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IC manufacturers (103)

ISSI IS31LT3354 | Demoboard IS31LT3354

IS31LT3354 Evaluation Board Guide

Overview

TopologyBuck Converter
Input voltage6-40 V
Switching frequency1000 kHz
Output 12 A
IC revision1.0

Description

The IS31LT3354 is a continuous mode inductivestep-down converter, designed for driving a single LEDor multiple series connected LEDs efficiently from avoltage source higher than the required LED voltage.The device operates from an input supply between 6Vand 40V and provides an externally adjustable outputcurrent of up to 2A or even higher, which is determinedby the external MOSFET and inductor

Features

 Simple low parts count

  • Wide input voltage range: 6V to 40V
  • Output Current only limited by external componentselection
  • High efficiency (up to 98% )
  • Typical 1200:1 dimming ratio
  • Typical 5% output current accuracy
  • Single pin on/off and brightness control using DCvoltage or PWM
  • Up to 1MHz switching frequency
  • Inherent open-circuit LED protection
  • Thermal shutdown protection circuitry

Typical applications

  • Low voltage industrial lighting
  • Automotive lighting
  • Illuminated sign
  • LED back-up lighting
  • Low voltage halogen replacement LEDs

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
ISAT,10%(A)
ISAT,30%(A)
IR,40K(A)
IRP,40K(A)
RDC max.(mΩ)
fres(MHz)
Size
Version
Samples
WE-PD SMT Power Inductor, 47 µH, 3.3 A
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Inductance47 µH
Saturation Current @ 10%3.3 A
Saturation Current @ 30%4.3 A
Rated Current3 A
Performance Rated Current4.25 A
DC Resistance64 mΩ
Self Resonant Frequency7.9 MHz
Size1280 
VersionStandard