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TPS62821

ACTIVE

2.4-V to 5.5-V input, 1-A step-down converter with 1% accuracy in 1.5-mm x 2-mm VSON-HR package

Product details

Vin (min) (V) 2.4 Vin (max) (V) 5.5 Vout (min) (V) 0.6 Vout (max) (V) 4 Iout (max) (A) 1 Iq (typ) (mA) 0.004 Switching frequency (min) (kHz) 2200 Switching frequency (max) (kHz) 2200 Features Enable, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO fixed Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode Constant on-time (COT), DCS-Control Duty cycle (max) (%) 100 Type Converter
Vin (min) (V) 2.4 Vin (max) (V) 5.5 Vout (min) (V) 0.6 Vout (max) (V) 4 Iout (max) (A) 1 Iq (typ) (mA) 0.004 Switching frequency (min) (kHz) 2200 Switching frequency (max) (kHz) 2200 Features Enable, Light load efficiency, Output discharge, Over Current Protection, Power good, Pre-Bias Start-Up, Soft Start Fixed, Synchronous Rectification, UVLO fixed Operating temperature range (°C) -40 to 125 Rating Catalog Regulated outputs (#) 1 Control mode Constant on-time (COT), DCS-Control Duty cycle (max) (%) 100 Type Converter
VSON-HR (DLC) 8 3 mm² 2 x 1.5
  • DCS-Control™ topology
  • 26-mΩ/25-mΩ internal power switches (TPS62823)
  • Up to 3-A output current (TPS62823)
  • Very low quiescent current of 4 µA
  • Switching frequency of typically 2.2 MHz
  • 1% feedback voltage accuracy (full temp. range)
  • Enable (EN) and power good (PG)
  • Adjustable output voltage from 0.6 V to 4 V
  • 100% duty-cycle mode
  • Internal soft-start circuitry
  • Seamless power save mode transition
  • Undervoltage lockout
  • Active output discharge
  • Cycle-by-cycle current limit
  • HICCUP short-circuit protection
  • Over temperature protection
  • CISPR11 class B compliant
  • Create a custom design using the TPS62822 with the WEBENCH® Power Designer
  • DCS-Control™ topology
  • 26-mΩ/25-mΩ internal power switches (TPS62823)
  • Up to 3-A output current (TPS62823)
  • Very low quiescent current of 4 µA
  • Switching frequency of typically 2.2 MHz
  • 1% feedback voltage accuracy (full temp. range)
  • Enable (EN) and power good (PG)
  • Adjustable output voltage from 0.6 V to 4 V
  • 100% duty-cycle mode
  • Internal soft-start circuitry
  • Seamless power save mode transition
  • Undervoltage lockout
  • Active output discharge
  • Cycle-by-cycle current limit
  • HICCUP short-circuit protection
  • Over temperature protection
  • CISPR11 class B compliant
  • Create a custom design using the TPS62822 with the WEBENCH® Power Designer

The TPS6282x is an all-purpose and easy to use synchronous step-down DC-DC converter with a very low quiescent current of only 4 µA. It supplies up to 3A output current (TPS62823) from a 2.4-V to 5.5-V input voltage. Based on the DCS-Control™ topology it provides a fast transient response.

The internal reference allows to regulate the output voltage down to 0.6 V with a high feedback voltage accuracy of 1% over the junction temperature range of -40°C to 125°C. The 1-A, 2-A, 3-A scalable pin-to-pin and BOM-to-BOM compatible device family can be used with small 470-nH inductors.

The TPS6282x include an automatically entered power save mode to maintain high efficiency down to very light loads.

The device features a Power Good signal and an internal soft start circuit. It is able to operate in 100% mode. For fault protection, it incorporates a HICCUP current limit as well as a thermal shutdown.

The TPS6282x are packaged in a 2 mm x 1.5 mm QFN-8 package.

The TPS6282x is an all-purpose and easy to use synchronous step-down DC-DC converter with a very low quiescent current of only 4 µA. It supplies up to 3A output current (TPS62823) from a 2.4-V to 5.5-V input voltage. Based on the DCS-Control™ topology it provides a fast transient response.

