UC2842B

更新时间： 2024-11-04 04:48:19

品牌	Logo	应用领域
安森美 - ONSEMI		开关光电二极管控制器
页数	文件大小	规格书
20页	295K
描述
HIGH PERFORMANCE CURRENT MODE CONTROLLERS

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

UC2842B 数据手册

UC3842B, UC3843B,

UC2842B, UC2843B,

NCV3843BV

High Performance

Current Mode Controllers

http://onsemi.com

The UC3842B, UC3843B series are high performance fixed

frequency current mode controllers. They are specifically designed for

Off–Line and dc–to–dc converter applications offering the designer a

cost–effective solution with minimal external components. These

integrated circuits feature a trimmed oscillator for precise duty cycle

control, a temperature compensated reference, high gain error

amplifier, current sensing comparator, and a high current totem pole

output ideally suited for driving a power MOSFET.

PDIP–8

N SUFFIX

CASE 626

Also included are protective features consisting of input and

reference undervoltage lockouts each with hysteresis, cycle–by–cycle

current limiting, programmable output deadtime, and a latch for single

pulse metering.

SO–8

D1 SUFFIX

CASE 751

These devices are available in an 8–pin dual–in–line and surface

mount (SO–8) plastic package as well as the 14–pin plastic surface

mount (SO–14). The SO–14 package has separate power and ground

pins for the totem pole output stage.

The UCX842B has UVLO thresholds of 16 V (on) and 10 V (off),

ideally suited for off–line converters. The UCX843B is tailored for

lower voltage applications having UVLO thresholds of 8.5 V (on) and

7.6 V (off).

SO–14

D SUFFIX

CASE 751A

PIN CONNECTIONS

• Trimmed Oscillator for Precise Frequency Control

• Oscillator Frequency Guaranteed at 250 kHz

• Current Mode Operation to 500 kHz

Compensation

Voltage Feedback

Current Sense

ref

Output

Gnd

R /C

• Automatic Feed Forward Compensation

• Latching PWM for Cycle–By–Cycle Current Limiting

• Internally Trimmed Reference with Undervoltage Lockout

• High Current Totem Pole Output

(Top View)

Compensation

ref

Voltage Feedback

• Undervoltage Lockout with Hysteresis

• Low Startup and Operating Current

Current Sense

Output

7(12)

Gnd

R /C

Power Ground

ref

5.0V

Reference

Undervoltage

Lockout

(Top View)

8(14)

ref

Undervoltage

Lockout

ORDERING INFORMATION

See detailed ordering and shipping information in the package

7(11)

dimensions section on page 16 of this data sheet.

R /C

Output

Oscillator

6(10)

4(7)

Latching

PWM

Power

Ground

5(8)

DEVICE MARKING INFORMATION

See general marking information in the device marking

section on page 17 of this data sheet.

Voltage

Feedback

Input

2(3)

Error

Amplifier

Current

Sense

Input

Output

Compensation

3(5)

1(1)

Gnd 5(9)

Pin numbers in parenthesis are for the D suffix SO-14 package.

Figure 1. Simplified Block Diagram

Semiconductor Components Industries, LLC, 2001

Publication Order Number:

December, 2001 – Rev. 3

UC3842B/D

12 3 4 5 6 7...20

中文翻译

下载PDF

与UC2842B相关器件

型号	品牌	获取价格	描述	数据表
UC2842B UC2843B	UTC	获取价格	PWM Controllers with Low Start-Up Current
UC2842BD	MOTOROLA	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC2842BD	ONSEMI	获取价格	High Performance Current Mode Controllers
UC2842BD1	ONSEMI	获取价格	High Performance Current Mode Controllers
UC2842BD1	STMICROELECTRONICS	获取价格	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC2842BD1	MOTOROLA	获取价格	HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC2842BD1013TR	STMICROELECTRONICS	获取价格	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC2842BD1G	ONSEMI	获取价格	High Performance Current Mode Controllers
UC2842BD1R2	ONSEMI	获取价格	High Performance Current Mode Controllers
UC2842BD1R2	MOTOROLA	获取价格	1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO8, PLASTIC, SO-8

与UC2842B相关文章

英伟达新AI芯片Rubin或提前半年亮相
2024-11-05

13
苹果iPhone 17将全系采用三星/LG显示LTPO OLED面板
2024-11-05

7
三星深化印度制造布局，供应链本地化进程加速
2024-10-29

35
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

31

产品中心

服务支持

精选活动

关于我们

帮助中心

UC2842B

UC2842B 数据手册

与UC2842B相关器件

与UC2842B相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

UC2842B

UC2842B 数据手册

与UC2842B相关器件

与UC2842B相关文章

您还可以找

您在本页遇到什么问题？