TPS54239E

ACTIVE

4.5V to 23V Input, 2-A Synchronous Step-Down Converter with Eco-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) 2 Iq (Typ) (uA) 600 Switching frequency (Min) (kHz) 600 Switching frequency (Max) (kHz) 600 Features Enable, Light Load Efficiency, 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 7.0 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
  • Auto-Skip Eco-mode for High Efficiency at Light Load
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Description

The TPS54239E is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54239E 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 TPS54239E uses the D-CAP2™ mode control that provides a 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 TPS54239 to maintain high efficiency during lighter load conditions. The TPS54239E 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 TPS54239E 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:
TPS54229E ACTIVE 4.5V to 18V Input, 2-A Synchronous Step-Down Converter with Eco-Mode Pin-to-pin compatible lower current part (2 A).
TPS54239 ACTIVE 4.5V to 23V Input, 2A Synchronous Step-Down Converter with D-CAP2 Mode This product has FCCM.
TPS54339E ACTIVE 4.5V to 23V Input, 3A Synchronous Step-Down Converter with D-CAP2 Mode and Light Load Efficiency Pin-to-pin compatible higher current part (3 A).
Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
TPS54226 ACTIVE 4.5V to 18V Input, 2A Synchronous Step-Down Converter with Eco-Mode™ This product has lower input voltage (18 V) and power-good functionality.
TPS54231 ACTIVE 3.5 to 28V Input, 2A, 570kHz Step-Down Converter with Eco-mode™ This product has a higher input voltage up to 28 V.
TPS56339 ACTIVE 4.5-V to 24-V input, 3-A output synchronous buck converter This product has a smaller package, higher input voltage (24 V), and is a higher efficiency product.
Similar but not functionally equivalent to the compared device:
TPS54294 ACTIVE 4.5 V to 18 V input, dual 2 A output, synchronous step-down converter, with 1 ms fixed soft start Dual 2-A output product with power good and lower input voltage (18 V).

Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet 4.5 V to 23 V Input, 2-A Synchronous Step-Down SWIFTTM Converter with ECO-ModeTM datasheet Jan. 07, 2013
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
User guide TPS54239EEVM-056, 2-A, Regulator with Eco-Mode™ Evaluation Module Jan. 09, 2013

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