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LP3990-Q1
  • LP3990-Q1

LP3990-Q1

ACTIVE

Automotive 150-mA, low-IQ, low-dropout voltage regulator with enable

Texas Instruments LP3990-Q1 Product Info

1 April 2026 2

Parameters

Rating

Automotive

Vin (max) (V)

6

Vin (min) (V)

2

Iout (max) (A)

0.15

Output options

Fixed Output

Vout (max) (V)

3.3

Vout (min) (V)

0.8

Fixed output options (V)

1.2, 1.8, 2.8

Noise (µVrms)

150

PSRR at 100 KHz (dB)

35

Iq (typ) (mA)

0.043

Features

Enable

Thermal resistance θJA (°C/W)

189

Load capacitance (min) (µF)

1

Regulated outputs (#)

1

Accuracy (%)

2

Dropout voltage (Vdo) (typ) (mV)

120

Operating temperature range (°C)

-40 to 125

Package

DSBGA (YZR)-4-1.5625 mm² 1.25 x 1.25

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • o Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
  • Input Voltage Range: 2 V to 6 V
  • 1% Voltage Accuracy at Room Temperature
  • Output Voltage Range: 0.8 V to 3.3 V
  • Output Current: 150 mA
  • Logic Controlled Enable
  • Thermal-Overload and Short-Circuit Protection
  • Virtually Zero IQ (Disabled), < 10 nA
  • Very Low IQ (Enabled): 43 µA
  • Low Output Noise: 150 µVRMS
  • PSRR: 55 dB at 1 kHz
  • Fast Start-Up: 105 µs
  • Stable with Ceramic Capacitor
  • Output Stable - Capacitors, 1 µF
  • No Noise Bypass Capacitor Required
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • o Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
  • Input Voltage Range: 2 V to 6 V
  • 1% Voltage Accuracy at Room Temperature
  • Output Voltage Range: 0.8 V to 3.3 V
  • Output Current: 150 mA
  • Logic Controlled Enable
  • Thermal-Overload and Short-Circuit Protection
  • Virtually Zero IQ (Disabled), < 10 nA
  • Very Low IQ (Enabled): 43 µA
  • Low Output Noise: 150 µVRMS
  • PSRR: 55 dB at 1 kHz
  • Fast Start-Up: 105 µs
  • Stable with Ceramic Capacitor
  • Output Stable - Capacitors, 1 µF
  • No Noise Bypass Capacitor Required

Description

The LP3990-Q1 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low-noise, and low-quiescent current. The LP3990-Q1 will provide a 0.8-V output from the low input voltage of 2 V at up to a 150-mA load current. When switched into shutdown mode via a logic signal at the enable pin (EN), the power consumption is reduced to virtually zero.

The LP3990-Q1 is designed to be stable with space-saving ceramic capacitors with values as low as 1 µF.

Performance is specified for a –40°C to +125°C junction temperature range.

For output voltage options please refer to package option addendum (POA) or contact the Texas Instruments Sales Office.

For all available packages, see the orderable addendum at the end of the data sheet.

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