacitors n Auto discharge n Fast turn-on n Low temperature coefficient n Current and thermal limiting n Zero current in shutdown mode n Pin-to-pin patible with LMS5213 Applications n n n n n Cellular Phones Battery-powered equipment Bar code scanner Laptops, notebooks, PDA’s High-efficiency linear power supplies Typical Application © 2002 National Semiconductor Corporation DS200431 .national. Simplified Schematic Pin Description Pin Number 1 Pin Name VEN Pin Function Enable Input Logic, Logic High = Enabled Logic Low = Shutdown Not internally connected Ground Output Voltage Input Voltage 2 3 4 5 NC GND VOUT VIN .national. LMS521...