Images are for reference only
LM334M
+BOMIC CURRENT SOURCE 3% 8SOIC
-
ManufacturerTexas Instruments
-
Mfr. Part #LM334M
-
Package SOIC (D)-8
-
In Stock6503
365 Days Quality Guarantee
7*24 hours service quarantee
90-day after-sales guarantee
Genuine Product Guarantee
Specifications
| Attribute | Value |
| Package | Tube |
| ProductStatus | Not For New Designs |
| Function | Current Source |
| Accuracy | ±6% |
| Voltage-Input | 1V ~ 40V |
| Current-Output | Adjustable |
| OperatingTemperature | 0°C ~ 70°C |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Overview
Description
Key features of the LM334M include temperature compensation, ensuring stable performance across a range of operating temperatures, and low quiescent current, making it energy efficient. It is commonly used in applications such as battery chargers, temperature sensors, and bias networks due to its simplicity and reliability. The LM334M is housed in a SOIC-8 package, which provides a compact form factor suitable for space-constrained designs. It is particularly valued for its ability to maintain a constant current over varying loads and supply voltages, making it an essential component for precision current regulation in various electronic applications.
Equivalent
Features
1. Adjustable Output: It allows for easy adjustment of output current from 1µA to 10mA using a single resistor.
2. Wide Voltage Range: Operates over a wide voltage range from 1V to 40V.
3. Temperature Stability: Offers excellent temperature stability, making it suitable for applications requiring consistent performance across varying temperatures.
4. Low Temperature Coefficient: Typically 0.33%/°C, which helps in maintaining consistent current over temperature variations.
5. High Compliance Voltage: Ensures a broad range of operation in both high and low voltage applications.
6. Minimal External Components: Requires only a single resistor to set the output current, simplifying circuit design.
7. Compact Package: Available in a small surface-mount package, enhancing flexibility for PCB layout.
8. Applications: Ideal for biasing, current limiting, battery charging, and as a precision current reference.
These features make the LM334M a versatile and reliable component for various electronic applications.
Pinout
1. Pin Count:
- The LM334M comes in an 8-pin SOIC (Small Outline Integrated Circuit) package, but only three of these pins are used for its basic operation as a current source.
2. Pin Functions:
- Pin 1 (R): This is connected to a resistor that sets the output current. The current is approximately 67.7 mV divided by the resistance connected to this pin.
- Pin 3 (V+): This is the positive voltage supply pin. It provides the necessary power for the LM334M to function.
- Pin 2 (V-): This is the current output pin. The current flows from this pin to the load or ground.
The LM334M can be used to set currents ranging from microamperes to milliamperes with high accuracy, making it suitable for biasing, signal conditioning, and other applications requiring a stable current.