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Product details

Parameters

Vin (Min) (V) 2.7 Vin (Max) (V) 10 Vout (Min) (V) 0.8 Vout (Max) (V) 10 Iout (Max) (A) 5 Iq (Typ) (mA) 0.26 Iq (Typ) (uA) 260 Switching frequency (Min) (kHz) 100 Switching frequency (Max) (kHz) 2000 Features Enable, Light Load Efficiency Operating temperature range (C) -40 to 125 Regulated outputs (#) 1 Number of Phases 1 Rating Catalog open-in-new Find other Buck controllers (external switch)

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Buck controllers (external switch)

Features

  • Easy-to-Use Control Methodology
  • 0.8 V to VIN Adjustable Output Range
  • High Efficiency (90% Typical)
  • ±0.9% (±1.5% Over Temperature) Feedback
    Voltage
  • 100% Duty Cycle Capable
  • Maximum Operating Frequency up to 2 MHz
  • Internal Soft-Start
  • Enable Pin
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Description

The LM3475 is a hysteretic P-FET buck controller designed to support a wide range of high efficiency applications in a very small SOT-23-5 package. The hysteretic control scheme has several advantages, including simple system design with no external compensation, stable operation with a wide range of components, and extremely fast transient response. Hysteretic control also provides high efficiency operation, even at light loads. The PFET architecture allows for low component count as well as 100% duty cycle and ultra-low dropout operation.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet LM3475 Hysteretic PFET Buck Controller datasheet (Rev. C) Oct. 31, 2015
Selection guides Power Management Guide 2018 (Rev. R) Jun. 25, 2018
Selection guides Control-Mode Quick Reference Guide (Rev. A) Sep. 14, 2017
User guides PMLK Buck Experiment Book (Rev. B) Apr. 21, 2017
User guides Power-Management-Laborkit Buck- Experimentierbuch (Rev. B) Apr. 21, 2017
User guides Cost Effective Test Methods Using PMLK BUCK Boards (Rev. A) Aug. 31, 2016
User guides PMLK Buck Experiment Book (Rev. A) Aug. 31, 2016
User guides AN-1381 LM3475 Evaluation Board (Rev. A) Apr. 29, 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
Description

The LM3475 evaluation board is provided as a tool for developing DC/DC converters based on the LM3475 IC. As shown in Figure 1, the evaluation board is configured to provide an output of 2.5V at up to 2A from an input up to 10V. The corresponding bill of material is given in Table 1. Typical (...)

Features
  • Easy to use control methodology
  • 0.8V to VIN adjustable output range
  • High Efficiency (90% typical)
  • 0.9% (1/5% over temp) feedback voltage
  • 100% duty cycle capable
  • Maximum operating frequency up to 2MHz
  • Internal Soft-Start
  • Enable pin
  • SOT23-5 package

Applications

  • TFT Monitor
  • Auto PC
  • Vehicle Security
  • Navigation (...)
EVALUATION BOARDS Download
document-generic User guide
49
Description

The TI-PMLK Buck Experiment Board is part of the TI Power Management Lab Kit (TI-PMLK) series. TI-PMLK series provides hands on learning to reinforce power supply knowledge. The modular format allows users to customize the TI-PMLK series experience in a way that makes the most impact on (...)

Features
  • Two different IC sections to expand the learning experience

  • Each section is configurable with jumpers for different exercises

  • The Buck Board is accompanied by a downloadable Buck Experiments Book

                  

Design tools & simulation

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
  • (...)

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 5 View options

Ordering & quality

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