SNVSA66A October   2014  – December 2015 LP3990-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Output Capacitor, Recommended Specifications
    7. 6.7 Timing Requirements
    8. 6.8 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Enable (EN)
      2. 7.3.2 Thermal Overload Protection (TSD)
    4. 7.4 Device Functional Modes
      1. 7.4.1 Enable (EN)
      2. 7.4.2 Minimum Operating Input Voltage (VIN)
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Power Dissipation and Device Operation
        2. 8.2.2.2 External Capacitors
        3. 8.2.2.3 Input Capacitor
        4. 8.2.2.4 Output Capacitor
        5. 8.2.2.5 No-Load Stability
        6. 8.2.2.6 Capacitor Characteristics
        7. 8.2.2.7 Enable Control
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
    3. 10.3 DSBGA Mounting
    4. 10.4 DSBGA Light Sensitivity
  11. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Community Resources
    3. 11.3 Trademarks
    4. 11.4 Electrostatic Discharge Caution
    5. 11.5 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

1 Features

  • 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 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

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 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.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE
LP3990-Q1 DSBGA (4) 1.324 mm x 1.045 mm (MAX)
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

LP3990-Q1 sch_simplified_snvs251.gif