5秒后页面跳转
捷配首页

Datasheet > 电源电路 > 开关式稳压器或控制器> UC3844BVD1R2G
UC3844BVD1R2G PDF预览

UC3844BVD1R2G

更新时间： 2024-09-23 12:16:55
品牌 Logo 应用领域
安森美 - ONSEMI 控制器
页数 文件大小 规格书
19页 387K
描述
High Performance Current Mode Controllers

阅读下载

中文翻译

获取价格

UC3844BVD1R2G 数据手册

 浏览型号UC3844BVD1R2G的Datasheet PDF文件第2页浏览型号UC3844BVD1R2G的Datasheet PDF文件第3页浏览型号UC3844BVD1R2G的Datasheet PDF文件第4页浏览型号UC3844BVD1R2G的Datasheet PDF文件第5页浏览型号UC3844BVD1R2G的Datasheet PDF文件第6页浏览型号UC3844BVD1R2G的Datasheet PDF文件第7页 
UC3844B, UC3845B,  
UC2844B, UC2845B  
High Performance  
Current Mode Controllers  
The UC3844B, UC3845B series are high performance fixed frequency  
current mode controllers. They are specifically designed for Off−Line  
and dc−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 from 50% to 70%.  
http://onsemi.com  
PDIP−8  
N SUFFIX  
CASE 626  
8
1
These devices are available in an 8−pin dual−in−line and surface  
mount (SOIC−8) 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.  
SOIC−14  
D SUFFIX  
CASE 751A  
14  
1
The UCX844B has UVLO thresholds of 16V (on) and 10V (off), ideally  
suited for off−line converters. The UCX845B is tailored for lower voltage  
applications having UVLO thresholds of 8.5V (on) and 7.6V (off).  
Features  
SOIC−8  
D1 SUFFIX  
CASE 751  
8
1
• Trimmed Oscillator for Precise Frequency Control  
• Oscillator Frequency Guaranteed at 250 kHz  
• Current Mode Operation to 500 kHz Output Switching Frequency  
• Output Deadtime Adjustable from 50% to 70%  
• Automatic Feed Forward Compensation  
PIN CONNECTIONS  
1
2
3
4
8
7
6
5
Compensation  
Voltage Feedback  
Current Sense  
V
ref  
V
CC  
• Latching PWM for Cycle−By−Cycle Current Limiting  
• Internally Trimmed Reference with Undervoltage Lockout  
• High Current Totem Pole Output  
Output  
R /C  
T
GN  
D
T
(Top View)  
• Undervoltage Lockout with Hysteresis  
• Low Startup and Operating Current  
Compensation  
1
2
3
4
5
6
7
14  
13  
12  
11  
10  
9
V
ref  
• These Devices are Pb−Free and are RoHS Compliant  
NC  
Voltage Feedback  
NC  
NC  
• NCV Prefix for Automotive and Other Applications Requiring  
Unique Site and Control Change Requirements; AEC−Q100  
Qualified and PPAP Capable  
V
V
CC  
C
Current Sense  
NC  
Output  
V
CC  
7(12)  
GND  
8
R /C  
T
Power Ground  
T
V
CC  
V
ref  
5.0V  
Reference  
(Top View)  
Undervoltage  
Lockout  
8(14)  
R
R
V
ref  
V
C
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 15 of this data sheet.  
Undervoltage  
Lockout  
7(11)  
Output  
R /C  
T
T
Oscillator  
6(10)  
Power  
Ground  
4(7)  
Latching  
PWM  
DEVICE MARKING INFORMATION  
See general marking information in the device marking  
section on page 16 of this data sheet.  
Voltage  
Feedback  
Input  
5(8)  
2(3)  
1(1)  
Error  
Amplifier  
Current  
Sense Input  
Output/  
Compensation  
3(5)  
GND  
5(9)  
Pin numbers in parenthesis are for the D suffix SOIC-14 package.  
Figure 1. Simplified Block Diagram  
©
Semiconductor Components Industries, LLC, 2012  
1
Publication Order Number:  
December, 2012 − Rev. 11  
UC3844B/D  
1234567...19

中文翻译

下载PDF

UC3844BVD1R2G 替代型号

型号 品牌 替代类型 描述 数据表
UC3844BNG ONSEMI

类似代替

 HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC3845BD1R2G ONSEMI

类似代替

 HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC2844BD1R2G ONSEMI

类似代替

 HIGH PERFORMANCE CURRENT MODE CONTROLLERS

与UC3844BVD1R2G相关器件

型号 品牌 获取价格 描述 数据表
UC3844BVDG ONSEMI

获取价格

 		High Performance Current Mode Controllers
UC3844BVDR2 ONSEMI

获取价格

 		HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC3844BVDR2G ONSEMI

获取价格

 		High Performance Current Mode PWM Controller, SOIC-14 NB, 2500-REEL
UC3844BVN ONSEMI

获取价格

 		HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC3844BVNG ONSEMI

获取价格

 		高性能电流模式 PWM 控制器
UC3844D FAIRCHILD

获取价格

 		SMPS Controller
UC3844D STMICROELECTRONICS

获取价格

 		CURRENTMODE PWM CONTROLLER
UC3844D MOTOROLA

获取价格

 		HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC3844D ONSEMI

获取价格

 		HIGH PERFORMANCE CURRENT MODE CONTROLLERS
UC3844D TI

获取价格

 		Current Mode PWM Controller

与UC3844BVD1R2G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