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ISL6844IBZ Datasheet

  • ISL6844IBZ

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

  • 11頁

  • INTERSIL   INTERSIL

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ISL6840, ISL6841, ISL6842,
ISL6843, ISL6844, ISL6845
Data Sheet
June 28, 2005
FN9124.6
Improved Industry Standard Single-Ended
Current Mode PWM Controller
The ISL6840, ISL6841, 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 overcurrent 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?25ns 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
PART NUMBER
ISL6840
ISL6841
ISL6842
ISL6843
ISL6844
ISL6845
RISING UVLO
7.0
7.0
14.4V
8.4V
14.4V
8.4V
MAX. DUTY CYCLE
100%
50%
100%
100%
50%
50%
鈥?Pb-Free Plus Anneal Available (RoHS Compliant)
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
ISL6840, ISL6841, 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
DFN 8 LEAD
TOP VIEW
COMP
FB
CS
RTCT
1
2
3
4
8
7
6
5
VREF
VDD
OUT
GND
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. 2004, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.

ISL6844IBZ 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%

  • 15 V ~ 18 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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