SLVSFS7A March   2021  – January 2024 TPS62901

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Mode Selection and Device Configuration MODE/S-CONF
      2. 6.3.2 Adjustable VO Operation (External Voltage Divider)
      3. 6.3.3 Setable VO Operation (VSET and Internal Voltage Divider)
      4. 6.3.4 Soft Start / Tracking (SS/TR)
      5. 6.3.5 Smart Enable with Precise Threshold
      6. 6.3.6 Power Good (PG)
      7. 6.3.7 Undervoltage Lockout (UVLO)
      8. 6.3.8 Current Limit And Short-Circuit Protection
      9. 6.3.9 Thermal Shutdown
    4. 6.4 Device Functional Modes
      1. 6.4.1 Pulse Width Modulation (PWM) Operation
      2. 6.4.2 AEE (Automatic Efficiency Enhancement)
      3. 6.4.3 Power Save Mode Operation (Auto PFM/PWM)
      4. 6.4.4 100% Duty-Cycle Operation
      5. 6.4.5 Output Discharge Function
      6. 6.4.6 Starting into a Prebiased Load
  8. 7 Application and Implementation
    1. 7.1 Application Information
    2. 7.2 Typical Application with Adjustable Output Voltage
      1. 7.2.1 Design Requirements
      2. 7.2.2 Detailed Design Procedure
        1. 7.2.2.1 Custom Design With WEBENCH® Tools
        2. 7.2.2.2 Programming the Output Voltage
        3. 7.2.2.3 External Component Selection
        4. 7.2.2.4 Inductor Selection
        5. 7.2.2.5 Capacitor Selection
          1. 7.2.2.5.1 Output Capacitor
          2. 7.2.2.5.2 Input Capacitor
          3. 7.2.2.5.3 Soft-Start Capacitor
        6. 7.2.2.6 Tracking Function
        7. 7.2.2.7 Output Filter and Loop Stability
      3. 7.2.3 Application Curves
      4. 7.2.4 Typical Application with Setable VO using VSET
        1. 7.2.4.1 Design Requirements
        2. 7.2.4.2 Detailed Design Procedure
        3. 7.2.4.3 Application Curves
    3. 7.3 System Examples
      1. 7.3.1 LED Power Supply
      2. 7.3.2 Powering Multiple Loads
      3. 7.3.3 Voltage Tracking
    4. 7.4 Power Supply Recommendations
    5. 7.5 Layout
      1. 7.5.1 Layout Guidelines
      2. 7.5.2 Layout Example
        1. 7.5.2.1 Thermal Considerations
  9. 8 Device and Documentation Support
    1. 8.1 Device Support
      1. 8.1.1 Development Support
        1. 8.1.1.1 Custom Design With WEBENCH® Tools
    2. 8.2 Receiving Notification of Documentation Updates
    3. 8.3 Support Resources
    4. 8.4 Trademarks
    5. 8.5 Electrostatic Discharge Caution
    6. 8.6 Glossary
  10. 9 Revision History
  11. 10Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
  • RPJ|9
Thermal pad, mechanical data (Package|Pins)
Orderable Information

3 Description

The TPS62901 is a highly-efficient, small, and flexible synchronous step-down DC-DC converter that is easy to use. A selectable switching frequency of 2.5MHz or 1.0MHz allows the use of small inductors and provides fast transient response. The device supports high VOUT accuracy of ±1% with the DCS-Control topology. The wide input voltage range of 3V to 17V supports a variety of nominal inputs like 12V supply rails, single-cell or multi-cell Li-Ion, and 5V or 3.3V rails.

The TPS62901 can automatically enter power save mode (if auto PFM/PWM is selected) at light loads to maintain high efficiency. Additionally, to provide high efficiency at very small loads, the device has a low typical quiescent current of 4µA. AEE, if enabled, provides high efficiency across VIN, VOUT, and load current. The device includes a MODE/S-CONF input to set the internal and external divider, switching frequency, output voltage discharge, and automatic power save mode or forced PWM operation.

The device is available in small 9-pin VQFN package measuring 1.50mm × 2.00mm with 0.5mm pitch.

Package Information
PART NUMBERPACKAGE(1)PACKAGE SIZE2 (2)
TPS62901 RPJ (VQFN-HR, 9) 1.50mm × 2.00mm
(1) For all available packages, see Section 10.
(2) The package size (length × width) is a nominal value and includes pins, where applicable.
GUID-FCAE8DB8-8C88-4A88-A198-0C91B3D8DC70-low.gifSimplified Schematic
GUID-20201201-CA0I-6DHM-KWMB-MS9RQ9XQVV8L-low.gifEfficiency Versus Output Current (1.2VO at 2.5MHz-1μH, Auto PFM/PWM)