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Product details

Parameters

Vin (Min) (V) 2.7 Vin (Max) (V) 7 Vout (Min) (V) 1.26 Vout (Max) (V) 20 Switch current limit (Typ) (A) 2.6 Regulated outputs (#) 1 Switching frequency (Min) (kHz) 615 Switching frequency (Max) (kHz) 1250 Iq (Typ) (mA) 1.3 Features Enable Duty cycle (Max) (%) 92.5 Operating temperature range (C) -40 to 125 Rating Catalog open-in-new Find other Boost converters (integrated switch)

Package | Pins | Size

VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Boost converters (integrated switch)

Features

  • Operating Voltage Range of 2.7V to 7V
  • 615kHz/1.25MHz Pin Selectable Frequency Operation
  • Over Temperature Protection
  • Optional Soft-Start Function
  • 8-Lead VSSOP Package

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Description

The LM3224 is a step-up DC/DC converter with a 0.15Ω (typ.), 2.45A (typ.) internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM3224 is an ideal part for biasing TFT displays. With the high current switch it is also ideal for driving high current white LEDs for flash applications. The LM3224 can be operated at switching frequencies of 615kHz and 1.25MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting frequency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. An external soft-start pin allows the user to control the amount of inrush current during start up. The LM3224 is available in a low profile 8-lead VSSOP package.

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Technical documentation

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Type Title Date
* Datasheet LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter datasheet (Rev. C) Mar. 07, 2013
Selection guide Power Management Guide 2018 (Rev. R) Jun. 25, 2018
User guide AN-1394 LM3224 Evaluation Board (Rev. A) Apr. 26, 2013

Design & development

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Hardware development

EVALUATION BOARD Download
document-generic User guide
79
Description

The LM3224 is a step-up DC/DC converter with a 0.15 ohm (typ.), 2.45A (typ) internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM3224 is an ideal part for biasing TFT displays. WIth the high current switch it is also (...)

Features
  • Operating voltage range of 2.7V to 7V
  • 615kHz/1.25MHz pin selectable frequency operation
  • Over temperature protection
  • Optional soft-start function
  • 8-Lead MSOP package

Applications

  • TFT Bias Suplies
  • Handheld Devices
  • Portable Applications
  • GSM/CDMA Phones
  • Digital Cameras
  • White LED Flash/Torch Applications

 

Design tools & simulation

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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
VSSOP (DGK) 8 View options

Ordering & quality

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  • MSL rating/Peak reflow
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  • Qualification summary
  • Ongoing reliability monitoring

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