UC3843ADG

更新时间： 2024-02-21 15:58:05

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
18页	360K
描述
High Performance Current Mode Controllers

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技术参数
数据手册

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UC3843ADG 技术参数

生命周期：	Obsolete	包装说明：	DIE,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.64
模拟集成电路 - 其他类型：	SWITCHING CONTROLLER	控制模式：	CURRENT-MODE
控制技术：	PULSE WIDTH MODULATION	最大输入电压：	30 V
JESD-30 代码：	X-XUUC-N8	功能数量：	1
端子数量：	8	最高工作温度：	70 °C
最低工作温度：		最大输出电流：	1 A
标称输出电压：	2.5 V	封装主体材料：	UNSPECIFIED
封装代码：	DIE	封装形状：	UNSPECIFIED
封装形式：	UNCASED CHIP	认证状态：	Not Qualified
最大供电电流 (Isup)：	25 mA	表面贴装：	YES
切换器配置：	SINGLE	最大切换频率：	500 kHz
技术：	BIPOLAR	温度等级：	COMMERCIAL
端子形式：	NO LEAD	端子位置：	UPPER
Base Number Matches：	1

UC3843ADG 数据手册

UC3842A, UC3843A,

UC2842A, UC2843A

High Performance

Current Mode Controllers

The UC3842A, UC3843A series of high performance fixed

frequency current mode controllers 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.

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.

http://onsemi.com

PDIP−8

N SUFFIX

CASE 626

SOIC−14

D SUFFIX

CASE 751A

These devices are available in an 8−pin dual−in−line plastic package

as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14

package has separate power and ground pins for the totem pole output

stage.

The UCX842A has UYLO thresholds of 16 V (on) and 10 V (off),

ideally suited for off−line converters. The UCX843A is tailored for

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

7.6 V (off).

SOIC−8

D1 SUFFIX

CASE 751

PIN CONNECTIONS

Features

• Trimmed Oscillator Discharge Current for Precise Duty Cycle

Control

• Current Mode Operation to 500 kHz

• Automatic Feed Forward Compensation

Compensation

Voltage Feedback

Current Sense

ref

Output

GND

R /C

• Latching PWM for Cycle−By−Cycle Current Limiting

• Internally Trimmed Reference with Undervoltage Lockout

• High Current Totem Pole Output

(Top View)

Compensation

ref

• Undervoltage Lockout with Hysteresis

• Low Startup and Operating Current

• Direct Interface with ON Semiconductor SENSEFET™ Products

• Pb−Free Packages are Available

Voltage Feedback

Current Sense

Output

GND

R /C

Power Ground

(Top View)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 15 of this data sheet.

DEVICE MARKING INFORMATION

See general marking information in the device marking

section on page 16 of this data sheet.

Semiconductor Components Industries, LLC, 2005

Publication Order Number:

November, 2005 − Rev. 8

UC3842A/D

12 3 4 5 6 7...18

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与UC3843ADG相关器件

型号	品牌	描述	获取价格	数据表
UC3843ADG4	TI	Current Mode PWM Controller	获取价格
UC3843ADM	MICROSEMI	CURRENT MODE PWM CONTROLLER	获取价格
UC3843ADMT	ETC	Current-Mode SMPS Controller	获取价格
UC3843ADM-TR	MICROSEMI	Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8, ROHS CO	获取价格
UC3843ADR2	ONSEMI	High Performance Current Mode Controllers	获取价格
UC3843ADR2G	ONSEMI	High Performance Current Mode Controllers	获取价格

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