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reference designLT3952A

Analog Devices LT3952A

60V LED Driver with 4A Switch Current

Overview

TopologyBuck Converter
Input voltage12-40 V
Switching frequency2000-3000 kHz
Output 130 V / 3 A
IC revisionA

Description

The LT®3952A is a current mode step-up DC/DC converter with an internal, 60V, 80mΩ DMOS power switch. The LT3952A is specifically designed to drive high power LEDs in multiple configurations. It combines input and output current regulation loops with output voltage regulation to operate as a flexible current/voltage source.

Features

  • 4000:1 True Color PWM™ Dimming
  • 4A, 60V Internal DMOS Switch
  • Wide Input Voltage Range: 3V to 42V
  • 0V to 60V Output Current Regulation with Monitor
  • PMOS Switch Driver for PWM and Output Disconnect
  • LED Short-Circuit Protection and SHORTLED Flag
  • Internal Spread Spectrum Frequency Modulation

Typical applications

  • Display Backlighting, Automotive and Avionic Lighting
  • Accurate Current-Limited Voltage Regulators

More information

Products

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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
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74437346047
SPECWE-LHMI SMT Power Inductor, 4.7 µH, 5.35 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance4.7 µH
Performance Rated Current5.35 A
Saturation Current @ 10%7.5 A
Saturation Current @ 30%15.5 A
DC Resistance40 mΩ
Self Resonant Frequency22 MHz
MountSMT 
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