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reference designLT3922 | Demoboard LT journal

Analog Devices LT3922 | Demoboard LT journal

36V, 2A Synchronous Step-Up LED Driver

Overview

TopologyBoost Converter
Input voltage5 V
Switching frequency200-2000 kHz
Output 112 V / 0.5 A

Description

It is an LT Journal, Synchronous, Low EMI LED DriverFeatures Integrated Switches andInternal PWM Dimming

Features

±2% LED Current Regulation±2% Output Voltage Regulation5000:1 PWM Dimming at 100Hz128:1 Internal PWM DimmingSpread-Spectrum Frequency ModulationSilent Switcher® Architecture for Low EMIOperates in Boost, Buck Mode and Buck-Boost Mode2.8V to 36V Input Voltage RangeUp to 34V LED String Voltage2A, 40V Internal Switches200kHz to 2MHz with SYNC FunctionAnalog or Duty Cycle LED Current ControlOpen/Short LED Protection and Fault IndicationThermally Enhanced 28-Pin (4mm × 5mm) QFN

Typical applications

  • Machine Vision
  • Automotive and Industrial Lighting

More information

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
744316470
SPECWE-HCI SMT Flat Wire High Current Inductor, 4.7 µH, 6 A
Simu­lation
Availability
–
Downloads9 files

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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance4.7 µH
Performance Rated Current6 A
Saturation Current @ 10%2.5 A
Saturation Current @ 30%4.7 A
DC Resistance24.5 mΩ
Self Resonant Frequency57 MHz
MaterialSuperflux 
Packaging Unit1500 
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