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reference designLTC3897-2

Analog Devices LTC3897-2

PolyPhase® Synchronous Boost Controller with Input/Output Protection

Overview

TopologyBoost Converter
Input voltage6-55 V
Switching frequency75-550 kHz
Output 148 V / 4 A

Description

The LT C®3897-2 is a synchronous boost DC/DC controller with surge stopper and ideal diode controller. The boost controller drives two N-channel power MOSFET stages out-of-phase to reduce input and output capacitor requirements, allowing the use of smaller inductors than the single-phase equivalent. Synchronous rectification reduces power loss and eases thermal requirements.

Features

  • Input Supply Range: 4.5V to 65V (Up to 75V Surge)
  • Reverse Input Protection to –40V
  • Inrush Current Control, Overcurrent Protection andOutput Disconnect for Boost Converter
  • Input Voltage Surge Protection with Adjustable Clamp Voltage
  • Onboard Ideal Diode Controller
  • Low Quiescent Current: 55μA
  • 2-Phase Operation Reduces Required Input and Output Capacitance and Noise
  • Output Voltage Up to 60V
  • Adjustable Gate Drive Level 5V to 10V (OPTI-DRIVE)for Logic-Level or Standard Threshold FETs
  • No External Bootstrap Diodes Required
  • 5mm × 9mm QFN-44 Package with High Voltage Pin Spacing

Typical applications

  • Military/Avionics
  • Telecommunications
  • Automotive
  • Industrial

More information

Products

Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)		IRP,40K
(A)		ISAT,10%
(A)		ISAT,30%
(A)		RDC max.
(mΩ)		fres
(MHz)		Wire Type Samples
7443632200SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

9 files

EDA models: Components
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CAD files
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Electric models
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 Active i| Production is active. Expected lifetime: >10 years.WE-HCF SMT High Current Inductor 22 13.8 13 15 11.72 12.5 Flat
Order Code Data­sheet Simu­lation
7443632200SPEC

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Samples
Order Code Data­sheet Simu­lation Downloads Status Product seriesL
(µH)		IRP,40K
(A)		ISAT,10%
(A)		ISAT,30%
(A)		RDC max.
(mΩ)		fres
(MHz)		Wire Type Samples
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