Product details

Vin (Min) (V) 7 Vin (Max) (V) 18 Vout (Min) (V) 0.76 Vout (Max) (V) 5.5 Iout (Max) (A) 4.5 Iq (Typ) (uA) 850 Switching frequency (Min) (kHz) 700 Switching frequency (Max) (kHz) 700 Features Enable, Light Load Efficiency, Power Good, Synchronous Rectification, Soft Start Adjustable Operating temperature range (C) -20 to 85 Rating Catalog Regulated outputs (#) 1
Vin (Min) (V) 7 Vin (Max) (V) 18 Vout (Min) (V) 0.76 Vout (Max) (V) 5.5 Iout (Max) (A) 4.5 Iq (Typ) (uA) 850 Switching frequency (Min) (kHz) 700 Switching frequency (Max) (kHz) 700 Features Enable, Light Load Efficiency, Power Good, Synchronous Rectification, Soft Start Adjustable Operating temperature range (C) -20 to 85 Rating Catalog Regulated outputs (#) 1
HTSSOP (PWP) 14 32 mm² 5 x 6.4 VQFN (RSA) 16 16 mm² 4 x 4
  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 7 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized
    for Lower Duty Cycle Applications
    – 63 mΩ (High Side) and 55 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Power Good Output
  • Auto-Skip Eco-mode for High Efficiency at Light Load
  • APPLICATIONS
    • Wide Range of Applications for Low Voltage System
      • Digital TV Power Supply
      • High Definition Blu-ray Disc™ Players
      • Networking Home Terminal
      • Digital Set Top Box (STB)

All trademarks are the property of their respective owners.

  • D-CAP2™ Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 7 V to 18 V
  • Output Voltage Range: 0.76 V to 5.5 V
  • Highly Efficient Integrated FET’s Optimized
    for Lower Duty Cycle Applications
    – 63 mΩ (High Side) and 55 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 700-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
  • Power Good Output
  • Auto-Skip Eco-mode for High Efficiency at Light Load
  • APPLICATIONS
    • Wide Range of Applications for Low Voltage System
      • Digital TV Power Supply
      • High Definition Blu-ray Disc™ Players
      • Networking Home Terminal
      • Digital Set Top Box (STB)

All trademarks are the property of their respective owners.

The TPS54429E is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54429E enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54429E uses the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54429E to maintain high efficiency during lighter load conditions. The TPS54429E also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP, SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 7-V to 18-V VIN input. The output voltage can be programmed between 0.76V and 5.5V. The device also features an adjustable soft start time and a power good function. The TPS54429E is available in the 14-pin HTSSOP package and the 16 pin QFN package, designed to operate from –20°C to 85°C.

The TPS54429E is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54429E enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54429E uses the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54429E to maintain high efficiency during lighter load conditions. The TPS54429E also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP, SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 7-V to 18-V VIN input. The output voltage can be programmed between 0.76V and 5.5V. The device also features an adjustable soft start time and a power good function. The TPS54429E is available in the 14-pin HTSSOP package and the 16 pin QFN package, designed to operate from –20°C to 85°C.

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Technical documentation

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Type Title Date
* Data sheet 7V to 18V Input, 4.5-A Synchronous Step-Down SWIFTTM Converter with Eco-Mode™ datasheet 19 Jan 2011
User guide TPS54429E Step-Down Converter Evaluation Module User's Guide (Rev. A) 30 Aug 2021
Technical article Minimize the impact of the MLCC shortage on your power application 29 Mar 2019
Application note D-CAP2 Frequency Response Model, based on frequency domain analysis of Fixed On- 02 Jan 2013

Design & development

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

Evaluation board

TPS54429EEVM-608 — Evaluation Module for TPS54429E Synchronous Step-Down Converter with Auto-Skip ECO Mode

The TPS54429EEVM-608 is a fully assembled and tested circuit for evaluating the TPS54429E Synchronous Step-Down SWIFT Converter with Auto-Skip ECO-Mode. The TPS54429EEVM-608 operates from a 7V to 18V input and provides a 1.05V output at 4.5A.
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Development kit

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The EVMK2GX (also known as "K2G") 1GHz evaluation module (EVM) enables developers to immediately start evaluating the 66AK2Gx processor family, and to accelerate the development of audio, industrial motor control, smart grid protection and other high reliability, real-time compute intensive (...)

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Development kit

EVMK2GXS — 66AK2Gx (K2G) 1GHz High-Secure Evaluation Module

The K2G 1GHz High Secure Evaluation Module (EVM) enables developers to start  evaluating and testing the programming of the  high secure developmental version of the  66AK2Gx processor, and to accelerate the next stage of secure boot product development of audio and industrial real (...)

Simulation model

TPS54429E Unencrypted PSpice Transient Model Package (Rev. A)

SLVM127A.ZIP (42 KB) - PSpice Model
Simulation model

TPS54429E TINA-TI Transient Spice Model

SLVM379.ZIP (41 KB) - TINA-TI Spice Model
Simulation model

TPS54429E TINA-TI Transient Reference Design

SLVM380.TSC (655 KB) - TINA-TI Reference Design
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
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HTSSOP (PWP) 14 View options
QFN (RSA) 16 View options

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