1FEATURES

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 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 TI sales office.