Datasheet > UC3844

UC3844

更新时间： 2024-01-26 04:45:22

品牌	Logo	应用领域
友顺 - UTC		控制器
页数	文件大小	规格书
7页	299K
描述
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

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中文翻译

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技术参数
数据手册

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UC3844 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：	5.65
Is Samacsys：	N	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

UC3844 数据手册

UNISONIC TECHNOLOGIES CO., LTD

UC3844/45

LINEAR INTEGRATED CIRCUIT

HIGH PERFORMANCE

CURRENT MODE PWM

CONTROLLERS

DESCRIPTION

The UTC UC3844/3845 are high performance fixed frequency

current mode controllers that specifically designed for Off-Line and

DC to DC converter applications with minimal external parts count.

The differences between UC3844 and UC3845 are the maximum

duty cycle ranges and under-voltage lockout thresholds. The

UC3844 ideally suited to off-line applications with UVLO thresholds

of 16V_(ON)and 10V_(OFF), and UC3845 has UVLO thresholds of

8.5V_(ON)and 7.6V_(OFF)for lower voltage applications.

*Pb-free plating product number:

UC3844L/UC3845L

FEATURES

* Operation output switching frequency up to 500 kHz

* Output deadtime adjustable from 50% to 70%

* Automatic feed forward compensation

* Latching PWM for cycle-by-cycle current limiting

* High current totem pole output

* Internally trimmed reference with under voltage lockout

* UVLO with hysteresis

* Low startup and operating current

ORDERING INFORMATION

Order Number

Package

Packing

Normal

Lead Free Plating

UC3844-D08-T

UC3844-S08-R

UC3844-S08-T

UC3845-D08-T

UC3845-S08-R

UC3845-S08-T

UC3844L-D08-T

UC3844L-S08-R

UC3844L-S08-T

UC3845L-D08-T

UC3845L-S08-R

UC3845L-S08-T

DIP-8

SOP-8

DIP-8

Tube

Tape Reel

Tube

SOP-8

Tape Reel

Tube

www.unisonic.com.tw

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QW-R103-010,C

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中文翻译

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与UC3844相关器件

型号	品牌	获取价格	描述	数据表
UC3844 UC3845	UTC	获取价格	PWM Controllers with Low Start-Up Current
UC3844/D	ETC	获取价格	High Performance Current Mode Controller
UC3844_06	ONSEMI	获取价格	High Performance Current Mode Controllers
UC3844_11	UTC	获取价格	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC3844_13	UTC	获取价格	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC3844A	STMICROELECTRONICS	获取价格	HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER
UC3844A	MICROSEMI	获取价格	CURRENT MODE PWM CONTROLLER
UC3844A	TI	获取价格	Current Mode PWM Controller
UC3844A	FCI	获取价格	High Performance Current Mode Controller
UC3844A-BW	FCI	获取价格	Current Mode PWM Controller Low Start-Up and Operating Current