SNVS192C October   2002  – November 2015 LP3992

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 Timing Requirements
    7. 6.7 Typical Characteristics
  7. 7 Parameter Measurement Information
    1. 7.1 Input Test Signals
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Shutdown and Enable
      2. 8.3.2 Fast Turnon and Turnoff
    4. 8.4 Device Functional Modes
      1. 8.4.1 Enable Operation
  9. 9 Application And Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 External Capacitors
        2. 9.2.2.2 Input Capacitor
        3. 9.2.2.3 Output Capacitor
        4. 9.2.2.4 No-Load Stability
        5. 9.2.2.5 Capacitor Characteristics
        6. 9.2.2.6 Power Dissipation
        7. 9.2.2.7 Estimating Junction Temperature
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 Community Resources
    3. 12.3 Trademarks
    4. 12.4 Electrostatic Discharge Caution
    5. 12.5 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

Package Options

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

1 Features

  • Input Voltage: 1.9 V to 5.2 V
  • Operation From a Low Input Voltage: 1.9 V
  • Accurate Output Voltage: 1.5 V ± 0.09 V
  • Quiescent Current in Shutdown: < 1.5 µA
  • Stable With an Output Capacitor: 1 µF
  • Ensured Output Current: 30 mA
  • Low Output Voltage Noise: 300 µVRMS
  • Low Quiescent Current: 29-µA Typical
  • Stable With a Ceramic Capacitor
  • Logic Controlled Enable
  • Fast Turnon and Turnoff
  • Thermal-Overload and Short-Circuit Protection
  • –40°C to +125°C Junction Temperature Range

2 Applications

  • GSM Portable Phones
  • CDMA Cellular Handsets
  • Wideband CDMA Cellular Handsets
  • Bluetooth Devices
  • Portable Information Appliances

3 Description

The LP3992 regulator is designed to meet the requirements of portable, battery-powered systems providing an accurate output voltage, low noise, and low quiescent current. Battery life is prolonged by the ability of the LP3992 to provide a 1.5-V output from the low input voltage of 1.9 V. Additionally, when switched to a shutdown mode via a logic signal at the enable (EN) pin, the power consumption is reduced to virtually zero. The LP3992 also features short-circuit and thermal-shutdown protection.

The LP3992 is designed to be stable with space-saving ceramic capacitors as small as 1 µF. Performance is specified for a –40°C to +125°C temperature range.

For output voltages other than 1.5 V, and for additional package options, contact TI.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
LP3992 SOT-23 (5) 2.90 mm × 1.60 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application

LP3992 typapp_snvs192.gif