ISL8843AM
Enhanced Product (EP) High Performance Industry Standard Single-Ended Current Mode PWM Controllers

Key Features

• Specifications per DSCC VID V62/07621
• 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

Description

The ISL884xAMBEP 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 flyback, forward and boost 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.

PART NUMBER	RISING UVLO (V)	MAX. DUTY CYCLE (%)
ISL8840AMBEP	7.0	100
ISL8841AMBEP	7.0	50
ISL8842AMBEP	14.4	100
ISL8843AMBEP	8.4	100
ISL8844AMBEP	14.4	50
ISL8845AMBEP	8.4	50

Device Information
The specifications for an Extended Plastic (EP) device are defined in a Vendor Item Drawing (VID), which is controlled by the Defense Supply Center in Columbus (DSCC). "Hotlinks" to the applicable VID and other supporting application information are provided on our website.

Applications

• Isolated Flyback and Forward Regulators
• Boost Regulators