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UC2874DWTR-2G4 PDF预览

UC2874DWTR-2G4

更新时间： 2024-11-24 15:55:51
品牌 Logo 应用领域
德州仪器 - TI 开关光电二极管
页数 文件大小 规格书
12页 367K
描述
1A SWITCHING CONTROLLER, 300kHz SWITCHING FREQ-MAX, PDSO18, GREEN, SOIC-18

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UC2874DWTR-2G4 技术参数

是否无铅：不含铅是否Rohs认证：符合
生命周期：Obsolete零件包装代码：SOIC
包装说明：GREEN, SOIC-18针数：18
Reach Compliance Code：unknownECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.18
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：36 V最小输入电压：12 V
标称输入电压：12 VJESD-30 代码：R-PDSO-G18
长度：11.55 mm功能数量：1
端子数量：18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：SOP18,.4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：2.65 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：300 kHz
技术：BIPOLAR温度等级：OTHER
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：7.5 mmBase Number Matches：1

UC2874DWTR-2G4 数据手册

 浏览型号UC2874DWTR-2G4的Datasheet PDF文件第2页浏览型号UC2874DWTR-2G4的Datasheet PDF文件第3页浏览型号UC2874DWTR-2G4的Datasheet PDF文件第4页浏览型号UC2874DWTR-2G4的Datasheet PDF文件第5页浏览型号UC2874DWTR-2G4的Datasheet PDF文件第6页浏览型号UC2874DWTR-2G4的Datasheet PDF文件第7页 
UC1874-1,-2  
UC2874-1,-2  
UC3874-1,-2  
High Efficiency, Synchronous, Step-down (Buck) Controllers  
FEATURES  
DESCRIPTION  
•
Operation to 36V Input Voltage  
The UC3874 family of synchronous step-down (Buck) regulators provides  
high efficiency power conversion from an input voltage range of 4.5 to 36  
volts. The UC3874 is tailored for battery powered applications such as  
laptop computers, consumer products, communications systems, and  
aerospace which demand high performance and long battery life. The  
synchronous regulator replaces the catch diode in the standard buck  
regulator with a low Rds(on) N-channel MOSFET switch allowing for  
significant efficiency improvements. The high side N-channel MOSFET  
switch is driven out of phase from the low side N-channel MOSFET switch  
by an on-chip bootstrap circuit which requires only a single external  
capacitor to develop the regulated gate drive. Fixed frequency, average  
current mode control provides the regulator with inherent slope  
compensation, tight regulation of the output voltage, and superior load and  
line transient response. Switching frequencies up to 300kHz are possible.  
•
Fixed Frequency Average Current  
Mode Control  
•
•
Standby Mode for Improved  
Efficiency at Light Load  
Drives External N-Channel  
MOSFETs for Highest Efficiency  
•
•
Sleep Mode Current < 50mA  
Complementary 1 Amp Outputs with  
Regulated Gate Drive Voltage  
•
•
LDO (Low Drop Out) Virtual 100%  
Duty Cycle Operation  
Light load efficiency is improved by a fully programmable standby mode, in  
which the quiescent current consumption of the controller is significantly re-  
duced. The reduction is achieved by disabling the MOSFET driver outputs  
and the internal oscillator when the controller has sensed that the the out-  
put load current has dropped a user programmable amount from full load.  
Non-Overlapping Gate Drives  
(continued)  
BLOCK DIAGRAM  
UDG-95005-1  
SLUS286A - FEBRUARY 1998 - REVISED OCTOBER 2001  
1234567...12

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UC2874DWTR-2G4 替代型号

型号 品牌 替代类型 描述 数据表
UC2874DW-2G4 TI

类似代替

 High Efficiency, Synchronous, Step-down (Buck) Controllers
UC3874DW-2 TI

类似代替

 High Efficiency, Synchronous, Step-down Buck Controllers
UC2874DW-2 TI

类似代替

 High Efficiency, Synchronous, Step-down Buck Controllers

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