Datasheet > ISL8843A

ISL8843A

更新时间： 2023-12-20 18:44:36

品牌	Logo	应用领域
瑞萨 - RENESAS		/
页数	文件大小	规格书
15页	815K
描述
Single-Ended Current Mode PWM Controller with 3% Current Limit and Military Temp Grade Option

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ISL8843A 数据手册

DATASHEET

ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A

High Performance Industry Standard Single-Ended Current Mode PWM Controller

FN6320

Rev 3.00

April 18, 2007

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

Features

• 1A MOSFET gate driver

boost, flyback, and isolated output configurations. Its fast

signal propagation and output switching characteristics

make this an ideal product for existing and new designs.

• 90A start-up current, 125A maximum

• 35ns propagation delay current sense to output

• Fast transient response with peak current mode control

• 30V operation

Features include 30V operation, low operating current, 90A

start-up current, adjustable operating frequency to 2MHz,

and high peak current drive capability with 20ns rise and fall

times.

• Adjustable switching frequency to 2MHz

• 20ns rise and fall times with 1nF output load

PART NUMBER

ISL8840A

ISL8841A

ISL8842A

ISL8843A

ISL8844A

ISL8845A

RISING UVLO

7.0

MAX. DUTY CYCLE

• Trimmed timing capacitor discharge current for accurate

deadtime/maximum duty cycle control

100%

50%

7.0

• 1.5MHz bandwidth error amplifier

14.4V

8.4V

100%

50%

• Tight tolerance voltage reference over line, load and

temperature

• ±3% current limit threshold

14.4V

8.4V

• Pb-free plus anneal available and ELV, WEEE, RoHS

50%

Compliant

Pinout

Applications

ISL8840A, ISL8841A, ISL8842A, ISL8843A, ISL8844A, ISL8845A

• Telecom and datacom power

• Wireless base station power

• File server power

(8 LD SOIC, MSOP)

TOP VIEW

COMP

VREF

VDD

OUT

GND

• Industrial power systems

• PC power supplies

• Isolated buck and flyback regulators

• Boost regulators

RTCT

FN6320 Rev 3.00

April 18, 2007

Page 1 of 15

12 3 4 5 6 7...15

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