5秒后页面跳转
捷配首页

Datasheet > UC2844D
UC2844D PDF预览

UC2844D

更新时间： 2024-11-26 08:26:27
品牌 Logo 应用领域
飞思卡尔 - FREESCALE 开关光电二极管控制器
页数 文件大小 规格书
14页 380K
描述
HIGH PERFORMANCE CURRENT MODE CONTROLLERS

阅读下载

中文翻译

获取价格

UC2844D 数据手册

 浏览型号UC2844D的Datasheet PDF文件第2页浏览型号UC2844D的Datasheet PDF文件第3页浏览型号UC2844D的Datasheet PDF文件第4页浏览型号UC2844D的Datasheet PDF文件第5页浏览型号UC2844D的Datasheet PDF文件第6页浏览型号UC2844D的Datasheet PDF文件第7页 
Order this document by UC3844/D  
HIGH PERFORMANCE  
CURRENT MODE  
CONTROLLERS  
The UC3844, UC3845 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  
an oscillator, 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,  
a latch for single pulse metering, and a flip–flop which blanks the output off  
every other oscillator cycle, allowing output deadtimes to be programmed for  
50% to 70%.  
N SUFFIX  
PLASTIC PACKAGE  
CASE 626  
8
1
D SUFFIX  
These devices are available in an 8–pin dual–in–line 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 UCX844 has UVLO thresholds of 16 V (on) and 10 V (off), ideally  
suited for off–line converters. The UCX845 is tailored for lower voltage  
applications having UVLO thresholds of 8.5 V (on) and 7.6 V (off).  
PLASTIC PACKAGE  
14  
CASE 751A  
(SO–14)  
1
PIN CONNECTIONS  
• Current Mode Operation to 500 kHz Output Switching Frequency  
• Output Deadtime Adjustable from 50% to 70%  
• Automatic Feed Forward Compensation  
• Latching PWM for Cycle–By–Cycle Current Limiting  
• Internally Trimmed Reference with Undervoltage Lockout  
• High Current Totem Pole Output  
• Input Undervoltage Lockout with Hysteresis  
• Low Startup and Operating Current  
• Direct Interface with Motorola SENSEFET Products  
Compensation  
Voltage Feedback  
Current Sense  
1
2
8
7
V
ref  
V
CC  
3
4
6
5
Output  
Gnd  
R
/C  
T
T
(Top View)  
1
14  
13  
Compensation  
NC  
V
ref  
2
NC  
3
4
12  
11  
Voltage Feedback  
NC  
V
V
CC  
C
5
6
10  
9
Current Sense  
NC  
Output  
Gnd  
Simplified Block Diagram  
R
/C  
7
8
Power Ground  
T
T
V
7(12)  
CC  
(Top View)  
V
V
CC  
ref  
8(14)  
5.0V  
Reference  
Undervoltage  
Lockout  
ORDERING INFORMATION  
Operating  
R
R
V
ref  
V
C
Undervoltage  
Lockout  
Temperature Range  
Device  
Package  
SO–14  
SO–14  
Plastic  
Plastic  
SO–14  
SO–14  
Plastic  
Plastic  
7(11)  
UC3844D  
UC3845D  
UC3844N  
UC3845N  
UC2844D  
UC2845D  
UC2844N  
UC2845N  
R
4(7)  
C
Output  
6(10)  
T
T
Flip  
Flop  
&
Latching  
PWM  
Oscillator  
T
= 0° to +70°C  
A
Voltage  
Feedback  
PWR GND  
5(8)  
+
–
2(3)  
Current  
Sense  
3(5)  
Error  
Amplifier  
1(1)  
Output  
Comp.  
T
= – 25° to +85°C  
A
Gnd  
5(9)  
Pin numbers in parenthesis are for the D suffix SO–14 package.  
Motorola, Inc. 1996  
Rev 1  
1234567...14

中文翻译

下载PDF

与UC2844D相关器件

型号 品牌 获取价格 描述 数据表
UC2844D8 TI

获取价格

 		Current Mode PWM Controller
UC2844D8G4 TI

获取价格

 		CURRENT MODE PWM CONTROLLER
UC2844D8TR TI

获取价格

 		Current Mode PWM Controller
UC2844D8TRG4 TI

获取价格

 		CURRENT MODE PWM CONTROLLER
UC2844DG ONSEMI

获取价格

 		High Performance Current Mode Controllers
UC2844DG ROCHESTER

获取价格

 		1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO14, LEAD FREE, PLASTIC, SOIC-14
UC2844DG4 TI

获取价格

 		CURRENT MODE PWM CONTROLLER
UC2844DR ROCHESTER

获取价格

 		1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO14, GREEN, PLASTIC, MS-012AB, SO
UC2844DR2 ONSEMI

获取价格

 		High Performance Current Mode Controllers
UC2844DR2 ROCHESTER

获取价格

 		1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, SOIC-14

与UC2844D相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证