LM336-5 MWC

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PMIC (Power Management Intelligent Control) systems are designed to regulate and control the voltage delivered to electronic components in order to ensure their proper functioning. A key component of a PMIC is the voltage reference, which is responsible for maintaining a constant reference level for the PMIC, allowing the system to maintain a consistent power output for its components. The LM336-5 MWC is a voltage reference specifically designed for PMIC applications, offering numerous advantages over traditional analog voltage references. This article will explain the application field of the LM336-5 MWC and its working principle.

The LM336-5 MWC is a low-power, low-cost, 3-pin voltage reference that is designed specifically for PMIC applications. It is capable of maintaining a voltage within a tight operating range of ±5 percent, making it an ideal choice for use in critical voltage monitoring and control applications. The low-power characteristics of the device also make it well suited for use in battery-operated systems, where a low quiescent current is of paramount importance. Moreover, the device has an extremely wide temperature range of -55 to +125 degrees Celsius and is available in a variety of packages, enabling it to meet the needs of a wide range of applications.

The LM336-5 MWC operates on a single, low-voltage power supply of +4.5V to +18V, making it compatible with a wide range of battery-operated systems. The device has a built-in circuit and temperature compensation to ensure that the reference voltage remains constant, regardless of temperature and other characteristics. This makes the LM336-5 MWC an ideal choice for use in critical applications requiring accurate and stable voltage. Furthermore, the device also has an input impedance adjustment pin that allows the user to adjust the reference voltage in order to meet the specific needs of their application.

The working principle of the LM336-5 MWC is based on a forward reference design. The device consists of an emitter follower circuit, with a temperature-compensated zener diode connected directly between the input and the emitter. When the voltage at the input pin is higher than that of the reference, the diode is forward biased and the current flow is diverted from the base of the transistor, preventing it from being saturated. This action ensures that the output voltage is constant and does not change, even under varying temperatures and supply voltages. The output voltage of the device is determined by the value of the reference voltage, which can be adjusted by the input pin impedance.

In addition, the LM336-5 MWC also has a built-in error amplifier for extra accuracy, a slew rate controllable larger than 0.1V/µs and a built-in overvoltage protection, making it one of the most reliable voltage reference devices available. The device also has excellent thermal and line regulation, making it an ideal choice for PMIC applications.

In conclusion, the LM336-5 MWC is an ideal voltage reference choice for PMIC applications. It has low power consumption, excellent temperature and supply line regulation and a wide operating voltage range. The device is also simple to use and has adjustable impedance to accommodate specific voltage requirements. With its reliable and accurate output, the LM336-5 MWC is the perfect choice for any power management applications.

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