LM4040CIM3-8.2

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Power Management Integrated Circuit (PMIC) systems are becoming increasingly prevalent in today’s diverse electronics industry. One important component of power management is the voltage reference. Applications of effective voltage references range from providing clear and accurate reference voltages in digital and analog circuits, to providing feedback control to power supply systems. The LM4040CIM3-8.2 is an example of a precision, precision-trimmed, low-dropout voltage reference diode, applicable to many situations, including portable or battery-powered systems.

The LM4040CIM3-8.2 is available in a small 5-lead, vertically mounted SC-70 package, which simplifies implementation and requires minimal board space, allowing for higher integration levels in a system. The device employs an accurate, low temperature coefficient reference diode with a precision resistor and laser trim architecture. This allows easy, independent adjustment of both voltage and temperature coefficient. The device also includes a low-impedance, PNP output transistor and ESD protection circuitry, making it suitable for use in precision analog system.

The LM4040CIM3-8.2 provides a reference voltage in the range of VREF = 8.2 V ± 50 mV, with a temperature coefficient (TC) of 10 ppm/°C. This device also offers an input voltage range of VIN = 8.5 V to 13.2 V with a low temperature coefficient, ensuring a stable reference voltage across temperature and power supply variations. Power supply rejection ratio (PSRR) and long-term stability are also important features of the LM4040CIM3-8.2, with a typical PSRR of -75 dB at 100 kHz and excellent long-term stability of 0.1% over 5 years. Finally, the device can effectively source 0.5 mA of current, making it an ideal choice for use in many systems.

The LM4040CIM3-8.2 utilizes a low-Noise architecture comprising precision, trim polarization, and temperature compensation networks. These networks allow the device to exhibit excellent temperature and power supply stability. The temperature compensation network comprises a Zener diode, a diode and a series regulated bias current which provide the necessary additional precision and temperature stability. The independent trim resistor and laser-trimmed resistor, which are connected in series, enable precise trimming of both voltage and temperature coefficient.

The LM4040CIM3-8.2 exhibits excellent performance characteristics and is suitable for use in many applications, such as automotive electronics, medical electronics, consumer electronics and industrial systems. Its precise voltage and temperature coefficient, with excellent PSRR, long term stability and low noise, make it ideal for systems requiring reliable and accurate voltage references. Furthermore, its low input voltage and small package make it an excellent choice for portable or battery-powered systems.

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