The LP3988-Q1 is a 150-mA low-dropout regulator designed specially to meet requirements
of portable battery applications. The LP3988-Q1 works with a space-saving 1-µF ceramic capacitor.
The LP3988-Q1 features an error flag-output that indicates a faulty output condition.
The LP3988-Q1 has performance optimized for battery-powered systems to deliver low noise,
extremely low dropout voltage, and low quiescent current. Regulator ground current increases only
slightly in dropout, further prolonging the battery life.
Power-supply rejection is better than 60 dB at low frequencies and starts to roll off at
10 kHz. The device maintains high power-supply rejection down to lower input voltage levels common
to battery-operated circuits.
The device is ideal for mobile phone and similar battery-powered wireless applications.
It provides up to 150 mA, from a 2.5-V to 6-V input, consuming less than 1 µA in disable mode, and
has fast turnon time less than 200 µs.
The LP3988-Q1 is available in a 5-pin SOT-23 package, has performance specified for the
−40°C to +125°C temperature range, and is available in a 2.85-V output voltage. For other voltage
options, contact TI sales.
For all available packages, see the orderable addendum at the
end of the data sheet.
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