The internal reference allows to regulate the output voltage down to 0.6 V with a high feedback voltage accuracy of 1% over the junction temperature range of -40°C to 125°C. The 1-A, 2-A, 3-A scalable pin-to-pin and BOM-to-BOM compatible device family can be used with small 470-nH inductors.

The TPS6282x include an automatically entered power save mode to maintain high efficiency down to very light loads.

The device features a Power Good signal and an internal soft start circuit. It is able to operate in 100% mode. For fault protection, it incorporates a HICCUP current limit as well as a thermal shutdown.

The TPS6282x are packaged in a 2 mm x 1.5 mm QFN-8 package.

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TPS62824 ACTIVE 2.4-V to 5.5-V input, 1-A step-down converter with 1% accuracy in 1.5-mm x 1.5-mm QFN 1-A DC/DC converter with 1% accuracy in a smaller 6-pin QFN package

Technical documentation

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Type Title Date
* Data sheet TPS6282x 5.5-V, 1-A, 2-A, 3-A Step-Down Converter Family with 1% Accuracy datasheet (Rev. C) PDF | HTML 25 Nov 2019
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML 06 Dec 2023
Application note Quick Reference Guide To TI Buck Switching DC/DC Application Notes (Rev. B) PDF | HTML 23 May 2022
Application note Step-Dwn (Buck) Convrtr Pwer Solutions for Programmable Logic Controller Systems (Rev. A) PDF | HTML 26 Jul 2021
Selection guide Buck Converter Quick Reference Guide (Rev. B) 08 Apr 2021
White paper Enabling Higher Data Rates for Optical Modules With Small and Efficient Power 22 Mar 2021
Analog Design Journal Methods of output-voltage adjustment for DC/DC converters 14 Jun 2019
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 11 Dec 2018
Technical article QFN soldering tips and tricks PDF | HTML 26 Nov 2018
Application note Solve Point-of-Load Power Design Challenges: Single Board Computer Applications 24 Aug 2018
Analog Design Journal Understanding 100% mode in low-power DC/DC converters 22 Jun 2018
Technical article Output accuracy varies with temperature – 1% is not always 1% PDF | HTML 02 May 2018
EVM User's guide TPS6282xEVM-005 Evaluation Module 03 Nov 2017
Analog Design Journal Achieving a clean startup by using a DC/DC converter with a precise enable-pin threshold 24 Oct 2017
Analog Design Journal Testing tips for applying external power to supply outputs without an input voltage 24 Oct 2016
Analog Design Journal Understanding frequency variation in the DCS-Control(TM) topology 30 Oct 2015
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
Analog Design Journal Accurately measuring efficiency of ultralow-IQ devices 22 Jan 2014
Analog Design Journal High-efficiency, low-ripple DCS-Control offers seamless PWM/pwr-save transitions 25 Jul 2013
Analog Design Journal Design considerations for a resistive feedback divider in a DC/DC converter 26 Apr 2012
Application note Understanding the Absolute Maximum Ratings of the SW Node (Rev. A) 13 Jan 2012
Application note Choosing an Appropriate Pull-up/Pull-down Resistor for Open Drain Outputs 19 Sep 2011
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.

Evaluation board

TPS62821EVM-005 — TPS62821 1A Step-Down Converter With DCS-Control™ Evaluation Module

The TPS62821EVM-005 evaluation module (EVM) is designed to help the user easily evaluate and test the operation and functionality of the TPS62821 DCS-Control step-down buck converter. The EVM converts a 2.4-V to 5.5-V input voltage to a 1% accuracy regulated output voltage of 1.8 V at up to 1-A (...)

