SLVSI54 May   2025 TPS60800-Q1

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison Table
  6. 5 Pin Configuration and Functions
  7. 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 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Charge-Pump Output Resistance
      2. 7.3.2 Efficiency Considerations
    4. 7.4 Device Functional Modes
      1. 7.4.1 Active-Schottky Diode
  9. 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 Capacitor Selection
        2. 8.2.2.2 Input Capacitor (CI)
        3. 8.2.2.3 Flying Capacitor (C(fly))
        4. 8.2.2.4 Output Capacitor (CO)
        5. 8.2.2.5 Power Dissipation
      3. 8.2.3 Application Curve
    3. 8.3 System Examples
      1. 8.3.1 RC-Post Filter
      2. 8.3.2 Rail Splitter
      3. 8.3.3 Combined Doubler, Inverter
      4. 8.3.4 Cascading Devices
      5. 8.3.5 Paralleling Devices
      6. 8.3.6 Step-Down Charge Pump
    4. 8.4 Power Supply Recommendations
    5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Third-Party Products Disclaimer
    2. 9.2 Receiving Notification of Documentation Updates
    3. 9.3 Support Resources
    4. 9.4 Trademarks
    5. 9.5 Electrostatic Discharge Caution
    6. 9.6 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

3 Description

The TPS60800-Q1 generates an unregulated negative output voltage from an input voltage ranging from 1.8V to 5.25V. The devices are typically supplied by a preregulated supply rail of 5V or 3.3V. As TPS60800-Q1 supports wide input voltage range, two or three NiCd, NiMH, or alkaline battery cells, as well as one Li-Ion cell can also power the device.

Only three external 1µF capacitors are required to build a complete DC-DC charge pump inverter. Assembled in a 6-pin SOT563 package, the complete converter can be built on a 40mm2 board area. Additional board area and component count reduction is achieved by replacing the Schottky diode that is typically needed for start-up into load by integrated circuitry.

The TPS60800-Q1 can deliver a maximum output current of 200mA with a typical conversion efficiency of greater than 90% over a wide output current range. TPS60800-Q1 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.

Package Information
PART NUMBERPACKAGE(1)PACKAGE SIZE(2)
TPS60800-Q1DRL (SOT563, 6)1.6mm × 1.6mm
(1) For more information, see Section 11.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
TPS60800-Q1 Typical ApplicationTypical Application
TPS60800-Q1 Output Voltage vs Input VoltageOutput Voltage vs Input Voltage