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reference designLTC3376

Analog Devices LTC3376

20V, 4-Channel Buck DC/DC with 8x Configurable 1.5A Power Stages

Overview

TopologyBuck Converter
Input voltage3-20 V
Switching frequency1000-3000 kHz
Output 11.8 V / 4.5 A
Output 21.5 V / 5 A
Output 33.3 V / 3 A
Output 42.5 V / 3 A

Description

The LTC®3376 is a highly flexible multioutput power supply IC. The device includes four synchronous buck converters, configured to share eight 1.5A power stages, powered from independent 3V to 20V inputs. The DC/DCs are assigned to one of fifteen power configurations via pin strappable CFG0 to CFG3 pins. The LTC3376 includes the integration of ceramic capacitors into the package for the BST pins thereby saving PCB space. The common buck switching frequency may be programmed with an external resistor, synchronized to an external oscillator, or set to a default internal 2MHz clock.

Features

  • Wide VIN Range: 3V to 20V
  • Wide VOUT Range: 0.4V to 0.83 - VIN
    1. 1.5A Buck Power Stages Configurable as 1 to 4 Output Channels
  • 15 Unique Pin Selectable Output Configurations (1.5A to 12A per Channel)
  • Internal Boost Capacitors for Reduced PCB Space
  • No Load IQ 27μA 1 Buck Enabled; 42μA All Bucks Enabled
  • 1% VOUT Accuracy on All Channels
  • Peak Current Mode Control (Burst Mode® Operation/Forced Continuous)
  • Precision RUN Inputs, Individual PGOOD Outputs for Power Sequencing
  • 1MHz to 3MHz Frequency (RT Programmable, PLL SYNC, or Internal 2MHz Oscillator)
  • TEMP Pin Output Indicates Die Temperature
  • Output Current Monitors
  • Differential Output Sense

Typical applications

  • Telecom
  • Industrial
  • 12V Distributed Power Systems

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
RDC max.(mΩ)
SamplesAvailability & Sample
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744383360068
SPECWE-MAPI SMT Power Inductor, 0.68 µH, 6.75 A
Simu­lation
Availability
–
Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance0.68 µH
Performance Rated Current6.75 A
Saturation Current @ 30%8.1 A
DC Resistance22 mΩ
Self Resonant Frequency85 MHz
Operating Voltage80 V
MountSMT 
DC Resistance27 mΩ
–Check availability
74438357010
SPECWE-MAPI SMT Power Inductor, 1 µH, 10.25 A

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.

Simu­lation
Availability
–
Downloads10 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance1 µH
Performance Rated Current10.25 A
Saturation Current @ 30%12.5 A
DC Resistance11.6 mΩ
Self Resonant Frequency59 MHz
Operating Voltage80 V
MountSMT 
DC Resistance13.5 mΩ
–Check availability
74439344022
SPECWE-XHMI SMT Power Inductor, 2.2 µH, 10.85 A
Simu­lation
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-XHMI SMT Power Inductor
Inductance2.2 µH
Performance Rated Current10.85 A
Saturation Current @ 30%16.25 A
DC Resistance10.5 mΩ
Self Resonant Frequency37 MHz
Operating Voltage120 V
MountSMT 
DC Resistance11.55 mΩ
–Check availability