LTC7801
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LTC7801

150V Low IQ, Synchronous Step-Down DC/DC Controller

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LTspice LTC7801 - Step-Down (Buck) Regulators Download 4.25 KB
Part Models 12
1ku List Price Starting From $5.02
Features
  • Wide VIN Range: 4V to 140V (150V Abs Max)
  • Wide Output Voltage Range: 0.8V to 60V
  • Adjustable Gate Drive Level: 5V to 10V (OPTI-DRIVE)
  • Low Operating IQ: 40μA (Shutdown = 10μA)
  • 100% Duty Cycle Operation
  • Integrated Bootstrap Diode
  • Selectable Gate Drive UVLO Thresholds
  • Onboard LDO or External NMOS LDO for DRVCC
  • EXTVCC LDO Powers Drivers from VOUT
  • Phase-Lockable Frequency (75kHz to 850kHz)
  • Programmable Fixed Frequency (50kHz to 900kHz)
  • Selectable Continuous, Pulse-Skipping or Low Ripple Burst Mode® Operation at Light Loads
  • Adjustable Burst Clamp
  • Power Good Output Voltage Monitor
  • Programmable Input Overvoltage Lockout
  • Small 24-Lead 4mm × 5mm QFN or TSSOP Packages
Additional Details
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The LTC7801 is a high performance step-down switching regulator DC/DC controller that drives an all N-channel synchronous power MOSFET stage that can operate from input voltages up to 140V. A constant frequency current mode architecture allows a phase-lockable frequency of up to 850kHz.

The gate drive voltage can be programmed from 5V to 10V to allow the use of logic or standard-level FETs to maximize efficiency. An integrated switch in the top gate driver eliminates the need for an external bootstrap diode. An internal charge pump allows for 100% duty cycle operation.

The low 40μA no-load quiescent current extends operating run time in battery-powered systems. OPTI-LOOP® compensation allows the transient response to be optimized over a wide range of output capacitance and ESR values. The LTC7801 features a precision 0.8V reference and power good output indicator. The output voltage can be programmed between 0.8V to 60V using external resistors.

APPLICATIONS

  • Automotive and Industrial Power Systems
  • High Voltage Battery Operated Systems
  • Telecommunications Power Systems
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file View Data Sheet (Rev.A)
Documentation View All Documentation
LTspice LTC7801 - Step-Down (Buck) Regulators Download 4.25 KB
Part Models 12
1ku List Price Starting From $5.02
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LTC7801

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Data Sheet

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UPDATED 12/16/2020
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LTC7801: 150V Low IQ, Synchronous Step-Down DC/DC Controller Data Sheet (Rev.A)

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UPDATED 07/18/2017
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LTC7801: 低静止電流の150V、同期整流式降圧DC/DCコントローラ データシート

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User Guide

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UPDATED 07/05/2017
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DC2641A - Demo Manual redirect icon

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UPDATED 03/26/2018
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Documentation

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
LTC7801EFE#PBF 24-Lead TSSOP w/ EP external-link
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LTC7801EFE#TRPBF 24-Lead TSSOP w/ EP external-link
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LTC7801EUFD#PBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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  • Reliablity Data external-link
LTC7801EUFD#TRPBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
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LTC7801HFE#PBF 24-Lead TSSOP w/ EP external-link
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LTC7801HFE#TRPBF 24-Lead TSSOP w/ EP external-link
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LTC7801HUFD#PBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
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  • Reliablity Data external-link
LTC7801HUFD#TRPBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
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  • Material Declaration external-link
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LTC7801IFE#PBF 24-Lead TSSOP w/ EP external-link
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LTC7801IFE#TRPBF 24-Lead TSSOP w/ EP external-link
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LTC7801IUFD#PBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
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LTC7801IUFD#TRPBF 24-Lead QFN (4mm x 5mm x 0.75mm w/ EP) external-link
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Apr 6, 2022

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

LTC7801EFE#PBF

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LTC7801EFE#TRPBF

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

LTC7801EFE#PBF

PRODUCTION

LTC7801EFE#TRPBF

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LTC7801HFE#PBF

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LTC7801HFE#TRPBF

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LTC7801IFE#PBF

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LTC7801IFE#TRPBF

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Evaluation Kits 1

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DC2641A

LTC7801EUFD Demo Board | Synchronous Buck Controller, 16V ≤ VIN ≤ 100V, VOUT = 12V @ 10A

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DC2641A

LTC7801EUFD Demo Board | Synchronous Buck Controller, 16V ≤ VIN ≤ 100V, VOUT = 12V @ 10A

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DC2641A
LTC7801EUFD Demo Board | Synchronous Buck Controller, 16V ≤ VIN ≤ 100V, VOUT = 12V @ 10A
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Product Detail

Demonstration circuit 2641A is a single output synchronous buck converter featuring the LTC7801EUFD in the 24-lead QFN package. The input voltage range is from 16V to 100V and the output is 12V/10A. The DC2641A is configured with a sense resistor for overcurrent protection. Inductor DCR current sensing is optional.

Resources

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DC2641A - Demo Manual Download

770.00K

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DC2641A - Design Files Download

1.00M

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DC2641A - Schematic Download

42.00K

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Evaluation Kits1

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DC2641A

LTC7801EUFD Demo Board | Synchronous Buck Controller, 16V ≤ VIN ≤ 100V, VOUT = 12V @ 10A

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.

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LTC7801 - Step-Down (Buck) Regulators Download

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