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ISL8845AABZ

P1-P3P4-P6P7-P9P10-P12P13-P15
1
®
FN6320.3
ISL8840A, ISL8841A, ISL8842A,
ISL8843A, ISL8844A, ISL8845A
High Performance Industry Standard
Single-Ended Current Mode PWM
Controller
The ISL884xA 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.
Pinout
ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A
(8 LD SOIC, MSOP)
TOP VIEW
Features
• 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 plus anneal available and ELV, WEEE, RoHS
Compliant
Applications
• Telecom and datacom power
• Wireless base station power
• File server power
• Industrial power systems
• PC power supplies
• Isolated buck and flyback regulators
• Boost regulators
PART NUMBER RISING UVLO MAX. DUTY CYCLE
ISL8840A 7.0 100%
ISL8841A 7.0 50%
ISL8842A 14.4V 100%
ISL8843A 8.4V 100%
ISL8844A 14.4V 50%
ISL8845A 8.4V 50%
COMP
FB
RTCT
VREF
VDD
OUT
GND
1
2
3
4
8
CS
7
6
5
Data Sheet April 18, 2007
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. 2005, 2006, 2007. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
2
FN6320.3
April 18, 2007
Ordering Information
PART
NUMBER*
PART
MARKING
TEMP.
RANGE (°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL8840AABZ
(See Note)
8840 AABZ -40 to +105 8 Ld SOIC M8.15
ISL8840AAUZ
(See Note)
40AAZ -40 to +105 8 Ld MSOP M8.118
ISL8840AMBZ
(See Note)
8840 AMBZ -55 to +125 8 Ld SOIC M8.15
ISL8840AMUZ
(See Note)
40AMZ -55 to +125 8 Ld MSOP M8.118
ISL8841AABZ
(See Note)
8841 AABZ -40 to +105 8 Ld SOIC M8.15
ISL8841AAUZ
(See Note)
41AAZ -40 to +105 8 Ld MSOP M8.118
ISL8841AMBZ
(See Note)
8841 AMBZ -55 to +125 8 Ld SOIC M8.15
ISL8841AMUZ
(See Note)
41AMZ -55 to +125 8 Ld MSOP M8.118
ISL8842AABZ
(See Note)
8842 AABZ -40 to +105 8 Ld SOIC M8.15
ISL8842AAUZ
(See Note)
42AAZ -40 to +105 8 Ld MSOP M8.118
ISL8842AMBZ
(See Note)
8842 AMBZ -55 to +125 8 Ld SOIC M8.15
ISL8842AMUZ
(See Note)
42AMZ -55 to +125 8 Ld MSOP M8.118
ISL8843AABZ
(See Note)
8843 AABZ -40 to +105 8 Ld SOIC M8.15
ISL8843AAUZ
(See Note)
43AAZ -40 to +105 8 Ld MSOP M8.118
ISL8843AMBZ
(See Note)
8843 AMBZ -55 to +125 8 Ld SOIC M8.15
ISL8843AMUZ
(See Note)
43AMZ -55 to +125 8 Ld MSOP M8.118
ISL8844AABZ
(See Note)
8844 AABZ -40 to +105 8 Ld SOIC M8.15
ISL8844AAUZ
(See Note)
44AAZ -40 to +105 8 Ld MSOP M8.118
ISL8844AMBZ
(See Note)
8844 AMBZ -55 to +125 8 Ld SOIC M8.15
ISL8844AMUZ
(See Note)
44AMZ -55 to +125 8 Ld MSOP M8.118
ISL8845AABZ
(See Note)
8845 AABZ -40 to +105 8 Ld SOIC M8.15
ISL8845AAUZ
(See Note)
45AAZ -40 to +105 8 Ld MSOP M8.118
ISL8845AMBZ
(See Note)
8845 AMBZ -55 to +125 8 Ld SOIC M8.15
ISL8845AMUZ
(See Note)
45AMZ -55 to +125 8 Ld MSOP M8.118
*Add “-T” suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Ordering Information (Continued)
PART
NUMBER*
PART
MARKING
TEMP.
RANGE (°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A
3
FN6320.3
April 18, 2007
Functional Block Diagram
T
Q
Q
ON
150k
100k
V
DD
CS
OUT
FB
RTCT
GND
VREF
PWM
COMPARATOR
RESET
DOMINANT
2.5V
ENABLE
8.4mA
2.9V
1.0V
OSCILLATOR
COMPARATOR
<10ns
+
-
START/STOP
UV COMPARATOR
V
REF
5.00V
+
-
+
-
100mV
ERROR
AMPLIFIER
+
-
VREF
+
-
ON
+
-
S
R
Q
Q
COMP
VREF
UV COMPARATOR
4.65V 4.80V
+
-
A = 0.5
+
-
CLOCK
1.1V
CLAMP
2R
R
VF TOTAL = 1.15V
A
VREF FAULT
OKV
DD
36k
ISL8841A/
ONLY
ISL8844A/
ISL8845A
ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A
P1-P3P4-P6P7-P9P10-P12P13-P15

ISL8845AABZ

Mfr. #:
Buy ISL8845AABZ
Manufacturer:
Renesas / Intersil
Description:
Switching Controllers CUR MODE PWM 50% DC 8 4V UVLO 8LD
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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