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> UC3845DG
UC3845DG PDF预览

UC3845DG

更新时间： 2024-11-23 04:48:15
品牌 Logo 应用领域
安森美 - ONSEMI 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
16页 617K
描述
High Performance Current Mode Controllers

阅读下载

中文翻译

获取价格

UC3845DG 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SOIC包装说明：LEAD FREE, PLASTIC, SOIC-14
针数：14Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.55Is 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：25 V
最小输入电压：8.2 V标称输入电压：15 V
JESD-30 代码：R-PDSO-G14JESD-609代码：e3
长度：8.65 mm湿度敏感等级：1
功能数量：1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：1 A封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP14,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1.75 mm子类别：Switching Regulator or Controllers
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端子面层：Tin (Sn)
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：3.9 mmBase Number Matches：1

UC3845DG 数据手册

 浏览型号UC3845DG的Datasheet PDF文件第2页浏览型号UC3845DG的Datasheet PDF文件第3页浏览型号UC3845DG的Datasheet PDF文件第4页浏览型号UC3845DG的Datasheet PDF文件第5页浏览型号UC3845DG的Datasheet PDF文件第6页浏览型号UC3845DG的Datasheet PDF文件第7页 
UC3844, UC3845, UC2844,  
UC2845  
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 dead  
times to be programmed for 50% to 70%.  
http://onsemi.com  
PDIP−8  
N SUFFIX  
CASE 626  
8
1
SOIC−14  
D SUFFIX  
CASE 751A  
14  
1
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.  
SOIC−8  
D1 SUFFIX  
CASE 751A  
8
1
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).  
PIN CONNECTIONS  
Compensation  
1
2
8
7
V
ref  
Voltage Feedback  
V
CC  
Features  
3
4
6
5
Current Sense  
R /C  
Output  
GND  
• Current Mode Operation to 500 kHz Output Switching Frequency  
• Output Deadtime Adjustable from 50% to 70%  
• Automatic Feed Forward Compensation  
T
T
(Top View)  
• 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 ON Semiconductor SENSEFETt Products  
• Pb−Free Packages are Available  
1
14  
13  
Compensation  
NC  
V
ref  
2
NC  
V
3
4
12  
11  
Voltage Feedback  
NC  
CC  
V
C
5
6
10  
9
Current Sense  
NC  
Output  
V
CC  
7(12)  
GND  
R /C  
T
7
8
Power Ground  
T
V
ref  
8(14)  
V
CC  
Undervoltage  
Lockout  
5.0V  
Reference  
(Top View)  
R
R
V
ref  
V
C
Undervoltage  
Lockout  
7(11)  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 14 of this data sheet.  
R C  
T
Output  
6(10)  
T
Flip  
Flop  
&
Oscillator  
4(7)  
Voltage  
Feedback  
PWR GND  
5(8)  
Latching  
PWM  
+
−
DEVICE MARKING INFORMATION  
See general marking information in the device marking  
section on page page 14 of this data sheet.  
2(3)  
Current  
Sense  
3(5)  
Error  
Amplifier  
1(1)  
Output  
Comp.  
GND 5(9)  
Pin numbers in parenthesis are for the D suffix SOIC−14 package.  
Figure 1. Simplified Block Diagram  
© Semiconductor Components Industries, LLC, 2006  
1
Publication Order Number:  
July, 2006 − Rev. 7  
UC3844/D  
1234567...16

中文翻译

下载PDF

UC3845DG 替代型号

型号 品牌 替代类型 描述 数据表
UC2845N TI

功能相似

 CURRENT MODE PWM CONTROLLER
UC3845D TI

功能相似

 Current Mode PWM Controller
UC2845D TI

功能相似

 Current Mode PWM Controller

与UC3845DG相关器件

型号 品牌 获取价格 描述 数据表
UC3845DG4 TI

获取价格

 		CURRENT MODE PWM CONTROLLER
UC3845DR TI

获取价格

 		1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO14, PLASTIC, MS-012AB, SOIC-14
UC3845DR2 ONSEMI

获取价格

 		High Performance Current Mode Controllers
UC3845DR2G ONSEMI

获取价格

 		High Performance Current Mode Controllers
UC3845DTR ROCHESTER

获取价格

 		1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO14, GREEN, PLASTIC, MS-012AB, SOIC
UC3845DTR TI

获取价格

 		Current Mode PWM Controller
UC3845DTRG4 TI

获取价格

 		CURRENT MODE PWM CONTROLLER
UC3845G-D08-T UTC

获取价格

 		HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC3845G-S08-R UTC

获取价格

 		HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS
UC3845G-S08-T UTC

获取价格

 		HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS

与UC3845DG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