1
FN6471.2
ISL8840AM, ISL8841AM, ISL8842AM,
ISL8843AM, ISL8844AM, ISL8845AM
Enhanced Product (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.
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
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 Notificatio n
• Enhanced Obsolescence Management
• Eliminates Need for Up-Screening a COTS Component
• 1A MOSFET Gate Driver
• 90µA St art-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
• T rimmed T iming 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
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
COMP
FB
RTCT
VREF
VDD
OUT
GND
1
2
3
4
8
CS
7
6
5
Data Sheet November 17, 2011
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 |Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2007, 2008, 2011. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
2FN6471.2
November 17, 2011
ISL8840AM, ISL8841AM, ISL8842AM, ISL8843AM, ISL8844AM, ISL8845AM
Ordering Information
VENDOR PART NUMBER
(Notes 1, 2) VENDOR ITEM DRAWING
NUMBER PART MARKING TEMPERATURE RANGE
(°C) PACKAGE PKG.
DWG. #
ISL8840AMBEP V62/07621-01XB 8840A MBEP -55 to +125 8 Ld SOIC M8.15
ISL8841AMBEP V62/07621-02XB 8841A MBEP -55 to +125 8 Ld SOIC M8.15
ISL8842AMBEP V62/07621-03XB 8842A MBEP -55 to +125 8 Ld SOIC M8.15
ISL8843AMBEP V62/07621-04XB 8843A MBEP -55 to +125 8 Ld SOIC M8.15
ISL8844AMBEP V62/07621-05XB 8844A MBEP -55 to +125 8 Ld SOIC M8.15
ISL8845AMBEP V62/07621-06XB 8845A MBEP -55 to +125 8 Ld SOIC M8.15
NOTES:
1. Add -TK suffix for 1,000 piece quantity tape and reel.
2. Devices must be procured to the VENDOR PART NUMBER.
3
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No lice nse is gran t ed by i mpli catio n or other wise u nder an y p a tent or patent righ t s of Int ersi l or it s sub sidi ari es.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN6471.2
November 17, 2011
ISL8840AM, ISL8841AM, ISL8842AM, ISL8843AM, ISL8844AM, ISL8845AM
Small Outline Plastic Packages (SOIC)
INDEX
AREA E
D
N
123
-B-
0.25(0.010) C AMBS
e
-A-
L
B
M
-C-
A1
A
SEATING PLANE
0.10(0.004)
h x 45°
C
H0.25(0.010) BM M
α
NOTES:
1. Symbols are defined in the “MO Series Symbol List” in Section 2.2 of
Publication Number 95.
2. Dimensioning and tolerancing per ANSI Y14.5M-1982.
3. Dimension “D” does not include mold flash, protrusions or gate burrs.
Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006
inch) per side.
4. Dimension “E” does not include interlead flash or protrusions. Inter-
lead flash and protrusions shall not exceed 0.25mm (0.010 inch) per
side.
5. The chamfer on the body is optional. If it is not present, a visual index
feature must be located within the crosshatched area.
6. “L” is the length of terminal for soldering to a substrate.
7. “N” is the number of terminal positions.
8. Terminal numbers are shown for reference only.
9. The lead width “B”, as measured 0.36mm (0.014 inch) or greater
above the seating plane, shall not exceed a maximum value of
0.61mm (0.024 inch).
10. Controlling dimension: MILLIMETER. Converted inch dimensions
are not necessarily exact.
M8.15 (JEDEC MS-012-AA ISSUE C)
8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE
SYMBOL
INCHES MILLIMETERS
NOTESMIN MAX MIN MAX
A 0.0532 0.0688 1.35 1.75 -
A1 0.0040 0.0098 0.10 0.25 -
B 0.013 0.020 0.33 0.51 9
C 0.0075 0.0098 0.19 0.25 -
D 0.1890 0.1968 4.80 5.00 3
E 0.1497 0.1574 3.80 4.00 4
e 0.050 BSC 1.27 BSC -
H 0.2284 0.2440 5.80 6.20 -
h 0.0099 0.0196 0.25 0.50 5
L 0.016 0.050 0.40 1.27 6
N8 87
α0° 8° 0° 8° -
Rev. 1 6/05
