IC manufacturers Analog Devices

IC manufacturers (103)

Analog Devices LT3922 | Demoboard LT journal

36V, 2A Synchronous Step-Up LED Driver

Overview

TopologyBoost Converter
Input voltage8-27 V
Switching frequency200-2000 kHz
Output 130 V / 0.33 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

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Z @ 100 MHz(Ω)
Zmax(Ω)
Test Condition Zmax
IR 2(mA)
RDC max.(Ω)
Type
SamplesAvailability & Sample
SPECWE-CBF SMT EMI Suppression Ferrite Bead, 600 Ω, 700 Ω
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Impedance @ 100 MHz600 Ω
Maximum Impedance700 Ω
Maximum Impedance150 MHz 
Rated Current 22000 mA
DC Resistance0.15 Ω
TypeHigh Current 
Check availability
SPECWE-CBF SMT EMI Suppression Ferrite Bead, 1500 Ω, 1800 Ω
Simu­lation
Availability
Status Activei| Production is active. Expected lifetime: >10 years.
Impedance @ 100 MHz1500 Ω
Maximum Impedance1800 Ω
Maximum Impedance70 MHz 
Rated Current 21000 mA
DC Resistance0.3 Ω
TypeHigh Current 
Check availability