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reference designLTC7801EUFD | Demoboard DC2641A

Analog Devices LTC7801EUFD | Demoboard DC2641A

High Input Voltage Synchronous Buck Converter

Overview

TopologyBuck Converter
Input voltage16-100 V
Switching frequency75-850 kHz
Output 112.24 V / 10 A
IC revision00

Description

Demonstration circuit 2641A is a single output synchronousbuck converter featuring the LTC7801EUFD in the24-lead QFN package. The input voltage range is from16V to 100V and the output is 12V/10A. The DC2641A isconfigured with a sense resistor for over current protection.Inductor DCR current sensing is optional.

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
  • No External Bootstrap Diode Required
  • 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 RippleBurst 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

Typical applications

  • Telecommunications Power Systems
  • High Voltage Battery Operated Systems
  • Automotive and Industrial Power Systems

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
f(mm)
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Wire Type
Pins
Type
Mount
L(mm)
H(mm)
IR(A)
Working Voltage(V (AC))
Operating Temperature
Samples
7443633300
WE-HCF SMT High Current Inductor, –, 33 µH
Simu­lation
Downloads9 files

EDA models: Components ZIP

CAD files ZIP

Electric models ZIP

Download all 9 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCF SMT High Current Inductor
–
Inductance33 µH
Performance Rated Current13.3 A
Saturation Current @ 10%9.5 A
Saturation Current @ 30%11 A
DC Resistance12.54 mΩ
Self Resonant Frequency12 MHz
Wire TypeFlat 
Pins2 
–
MountSMT 
Length20.8 mm
Height13.5 mm
Rated Current12 A
–
Operating Temperature -40 °C up to +125 °C
702935000
WA-SNSR Self-Retaining Spacer, 4.8 mm, –
Simu­lation–
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWA-SNSR Self-Retaining Spacer
Drilling in Panel4.8 mm
–
–
–
–
–
–
–
–
–
–
Length12.7 mm
–
–
–
Operating Temperature -30 °C up to +85 °C
60800213421
WR-PHD Jumper, –, –
Simu­lation–
Downloads3 files

CAD files ZIP

Download all 3 files as zip archive
ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
–
–
–
–
–
–
–
–
Pins2 
–
–
–
–
Rated Current3 A
Working Voltage200 V (AC)
Operating Temperature -25 °C up to +105 °C
62000211121
WR-PHD Pin Header, –, –
Simu­lation–
Downloads7 files

EDA models: Components ZIP

CAD files ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header
–
–
–
–
–
–
–
–
Pins2 
TypeStraight 
MountTHT 
Length4 mm
–
Rated Current2 A
Working Voltage200 V (AC)
Operating Temperature -40 °C up to +105 °C
62000821121
WR-PHD Pin Header, –, –
Simu­lation–
Downloads7 files

EDA models: Components ZIP

CAD files ZIP

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header
–
–
–
–
–
–
–
–
Pins8 
TypeStraight 
MountTHT 
Length8 mm
–
Rated Current2 A
Working Voltage200 V (AC)
Operating Temperature -40 °C up to +105 °C