LM79L15ACM

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A linear voltage regulator is a type of regulator used to maintain a constant output voltage. The LM79L15ACM is a three terminal linear voltage regulator which offers a substantial improvement in terms of performance, cost, and size over its predecessor, the LM79L15.

Application Field

The LM79L15ACM is a low-power, low dropout voltage regulator with very small footprint. This regulator is ideal for portable battery-powered applications such as mobile phones and notebooks. It is also well-suited for automotive applications where its low power dissipation is important to reduce battery power drain.

Working Principle

The LM79L15ACM is a linear voltage regulator that maintains an output voltage of near 5V by comparing the regulated voltage to a reference voltage. It controls the output voltage by switching a FET switch whose drain is connected to the regulated voltage output. Depending on the control signal from the reference, the FET switch turns ON or OFF, accordingly controlling the output voltage. This process starts at the input voltage, where a standard clock is used to provide PWM (pulse width modulation) control signals to the input of the LM79L15ACM. The LM79L15ACM then controls the pulse width of the output voltage by regulating the output voltage in response to the reference voltage. This regulation minimizes current surges and helps to protect sensitive electronic devices.

Conclusion

The LM79L15ACM is a low dropout linear voltage regulator which is optimal for mobile devices and automotive applications. It is designed to maintain an output voltage of near 5V by controlling the voltage regulator with a PWM control signal from a standard clock. As a result, it minimizes current surges and provides protection to sensitive electronic devices.

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