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  • TPS6226x 2.25-MHz 600-mA Step Down Converter in 2 x 2 WSON and SOT Package

    • SLVS763E June   2007  – July 2015 TPS62260 , TPS62261 , TPS62262 , TPS62263

      PRODUCTION DATA.  

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  • TPS6226x 2.25-MHz 600-mA Step Down Converter in 2 x 2 WSON and SOT Package
  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Device Comparison Table
  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 Dynamic Voltage Positioning
      2. 8.3.2 Undervoltage Lockout
      3. 8.3.3 Mode Selection
      4. 8.3.4 Enable
      5. 8.3.5 Thermal Shutdown
    4. 8.4 Device Functional Modes
      1. 8.4.1 Soft-Start
      2. 8.4.2 Power Save Mode
      3. 8.4.3 100% Duty Cycle Low Dropout Operation
      4. 8.4.4 Short-Circuit Protection
  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 Output Voltage Setting
        2. 9.2.2.2 Output Filter Design (Inductor and Output Capacitor)
          1. 9.2.2.2.1 Inductor Selection
          2. 9.2.2.2.2 Output Capacitor Selection
          3. 9.2.2.2.3 Input Capacitor Selection
      3. 9.2.3 Application Curves
    3. 9.3 System Examples
      1. 9.3.1 TPS62260, Adjustable 1.5-V Output
      2. 9.3.2 TPS62262, Fixed 1.2-V Output
      3. 9.3.3 TPS62261, Fixed 1.8-V Output
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Examples
  12. 12Device and Documentation Support
    1. 12.1 Device Support
      1. 12.1.1 Third-Party Products Disclaimer
    2. 12.2 Related Links
    3. 12.3 Community Resources
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 Glossary
  13. 13Mechanical, Packaging, and Orderable Information
  14. IMPORTANT NOTICE

Package Options

Mechanical Data (Package|Pins)
  • DDC|5
    • MPDS123G
  • DRV|6
    • MPDS216E
Thermal pad, mechanical data (Package|Pins)
  • DRV|6
    • QFND087M
Orderable Information
  • slvs763e_oa
  • slvs763e_pm
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DATA SHEET

TPS6226x 2.25-MHz 600-mA Step Down Converter in 2 x 2 WSON and SOT Package

1 Features

  • High Efficiency Step-Down Converter
  • Output Current up to 600 mA
  • VIN Range from 2 V to 6 V for Li-ion Batteries with Extended Voltage Range
  • 2.25-MHz Fixed Frequency Operation
  • Power Save Mode at Light Load Currents
  • Output Voltage Accuracy in PWM Mode ±1.5%
  • Typical 15-μA Quiescent Current
  • 100% Duty Cycle for Lowest Dropout
  • Voltage Positioning at Light Loads
  • Available in a SOT (5) and 2-mm × 2-mm × 0.8-mm WSON (6) Package
  • Allows <1-mm Solution Height

2 Applications

  • Mobile Phones, Smart Phones
  • Low Power DSP Supply
  • Portable Media Players
  • Point-of-Load (POL) Applications

3 Description

The TPS6226x device is a highly efficient synchronous step-down DC/DC converter. The TPS6226x provides up to 600-mA output current from a single Li-Ion cell, and is ideal for battery-powered applications such as mobile phones and other portable equipment.

With an wide input voltage range of 2 V to 6 V, the device also supports two- and three-cell alkaline batteries, 3.3-V and 5-V input voltage rails.

The TPS6226x operates at 2.25-MHz fixed-switching frequency, and enters power save mode operation at light load currents to maintain high efficiency over the entire load current range.

The power save mode is optimized for low-output voltage ripple. For low noise applications, the device can be forced into fixed frequency pulse-width modulation (PWM) mode by pulling the MODE pin high. In the shutdown mode, the current consumption is reduced to less than 1 μA. The TPS6226x allows the use of small inductors and capacitors to achieve a small solution size.

The TPS6226x operates over a free air temperature range of –40°C to 85°C. It is available in a 5-pin SOT and a 6-pin 2-mm × 2-mm WSON package.

Device Information(1)

PART NUMBER PACKAGE BODY SIZE (NOM)
TPS62260 WSON (6) 2.00 mm × 2.00 mm
SOT (5) 2.90 mm × 1.60 mm
TPS62261 WSON (6) 2.00 mm × 2.00 mm
TPS62262 WSON (6) 2.00 mm × 2.00 mm
SOT (5) 2.90 mm × 1.60 mm
TPS62263 WSON (6) 2.00 mm × 2.00 mm
  1. For all available packages, see the orderable addendum at the end of the data sheet.

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Typical Application Schematic

TPS62260 TPS62261 TPS62262 TPS62263 typ_sch_lvs763.gif

Efficiency vs Output Current

TPS62260 TPS62261 TPS62262 TPS62263 fpage_effcy_lvs763.gif

4 Revision History

Changes from D Revision (February 2011) to E Revision

  • Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section Go

5 Device Comparison Table

PART NUMBER OUTPUT VOLTAGE(1) PACKAGE(2) PACKAGE DESIGNATOR MODE PIN PACKAGE MARKING
TPS62260 Adjustable WSON (6) DRV Yes BYK
SOT (5) DDC No, PFM/PWM auto transition BYP
TPS62261 1.8 V fixed WSON (6) DRV Yes BYL
TPS62262 1.2 V fixed WSON (6) DRV Yes BYM
SOT (5) DDC No, PFM/PWM auto transition QXS
TPS62263 2.5 V fixed WSON (6) DRV Yes CFX
(1) Contact TI for other fixed output voltage options
(2) For the most current package and ordering information, see Mechanical, Packaging, and Orderable Information, or see the TI website at www.ti.com.

6 Pin Configuration and Functions

DDC Package
5-Pin SOT
Top View
TPS62260 TPS62261 TPS62262 TPS62263 po1_lvs763_1.gif
DRV Package
6-Pin WSON
Top View
TPS62260 TPS62261 TPS62262 TPS62263 po1_lvs763_2.gif

Pin Functions

PIN I/O DESCRIPTION
NAME WSON SOT
EN 4 3 IN This is the enable pin of the device. Pulling this pin to low forces the device into shutdown mode. Pulling this pin to high enables the device. This pin must be terminated.
FB 3 4 IN Feedback pin for the internal regulation loop. Connect the external resistor divider to this pin. In case of fixed output voltage option, connect this pin directly to the output capacitor
GND 6 2 PWR GND supply pin.
MODE 2 — IN This pin is only available at WSON package option. MODE pin = High forces the device to operate in fixed frequency PWM mode. MODE pin = Low enables the power save mode with automatic transition from PFM mode to fixed frequency PWM mode.
SW 1 5 OUT This is the switch pin and is connected to the internal MOSFET switches. Connect the external inductor between this terminal and the output capacitor.
VIN 5 1 PWR VIN power supply pin.

 
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