TPS629203

ACTIVE

3-V to 17-V, 0.3-A, low-IQ, synchronous buck converter in SOT-583 package

Product details

Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 3 Vin (max) (V) 17 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 2500 Features Enable, Forced PWM, Light Load Efficiency, Output discharge, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification, Tracking, UVLO adjustable Control mode DCS-Control Vout (min) (V) 0.4 Vout (max) (V) 5.5 Iq (typ) (µA) 4 Duty cycle (max) (%) 100
Rating Catalog Operating temperature range (°C) -40 to 150 Topology Buck Type Converter Iout (max) (A) 0.3 Vin (min) (V) 3 Vin (max) (V) 17 Switching frequency (min) (kHz) 1000 Switching frequency (max) (kHz) 2500 Features Enable, Forced PWM, Light Load Efficiency, Output discharge, Over Current Protection, Power good, Soft Start Fixed, Synchronous Rectification, Tracking, UVLO adjustable Control mode DCS-Control Vout (min) (V) 0.4 Vout (max) (V) 5.5 Iq (typ) (µA) 4 Duty cycle (max) (%) 100
SOT-5X3 (DRL) 8 3.36 mm² 2.1 x 1.6
  • High-efficiency DCS-Control topology
    • Internal compensation
    • Seamless PWM/PFM transition
  • 4-µA typical low quiescent current
  • Output current up to 0.3 A
  • RDSON: 250-mΩ high side, 85-mΩ low side
  • Output voltage accuracy of ±1%
  • Configurable output voltage options:
    • VFB external divider: 0.6 V to 5.5 V
    • VSET internal divider:
      • 18 options between 0.4 V and 5.5 V
  • Flexibility through the MODE/S-CONF pin
    • 2.5-MHz or 1.0-MHz switching frequency
    • Forced PWM or auto (PFM) power save mode with dynamic mode change option
    • Output discharge on/off
  • No external bootstrap capacitor required
  • Overcurrent and overtemperature protection
  • 100% duty cycle mode
  • Precise enable input
  • Power-good output
  • Pin-to-pin compatible with the TPS629210 and TPS629206 devices
  • 0.5-mm pitch, 8-pin SOT-5X3 package
  • High-efficiency DCS-Control topology
    • Internal compensation
    • Seamless PWM/PFM transition
  • 4-µA typical low quiescent current
  • Output current up to 0.3 A
  • RDSON: 250-mΩ high side, 85-mΩ low side
  • Output voltage accuracy of ±1%
  • Configurable output voltage options:
    • VFB external divider: 0.6 V to 5.5 V
    • VSET internal divider:
      • 18 options between 0.4 V and 5.5 V
  • Flexibility through the MODE/S-CONF pin
    • 2.5-MHz or 1.0-MHz switching frequency
    • Forced PWM or auto (PFM) power save mode with dynamic mode change option
    • Output discharge on/off
  • No external bootstrap capacitor required
  • Overcurrent and overtemperature protection
  • 100% duty cycle mode
  • Precise enable input
  • Power-good output
  • Pin-to-pin compatible with the TPS629210 and TPS629206 devices
  • 0.5-mm pitch, 8-pin SOT-5X3 package

The TPS6292xx family of devices are highly efficient, small, and highly flexible synchronous step-down DC-DC converter s that are easy to use. A wide 3-V to 1 7-V input voltage range supports a wide variety of systems powered from either 12-V, 5-V, or 3.3-V supply rails, or single-cell or multi-cell Li-Ion batteries. The TPS629203 can be configured to run at either 2.5 MHz or 1 MHz in a forced PWM mode or a variable frequency (auto PFM) mode. In auto PFM mode, the device automatically transitions to power save mode at light loads to maintain high efficiency. The low 4-µA typical quiescent current also provides high efficiency down to the smallest loads. TI’s automatic efficiency enhancement (AEE) mode holds a high conversion efficiency through the whole operation range without the need of using different inductors by automatically adjusting the switching frequency based on input and output voltages. In addition to selecting the switching frequency behavior, the MODE/S-CONF input pin can also be used to select between different combinations of external and internal feedback dividers and enabling and disabling the output voltage discharge capability. In the internal feedback configuration, a resistor between the FB/VSET pin and GND can be used to select between 18 different output voltage options (see Table 8-2).

The TPS6292xx family of devices are highly efficient, small, and highly flexible synchronous step-down DC-DC converter s that are easy to use. A wide 3-V to 1 7-V input voltage range supports a wide variety of systems powered from either 12-V, 5-V, or 3.3-V supply rails, or single-cell or multi-cell Li-Ion batteries. The TPS629203 can be configured to run at either 2.5 MHz or 1 MHz in a forced PWM mode or a variable frequency (auto PFM) mode. In auto PFM mode, the device automatically transitions to power save mode at light loads to maintain high efficiency. The low 4-µA typical quiescent current also provides high efficiency down to the smallest loads. TI’s automatic efficiency enhancement (AEE) mode holds a high conversion efficiency through the whole operation range without the need of using different inductors by automatically adjusting the switching frequency based on input and output voltages. In addition to selecting the switching frequency behavior, the MODE/S-CONF input pin can also be used to select between different combinations of external and internal feedback dividers and enabling and disabling the output voltage discharge capability. In the internal feedback configuration, a resistor between the FB/VSET pin and GND can be used to select between 18 different output voltage options (see Table 8-2).

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Technical documentation

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* Data sheet TPS629203 300-mA, 3-V to 17-V Low IQ Buck Converter with DCS-Control datasheet PDF | HTML 10 Mar 2022
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
Certificate TPS629203EVM EU RoHS Declaration of Conformity (DoC) 31 Jan 2022
User guide TPS629203 Buck Converter Evaluation Module User's Guide PDF | HTML 28 Jan 2022

Design & development

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

Evaluation board

TPS629203EVM — TPS629203 evaluation module 3-V to 17-V input, 300-mA, low-IQ, SOT-583 synchronous buck converter

The TPS629203EVM evaluation module (EVM) facilitates the evaluation of the TPS629203 300-mA buck converter in a small SOT-583 package. The EVM outputs a 3.3-V output voltage from input voltage between 3 V and 17 V. The TPS629203 is a high-efficiency, low-IQ buck converter for use in a variety of (...)

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

TPS629203 PSpice Transient Model

SLVMDS0.ZIP (265 KB) - PSpice Model
Reference designs

PMP23331 — 19-W, AC/DC multioutput 5-V and 12-V ZVS flyback reference design for server applications

This reference design converts a universal AC input to an isolated 12-V, 1.5-A output and an isolated 5-V, 0.2-A output. The design achieves a peak efficiency of 92.7%. This reference design features UCC28781-Q1 which is a zero-voltage switching (ZVS) flyback controller to minimize switching (...)
Test report: PDF
Package Pins Download
SOT-5X3 (DRL) 8 View options

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