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reference designLT3964

Analog Devices LT3964

Dual 36V Synchronous 1.6A Buck LED Driver with I2C

Overview

TopologyBuck-Boost Converter
Input voltage6-24 V
Switching frequency186-2140 kHz
Output 126 V / 1 A

Description

The LT®3964 is a dual synchronous step-down DC/DCconverter with I2C interface designed to operate as aconstant-current and constant-voltage source and is idealfor driving LEDs. The fixed frequency and peak currentmode topology result in stable operation over a wide rangeof supply and output voltages.

Features

Wide Input Voltage Range: 4V to 36Vn Two Independent 1.6A/40V Synchronous Bucksn I2C Interface for Internal True Color PWM™ Dimming(8192:1), Analog Dimming and Fault Reportingn 1000:1 External True Color PWM Dimming and10:1 External Analog Dimmingn PMOS Switch Driver for PWM and Output Disconnect

Typical applications

  • Industrial
  • Medical
  • Automotive Lighting
  • Constant-Current, Constant-Voltage Source

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
Mount
SamplesAvailability & Sample
74437349100
SPECWE-LHMI SMT Power Inductor, 10 µH, 4.05 A
Simu­lation
Availability
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance10 µH
Performance Rated Current4.05 A
Saturation Current @ 10%5.6 A
Saturation Current @ 30%10.5 A
DC Resistance69 mΩ
Self Resonant Frequency12 MHz
MountSMT 
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