LM25007

ACTIVE

9-42V Wide Vin, 0.5A, Constant On-Time Non-Synchronous Buck Regulator

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Product details

Parameters

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Package | Pins | Size

VSSOP (DGK) 8 15 mm² 3 x 4.9 WSON (NGT) 8 16 mm² 4 x 4 open-in-new Find other Buck converters (integrated switch)

Features

  • Integrated 0.74Ω N-Channel MOSFET Switch
  • Guaranteed 0.5A Output Current
  • Ultra-Fast Transient Response
  • Up to 800kHz Operation
  • No Control Loop Compensation Required
  • Vin Feed Forward Provides Constant Operating Frequency
  • 2% Accurate 2.5V Feedback from -40°C to 125°C
  • Highly Efficient Operation
  • Intelligent Current Limit Protection
  • External Shutdown Control
  • Thermal Shutdown
  • VSSOP and Thermally Enhanced WSON Packages
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Description

The LM25007 is a monolithic step-down switching regulator featuring all of the functions needed to implement a low cost, efficient, power supply. Capable of driving a 0.5A load over a 9V-42V input voltage range, this device is easy to apply and is provided in the small VSSOP-8 and the thermally enhanced WSON-8 packages. Ultra-fast transient response is achieved through the use of a constant on-time architecture with Vin feed forward. This feature provides an almost constant operating frequency over load and input voltage variations. The operating frequency can be adjusted with a single resistor. This architecture is easy to use and tolerant of component selection. An intelligent current limit is implemented in the LM25007 with forced off time that is inversely proportional to Vout thus ensuring recovery from fault conditions. The output voltage may be set from 2.5V to >30V. To improve efficiency in light load applications, the Vcc pin can be connected to an external voltage source to eliminate the drop through the internal regulator. Additional features include: thermal shutdown, Vcc under-voltage lockout, gate drive under-voltage lockout, and max duty cycle limiter.

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Same functionality but is not pin-for-pin or parametrically equivalent to the compared device:
LMR34206-Q1 ACTIVE 4.2-V to 42-V, 0.6-A ultra-small synchronous step-down converter Next-generation 4.2-V to 42-V, 0.6-A ultra-small synchronous step-down converter.

Technical documentation

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Type Title Date
* Datasheet LM25007 42V, 0.5A Step-Down Switching Regulator datasheet (Rev. C) Feb. 20, 2013
Technical articles Minimize the impact of the MLCC shortage on your power application Mar. 29, 2019
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Application notes Analysis & Design of Hysteretic Constant Freq Buck Regr Using the LM5007 (Rev. B) Apr. 30, 2013
User guides AN-1453 LM25007 Evaluation Board (Rev. A) Apr. 24, 2013
Application notes Boot Capacitor Regulation in LM25007 Constant-On-Time (COT) Converter (Rev. A) Apr. 23, 2013

Design & development

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Design tools & simulation

SIMULATION MODELS Download
SNVM245.ZIP (58 KB) - PSpice Model
SIMULATION MODELS Download
SNVMAL3.ZIP (3 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOLS Download
LM25007 Quick Start Calculator
LM25007QUICK-CALC

CAD/CAE symbols

Package Pins Download
VSSOP (DGK) 8 View options
WSON (NGT) 8 View options

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