SLVSC95 April 2017 TPS561201 , TPS561208

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1Adaptive On-Time Control and PWM Operation
      2. 7.3.2Pulse Skip Control (TPS561201)
      3. 7.3.3Soft Start and Pre-Biased Soft Start
      4. 7.3.4 Current Protection
      5. 7.3.5Undervoltage Lockout (UVLO) Protection
      6. 7.3.6Thermal Shutdown
    4. 7.4Device Functional Modes
      1. 7.4.1Normal Operation
      2. 7.4.2Eco-mode Operation
      3. 7.4.3Standby Operation
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
        1. 8.2.2.1Custom Design With WEBENCH® Tools
        2. 8.2.2.2Output Voltage Resistors Selection
        3. 8.2.2.3Output Filter Selection
        4. 8.2.2.4Input Capacitor Selection
        5. 8.2.2.5 Bootstrap Capacitor Selection
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Related Links
    2. 11.2Community Resources
    3. 11.3Trademarks
    4. 11.4Electrostatic Discharge Caution
    5. 11.5Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Features

  • TPS561201 and TPS561208 1-A Converter Integrated 140-mΩ and 84-mΩ FETs
  • D-CAP2™ Mode Control With Fast Transient Response
  • Input Voltage Range: 4.5 V to 17 V
  • Output Voltage Range: 0.76 V to 7 V
  • Pulse-Skip Mode (TPS561201) or Continuous Current Mode (TPS561208)
  • 580-kHz Switching Frequency
  • Low Shutdown Current Less than 10 µA
  • 2% Feedback Voltage Accuracy (25°C)
  • Startup from Pre-Biased Output Voltage
  • Cycle-by-Cycle Overcurrent Limit
  • Hiccup-Mode Overcurrent Protection
  • Non-Latch UVP and TSD Protections
  • Fixed Soft-Start: 1.0 ms
  • Create a Custom Design Using the TPS56120x With the WEBENCH® Power Designer

Applications

  • Digital TV Power Supply
  • High Definition Blu-ray™ Disc Players
  • Networking Home Terminal
  • Digital Set-Top Box (STB)
  • Surveillance

Description

The TPS561201 and TPS561208 are simple, easy-to-use, 1-A synchronous step-down converters in SOT-23 package.

The devices are optimized to operate with minimum external component counts and also optimized to achieve low standby current.

These switch mode power supply (SMPS) devices employ D-CAP2 mode control providing a fast transient response and supporting both low equivalent series resistance (ESR) output capacitors such as specialty polymer and ultra-low ESR ceramic capacitors with no external compensation components.

The TPS561201 operates in pulse skip mode, which maintains high efficiency during light load operation. The TPS561201 and TPS561208 are available in a 6-pin 1.6 × 2.9 (mm) SOT (DDC) package and specified from –40°C to 125°C of junction temperature.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
TPS561201
TPS561208
SOT (6)1.60 mm × 2.90 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

Simplified Schematic

TPS561201 TPS561208 FP_simpl_schem_slvsc95.gif

TPS561201 Efficiency

TPS561201 TPS561208 D001_SLVSC95.gif