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TPS561243

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4.2V to 17V input voltage, 1A, 1.2MHz synchronous buck converter in SOT563 with Eco-mode

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Data sheet

TPS561243

ACTIVE
Data sheet Order now

Product details

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.2 Vin (max) (V) 17 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Enable, Light Load Efficiency, Over Current Protection, Soft Start Fixed, Synchronous Rectification Control mode D-CAP3 Vout (min) (V) 0.6 Vout (max) (V) 7 Iq (typ) (µA) 110 Duty cycle (max) (%) 95
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Buck Type Converter Iout (max) (A) 1 Vin (min) (V) 4.2 Vin (max) (V) 17 Switching frequency (min) (kHz) 1200 Switching frequency (max) (kHz) 1200 Features Enable, Light Load Efficiency, Over Current Protection, Soft Start Fixed, Synchronous Rectification Control mode D-CAP3 Vout (min) (V) 0.6 Vout (max) (V) 7 Iq (typ) (µA) 110 Duty cycle (max) (%) 95
SOT-5X3 (DRL) 6 2.56 mm² 1.6 x 1.6
  • Configured for a wide range of applications
    • Input voltage range: 4.2V to 17V
    • Output voltage range: 0.6V to 7V
    • Reference voltage: 0.6V
    • ±1.5% reference voltage accuracy
    • Integrated FETs: 100mΩ and 55mΩ
    • Low quiescent current for TPS561243: 110µA
    • Switching frequency: 1280kHz
    • Maximum 95% large duty cycle operation
    • Fixed soft-start time: 1.4ms
  • Easy of use and small design size
    • TPS561243 Eco-mode and TPS561246 FCCM mode at light load
    • D-CAP3™ control mode with fast transient response
    • Support start-up with prebiased output
    • Non-latch for OT and UVLO protection
    • Cycle-by-cycle over current limit
    • Hiccup mode for UV protection
    • Operating junction temperature range: –40°C to 125°C
    • SOT563 package: 1.6mm × 1.6mm
  • Create a custom design using the TPS56124x with the WEBENCH® Power Designer
  • Configured for a wide range of applications
    • Input voltage range: 4.2V to 17V
    • Output voltage range: 0.6V to 7V
    • Reference voltage: 0.6V
    • ±1.5% reference voltage accuracy
    • Integrated FETs: 100mΩ and 55mΩ
    • Low quiescent current for TPS561243: 110µA
    • Switching frequency: 1280kHz
    • Maximum 95% large duty cycle operation
    • Fixed soft-start time: 1.4ms
  • Easy of use and small design size
    • TPS561243 Eco-mode and TPS561246 FCCM mode at light load
    • D-CAP3™ control mode with fast transient response
    • Support start-up with prebiased output
    • Non-latch for OT and UVLO protection
    • Cycle-by-cycle over current limit
    • Hiccup mode for UV protection
    • Operating junction temperature range: –40°C to 125°C
    • SOT563 package: 1.6mm × 1.6mm
  • Create a custom design using the TPS56124x with the WEBENCH® Power Designer

The TPS56124x is a simple, easy-to-use, synchronous buck converter with input voltage ranging from 4.2V to 17V and supports up to 1A continuous current.

The device is designed to operate with minimum external component counts and low standby current.

This switch mode power supply (SMPS) device employs D-CAP3 control mode 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 TPS561243 operates in Eco-mode, which maintains high efficiency during light load operation. The TPS561246 operates in FCCM mode, which keeps the same frequency and lower output ripple during all load conditions. The TPS56124x integrates complete protection including OCP, UVLO, OTP, and UVP with hiccup.

The TPS56124x is available in a 6pin, 1.6mm × 1.6mm SOT563 (DRL) package. The junction temperature is specified from –40°C to 125°C.

The TPS56124x is a simple, easy-to-use, synchronous buck converter with input voltage ranging from 4.2V to 17V and supports up to 1A continuous current.

The device is designed to operate with minimum external component counts and low standby current.

This switch mode power supply (SMPS) device employs D-CAP3 control mode 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 TPS561243 operates in Eco-mode, which maintains high efficiency during light load operation. The TPS561246 operates in FCCM mode, which keeps the same frequency and lower output ripple during all load conditions. The TPS56124x integrates complete protection including OCP, UVLO, OTP, and UVP with hiccup.

The TPS56124x is available in a 6pin, 1.6mm × 1.6mm SOT563 (DRL) package. The junction temperature is specified from –40°C to 125°C.
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Technical documentation

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* Data sheet TPS56124x 4.2V to 17V Input, 1 A, Synchronous Buck Converter in SOT563 datasheet (Rev. A) PDF | HTML 27 Jun 2024
Application note How to Co-Layout Three Common SOT-563 Package Pinouts (Rev. B) PDF | HTML 27 Aug 2024
Application note How to do Co-Layout Between SOT-563 Package and SOT-236 Package (Rev. A) PDF | HTML 10 Jul 2023

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Evaluation board

TPS562243EVM — TPS562243 evaluation module

TPS562243 evaluation module (EVM) is a simple, easy-to-use, 2A synchronous step-down converter in SOT563 package. TPS562243EVM is a fully assembled and tested circuit for evaluating the TPS562243 step-down converter. TPS562243EVM operates from 4.2V to 17V input, 12V nominal and provides a 1.05V (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS562246EVM — TPS562246 evaluation module

TPS562246 evaluation module (EVM) is a simple, easy-to-use, 2A synchronous step-down converter in SOT563 package. TPS562246EVM is a fully assembled and tested circuit for evaluating the TPS562243 step-down converter. TPS562246EVM operates from 4.2V to 17V input, 12V nominal, and provides a 1.05V (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

TPS561243 and TPS562243 PSpice Transient Model

SLUM902.ZIP (272 KB) - PSpice Model
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SOT-5X3 (DRL) 6 Ultra Librarian
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