TPS54339

ACTIVE

4.5V to 23V Input, 3A Synchronous Step-Down Converter with D-CAP2 Mode

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Product details

Parameters

Vin (Min) (V) 4.5 Vin (Max) (V) 23 Vout (Min) (V) 0.76 Vout (Max) (V) 7 Iout (Max) (A) 3 Iq (Typ) (mA) 0.85 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 600 Features Enable, Synchronous Rectification, Soft Start Adjustable Operating temperature range (C) -40 to 85 Rating Catalog Regulated outputs (#) 1 open-in-new Find other Buck converters (integrated switch)

Package | Pins | Size

HSOIC (DDA) 8 19 mm² 4.9 x 3.9 open-in-new Find other Buck converters (integrated switch)

Features

  • D-CAP2 Mode Enables Fast Transient Response
  • Low Output Ripple and Allows Ceramic Output Capacitor
  • Wide VIN Input Voltage Range: 4.5 V to 23 V
  • Output Voltage Range: 0.76 V to 7 V
  • Highly Efficient Integrated FETs Optimized
    for Lower Duty Cycle Applications
    – 140 mΩ (High Side) and 70 mΩ (Low Side)
  • High Efficiency, less than 10 µA at shutdown
  • High Initial Bandgap Reference Accuracy
  • Adjustable Soft Start
  • Pre-Biased Soft Start
  • 600-kHz Switching Frequency (fSW)
  • Cycle By Cycle Over Current Limit
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Description

The TPS54339 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54339 enables system designers to complete the suite of various end-equipment power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54339 uses the D-CAP2™ mode control that provides a fast transient response with no external compensation components. The TPS54339 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP or SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 23-V VIN input. The output voltage can be programmed between 0.76 V and 7 V. The device also features an adjustable soft start time. The TPS54339 is available in the 8-pin DDA package, and designed to operate from –40°C to 85°C.

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Same functionality and pinout but is not an equivalent to the compared device:
TPS54239 ACTIVE 4.5V to 23V Input, 2A Synchronous Step-Down Converter with D-CAP2 Mode Pin-to-pin compatible lower current product (2 A).
TPS54339E ACTIVE 4.5V to 23V Input, 3A Synchronous Step-Down Converter with D-CAP2 Mode and Light Load Efficiency This product has Eco-mode™ operation.
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS54325 ACTIVE 4.5V to 18V Input, 3A Synchronous Step-Down Converter This product has power-good functionality.
TPS54329 ACTIVE 4.5V to 18V Input, 3A Synchronous Step-Down Converter with D-CAP2 Mode This product has lower input voltage.
TPS54331 ACTIVE 3.5V to 28V Input, 3A, 570kHz Step-Down Converter with Eco-mode This product has higher input voltage (28 V).
TPS54531 ACTIVE 3.5V to 28V Input, 5A, 570kHz Step-Down Converter with Eco-mode This product has higher input voltage up to 28 V and higher output current up to 5 A.
Similar but not functionally equivalent to the compared device:
TPS54394 ACTIVE 3A Dual Channel Synchronous Step-Down Switcher with Integrated FET Dual 3-A output product with power-good functionality.

Technical documentation

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Type Title Date
* Datasheet 4.5 V to 23 V Input, 3-A Synchronous Step-Down SWIFTTM Converter datasheet Jan. 07, 2013
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guides TPS54339EVM-056, 3-A, Regulator Evaluation Module Jan. 09, 2013

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$25.00
Description
The Texas Instruments TPS54339EVM-056 evaluation module helps designers evaluate the performance of the TPS54339 4.5V to 23V input, 3-A synchronous step-down DC/DC converter.
Features
  • 23V maximum input voltage
  • Synchronous converter with integrated FETs
  • DCAP2 control
  • Fast transient response

Design tools & simulation

SIMULATION MODELS Download
SLVM827.ZIP (62 KB) - PSpice Model
SIMULATION MODELS Download
SLVM836.ZIP (48 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLVM837.TSC (164 KB) - TINA-TI Reference Design

Reference designs

REFERENCE DESIGNS Download
Class 1 PoE - High Efficiency IP Camera Power Module Reference Design
TIDA-00079 This IP Camera power module is a highly efficient power solution that enables high performance 1080p operation at the Class 1 PoE power level. This innovative power module, used in the low power DM385-AR331 IP Camera, relies on highly efficient switchers like the TPS5432 that are also very cost (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SO PowerPAD (DDA) 8 View options

Ordering & quality

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