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| 型号： | LM4121AIADJMWA |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT THREE TERM VOLTAGE REFERENCE, 1.216 V, UUC |
| 封装： | WAFER |
| 文件页数： | 1/19页 |
| 文件大小： | 490K |
| 代理商： | LM4121AIADJMWA |
LM4121
Precision Micropower Low Dropout Voltage Reference
General Description
The LM4121 is a precision bandgap voltage reference avail-
able in a fixed 1.25V and adjustable version with up to 5 mA
current source and sink capability.
This series reference operates with input voltages as low as
1.8V and up to 12V consuming 160 A (Typ.) supply current.
In power down mode, device current drops to less than 2 A.
The LM4121 comes in two grades A and Standard. The best
grade devices (A) have an initial accuracy of 0.2%, while the
standard have an initial accuracy of 0.5%, both with a
tempco of 50ppm/C guaranteed from 40C to +125C.
The very low operating voltage, low supply current and
power-down capability of the LM4121 makes this product an
ideal choice for battery powered and portable applications.
The device performance is guaranteed over the industrial
temperature range (40C to +85C), while certain specs are
guaranteed over the extended temperature range (40C to
+125C). Please contact National for full specifications over
the extended temperature range. The LM4121 is available in
a standard 5-pin SOT-23 package.
Features (LM4121-1.2)
n
Small SOT23-5 package
n
Low voltage operation
n
High output voltage accuracy:
0.2%
n
Source and Sink current output:
±5mA
n
Supply current:
160 A Typ.
n
Low Temperature Coefficient:
50 ppm/C
n
Enable pin
n
Output voltages:
1.25V and Adjustable
n
Industrial temperature Range:
40C to +85C
n
(For extended temperature range, 40C to 125C,
contact National Semiconductor)
Applications
n
Portable, battery powered equipment
n
Instrumentation and process control
n
Automotive & Industrial
n
Test equipment
n
Data acquisition systems
n
Precision regulators
n
Battery chargers
n
Base stations
n
Communications
n
Medical equipment
Block Diagram
Connection Diagrams
DS101291-1
* Resistors are removed on the LM4121-ADJ
LM4121-ADJ only
LM4121-1.2 Block Diagram
DS101291-2
Refer to the Ordering Information Table in this Data Sheet for Specific
Part Number
SOT23-5 Surface Mount Package
DS101291-35
April 2000
LM4121
Precision
Micropower
Low
Dropout
V
oltage
Reference
2001 National Semiconductor Corporation
DS101291
www.national.com
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相关代理商/技术参数 |
参数描述 |
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| LM4121AIM5-1.2 | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4121AIM5-1.2/NOPB | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4121AIM5-1.2/NOPB | 制造商:Texas Instruments 功能描述:, Voltage Reference Type:Series, Referen |
| LM4121AIM5-ADJ | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LM4121AIM5-ADJ/NOPB | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
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