TPS62400

ACTIVE

Dual, Adjustable, 400mA and 600mA, 2.25MHz Step-Down Converter with 1-Wire Interface in QFN

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Product details

Parameters

Vin (Min) (V) 2.5 Vin (Max) (V) 6 Vout (Min) (V) 0.6 Vout (Max) (V) 6 Iout (Max) (A) 0.4 Iq (Typ) (uA) 32 Switching frequency (Min) (kHz) 2000 Switching frequency (Max) (kHz) 2500 Features Enable, Forced PWM, Light Load Efficiency, Synchronous Rectification, Adaptive/Dynamic Voltage Scaling Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 2 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

VSON (DRC) 10 9 mm² 3.00 x 3.00 VSON (DRC) 10 9 mm² 3 x 3 open-in-new Find other Buck converters (integrated switch)

Features

  • High Efficiency—Up to 95%
  • VIN Range From 2.5 V to 6 V
  • 2.25-MHz Fixed Frequency Operation
  • Output Current of 400 mA and 600 mA
  • Adjustable Output Voltage From 0.6V to VIN
  • Pin-Selectable Output Voltage Supports Simple
    Dynamic Voltage Scaling
  • EasyScale Optional One-Pin Serial Interface
  • Power Save Mode at Light Load Currents
  • 180° Out-of-Phase Operation
  • Output Voltage Accuracy in PWM Mode ±1%
  • Typical 32-µA Quiescent Current for Both
    Converters
  • 100% Duty Cycle for Lowest Dropout
  • Available in a 10-Pin VSON (3 mm × 3 mm)
  • APPLICATIONS
    • Cell Phones, Smart Phones
    • PDAs, Pocket PCs
    • OMAP and Low-Power DSP Supply
    • Portable Media Players
    • Digital Radios
    • Digital Cameras

All other trademarks are the property of their respective owners

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Description

The TPS6240x family of devices are synchronous dual step-down DC-DC converters optimized for battery-powered portable applications. The devices provide two independent output voltage rails powered by 1-cell Li-Ion or 3-cell NiMH/NiCD batteries. The devices are also suitable to operate from a standard 3.3-V or 5-V voltage rail.

With an input voltage range from 2.5 V to 6 V, the TPS62400 is ideal to power portable applications like smart phones, PDAs, and other portable equipment.

With the EasyScale serial interface the output voltages can be modified during operation. The fixed output voltage versions TPS62401, TPS62402, TPS62403, and TPS62404 support one-pin controlled simple Dynamic Voltage Scaling for low-power processors.

The TPS6240x operates at a 2.25-MHz fixed switching frequency and enters the power save mode operation at light load currents to maintain high efficiency over the entire load current range. For low noise applications the devices can be forced into fixed frequency PWM mode by pulling the MODE/DATA pin high. In the shutdown mode, the current consumption is reduced to 1.2 µA, typical. The devices allow the use of small inductors and capacitors to achieve a small solution size.

The TPS62400 is available in a 10-pin leadless package (3-mm × 3-mm VSON)

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS6240x 2.25-MHz 400-mA and 600-mA Dual Step-Down Converter In Small 3-mm x 3-mm VSON Package datasheet (Rev. F) Jul. 30, 2014
Application note Methods of output-voltage adjustment for DC/DC converters Jun. 14, 2019
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application note QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application note Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Application note A Topical Index of TI Low Power Buck DC/DC Application Notes Jan. 17, 2018
Application note Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) Nov. 29, 2017
Application note Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
Application note Extending the Soft Start Time Without a Soft Start Pin (Rev. B) Jun. 15, 2017
Application note Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
Application note Basic Calculation of a Buck Converter's Power Stage (Rev. B) Aug. 17, 2015
Application note Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
User guide TPS624xxEVM-167 User Guide (Rev. A) Nov. 02, 2013
Technical articles The Internet of Pets Aug. 20, 2013
Application note Design considerations for a resistive feedback divider in a DC/DC converter Apr. 26, 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan. 13, 2012
Application note IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011
Application note Output Voltage Selection for the TPS62400 Family of Buck Converters Sep. 20, 2006

Design & development

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

Hardware development

EVALUATION BOARD Download
TPS62401 Evaluation Module
TPS62401EVM-167
49
Description

The TPS62401EVM-167 is an evaluation tool for the TPS62401 which is a 2.25 MHz dual, step down converter in a small 3x3 mm2 QFN package. The TPS62401 has a 2.5 V to 6 V input voltage supply and offers fixed output voltages of 1.1 V/1.575 V at 400 mA and 1.8 V at (...)

Features
  • Efficiency: 95%
  • Vin Range: 2.5 V to 6 V
  • Output Current: 400 mA and 600 mA
  • Fixed output voltage of 1.1 V/1.575 V at 400mA and 1.8V at 600 mA
  • Available in 10-pin 3x3 QFN package
  • Power Save Mode at Light Load Currents
  • Typ. 32 uA Quiescent current for both converters
  • EasyScale one pin serial interface for dynamic (...)
EVALUATION BOARD Download
TPS62420 Evaluation Module
TPS62420EVM-167
49
Description

The TPS62420EVM-167 is an evaluation tool for the TPS62420 which is a 2.25 MHz dual, step down converter in a small 3x3 mm2 QFN package. The TPS62420 can supply voltages from 0.6 V to 6 V from a 2.5 V to 6 V input, and provides two output rails of up to 600 mA/1000 mA (...)

Features
  • Efficiency: 95%
  • Vin Range: 2.5 V to 6 V
  • Output Current: 600 mA and 1000 mA
  • Adjustable output voltage from 0.6 V to Vin
  • Available in 10-pin 3x3 QFN package
  • Power Save Mode at Light Load Currents
  • Typ. 32 uA Quiescent current for both converters
  • EasyScale one pin serial interface for dynamic output voltage (...)

Software development

SUPPORT SOFTWARE Download
SLVC538.ZIP (644 KB)

Design tools & simulation

SIMULATION MODEL Download
SLVM420A.ZIP (235 KB) - PSpice Model
SIMULATION MODEL Download
SLVMB30.TSC (952 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLVMB31.TSC (915 KB) - TINA-TI Reference Design
SIMULATION MODEL Download
SLVMB32.ZIP (169 KB) - TINA-TI Spice Model
SIMULATION MODEL Download
SLVMB33.ZIP (129 KB) - TINA-TI Spice Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SCHEMATIC Download
SLVR333B.PDF (304 KB)
GERBER FILE Download
SLVC132.ZIP (101 KB)
GERBER FILE Download
SLVC780.ZIP (138 KB)

CAD/CAE symbols

Package Pins Download
VSON (DRC) 10 View options

Ordering & quality

Information included:
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  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

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