LTC3245
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LTC3245

Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump

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LTspice LTC3245 - Inductorless (Charge Pump) DC/DC Converters Download 1.2 KB
Part Models 16
1ku List Price Starting From $3.37
Features
  • 2.7V to 38V VIN Range
  • IQ = 18μA Operating; 4μA in Shutdown
  • 12V to 5V Efficiency = 81%
  • Multimode Operation (2:1, 1:1, 1:2) with Automatic Mode Switching
  • Low Noise, Constant Frequency Operation
  • Pin Selectable Burst Mode® Operation
  • VOUT: Fixed 3.3V, 5V or Adjustable (2.5V to 5V)
  • IOUT Up to 250mA
  • Overtemperature and Short-Circuit Protection
  • Operating Junction Temperature: 150°C Maximum
  • Thermally Enhanced 12-Pin MSOP and Low Profile 12-Pin (3mm × 4mm) DFN Packages
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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The LTC3245 is a switched capacitor buck-boost DC/DC converter that produces a regulated output (3.3V, 5V or adjustable) from a 2.7V to 38V input. The device uses switched capacitor fractional conversion to maintain regulation over a wide range of input voltage. Internal circuitry automatically selects the conversion ratio to optimize efficiency as input voltage and load conditions vary. No inductors are required.

The unique constant frequency architecture provides a lower noise output than conventional charge pump regulators. To optimize efficiency at the expense of slightly higher output ripple, the device has pin selectable Burst Mode operation.

Low operating current (20μA with no load, 4μA in shutdown) and low external parts count (three small ceramic capacitors) make the LTC3245 ideally suited for low power, space constrained automotive/industrial applications. The device is short-circuit and overtemperature protected, and is available in thermally enhanced 12-pin MSOP and low profile 3mm × 4mm 12-pin DFN packages.

APPLICATIONS

  • Automotive ECU/CAN Transceiver Supplies
  • Industrial Housekeeping Supplies
  • Low Power 12V to 5V Conversion
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file View Data Sheet (Rev.C)
Documentation View All Documentation
LTspice LTC3245 - Inductorless (Charge Pump) DC/DC Converters Download 1.2 KB
Part Models 16
1ku List Price Starting From $3.37
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LTC3245

Documentation

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Data Sheet

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UPDATED 07/11/2013
English

LTC3245: Wide VIN Range, Low Noise, 250mA Buck-Boost Charge Pump Data Sheet (Rev.C)

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UPDATED 09/06/2013
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LTC3245: 入力電圧範囲の広い低ノイズの250mA昇降圧チャージポンプ データシート

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Reliability Data

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UPDATED 03/26/2018
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User Guide

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UPDATED 03/21/2013
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DC1802A - Demo Manual redirect icon

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UPDATED 07/11/2016
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High Voltage Charge Pumps Deliver Low EMI redirect icon

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Documentation

Documentation

Solutions Bulletin & Brochure 1

Charge Pumps Go High Voltage

Product Selector Card 1

High Voltage Charge Pump IC Solutions

Video

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Video

2017-09-18

LTC3245 Video Product Brief

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC3245EDE#PBF 12-Lead DFN (4mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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LTC3245EDE#TRPBF 12-Lead DFN (4mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC3245EMSE#PBF 12-Lead MSOP w/ EP external-link
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  • Material Declaration external-link
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LTC3245EMSE#TRPBF 12-Lead MSOP w/ EP external-link
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  • Material Declaration external-link
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LTC3245HMSE#PBF 12-Lead MSOP w/ EP external-link
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LTC3245HMSE#TRPBF 12-Lead MSOP w/ EP external-link
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  • Material Declaration external-link
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LTC3245IDE#PBF 12-Lead DFN (4mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC3245IDE#TRPBF 12-Lead DFN (4mm x 3mm w/ EP) external-link
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  • Material Declaration external-link
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LTC3245IMSE#PBF 12-Lead MSOP w/ EP external-link
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LTC3245IMSE#TRPBF 12-Lead MSOP w/ EP external-link
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LTC3245IMSE#WPBF 12-Lead MSOP w/ EP external-link
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LTC3245IMSE#WTRPBF 12-Lead MSOP w/ EP external-link
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LTC3245JMSE#WPBF 12-Lead MSOP w/ EP external-link
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LTC3245JMSE#WTRPBF 12-Lead MSOP w/ EP external-link
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LTC3245MPMSE#PBF 12-Lead MSOP w/ EP external-link
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LTC3245MPMSE#TRPBF 12-Lead MSOP w/ EP external-link
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Product Lifecycle

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Jul 31, 2020

- 20_0245

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC3245EDE#PBF

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LTC3245EDE#TRPBF

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LTC3245EMSE#PBF

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LTC3245EMSE#TRPBF

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LTC3245HMSE#PBF

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LTC3245IDE#PBF

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Material_Report

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Delta Qualification Matrix

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Qualification Results Summary

