LP5990

LP5990 www.ti.com SNVS438B – APRIL 2007 – REVISED DECEMBER 2007 LP5990 Micropower 200mA CMOS Low Dropout Voltage Regulator Check for Samples: LP5990 FEATURES 1 2 Operation from 2.2V to 5.5V Input ±1% Accuracy Over Temp Range Output Voltage from 0.8V to 3.6V in 50mV Increments 30 μA Quiescent Current (Enabled) 10nA Quiescent Current (Disabled) 160mV Dropout at 200mA Load 60 μVRMSOutput Voltage Noise 60 μs Start-Up Time 500μs Shut-Down Time PSRR 55 dB at 10 kHz Stable with 0402 1.0µF Ceramic Capacitors Logic Controlled Enable Thermal–Overload and Short–Circuit Protection APPLICATIONS Cellular Phones Hand–Held Information Appliances PACKAGE 4-Bump DSBGA, 0.4 mm Pitch 866 µm x 917 µm (Lead Free) 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 200mA 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 DSBGA Package (0.4mm pitch) and...