EN

IN

OUT

GND

VIN

VEN

GND

VOUT

LP3990

COUT

1 µF

CIN

1 µF

OFF

ON

GND

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LP3990-Q1

SNVSA66A – OCTOBER 2014 – REVISED DECEMBER 2015

LP3990-Q1 150-mA Linear Voltage Regulator for Digital Applications

1 Features

3 Description

The LP3990-Q1 regulator is designed to meet the

1

•

Qualified for Automotive Applications

requirements of portable, battery-powered systems

•

AEC-Q100 Qualified With the Following Results

providing an accurate output voltage, low-noise, and

–

Device Temperature Grade 1: –40°C to

low-quiescent current. The LP3990-Q1 will provide a

+125°C Ambient Operating Temperature

0.8-V output from the low input voltage of 2 V at up to

a 150-mA load current. When switched into shutdown

Range

mode via a logic signal at the enable pin (EN), the

•

Input Voltage Range: 2 V to 6 V

power consumption is reduced to virtually zero.

•

1% Voltage Accuracy at Room Temperature

The LP3990-Q1 is designed to be stable with space-

•

Output Voltage Range: 0.8 V to 3.3 V

saving ceramic capacitors with values as low as 1 µF.

•

Output Current: 150 mA

Performance is specified for a –40°C to +125°C

•

Logic Controlled Enable

junction temperature range.

•

Thermal-Overload and Short-Circuit Protection

For output voltage options please refer to package

•

Virtually Zero IQ (Disabled), < 10 nA

option addendum (POA) or contact the Texas

•

Very Low IQ (Enabled): 43 µA

Instruments Sales Office.

•

Low Output Noise: 150 µVRMS

Device Information(1)

•

PSRR: 55 dB at 1 kHz

PART NUMBER

PACKAGE

BODY SIZE

•

Fast Start-Up: 105 µs

LP3990-Q1

DSBGA (4)

1.324 mm x 1.045 mm (MAX)

•

Stable with Ceramic Capacitor

(1) For all available packages, see the orderable addendum at

•

Output Stable - Capacitors, 1 µF

the end of the data sheet.

•

No Noise Bypass Capacitor Required

2 Applications

•

Infotainment

•

Instrumentation

•

Body Electronics

Simplified Schematic

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.