UC3842N

更新时间： 2024-02-16 22:47:53

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数	文件大小	规格书
12页	129K
描述
SMPS Controller

阅读下载

中文翻译

获取价格

如果您发现信息不准确，欢迎纠错

UC3842N 技术参数

生命周期：	Obsolete	Reach Compliance Code：	unknown
风险等级：	5.83	Is Samacsys：	N
控制模式：	CURRENT-MODE	JESD-30 代码：	R-XDFP-F14
端子数量：	14	最高工作温度：	70 °C
最低工作温度：		最大输出电流：	0.2 A
封装主体材料：	CERAMIC	封装代码：	DFP
封装等效代码：	FL14,.25	封装形状：	RECTANGULAR
封装形式：	FLATPACK	认证状态：	Not Qualified
子类别：	Switching Regulator or Controllers	表面贴装：	YES
最大切换频率：	500 kHz	技术：	BIPOLAR
温度等级：	COMMERCIAL	端子形式：	FLAT
端子节距：	1.27 mm	端子位置：	DUAL
Base Number Matches：	1

www.fairchildsemi.com

UC3842/UC3843/UC3844/UC3845

SMPS Controller

Features

Description

• Low Start up Current

• Maximum Duty Clamp

• UVLO With Hysteresis

• Operating Frequency up to 500KHz

The UC3842/UC3843/UC3844/UC3845 are fixed

frequencycurrent-mode PWM controller. They are specially

designed for Off-Line and DC to DC converter applications

with minimum 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 totempole output for driving a Power MOSFET. The

UC3842 and UC3844 have UVLO thresholds of 16V (on)

and 10V (off). The UC3843 and UC3845 are 8.5V(on) and

7.9V (off). The UC3842 and UC3843 can operate within

100% duty cycle. The UC3844 and UC3845 can operate

with 50% duty cycle.

8-SOP

8-DIP

14-SOP

Internal Block Diagram

* NORMALLY 8DIP/8SOP PIN NO.

* ( ) IS 14SOP PINNO.

* TOGGLE FLIP FLOP USED ONLY IN UC3844, UC3845

Rev. 1.0.1

12 3 4 5 6 7...12

中文翻译

下载PDF

型号	品牌	替代类型	描述	数据表
KA3842B	FAIRCHILD	类似代替	SMPS Controller
UC3842J	TI	类似代替	Current Mode PWM Controller
UC3842AN	STMICROELECTRONICS	类似代替	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

型号	品牌	获取价格	描述	数据表
UC3842NG4	TI	获取价格	CURRENT MODE PWM CONTROLLER
UC3842P	TI	获取价格	Current Mode PWM Controller
UC3842Q	TI	获取价格	1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PQCC20
UC3842QTR	ETC	获取价格	Current-Mode SMPS Controller
UC3842T	STMICROELECTRONICS	获取价格	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC3842TD	STMICROELECTRONICS	获取价格	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC3842TN	ETC	获取价格	Analog IC
UC3842W	TI	获取价格	IC,SMPS CONTROLLER,CURRENT-MODE,BIPOLAR,FP,14PIN,CERAMIC
UC3843	TI	获取价格	Current Mode PWM Controller
UC3843	STMICROELECTRONICS	获取价格	CURRENTMODE PWM CONTROLLER