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Micropower, 150mA Ultra Low-Dropout CMOS Voltage Regulator With Power Good


Package | PIN: DBV | 5
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $0.72
10-24 $0.64
25-99 $0.59
100-249 $0.51
250-499 $0.47
500-749 $0.38
750-999 $0.31
1000+ $0.27


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C4B
  • Operating Input Voltage 2.5 V to 6 V
  • Power-Good Flag Output
  • Logic-Controlled Enable
  • Stable With Ceramic and High-Quality Tantalum Capacitors
  • Fast Turnon
  • Thermal Shutdown and Short-Circuit Current Limit
  • 5-Pin SOT-23 Package

Texas Instruments  LP3988QMFX-2P85

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.