The ISL884xAMBEPZ 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.

Features

• Full Mil-Temp Electrical Performance from -55°C to +125°C

• Controlled Baseline with One Wafer Fabrication Site and

One Assembly/Test Site

• Full Homogenous Lot Processing in Wafer Fab

• No Combination of Wafer Fabrication Lots in Assembly

• Full Traceability Through Assembly and Test by

Date/Trace Code Assignment

• Enhanced Process Change Notification

• Enhanced Obsolescence Management

• Eliminates Need for Up-Screening a COTS Component

• 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 (RoHS compliant)

Applications

• Isolated Flyback and Forward Regulators

• Boost Regulators