MC7908CD2TR4G

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The MC7908CD2TR4G is a linear voltage regulator. It is only intended to be used as a post regulator to step down a higher voltage to provide a clean, adjustable and highly regulated output voltage. The MC7908CD2TR4G is specifically designed to reduce the level of output noise that is introduced by the main switching regulator. It offers superior transient response characteristics and is the perfect function for meeting the stringent EMI regulations.

The MC7908CD2 TR4G offers an adjustable output voltage regulation range from 1.2V to 28V. It operates over an input voltage range of 7V – 40V and can supply up to 500mA of continuous output current. This voltage regulator provides excellent line and load regulation, low output noise and high PSRR performance.

The MC7908CD2 TR4G features the 2.5V to 5.5V adjustable voltage setting range over low current range and the 8V to 28V adjustable voltage setting range over higher current range. Moreover, the device provides two additional outputs, the SINK output and the Level PRT (program resistor) output, which are used to adjust the output voltage. It also features undervoltage lockout and thermal shut-down protection.

The MC7908CD2 TR4G can be used in multiple applications. It can be used in automotive applications such as jitter circuits, audio amplifiers, passive filters, active filters and other systems requiring precise voltage regulation and high reliability. It can also be used in telecom equipment, consumer electronics, industrial control systems and others.

The MC7908CD2 TR4G can be configured to provide the required output voltage in several ways. It provides a response time of typically 150μsec from light-load to full-load. This allows the device to quickly stabilize at the required output voltage. The output response is optimized to ensure that any load transient gets regulated quickly and with minimal noise.

The MC7908CD2 TR4G has a working principle wherein it acts as a shunt regulator, functioning in an open loop configuration. The device is designed to sense the voltage across the output connecting pin and regulates the output voltage by modulating the shunt current. This modulated shunt current acts as a driving force behind the power PNP that regulates the output voltage. This entire process is monitored by the built-in feedback loop that ensures the voltage remains within the required specs.

Overall, the MC7908CD2 TR4G is a monolithic linear voltage regulator that provides excellent, stable and clean operation of the device. It is the ideal choice for post regulator applications that require low noise and a wide adjustability range. Its fast transient response and thermal protection features make it suitable for various power management applications.

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