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UC2572DTRG4 PDF预览

UC2572DTRG4

更新时间: 2024-09-15 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
9页 288K
描述
Negative Output Flyback Pulse Width Modulator 8-SOIC -40 to 85

UC2572DTRG4 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:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.16模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:VOLTAGE-MODE控制技术:PULSE WIDTH MODULATION
最大输入电压:30 V最小输入电压:4.75 V
标称输入电压:5 VJESD-30 代码:R-PDSO-G8
JESD-609代码:e4长度:4.9 mm
湿度敏感等级:1功能数量:1
端子数量:8最高工作温度:85 °C
最低工作温度:-40 °C最大输出电流:0.7 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):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:115 kHz
技术:BIPOLAR温度等级:INDUSTRIAL
端子面层:Nickel/Palladium/Gold (Ni/Pd/Au)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 mm
Base Number Matches:1

UC2572DTRG4 数据手册

 浏览型号UC2572DTRG4的Datasheet PDF文件第2页浏览型号UC2572DTRG4的Datasheet PDF文件第3页浏览型号UC2572DTRG4的Datasheet PDF文件第4页浏览型号UC2572DTRG4的Datasheet PDF文件第5页浏览型号UC2572DTRG4的Datasheet PDF文件第6页浏览型号UC2572DTRG4的Datasheet PDF文件第7页 
UC1572  
UC2572  
UC3572  
Negative Output Flyback Pulse Width Modulator  
FEATURES  
DESCRIPTION  
Simple Single Inductor Flyback PWM  
for Negative Voltage Generation  
The UC3572 is a negative output flyback pulse width modulator which con-  
verts a positive input voltage to a regulated negative output voltage. The  
chip is optimized for use in a single inductor negative flyback switching con-  
verter employing an external PMOS switch. The block diagram consists of  
a precision reference, an error amplifier configured for voltage mode opera-  
tion, an oscillator, a PWM comparator with latching logic, and a 0.5A peak  
gate driver. The UC3572 includes an undervoltage lockout circuit to insure  
sufficient input supply voltage is present before any switching activity can  
occur, and a pulse-by-pulse current limit. Output current can be sensed and  
limited to a user determined maximum value. The UVLO circuit turns the  
chip off when the input voltage is below the UVLO threshold. In addition, a  
sleep comparator interfaces to the UVLO circuit to turn the chip off. This re-  
duces the supply current to only 50µA, making the UC3572 ideal for battery  
powered applications.  
Drives External PMOS Switch  
Contains UVLO Circuit  
Includes Pulse-by-Pulse Current Limit  
Low 50µA Sleep Mode Current  
BLOCK DIAGRAM  
UDG-94094-2  
SLUS275A - MARCH 1999 - REVISED AUGUST 2001  

UC2572DTRG4 替代型号

型号 品牌 替代类型 描述 数据表
UC3572D TI

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