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UC2572N PDF预览

UC2572N

更新时间: 2024-11-06 20:28:43
品牌 Logo 应用领域
德州仪器 - TI PC开关光电二极管
页数 文件大小 规格书
9页 278K
描述
Negative Output Flyback Pulse Width Modulator 8-PDIP -40 to 85

UC2572N 技术参数

是否无铅: 含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:DIP
包装说明:DIP, DIP8,.3针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.71
Samacsys Confidence:Samacsys Status:Released
Samacsys PartID:608212Samacsys Pin Count:8
Samacsys Part Category:Integrated CircuitSamacsys Package Category:Other
Samacsys Footprint Name:DIP254P762X508-8Samacsys Released Date:2017-01-12 12:59:53
Is Samacsys:N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-PDIP-T8
JESD-609代码:e4长度:9.81 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:-40 °C
最大输出电流:0.7 A封装主体材料:PLASTIC/EPOXY
封装代码:DIP封装等效代码:DIP8,.3
封装形状:RECTANGULAR封装形式:IN-LINE
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:5.08 mm子类别:Switching Regulator or Controllers
表面贴装:NO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:THROUGH-HOLE端子节距:2.54 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.62 mmBase Number Matches:1

UC2572N 数据手册

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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  

UC2572N 替代型号

型号 品牌 替代类型 描述 数据表
UC3572N TI

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Negative Output Flyback Pulse Width Modulator
UC2572NG4 TI

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UC3572NG4 TI

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