LM4040BIM3-4.1

Voltage references are an indispensable component of voltage regulator circuitry and can be used in almost any application that requires a stable and reliably accurate reference voltage. The LM4040BIM3-4.1 is a precision micropower voltage reference from Texas Instruments which offers excellent accuracy and low power consumption along with an exceptionally wide operating temperature range. This device features a voltage accuracy of ±0.4mV and a wide operating temperature range from -40°C to +125°C, making it suitable for automotive, industrial, portable, and surface mount applications.

The LM4040BIM3-4.1 is available in a wide variety of package types and pinouts to accommodate various circuit designs. The device also offers a wide range of output currents, from 0.5mA to 7.5mA. It is extremely accurate, with a voltage accuracy of ±0.4mV, and offers a low power consumption of 10μA max. Additionally, its input voltage range is between 0.8V and 5.5V, making it suitable for a variety of applications.

The operating principle of the LM4040BIM3-4.1 is simple and relies on the already well-known Zener diode as its reference element. The Zener diode has a predictable voltage drop across it which is determined by its specific parameters, and the voltage reference circuit amplifies this voltage for use in the required output voltage. The circuit does this by comparing the Zener reference voltage to an external reference voltage, such as a band gap reference, and amplifying the difference. The amplified voltage is then used as the output voltage reference.

The LM4040BIM3-4.1 can be used in almost any application where a precise reference voltage is needed, such as automotive instrumentation, laser power supplies, medical instrumentation, or any other application where an accurate and reliable reference voltage is required. The device is available as a TO-92, SOT-23, or SC70 package and is rated for operation at a maximum junction temperature of +125°C, assuring its use in a wide range of environments. Additionally, it consumes very little power, making it suitable for use with applications that require long runs on battery power.

The LM4040BIM3-4.1 voltage reference from Texas Instruments is an excellent choice for any application requiring a precision, low-power, wide operating temperature range reference voltage. Its features and ease of use make it an ideal solution for automotive, industrial, portable, surface mount, or other applications that require an accurate and reliable reference voltage.