SLUSEF1B September   2021  – November 2022 TPSM82864A , TPSM82866A

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Options
  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 Power Save Mode
      2. 8.3.2 Forced PWM Mode
      3. 8.3.3 Optimized Transient Performance from PWM to PSM Operation
      4. 8.3.4 Low Dropout Operation (100% Duty Cycle)
      5. 8.3.5 Soft Start
      6. 8.3.6 Switch Current Limit and HICCUP Short-Circuit Protection
      7. 8.3.7 Undervoltage Lockout
      8. 8.3.8 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Enable and Disable (EN)
      2. 8.4.2 Output Discharge
      3. 8.4.3 Power Good (PG)
      4. 8.4.4 Output Voltage and Mode Selection (VSET/MODE)
  9. 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
        1. 9.2.2.1 Setting The Output Voltage
        2. 9.2.2.2 Input and Output Capacitor Selection
      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
        1. 9.4.2.1 Thermal Considerations
  10. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Third-Party Products Disclaimer
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  11. 11Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Description

The TPSM8286xA device family consists of 4-A and 6-A step-down converter power modules optimized for small solution size and high efficiency. The power modules integrate a synchronous step-down converter and an inductor to simplify design, reduce external components, and save PCB area. The low-profile and compact solution is suitable for automated assembly by standard surface mount equipment.

Tight output voltage accuracy, even with small output capacitors, is achieved though the DCS-Control architecture and its excellent load transient performance. At medium-to-heavy loads, the converter operates in PWM mode and automatically enters Power save mode operation at light load to maintain high efficiency over the entire load current range. The devices can also be forced in PWM mode operation for the smallest output voltage ripple.

The EN and PG pins, which support sequencing configurations, bring a flexible system design. An integrated soft start reduces the inrush current required from the input supply. Overtemperature protection and hiccup short-circuit protection deliver a robust and reliable solution.

Device Information
PART NUMBER

OUTPUT CURRENT

PACKAGE(1)BODY SIZE (NOM)
TPSM82864A

4 A

RDJ or RDM

(B0QFN, 23)		3.50 mm × 4.00 mm
TPSM82866A

6 A

(1) For all available packages, see the orderable addendum at the end of the data sheet.
Typical Application Schematic – Fixed Output Voltage Option
TPSM82866AA0HRDMR – Efficiency Versus Output Current; VIN = 5.0 V