SGLS303F May 2005  – April 2016 TPS732-Q1


  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Switching Characteristics
    7. 6.7Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1Internal Current Limit
      2. 7.3.2Shutdown
      3. 7.3.3Dropout Voltage
      4. 7.3.4Transient Response
      5. 7.3.5Reverse Current
      6. 7.3.6Thermal Protection
    4. 7.4Device Functional Modes
      1. 7.4.1Normal Operation
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
        1. and Output Capacitor Requirements
        2. Noise
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
    3. 10.3Power Dissipation
    4. 10.4Package Mounting
  11. 11Device and Documentation Support
    1. 11.1Documentation Support
      1. 11.1.1Related Documentation
    2. 11.2Community Resources
    3. 11.3Trademarks
    4. 11.4Electrostatic Discharge Caution
    5. 11.5Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information

1 Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results
    • Device Temperature Grade 0: –40°C to 150°C Ambient Operating Temperature Range
    • Device HBM Classification Level 2
    • Device CDM Classification Level C4B
    • Device MM Classification Level M2
  • Stable With No Output Capacitor or Any Value or Type of Capacitor
  • Input Voltage Range: 1.7 V to 5.5 V
  • Ultra-Low Dropout Voltage: 40-mV Typical at 250 mA
  • Excellent Load Transient Response—With or Without Optional Output Capacitor
  • New NMOS Topology Provides Low Reverse Leakage Current
  • Low Noise: 30-μVRMS Typical (10 kHz to 100 kHz)
  • 0.5% Initial Accuracy
  • 1% Overall Accuracy (Line, Load, and Temperature)
  • Less Than 1-μA Maximum IQ in Shutdown Mode
  • Thermal Shutdown and Specified Minimum and Maximum Current Limit Protection
  • Available in Multiple Output Voltage Versions
    • Fixed Outputs of 1.2 V, 1.5 V, 1.6 V, 1.8 V,
      2.5 V, 3 V, 3.3 V, and 5 V
    • Adjustable Outputs From 1.2 V to 5.5 V
    • Custom Outputs Available

2 Applications

  • Portable and Battery-Powered Equipment
  • Post-Regulation for Switching Supplies
  • Noise-Sensitive Circuitry Such as VCOs
  • Point of Load Regulation for DSPs, FPGAs, ASICs, and Microprocessors

3 Description

The TPS732-Q1 family of low-dropout (LDO) voltage regulators uses a new topology: an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low ESR, and even allows operation without a capacitor. The topology also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS732-Q1 family of devices uses an advanced BiCMOS process to yield high precision while delivering low dropout voltages and low ground pin current. Current consumption, when not enabled, is under 1 μA and ideal for portable applications. The extremely low output noise (30 μVRMS with 0.1-µF CNR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit.

Device Information(1)

TPS73201-Q1SOT-23 (5)2.90 mm × 1.60 mm
VSON (8)3.00 mm × 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

Typical Application Circuit for Fixed Voltage Versions

TPS732-Q1 typ_app_cx_front_gls303.gif