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UC3965D PDF预览

UC3965D

更新时间: 2024-09-14 13:15:07
品牌 Logo 应用领域
德州仪器 - TI 放大器
页数 文件大小 规格书
4页 58K
描述
Precision Reference with Low Offset Error Amplifier 8-SOIC 0 to 70

UC3965D 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP, SOP8,.25针数:8
Reach Compliance Code:not_compliantHTS代码:8542.39.00.01
风险等级:5.92模拟集成电路 - 其他类型:ANALOG CIRCUIT
JESD-30 代码:R-PDSO-G8长度:4.89 mm
功能数量:1端子数量:8
最高工作温度:70 °C最低工作温度:
标称输出电压:2.5 V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:Voltage References
最大供电电压 (Vsup):20 V最小供电电压 (Vsup):4.3 V
标称供电电压 (Vsup):5 V表面贴装:YES
技术:BIPOLAR温度等级:COMMERCIAL
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
微调/可调输出:NO最大电压容差:1%
宽度:3.9 mmBase Number Matches:1

UC3965D 数据手册

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application  
INFO  
UC1965  
UC2965  
UC3965  
available  
Precision Reference with Low Offset Error Amplifier  
FEATURES  
DESCRIPTION  
Accessible 2.5V Precision Reference  
The UC3965 is suitable for applications needing greater precision and  
more functionality than the TL431 type shunt regulators. The wide range  
VCC input capability enables the device to be biased from the secondary  
side output voltage rail, resulting in closed loop soft start.  
0.4% Initial Reference Accuracy  
1% Reference Accuracy over Line,  
Load, and Full Temperature Range  
The UC3965 includes an accessible 2.5V precision reference which offers  
0.4% initial and 1% reference accuracy over line, load, and full tempera-  
ture range with a low offset error amplifier, a 2X inverting amplifier/buffer,  
and an undervoltage lockout circuit. The IC is ideally suited for applica-  
tions where high precision PWM power supply regulation is required.  
Typically, the error amplifier is configured to compare a fraction of the to  
be regulated power supply voltage to the on-chip 2.5V reference. The 2X  
amplifier/buffer output is then used to drive a PWM controller or regulator.  
The UC3965 is also capable of driving an optocoupler diode for isolated  
applications.  
Low 1mV Offset Error Amplifier  
Supports Closed Loop Soft Start  
2X Inverting Amplifier / Buffer Output  
4.1V Undervoltage Lockout  
ICC 2mA at 5V  
8-Pin SOIC or DIL Package  
BLOCK DIAGRAM  
OFFSET  
VCC  
1
2
8
7
6
5
COMP  
VFB  
VREF  
2.5V  
UVLO  
5k  
+
OB  
VCC  
5k  
VOUT  
GND  
3
4
VREF  
NI  
EA  
+
15k  
7.5k  
2k  
UDG-98055  
SLUS300A - APRIL 1999  

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