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LM234DT
+BOMIC CURRENT SOURCE 3% 8SOIC
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Nhà sản xuấtSTMicroelectronics
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Ông. Phần #LM234DT
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Bảng dữ liệu LM234DT DataSheet
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Gói SO-8
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Có sẵn3000
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Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Active |
| Function | Current Source |
| Accuracy | ±3% |
| Voltage-Input | 1V ~ 40V |
| Current-Output | 10mA |
| OperatingTemperature | -25°C ~ 100°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Tổng quan
Description
The LM234DT features a temperature coefficient that can be easily adjusted, which is particularly useful in temperature measurement and compensation applications. It generally provides a current output that is proportional to absolute temperature (PTAT), which can be advantageous in temperature sensing circuits. The device is housed in a small, 3-pin package, facilitating easy integration into circuit designs.
Its linear output current and low drift make it an ideal choice for precision applications. The LM234DT is also known for its low quiescent current, which helps in minimizing power consumption, an essential feature for battery-operated devices.
Equivalent
Features
1. Temperature Dependence: The output current is directly proportional to the absolute temperature (PTAT), making it useful for temperature sensing and compensation applications.
2. Wide Operating Voltage Range: Operates over a wide voltage range, typically from 2.5V to 40V, allowing versatility in various circuits.
3. Adjustable Current Output: The output current can be easily set with an external resistor, offering design flexibility.
4. Low Power Consumption: It typically consumes low power, making it efficient for battery-operated devices.
5. High Linearity: Provides a linear output over a broad temperature range, enhancing measurement accuracy.
6. Compact Package: Available in a TO-252 (DPAK) package, which is suitable for space-constrained applications.
7. Stability: Offers stable performance over a variety of environmental conditions, ensuring reliability.
8. Applications: Commonly used in temperature sensors, biasing networks, and as a current reference or limiter in circuits.
These features make the LM234DT a versatile component in temperature sensing and current regulation applications.
Pinout
1. Pin 1 (V+ or R): This pin is connected to the positive supply voltage. It also serves as the point to which the programming resistor (R) is connected. The value of the resistor determines the output current.
2. Pin 2 (V- or IOUT): This pin is the negative side of the device and is where the output current flows out. It is usually connected to a load or ground.
3. Pin 3 (ADJ): The adjust pin is used for fine-tuning the output current. By connecting a resistor between this pin and pin 1, you can set the desired current level.
The LM234 operates with a wide range of supply voltages and is known for its excellent temperature stability, making it suitable for precision current reference applications.
Manufacturer
Application
1. Temperature Sensing: Used in HVAC systems, automotive, and industrial temperature monitoring.
2. Current Sources: Ideal for biasing transistors and other semiconductor devices where stable current is needed.
3. Thermal Management: Utilized in electronic devices for temperature compensation and protection circuits.
4. Battery Management: Helps in monitoring and managing battery temperatures in charging systems.
5. Medical Devices: Used in equipment that requires precise temperature reporting for patient safety.