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

TPS62821 PSpice Unencrypted Transient Model (Rev. B)

SLVMCA8B.ZIP (950 KB) - PSpice Model
Calculation tool

SLVC780 Design Tool for Output Voltage Adjustment Using a DAC

Supported products & hardware

Supported products & hardware

Products
Buck converters (integrated switch)
TLV62065 3MHz 2A Step Down Converter in 2x2 SON Package TLV62080 1.2A High Efficient Step Down Converter in 2x2mm SON Package TLV62084 2A High Efficient Step Down Converter in 2x2mm SON Package TLV62084A 2A High Efficient Step Down Converter in 2x2mm SON Package TLV62085 3-A High Efficiency Step-Down Converter in 2x2 QFN TLV62090 3A High Efficiency Step Down Converter in 3x3mm QFN Package TLV62095 4A Synchronous Step Down Converter with DCS Control TLV62130 3-17V 3A Step-Down Converter in 3x3 QFN Package TLV62130A 3-17V 3A Step-Down Converter with DCS-Control in 3x3 QFN Package TLV62150 4-17V 1A Step-Down Converter with DCS-Control™ TLV62150A 4-17V, 1A STEP-DOWN CONVERTER with DCS-Control in 3x3 QFN Package TLV62565 1.5A Buck Converter in SOT23 Package TLV62566 1.5A Buck Converter with Power Good, in SOT23 Package TLV62568 2.5V-5.5V input, 1A high efficiency step-down buck converter in SOT23 and SOT563 package TLV62568A 2.5V-5.5V input, 1A high efficiency step-down buck converter with forced PWM in small SOT563 package TLV62569 2.5V-5.5V input, 2-A high efficiency step-down buck converter in SOT23 and SOT563 package TLV62569A 2A High Efficiency Step-down Buck Converter with forced PWM in SOT Package TLV62585 2.5V-5.5V input, 3-A high efficiency step-down converter in 2x2 QFN or SOT563 package TPS62000 Adjustable, 600-mA, 95% Efficient Step-Down Converter TPS62000-HT High Temperature High-Efficiency Step-Down Low Power DC-DC Converter TPS62020 Adjustable, 600-mA, 95% Efficient Step-Down Converter, 18uA, MSOP-10 TPS62040 Adjustable, 1.2-A, 95% efficient step-down converter, 18 uA, MSOP-10 and QFN TPS62050 Adjustable, 800-mA, 10V Vin, 95% Efficient Step-Down Converter in MSOP-10 TPS62056 3.3-V Output, 800-mA, 10V Vin, 95% Efficient Step-Down Converter in MSOP-10 TPS62060 3MHz, 1.6A Step-Down Converter in 2x2 SON Package TPS62065 3MHz, 2A Step-Down Converter in 2x2 SON Package TPS62065-Q1 3MHz, 2A Automotive Step-Down Converter in 2x2 SON Package TPS62067 3MHz, 2A Step-Down Converter in 2x2 SON Package TPS62067-Q1 Automotive 3-MHz 2-A step-down converter in 2×2 SON package TPS62080 1.2A High Efficient Step Down Converter in 2x2mm SON Package, with Adjustable Vout TPS62080A 1.2A High Efficient Step Down Converter in 2x2mm SON Package TPS62085 3-A Step-Down Converter with DCS-Control and Hiccup Short Circuit Protection in 2x2 HotRod Package TPS62088 2.4-V to 5.5-V input, tiny 6-pin 3-A step-down converter in 1.2-mm x 0.8-mm WCSP TPS62090 3A, 6V input, up to 97% efficiency, Synchronous Step Down Converter with DCS™ Control TPS62090-Q1 Automotive: 3A, 2.5 to 6V input, up to 97% efficiency, 3x3 QFN, Step-Down Converter TPS62095 4A Synchronous Step Down Converter with DCS Control TPS62097 2-A Step Down Converter with Selectable Switching Frequency in HotRod package TPS62097-Q1 2A Automotive Step-Down Converter in 3x3 QFN With Wettable Flanks TPS62100 Multimode 300kHz Synchronous Buck Converter