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ISL8844A PDF Datasheet ( 特性, スペック, ピン接続図 )

部品番号 ISL8844A
部品説明 (ISL8840A - ISL8845A) High Performance Industry Standard Single-Ended Current Mode PWM Controller
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 



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ISL8844A Datasheet, ISL8844A PDF,ピン配置, 機能
®
Data Sheet
ISL8840A, ISL8841A, ISL8842A,
ISL8843A, ISL8844A, ISL8845A
April 18, 2007
FN6320.3
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.
PART NUMBER
ISL8840A
ISL8841A
ISL8842A
ISL8843A
ISL8844A
www.DataSheet4U.com
ISL8845A
RISING UVLO
7.0
7.0
14.4V
8.4V
14.4V
8.4V
MAX. DUTY CYCLE
100%
50%
100%
100%
50%
50%
Pinout
ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A
(8 LD SOIC, MSOP)
TOP VIEW
COMP 1
FB 2
CS 3
RTCT 4
8 VREF
7 VDD
6 OUT
5 GND
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
1 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.

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部品番号部品説明メーカ
ISL8844A

(ISL8840A - ISL8845A) High Performance Industry Standard Single-Ended Current Mode PWM Controller

Intersil Corporation
Intersil Corporation

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