TPS62401

ACTIVE

Dual, 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) 1.1 Vout (Max) (V) 1.575 Iout (Max) (A) 0.4 Iq (Typ) (mA) 0.032 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 x 3 VSON (DRC) 10 9 mm² 3.00 x 3.00 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

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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 notes 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 notes Performing Accurate PFM Mode Efficiency Measurements (Rev. A) Dec. 11, 2018
Application notes QFN and SON PCB Attachment (Rev. B) Aug. 24, 2018
Application notes Understanding 100% mode in low-power DC/DC converters Jun. 22, 2018
Application notes Optimizing Transient Response of Internally Compensated DC-DC Converters (Rev. B) Nov. 29, 2017
Application notes Achieving a clean startup by using a DC/DC converter with a precise enable-pin t Oct. 24, 2017
Application notes Testing tips for applying external power to supply outputs without an input volt Oct. 24, 2016
Application notes Basic Calculation of a Buck Converter's Power Stage (Rev. B) Aug. 17, 2015
Application notes Five steps to a great PCB layout for a step-down converter Jan. 29, 2015
User guides TPS624xxEVM-167 User Guide (Rev. A) Nov. 02, 2013
Application notes Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) Jan. 13, 2012
Application notes IQ: What it is, what it isn’t, and how to use it Jun. 17, 2011
More literature TPS62401_NanoEVM_ Schematic Feb. 13, 2007
More literature BQ24070_NanoEVM_OV Jan. 29, 2007
More literature TPS62401_NanoEVM_OV Jan. 29, 2007

Design & development

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

Hardware development

EVALUATION BOARDS Download
TPS62401 Evaluation Module
TPS62401EVM-167
document-generic User guide
$49.00
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 BOARDS Download
TPS62420 Evaluation Module
TPS62420EVM-167
document-generic User guide
$49.00
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 MODELS Download
SLVMBB9A.ZIP (109 KB) - PSpice Model
GERBER FILES Download
SLVC132.ZIP (101 KB)

CAD/CAE symbols

Package Pins Download
VSON (DRC) 10 View options

Ordering & quality

Support & training

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