with Adjustable Output TPS62110 Adjustable, 1.5-A, 17-V Vin Step-Down Converter in QFN-16 TPS62110-EP Enhanced Product 17 V, 1.5 A Synchronous Step-Down Converter TPS62110-HT High Temperature 17-V, 1.5-A, Synchronous Step-Down Converter TPS62110-Q1 Automotive 3V to 17V, 1.5A Buck Converter in QFN-16 package TPS62113 1.5-A, 17-Vin Step-Down Converter with LBI function in QFN-16 TPS62120 15V, 75mA, 96% efficiency Step-Down Converter with DCS-Control TPS62122 15V, 75mA, 96% efficiency Step-Down Converter TPS62125 3V-17V, 300mA Buck Converter With Adjustable Enable Threshold And Hysteresis TPS62130 3-17V 3A Step-Down Converter with DCS-Control in 3x3 QFN Package TPS6213013A-Q1 3V - 17V 3A AUTOMOTIVE Step-Down Converter In 3X3 QFN Package TPS62130A 3-V to 17-V, 3-A step-down converter with DCS-control in 3x3 QFN package TPS62130A-Q1 TPS62130A-Q1 3 to 17-V 3-A Automotive Step-Down Converter in 3 × 3 QFN Package TPS62135 3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN TPS62136 3-17V 4.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN TPS62140 3–17V 2A Step-Down Converter with DCS-Control in 3x3 QFN package TPS62140A 3–17V 2A Step-Down Converter with DCS-Control in 3x3 QFN package TPS62147 3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN TPS62148 3-17V 2.0A Step-Down Converter with 1% accuracy and PFM/Forced-PWM in 2x3QFN TPS62150 3–17V 1A Step-Down Converter with DCS-Control in 3x3 QFN package TPS62150A 3-17V 1A 3MHz Step-Down Converter with DCS-Control in 3x3 QFN Package TPS62150A-Q1 TPS62150A-Q1 3 to 17-V 1-A AUTOMOTIVE Step-Down Converter in 3 × 3 QFN Package TPS62160 3V-17V 1A Step-Down Converters with DCS-Control™ TPS62160-Q1 3V-17V 1A Automotive Step-Down Converters in 2x2SON TPS62170 3–17V 0.5A Step-Down Converter with DCS-Control in 2x2 QFN package TPS62170-Q1 3-17V 0.5A Automotive Step-Down Converter in 2x2 QFN package TPS62175 28V, 0.5A Step-Down Converter with SNOOZE Mode TPS62180 4-V to 15-V, 6-A synchronous buck converter with power good, 1% accuracy, and adjustable soft start TPS62184 4-V to 17-V, 6-A synchronous buck converter with power good, 1% accuracy, and adjustable soft start TPS62200 Adjustable, 300-mA, 95% Efficient Step-Down Converter in SOT-23 TPS62220 Adjustable, 400-mA, 95% Efficient Step-Down Converter, 15uA, ThinSOT-23 TPS62240 2.25MHz 300mA Step-Down Converter in 2x2mm SON/TSOT23 Package TPS62250 2.25MHz, 1A Peak Current Limited Step-Down Converter TPS62260 2.25MHz 600mA Step-Down Converter in 2x2mm SON/TSOT23 Package TPS62260-Q1 Automotive 2V to 6V, 2.25MHz Fixed Frequency 600mA Buck Converter in 2x2mm SON/TSOT23 Package TPS62290 2.25MHz 1A Step-Down Converter in 2x2mm SON Package TPS62290-Q1 Automotive 2.3V to 6V, 2.25MHz Fixed Frequency 1A Buck Converter in 2x2mm SON/TSOT23 Package TPS62400 Dual, Adjustable, 400mA and 600mA, 2.25MHz Step-Down Converter with 1-Wire Interface in QFN TPS62400-Q1 Automotive Catalog Dual, Adjustable, 400mA & 600mA, 2.25MHz Step-Down Converter w/ 1-Wire Interface TPS62410 2.25MHZ 2x800mA Dual Step-Down Converter with 1-Wire Interface in QFN TPS62410-Q1 Automotive 2.5V to 6V, 2.25MHz Fixed Frequency Dual (800mA/800mA) Buck Converter TPS62420 Dual, Adjustable, 600mA and 1000mA, 2.25MHz Step-Down Converter with 1-Wire Interface in QFN TPS62420-Q1 