ISL8840A

High Performance Industry Standard Single-Ended Current Mode PWM Controller

Product Status: Mass Production

OVERVIEW

The ISL884xA is a high performance drop-in replacement for the popular 28C4x and 18C4x 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.

KEY FEATURES

  • 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

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL8840A
Basic Information
生产状态
Mass Production
拓扑
Single-Ended
拓扑特征
Flyback
控制模式
Peak Current Mode
UVLO上升 (V)
7
UVLO下降 (V)
6.6
VBIAS (最大值) (V)
30
无负载工作电流
2.9 mA
PWM输出数量
1
FET驱动器输出电流最大值
1 A
最大占空比 (%)
100
资质级别
Standard
CAN 采样
YES
温度范围
-55 to +125

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