SLVSFU8B January   2022  – September 2023 TPS62843

PRODMIX  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Device Comparison Table
  7. 6 Pin Configuration and Functions
  8. 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
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Smart Enable and Shutdown (EN)
      2. 8.3.2 Soft Start
      3. 8.3.3 VSET Pin: Output Voltage Selection
      4. 8.3.4 Undervoltage Lockout (UVLO)
      5. 8.3.5 Switch Current Limit, Short-Circuit Protection
      6. 8.3.6 Thermal Shutdown
      7. 8.3.7 Output Voltage Discharge
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power Save Mode Operation
      2. 8.4.2 100% Mode Operation
  10. 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
      3. 9.2.3 Application Curves
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Receiving Notification of Documentation Updates
    3. 10.3 Support Resources
    4. 10.4 Trademarks
    5. 10.5 Electrostatic Discharge Caution
    6. 10.6 Glossary
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • YKA|6
  • DRL|6
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Description

The TPS62843 is a high-efficiency, step-down converter family with ultra-low operating quiescent current of typically 275 nA. The device features a 4-nA 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 1.5 MHz and extends a high efficiency at light-load down to 100-μA load current and below.

3 x 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(3) VOUT RANGE PACKAGE(1) BODY SIZE (NOM)

TPS628436

 0.4 V – 0.8 V YKA
(DSBGA, 6)		 0.80 mm × 1.05 mm × 0.40 mm

TPS628437

 0.8 V – 1.8 V

TPS628438

 1.8 V – 3.6 V

TPS628436

 0.4 V – 0.8 V DRL (SOT563, 6)(2) 1.6 mm × 1.6 mm × 0.6 mm

TPS628437

 0.8 V – 1.8 V

TPS628438

 1.8 V – 3.6 V
(1) For all available packages, see the orderable addendum at the end of the data sheet.
(2) Advance Information (not Production Data).
GUID-20201214-CA0I-5P5L-TDSS-QH9RHQZKZV7Q-low.svgTypical Application
GUID-20210923-SS0I-XPF3-1GJF-5TKSNSWSWGBF-low.svgEfficiency vs Output Current at 3.6 VIN