Automotive 2.5V to 6V, 2.25MHz Fixed Frequency Dual (1A/600mA) Buck Converter with 1-Wire Interface TPS62480 6A, 2.4V-5.5V input, Synchronous step-down converter with PG Output, Adjust. Soft-start and Optional TPS62510 Adjustable, 96% Efficiency, 1.5A Buck Converter for low input voltages TPS62560 2.25MHz 600mA Step-Down Converter in 2x2mm SON Package TPS62561 2.25MHz 600mA Step-Down Converter in TSOT23 Package TPS62590 2.25MHz, 1A Step-Down Converter in 2 x 2 SON Package TPS62590-Q1 Automotive 2.5V to 6V, 2.25MHz Fixed Frequency 1A Buck Converter in 2x2mm SON Package TPS62750 2.25MHz, Step-Down Converter w/ Programmable Input Current Limits for USB powered Applications TPS62751 2.25MHz, Step-Down Converter w/ Programmble Input Current Limits for USB powered Applications TPS62770 Tiny Single-chip Dual Solution with 360nA Iq Buck and up to 15V Boost in WCSP TPS62810-Q1 Automotive 2.75-V to 6-V, 4-A step-down converter in a 2mm x 3mm wettable-flanks QFN package TPS62810M 2.75-V to 6-V, 4-A step-down converter in a 2-mm x 3-mm QFN package with -55C extended temperature TPS62821 2.4-V to 5.5-V input, 1-A step-down converter with 1% accuracy in 1.5-mm x 2-mm VSON-HR package TPS62822 2.4-V to 5.5-V input, 2-A step-down converter with 1% accuracy in 1.5-mm x 2-mm VSON-HR package TPS62823 2.4-V to 5.5-V input, 3-A step-down converter with 1% accuracy in 1.5-mm x 2-mm VSON-HR package TPS62825 2.4-V to 5.5-V input, 2-A step-down converter with 1% accuracy in 1.5-mm x 1.5-mm QFN TPS62826 2.4-V-5.5-V input, 3-A step-down converter with 1% accuracy in 1.5-mm x 1.5-mm VSON-HR package TPS62827 2.5-V to 5.5-V input, 4-A step-down converter with 1% accuracy in 1.5-mm x 1.5-mm QFN
Buck modules (integrated inductor)
TPS82084 2-A, High-efficiency step-down converter module with integrated inductor TPS82085 3A, High-Efficiency Step-Down Converter Module with Integrated Inductor TPS82130 17-V input 3-A step-down converter module with integrated inductor TPS82140 17V Input 2A Synchronous Step-Down Converter MicroSiP™ Module With Integrated Inductor TPS82150 17V Input 1A Synchronous Step-Down Converter MicroSiP™ Module With Integrated Inductor TPSM82810 2.75-V to 6-V, 4-A step-down module with adjustable-frequency & tracking in 3 x 4-mm μSIP package TPSM82813 2.75-V to 6-V, 3-A step-down module with adjustable-frequency & tracking in 3 x 4-mm μSIP package TPSM82821 5.5-V input, 1-A step-down module with integrated inductor in 2 x 2.5 x 1.1-mm μSIP package TPSM82822 5.5-V input, 2-A step-down module with integrated inductor in 2 x 2.5 x 1.1-mm μSIP package
Precision DACs (≤10 MSPS)
DAC43401 8-bit 1-channel voltage-output smart DAC with Hi-Z, EEPROM, waveform generator and comparator DAC43608 8-bit, 8-channel, I2C, voltage-output DAC in tiny QFN package DAC53401 10-bit 1-channel voltage-output smart DAC with Hi-Z, EEPROM, waveform generator and comparator DAC53608 10-Bit, 8-channel, I2C, voltage output DAC in tiny QFN package
Gerber file

BSR005A Gerbers

SLUC643.ZIP (304 KB)
Simulation tool

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Test report: PDF
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Package Pins Download
VSON-HR (DLC) 8 View options

Ordering & quality

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