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Feb 4, 2020

- 20_0129

Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3245EMSE#PBF

PRODUCTION

LTC3245EMSE#TRPBF

PRODUCTION

LTC3245HMSE#PBF

PRODUCTION

LTC3245HMSE#TRPBF

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LTC3245MPMSE#PBF

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LTC3245MPMSE#TRPBF

PRODUCTION

pdf

PCN20_0129_Form

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xls

Material_Report

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Oct 11, 2022

- 22_0244

Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC3245HMSE#PBF

PRODUCTION

LTC3245HMSE#TRPBF

PRODUCTION

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PCN22_0244_Form

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xls

Material_Report

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Qualification Results Summary

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xlsm

Delta Qualification Matrix

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Apr 18, 2022

- 22_0050

UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

LTC3245HMSE#PBF

PRODUCTION

LTC3245HMSE#TRPBF

PRODUCTION

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PCN22_0050_Form

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xls

Material_Report

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pdf

Qualification Results Summary

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xlsm

Delta Qualification Matrix

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PCN

Jul 31, 2020

- 20_0245

arrow down

Notification of Wafer Fab Location Change for 0.6µm BICMOS Process Devices from ADI Milpitas (Hillview) to Vanguard Int. (Taiwan)

LTC3245EDE#PBF

PRODUCTION

LTC3245EDE#TRPBF

PRODUCTION

LTC3245EMSE#PBF

PRODUCTION

LTC3245EMSE#TRPBF

PRODUCTION

LTC3245HMSE#PBF

PRODUCTION

LTC3245HMSE#TRPBF

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LTC3245IDE#PBF

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LTC3245IDE#TRPBF

PRODUCTION

LTC3245IMSE#PBF

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LTC3245IMSE#TRPBF

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LTC3245MPMSE#PBF

PRODUCTION

LTC3245MPMSE#TRPBF

PRODUCTION

pdf

PCN20_0245_Form

external-icon

xls

Material_Report

Download

xlsm

Delta Qualification Matrix

Download

pdf

Other

external-icon

pdf

Qualification Results Summary

external-icon
Feb 4, 2020

- 20_0129

arrow down

Laser Mark Conversion for 12-Lead MSOP Packages Assembled in ADPG and UTAC

LTC3245EMSE#PBF

PRODUCTION

LTC3245EMSE#TRPBF

PRODUCTION

LTC3245HMSE#PBF

PRODUCTION

LTC3245HMSE#TRPBF

PRODUCTION

LTC3245MPMSE#PBF

PRODUCTION

LTC3245MPMSE#TRPBF

PRODUCTION

pdf

PCN20_0129_Form

external-icon

xls

Material_Report

Download
Oct 11, 2022

- 22_0244

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Epoxy Change from Henkel 8290 to 8290A for MSOP Package

LTC3245HMSE#PBF

PRODUCTION

LTC3245HMSE#TRPBF

PRODUCTION

pdf

PCN22_0244_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download
Apr 18, 2022

- 22_0050

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UTAC Thai Limited (UTL) as Alternate Assembly Site for MSOP Packages / Devices

LTC3245HMSE#PBF

PRODUCTION

LTC3245HMSE#TRPBF

PRODUCTION

pdf

PCN22_0050_Form

external-icon

xls

Material_Report

Download

pdf

Qualification Results Summary

external-icon

xlsm

Delta Qualification Matrix

Download
Software & Part Ecosystem

Software & Part Ecosystem

Parts Product Life Cycle Description

Surge Stopper, Overvoltage, and Overcurrent Protection1
LT4363
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High Voltage Surge Stopper with Current Limit

Evaluation Kit

Evaluation Kits 1

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DC1802A

LTC3245EMSE Demo Board | Buck-Boost Charge Pump, 2.7V ≤ VIN ≤ 38V, VOUT = 1.2V/3.3V/5V @ 250mA

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DC1802A

LTC3245EMSE Demo Board | Buck-Boost Charge Pump, 2.7V ≤ VIN ≤ 38V, VOUT = 1.2V/3.3V/5V @ 250mA

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DC1802A
LTC3245EMSE Demo Board | Buck-Boost Charge Pump, 2.7V ≤ VIN ≤ 38V, VOUT = 1.2V/3.3V/5V @ 250mA
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Product Detail

Demonstration circuit DC1802A is a wide VIN range, low noise, 250mA buck-boost charge pump featuring the LTC3245EMSE. It has an input supply range of 2.7V to 38V and provides a jumper-selectable 5V, 3.3V, or adjustable output (set to 1.2V) at 250mA.

Resources

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DC1802A - Design Files Download

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DC1802A - Demo Manual Download

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DC1802A - Schematic Download

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Evaluation Kits1

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DC1802A

LTC3245EMSE Demo Board | Buck-Boost Charge Pump, 2.7V ≤ VIN ≤ 38V, VOUT = 1.2V/3.3V/5V @ 250mA
Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

To launch ready-to-run LTspice demonstration circuits for this part:

Step 1: Download and install LTspice on your computer.

Step 2: Click on the link in the section below to download a demonstration circuit.

Step 3: If LTspice does not automatically open after clicking the link below, you can instead run the simulation by right clicking on the link and selecting “Save Target As.” After saving the file to your computer, start LTspice and open the demonstration circuit by selecting ‘Open’ from the ‘File’ menu.

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LTC3245 - Inductorless (Charge Pump) DC/DC Converters Download

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