TPS62291

ACTIVE

2.25MHz 1A Step-Down Converter in 2x2mm SON Package

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TPS628511 ACTIVE 2.7-V to 6-V, 1-A, fixed-frequency, step-down converter in SOT583 package Smaller SOT583 package, pin-to-pin compatible family 0.5 A, 1 A, 2 A

Product details

Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 2.3 Vin (max) (V) 6 Switching frequency (min) (kHz) 2000 Switching frequency (max) (kHz) 2500 Features Enable, Forced PWM, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 3.3 Iq (typ) (µA) 15 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 85 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 2.3 Vin (max) (V) 6 Switching frequency (min) (kHz) 2000 Switching frequency (max) (kHz) 2500 Features Enable, Forced PWM, Light load efficiency, Synchronous Rectification Control mode Voltage mode Vout (min) (V) 3.3 Vout (max) (V) 3.3 Iq (typ) (µA) 15 Duty cycle (max) (%) 100
WSON (DRV) 6 4 mm² 2 x 2
  • High Efficiency - up to 96%
  • Output Current up to 1000 mA
  • VIN Range From 2.3 V to 6.0V 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%
  • Fixed Output Voltage Options
  • Typical 15-µA Quiescent Current
  • 100% Duty Cycle for Lowest Dropout
  • Voltage Positioning at Light Loads
  • Available in a 2-mm × 2-mm × 0.8-mm WSON (6) Package (DRV)
  • High Efficiency - up to 96%
  • Output Current up to 1000 mA
  • VIN Range From 2.3 V to 6.0V 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%
  • Fixed Output Voltage Options
  • Typical 15-µA Quiescent Current
  • 100% Duty Cycle for Lowest Dropout
  • Voltage Positioning at Light Loads
  • Available in a 2-mm × 2-mm × 0.8-mm WSON (6) Package (DRV)

The TPS6229x devices are highly efficient synchronous step down DC/DC converters optimized for battery powered portable applications. They provide up to 1000-mA output current from a single Li-ion cell.

With an input voltage range of 2.3 V to 6.0 V, the devices support batteries with extended voltage range and are ideal to power portable applications like mobile phones and other portable equipment.

The TPS6229x devices operate at 2.25-MHz fixed switching frequency and enter 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 devices 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 TPS6229x devices allow the use of small inductors and capacitors to achieve a small solution size.

The TPS6229x devices operate over a free air temperature range of –40°C to 85°C. The devices are available in a 2-mm × 2-mm 6-pin WSON package (DRV).

The TPS6229x devices are highly efficient synchronous step down DC/DC converters optimized for battery powered portable applications. They provide up to 1000-mA output current from a single Li-ion cell.

With an input voltage range of 2.3 V to 6.0 V, the devices support batteries with extended voltage range and are ideal to power portable applications like mobile phones and other portable equipment.

The TPS6229x devices operate at 2.25-MHz fixed switching frequency and enter 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 devices 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 TPS6229x devices allow the use of small inductors and capacitors to achieve a small solution size.

The TPS6229x devices operate over a free air temperature range of –40°C to 85°C. The devices are available in a 2-mm × 2-mm 6-pin WSON package (DRV).

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Technical documentation

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Type Title Date
* Data sheet TPS6229x 1-A Step Down Converter in 2 x 2 DRV Package datasheet (Rev. G) PDF | HTML 11 Apr 2018
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 Dec 2023
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 24 Oct 2017
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) 15 Jun 2017
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 24 Oct 2016
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) 17 Aug 2015
Analog Design Journal Five steps to a great PCB layout for a step-down converter 29 Jan 2015
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 13 Jan 2012
Analog Design Journal IQ: What it is, what it isn’t, and how to use it 17 Jun 2011

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

TPS62291 TINA-TI Transient Reference Design

SLVM247.TSC (829 KB) - TINA-TI Reference Design
Simulation model

TPS62291 TINA-TI Transient Spice Model

SLVM248.ZIP (36 KB) - TINA-TI Spice Model
Simulation model

TPS62291 Unencrypted PSpice Transient Model Package (Rev. A)

SLIM055A.ZIP (36 KB) - PSpice Model
Package Pins CAD symbols, footprints & 3D models
WSON (DRV) 6 Ultra Librarian

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