SLVSFU8C January   2022  – June 2024 TPS62843

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 Smart Enable and Shutdown (EN)
      2. 7.3.2 Soft Start
      3. 7.3.3 VSET Pin: Output Voltage Selection
      4. 7.3.4 Undervoltage Lockout (UVLO)
      5. 7.3.5 Switch Current Limit, Short-Circuit Protection
      6. 7.3.6 Thermal Shutdown
      7. 7.3.7 Output Voltage Discharge
    4. 7.4 Device Functional Modes
      1. 7.4.1 Power Save Mode Operation
      2. 7.4.2 100% Mode Operation
  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
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 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 TPS62843 is a high-efficiency, step-down converter family with ultra-low operating quiescent current of typically 275nA. The device features a 4nA shutdown (typical) current when disabled.

The device uses DCS-Control with a low and RF-friendly output voltage ripple to power radios.

The device operates with a typical switching frequency of 1.5MHz and extends a high efficiency at light-load down to 100μA load current and below.

3 × 18 pre-defined output voltages can be selected by connecting a resistor to the VSET pin, making the family usable across various applications with a minimum set of passive components.

Device Information
PART NUMBER(2)VOUT RANGEPACKAGE(1)BODY SIZE (NOM)
TPS6284360.4V – 0.8VYKA
(DSBGA, 6)		0.80mm × 1.05mm × 0.40mm
TPS6284370.8V – 1.8V
TPS6284381.8V – 3.6V
TPS6284360.4V – 0.8VDRL (SOT563, 6)1.6mm × 1.6mm × 0.6mm
TPS6284370.8V – 1.8V
TPS6284381.8V – 3.6V
(1) For more information, see Section 11.
TPS62843 Typical ApplicationTypical Application
TPS62843 Efficiency vs Output Current at 3.6VINEfficiency vs Output Current at 3.6VIN