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ISL6845IB Datasheet

  • ISL6845IB

  • Improved Industry Standard Single Ended Current Mode PWM Con...

  • 9頁

  • INTERSIL   INTERSIL

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ISL6842, ISL6843, ISL6844, ISL6845
Data Sheet
October 2003
FN9124.1
Improved Industry Standard Single Ended
Current Mode PWM Controller
The ISL6842, ISL6843, ISL6844, ISL6845 family of
adjustable frequency, low power, pulse width modulating
(PWM) current mode controllers is designed for a wide range
of power conversion applications including boost, flyback,
and isolated output configurations. Peak current mode
control effectively handles power transients and provides
inherent over-current protection.
This advanced BiCMOS design is pin compatible with the
industry standard 384x family of controllers and offers
significantly improved performance. Features include low
operating current, 60碌A(chǔ) start-up current, adjustable
operating frequency to 2MHz, and high peak current drive
capability with 20ns rise and fall times.
Features
鈥?1A MOSFET gate driver
鈥?60碌A(chǔ) startup current, 100碌A(chǔ) maximum
鈥?30ns propagation delay current sense to output
鈥?Fast transient response with peak current mode control
鈥?Adjustable switching frequency to 2MHz
鈥?20ns rise and fall times with 1nF output load
鈥?Trimmed timing capacitor discharge current for accurate
deadtime/maximum duty cycle control
鈥?High bandwidth error amplifier
鈥?Tight tolerance voltage reference over line, load, and
temperature
鈥?Tight tolerance current limit threshold
Ordering Information
PART NUMBER
ISL6842IB
ISL6842IU
ISL6843IB
ISL6843IU
ISL6844IB
ISL6844IU
ISL6845IB
ISL6845IU
TEMP. RANGE
(
o
C)
-40 to 105
-40 to 105
-40 to 105
-40 to 105
-40 to 105
-40 to 105
-40 to 105
-40 to 105
PACKAGE
8 Ld SOIC
8 Ld MSOP
8 Ld SOIC
8 Ld MSOP
8 Ld SOIC
8 Ld MSOP
8 Ld SOIC
8 Ld MSOP
PKG.
DWG. #
M8.15
M8.118
M8.15
M8.118
M8.15
M8.118
M8.15
M8.118
Applications
鈥?Telecom and Datacom Power
鈥?Wireless Base Station Power
鈥?File Server Power
鈥?Industrial Power Systems
鈥?PC Power Supplies
鈥?Isolated Buck and Flyback Regulators
鈥?Boost Regulators
Pinout
ISL6842, ISL6843, ISL6844, ISL6845
(8-PIN SOIC, MSOP)
TOP VIEW
COMP 1
FB 2
CS 3
RTCT 4
8 VREF
7 VDD
6 OUT
5 GND
NOTE: Add -T to part number for Tape and Reel packaging.
PART NUMBER
ISL6842
ISL6843
ISL6844
ISL6845
RISING UVLO
14.4V
8.4V
14.4V
8.4V
MAX. DUTY CYCLE
100%
100%
50%
50%
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2003. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.

ISL6845IB 產(chǎn)品屬性

  • 98

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 切換控制器

  • -

  • 電流模式

  • 1

  • 2MHz

  • 50%

  • 9 V ~ 16 V

  • 是

  • 是

  • 是

  • 無

  • 無

  • 無

  • 無

  • 是

  • -40°C ~ 105°C

  • 8-SOIC（0.154"，3.90mm 寬）

  • 管件

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