ISL6841

Improved Industry-Standard Single-Ended PWM Controller

器件已停止供应、支持、生产。

Product Status: EOL

OVERVIEW

The ISL6840, ISL6841, ISL6842, ISL6843, and ISL6844 (ISL684x) family of adjustable frequency, low power, Pulse-Width Modulating (PWM) current mode controllers is designed for a wide range of power conversion applications including boost, flyback, and isolated output configurations. Peak current mode control effectively handles power transients and provides inherent overcurrent protection.

This advanced BiCMOS design is pin-compatible with the industry standard 384x family of controllers and offers significantly improved performance. Features include low operating current, 60µA 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
  • 60µA start-up current, 100µA maximum
  • 25ns propagation delay current sense to output
  • Fast transient response with peak current mode control
  • 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
  • High bandwidth error amplifier
  • Tight tolerance voltage reference over line, load, and temperature
  • Tight tolerance current limit threshold
  • Pb-free available (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL6841
Basic Information
生产状态
EOL
拓扑
Single-Ended
控制模式
Peak Current Mode
UVLO上升 (V)
7
UVLO下降 (V)
6.6
VBIAS (最大值) (V)
20
无负载工作电流
2.3 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 (%)
50
资质级别
Standard
温度范围
-40 to +85

Action Needed