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> UC2844AD1
UC2844AD1 PDF预览

UC2844AD1

更新时间： 2024-11-22 22:15:43
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 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 172K
描述
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER

阅读下载

中文翻译

获取价格

UC2844AD1 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：SOP, SOP8,.25
针数：8Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.1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最小输入电压：11.5 V
标称输入电压：15 VJESD-30 代码：R-PDSO-G8
JESD-609代码：e0长度：4.9 mm
功能数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-25 °C
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：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：NOT SPECIFIED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：OTHER端子面层：TIN LEAD
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：NOT SPECIFIED
宽度：3.9 mmBase Number Matches：1

UC2844AD1 数据手册

 浏览型号UC2844AD1的Datasheet PDF文件第2页浏览型号UC2844AD1的Datasheet PDF文件第3页浏览型号UC2844AD1的Datasheet PDF文件第4页浏览型号UC2844AD1的Datasheet PDF文件第5页浏览型号UC2844AD1的Datasheet PDF文件第6页浏览型号UC2844AD1的Datasheet PDF文件第7页 
UC284XA  
UC384XA  
HIGH PERFORMANCE CURRENT MODE PWM CONTROLLER  
NOT FOR NEW DESIGN  
1
FEATURES  
Figure 1. Package  
■ TRIMMED OSCILLATOR DISCHARGE  
CURRENT  
■ CURRENT MODE OPERATION TO 500kHz  
AUTOMATIC FEED FORWARD  
COMPENSATION  
DIP-8  
SO-8  
■ LATCHING PWM FOR CYCLE-BY-CYCLE  
CURRENT LIMITING  
■ INTERNALLY TRIMMED REFERENCE WITH  
UNDERVOLTAGE LOCKOUT  
■ HIGH CURRENT TOTEM POLE OUTPUT  
UNDERVOLTAGE LOCKOUT WITH  
HYSTERESIS  
■ LOW START-UP CURRENT (< 0.5mA)  
DOUBLE PULSE SUPPRESSION  
Table 1. Order Codes  
Part Number  
Package  
UC2842AD1; UC3842AD1;  
UC2843AD1; UC3843AD1;  
UC2844AD1; UC3844AD1;  
UC2845AD1; UC3845AD1  
SO-8  
DIP-8  
UC2842AN; UC3842AN;  
UC2843AN; UC3843AN;  
UC2844AN; UC3844AN;  
UC2845AN; UC3845AN  
2
DESCRIPTION  
The UC384xA family of control ICs provides the  
necessary features to implement off-line or DC to  
DC fixed frequency current mode control schemes  
with a minimal external parts count. Internally im-  
plemented circuits include a trimmed oscillator for  
precise DUTY CYCLE CONTROL under voltage  
lockout featuring start-up current less than 0.5mA,  
a precision reference trimmed for accuracy at the  
error amp input, logic to insure latched operation,  
a PWM comparator which also provides current  
limit control, and a totem pole output stage de-  
signed to source or sink high peak current. The  
output stage, suitable for driving N-Channel MOS-  
FETs, is low in the off-state.  
Differences between members of this family are  
the under-voltage lockout thresholds and maxi-  
mum duty cycle ranges. The UC3842A and  
UC3844A have UVLO thresholds of 16V (on) and  
10V (off), ideally suited off-line applications The  
corresponding thresholds for the UC3843A and  
UC3845A are 8.5 V and 7.9V. The UC3842A and  
UC3843A can operate to duty cycles approaching  
100%. A range of the zero to < 50 % is obtained by  
the UC3844A and UC3845A by the addition of an  
internal toggle flip flop which blanks the output off  
every other clock cycle.  
Figure 2. Block Diagram (toggle flip flop used only in UC3844A and UC3845A)  
7
Vi  
UVLO  
34V  
8
6
5V  
REF  
VREF  
5V 50mA  
5
S/R  
GROUND  
INTERNAL  
BIAS  
2.50V  
VREF GOOD  
LOGIC  
OUTPUT  
4
RT/CT  
OSC  
ERROR AMP.  
T
2R  
+
-
S
2
1
3
VFB  
R
PWM  
LATCH  
R
1V  
COMP  
CURRENT  
SENSE  
CURRENT  
SENSE  
COMPARATOR  
D95IN331  
REV. 5  
1/16  
May 2004  
1234567...16

中文翻译

下载PDF

与UC2844AD1相关器件

型号 品牌 获取价格 描述 数据表
UC2844AD1013TR STMICROELECTRONICS

获取价格

 		1A SWITCHING CONTROLLER, 500kHz SWITCHING FREQ-MAX, PDSO8, SO-8
UC2844AD8 TI

获取价格

 		Current Mode PWM Controller
UC2844AD8G4 TI

获取价格

 		Current Mode PWM Controller
UC2844AD8TR TI

获取价格

 		Current Mode PWM Controller
UC2844AD8TRG4 TI

获取价格

 		Current Mode PWM Controller
UC2844ADG4 TI

获取价格

 		Current Mode PWM Controller
UC2844ADM MICROSEMI

获取价格

 		CURRENT MODE PWM CONTROLLER
UC2844ADMT ETC

获取价格

 		Current-Mode SMPS Controller
UC2844ADM-TR MICROSEMI

获取价格

 		Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8, ROHS CO
UC2844ADT ETC

获取价格

 		Current-Mode SMPS Controller

与UC2844AD1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