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特性

  • 1A MOSFET gate driver
  • 90µA start-up current, 125µA maximum
  • 35ns propagation delay current sense to output
  • Fast transient response with peak current mode control
  • 30V operation
  • Adjustable switching frequency to 2MHz
  • 20ns rise and fall times with 1nF output load
  • Trimmed timing capacitor discharge current for accurate deadtime/maximum duty cycle control
  • 1.5MHz bandwidth error amplifier
  • Tight tolerance voltage reference over line, load, and temperature
  • ±3% current limit threshold
  • Pb-free plus anneal available and ELV, WEEE, RoHS Compliant

描述

Support is limited to customers who have already adopted these products.

The ISL8843 is an industry standard drop-in replacement for the popular 28C43 and 18C43 PWM controllers suitable for a wide range of power conversion applications including boost, flyback, and isolated output configurations. Its fast signal propagation and output switching characteristics make this an ideal product for existing and new designs. Features include 30V operation, low operating current, 90µA start-up current, adjustable operating frequency to 2MHz, and high peak current drive capability with 20ns rise and fall times.

应用

  • Telecom and datacom power
  • Wireless base station power
  • File server power
  • Industrial power systems
  • PC power supplies
  • Isolated buck and flyback regulators
  • Boost regulators
Part NumberStatusSamplesStockPackageLead Count (#)Carrier TypeMoisture Sensitivity Level (MSL)Pitch (mm)Pkg. Dimensions (mm)Pb (Lead) FreePb Free CategoryMOQTemp. Range (°C)CAGE code
ISL8843ABZObsoleteN/AOut of StockSOICN8#Tube11.3mm4.9 x 3.9 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e31960-40 to +85°C34371
ISL8843ABZ-TObsoleteN/AOut of StockSOICN8#Reel11.3mm4.9 x 3.9 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e32500-40 to +85°C34371
ISL8843AUZObsoleteN/AOut of StockMSOP8#Tube0.7mm3.0 x 3.0 x 0.00No1960-40 to +85°C34371
ISL8843AUZ-TObsoleteN/AOut of StockMSOP8#Reel0.7mm3.0 x 3.0 x 0.00No2500-40 to +85°C34371
ISL8843MBZObsoleteN/AIn StockSOICN8#Tube11.3mm4.9 x 3.9 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e31960-55 to +125°C34371
ISL8843MBZ-TObsoleteN/AOut of StockSOICN8#Reel11.3mm4.9 x 3.9 x 0.00YesPb-Free 100% Matte Tin Plate w/Anneal-e32500-55 to +125°C34371
ISL8843MUZObsoleteN/AOut of StockMSOP8#Tube0.7mm3.0 x 3.0 x 0.00No1960-55 to +125°C34371
ISL8843MUZ-TObsoleteN/AOut of StockMSOP8#Reel0.7mm3.0 x 3.0 x 0.00No2500-55 to +125°C34371
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