LP5990 Datasheet, PDF (1/12 Pages) Intersil Corporation – Micropower 200mA CMOS Low Dropout Voltage Regulator General Description

December 18, 2007
LP5990
Micropower 200mA CMOS Low Dropout Voltage Regulator
General 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 tem-
perature 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 50mV increments}
■ 30 μA Quiescent current (enabled)
■ ^{10nA Quiescent current (disabled)}
■ ^{160mV dropout at 200mA load}
■ 60 μV_RMSOutput 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}
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
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