LTC7801
Info : RECOMMENDED FOR NEW DESIGNS
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LTC7801

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

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
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
Part Models 12
1ku List Price Starting From $5.02

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
LTC7801EFE#PBF
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LTC7801EUFD#PBF
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LTC7801EUFD#TRPBF
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LTC7801HFE#PBF
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LTC7801HUFD#PBF
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LTC7801HUFD#TRPBF
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LTC7801IFE#PBF
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LTC7801IUFD#PBF
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LTC7801IUFD#TRPBF
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Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

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

LTC7801EFE#PBF

PRODUCTION

LTC7801EFE#TRPBF

PRODUCTION

LTC7801HFE#PBF

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LTC7801HFE#TRPBF

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LTC7801IFE#PBF

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LTC7801IFE#TRPBF

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Part Models

Product Lifecycle

PCN

Apr 6, 2022

- 22_0068

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

LTC7801EFE#PBF

PRODUCTION

LTC7801EFE#TRPBF

PRODUCTION

LTC7801HFE#PBF

PRODUCTION

LTC7801HFE#TRPBF

PRODUCTION

LTC7801IFE#PBF

PRODUCTION

LTC7801IFE#TRPBF

PRODUCTION

Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

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

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

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.

Tools & Simulations

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.

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