SGLS246B June   2004  – October 2016 TPS60400-Q1 , TPS60401-Q1 , TPS60402-Q1 , TPS60403-Q1

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Charge-Pump Output Resistance
      2. 8.3.2 Efficiency Considerations
    4. 8.4 Device Functional Modes
      1. 8.4.1 Active-Schottky Diode
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 Capacitor Selection
        2. 9.2.2.2 Input Capacitor (CI)
        3. 9.2.2.3 Flying Capacitor (C(fly))
        4. 9.2.2.4 Output Capacitor (CO)
        5. 9.2.2.5 Power Dissipation
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 RC-Post Filter
      2. 9.3.2 LC-Post Filter
      3. 9.3.3 Rail Splitter
      4. 9.3.4 Combined Doubler/Inverter
      5. 9.3.5 Cascading Devices
      6. 9.3.6 Paralleling Devices
      7. 9.3.7 Shutting Down the TPS6040x-Q1
      8. 9.3.8 GaAs Supply
      9. 9.3.9 Step-Down Charge Pump
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Related Links
    2. 12.2 Receiving Notification of Documentation Updates
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

1 Features

  • Qualified for Automotive Applications
  • AEC-Q100 Test Guidance With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Inverts Input Supply Voltage
  • Up to 60-mA Output Current
  • Only Three Small 1-µF Ceramic Capacitors Needed
  • Input Voltage Range From 1.8 V to 5.25 V
  • PowerSave-Mode for Improved Efficiency at Low Output Currents (TPS60400-Q1)
  • Device Quiescent Current Typical: 100 µA
  • Integrated Active Schottky-Diode for Start-Up Into Load
  • Small 5-Pin SOT23 Package
  • Evaluation Module Available: TPS60400EVM-178

2 Applications

  • Automotive Infotainment
  • Automotive Cluster
  • LCD Displays
  • Negative Supply Voltages

3 Description

The TPS6040x-Q1 family of devices generate an unregulated negative output voltage from an input voltage ranging from 1.8 V to 5.25 V. The devices are typically supplied by a preregulated supply rail of 5 V or 3.3 V. Due to its wide-input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell, can also power them.

Only three external 1-μF capacitors are required to build a complete DC-DC charge pump inverter. Assembled in a 5-pin SOT-23 package, the complete converter can be built on a 50-mm2 board area. Replacing the Schottky diode typically needed for start-up into load with integrated circuitry can achieve additional board area and component count reduction.

The TPS6040x-Q1 can deliver a maximum output current of 60 mA, with a typical conversion efficiency of greater than 90% over a wide output current range. Three device options TPS60401/2/3-Q1 with 20-kHz, 50-kHz, and 250-kHz fixed frequency operation are available. TPS60400-Q1 device comes with a variable switching frequency to reduce operating current in applications with a wide load range and enables the design with low-value capacitors.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS6040x-Q1 SOT-23 (5) 2.80 mm × 2.90 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Typical Application Circuit

TPS60400-Q1 TPS60401-Q1 TPS60402-Q1 TPS60403-Q1 typ_app_01_sgls246.gif

Output Voltage vs Input Voltage

TPS60400-Q1 TPS60401-Q1 TPS60402-Q1 TPS60403-Q1 typ_app_02_sgls246.gif