ISL8840AMBEP Datasheet, PDF (1/3 Pages) Intersil Corporation – Enhanced Plastic (EP) High Performance Industry Standard Single-Ended Current Mode PWM Controllers

ISL8840AMBEP, ISL8841AMBEP, ISL8842AMBEP,
® _{ISL8843AMBEP, ISL8844AMBEP, ISL8845AMBEP}
Data Sheet
April 2, 2007
FN6471.0
Enhanced Plastic (EP) High Performance
Industry Standard Single-Ended Current
Mode PWM Controllers
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
ISL8840AMBEP
ISL8841AMBEP
ISL8842AMBEP
ISL8843AMBEP
ISL8844AMBEP
ISL8845AMBEP
RISING UVLO
(V)
7.0
7.0
14.4
8.4
14.4
8.4
MAX. DUTY CYCLE
(%)
100
50
100
100
50
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). “Hot-
links” to the applicable VID and other supporting application
information are provided on our website.
Pinout
ISL884XAMBEP
(8 LD SOIC)
TOP VIEW
COMP 1
FB 2
CS 3
RTCT 4
8 VREF
7 VDD
6 OUT
5 GND
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
Applications
• Isolated Flyback and Forward Regulators
• Boost Regulators
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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