LP5990 Datasheet | National Semiconductor

Description The LP5990 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low noise and low quiescent current. The LP5990 will provide a 1.8V output from a low input voltage of 2.2V and can provide 200m A to an external load. When switched into shutdown mode via a logic signal at the enable pin, the power consumption is reduced to virtually .. zero. Fast shut-down is achieved by the push pull architecture. The LP5990 is designed to be stable with space saving 0402 ceramic capacitors as small as 1µF, this gives an overall solution size of < 2.5mm 2. Performance is specified for a -40°C to 125°C junction temperature range. The device is available in micro SMD Package (0.4mm pitch) and is available with 1.2V,1.3V,1.8V,2.8V,3.0V,3.3V and 3.6V outputs.Lower voltage options down to 0.8V are available on request. For all other output voltage options please contact your local NSC sales office. Features - - - - - - - - - - - - - Operation from 2.2V to 5.5V input ±1% accuracy over temp range Output voltage from 0.8V to 3.6V in 50m V increments 30 μA Quiescent current (enabled) 10n A Quiescent current (disabled) 160m V dropout at 200m A load 60 μVRMSOutput voltage noise 60 μs start-up time 500μs shut-down time PSRR 55 d B at 10 k Hz Stable with 0402 1.0µF ceramic capacitors Logic controlled enable Thermal- overload and short- circuit protection Package 4-Bump micro SMD,0.4mm pitch (lead free) 866 µm x 917 µm Applications - Cellular phones - Hand- held information appliances Typical Application Circuit © 2007 National Semiconductor Corporation .national. Connection Diagrams 4-Bump Thin micro SMD Package, 0.4mm pitch NS Package Number TMD04 .. The actual physical placement of the package marking will vary from part to part. Pin Descriptions Pin No. micro SMD A2 A1 B1 B2 VEN GND VOUT VIN Enable input; disables the regulator when ≤ 0.35V. Enables the regulator when ≥ 1.0V....