LTC3769
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LTC3769

60V Low IQ Synchronous Boost Controller with PassThru

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Documentation View All Documentation
LTspice LTC3769 - Step-Up (Boost) Regulators Download 2.95 KB LTspice LTC3769 Demo Circuit - High Voltage 60V Synchronous Boost Controller (6-55V to 48V @ 1A) Download 5.00KB LTspice LTC3769 - Step-Up (Boost) Regulators, LT8551 - Step-Up (Boost) Regulators Download 15.56 KB
Part Models 20
1ku List Price Starting From $3.31
Features
  • Synchronous Operation for Highest Efficiency and Reduced Heat Dissipation
  • Wide VIN Range: 4.5V to 60V (65V Abs Max); Operates Down to 2.3V After Start-Up
  • Output Voltage Up to 60V
  • ±1% 1.200V Reference Voltage
  • RSENSE or Inductor DCR Current Sensing
  • 100% Duty Cycle Capability for Synchronous MOSFET
  • Low Quiescent Current: 28μA
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Power Good Output Voltage Monitor
  • Low Shutdown Current: 4μA
  • Internal LDO Powers Gate Drive from VBIAS or EXTVCC
  • Thermally Enhanced Low Profile 24-Pin 4mm × 4mm QFN Package and 20-Lead TSSOP Package
  • AEC-Q100 Qualified for Automotive Applications
Additional Details
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LTC3769 is a high performance single output synchronous boost converter controller that drives an all N-channel power MOSFET stage. Synchronous rectification increases efficiency, reduces power losses and eases thermal requirements, simplifying high power boost applications. The 28μA no-load quiescent current extends operating run time in battery-powered systems.

A 4.5V to 60V input supply range encompasses a wide range of system architectures and battery chemistries. When biased from the output of the boost converter or another auxiliary supply, the LTC3769 can operate from an input supply as low as 2.3V after start-up. The operating frequency can be set within a 50kHz to 900kHz range or synchronized to an external clock using the internal PLL.

The SS pin ramps the output voltage during start-up. The PLLIN/MODE pin selects Burst Mode® operation, pulse-skipping mode or forced continuous mode at light loads.

APPLICATIONS

  • Industrial
  • Automotive
  • Medical
  • Military
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file View Data Sheet (Rev.B)
Documentation View All Documentation
LTspice LTC3769 - Step-Up (Boost) Regulators Download 2.95 KB LTspice LTC3769 Demo Circuit - High Voltage 60V Synchronous Boost Controller (6-55V to 48V @ 1A) Download 5.00KB LTspice LTC3769 - Step-Up (Boost) Regulators, LT8551 - Step-Up (Boost) Regulators Download 15.56 KB
Part Models 20
1ku List Price Starting From $3.31
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LTC3769

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Data Sheet

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UPDATED 09/24/2015
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LTC3769: 60V Low IQ Synchronous Boost Controller Data Sheet (Rev.B)

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UPDATED 09/26/2014
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LTC3769: 低静止電流の60V同期整流式昇圧コントローラ データシート

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User Guide

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UPDATED 09/12/2014
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DC2173A - Demo Manual (Rev.B) redirect icon

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Reliability Data

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Design Note

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UPDATED 05/01/2020
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Multiply the Power of a Boost Converter with a Versatile Phase Expander redirect icon

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UPDATED 05/01/2020
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使用多功能相位扩展器翻倍提高升压转换器的功率 redirect icon

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UPDATED 05/01/2020
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多用途フェーズ・エクスパンダによる昇圧コンバータの電力増幅 redirect icon

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UPDATED 04/01/2020
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Bipolar, Bidirectional DC-to-DC Supply Sources and Sinks Current from 5 V to 24 V Input redirect icon

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通过5 V至24 V输入提供双极性、双向DC-DC流入和流出电流 redirect icon

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バイポーラ双方向DC-DC電源が5V～24V入力の電流をソース／シンク redirect icon

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Documentation

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2017-09-18

LTC3769 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
LTC3769EFE#PBF 20-Lead TSSOP w/ EP external-link
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LTC3769EFE#TRPBF 20-Lead TSSOP w/ EP external-link
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LTC3769EUF#PBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769EUF#TRPBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769HFE#PBF 20-Lead TSSOP w/ EP external-link
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LTC3769HFE#TRPBF 20-Lead TSSOP w/ EP external-link
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LTC3769HUF#PBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769HUF#TRPBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769HUF#WPBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769HUF#WTRPBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769IFE#PBF 20-Lead TSSOP w/ EP external-link
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LTC3769IFE#TRPBF 20-Lead TSSOP w/ EP external-link
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LTC3769IUF#PBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769IUF#TRPBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769IUF#WPBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769IUF#WTRPBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769MPFE#PBF 20-Lead TSSOP w/ EP external-link
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LTC3769MPFE#TRPBF 20-Lead TSSOP w/ EP external-link
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LTC3769MPUF#PBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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LTC3769MPUF#TRPBF 24-Lead QFN (4mm x 4mm x 0.75mm w/ EP) external-link
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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

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Jan 20, 2022

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Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

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Laser Top Mark for ETSSOP and TSSOP Packages Assembled in ADPG [PNG] and UTL

LTC3769EFE#PBF

PRODUCTION

LTC3769EFE#TRPBF

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PCN22_0068_Form

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Material_Report

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Delta Qualification Matrix

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Jan 20, 2022

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Addition of Alternate Assembly Site ASE Taiwan for Select LFCSP Products

LTC3769EUF#PBF

PRODUCTION

LTC3769EUF#TRPBF

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LTC3769HUF#PBF

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LTC3769HUF#TRPBF

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LTC3769IUF#PBF

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LTC3769IUF#TRPBF

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LTC3769MPUF#PBF

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LTC3769MPUF#TRPBF

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Software & Part Ecosystem

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Evaluation Kits 1

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DC2173A

LTC3769IUFD Demo Board | Sync Boost, 6V ≤ VIN ≤ 48V, VOUT= 48V @ 1.5A to 6A

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DC2173A

LTC3769IUFD Demo Board | Sync Boost, 6V ≤ VIN ≤ 48V, VOUT= 48V @ 1.5A to 6A

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DC2173A
LTC3769IUFD Demo Board | Sync Boost, 6V ≤ VIN ≤ 48V, VOUT= 48V @ 1.5A to 6A
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Product Detail

Demonstration circuit DC2173A is a DC/DC synchronous boost converter featuring the LTC3769 constant frequency current mode synchronous boost controller. The DC2173A generates a 48V output voltage and provides 1.5A to 6A of output current.

Resources

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DC2173A - Schematic Download

61.00K

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DC2173A - Demo Manual (Rev.B) Download

363.79 K

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DC2173A - Design Files Download

1.00M

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Evaluation Kits1

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DC2173A

LTC3769IUFD Demo Board | Sync Boost, 6V ≤ VIN ≤ 48V, VOUT= 48V @ 1.5A to 6A

Tools & Simulations 2

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.

spice tool Lt Spice

LTC3769 - Step-Up (Boost) Regulators Download

2.95 K

spice tool Lt Spice

LTC3769 Demo Circuit - High Voltage 60V Synchronous Boost Controller (6-55V to 48V @ 1A) Download

5.00K

spice tool Lt Spice

LTC3769 - Step-Up (Boost) Regulators, LT8551 - Step-Up (Boost) Regulators Download

15.56 K

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