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1 Features

1? Qualified for Automotive Applications

? AEC-Q100 Qualified With the Following Results

– 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 I Q (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

2 Applications

? Infotainment

? Instrumentation

? Body Electronics

3 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 spacesaving

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.