MP3216GJE-P

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The MP3216GJE-P from Monolithic Power Systems is a synchronous buck DC-DC converter with an integrated low-side MOSFET for power distribution applications. This buck regulator can provide up to 3A continuous output current over a 4.5V to 28V input voltage range. It is fully specified over a -40°C to +85°C temperature range, and includes support for both 0.8V and 1.2V output voltages. The device features cycle-by-cycle current limit, high efficiency, low output voltage ripple, as well as UltraFast transient response and soft-start functions. This makes the MP3216GJE-P an ideal solution for a wide range of high-performance, low-power applications.

Application Field

The MP3216GJE-P is a powerful synchronous DC-DC buck regulator for a variety of applications. It can be used to provide a regulated voltage supply for memory systems, FPGAs, DSPs and microcontrollers. It is also suitable for a variety of point-of-load applications, such as powering peripheral USB or SDIO devices. Additionally, the device can also be used to power image sensors and other consumer electronics products. Directional LCD backlighting and LED strip light driving are two examples of lighting applications that can benefit from the MP3216GJE-P’s flexibility.

Working Principle

The MP3216GJE-P operates in a synchronous buck configuration, which means that the output is regulated by controlling the duty cycle of the switching transistor. The device contains an internal transconductance comparing amplifier that monitors the output voltage and adjusts the duty cycle to maintain the desired output voltage. The MP3216GJE-P also incorporates an integrated low-side MOSFET for power distribution throughout the board. The device has integrated soft-start and UltraFast transient response capabilities to ensure that the current drawn by the output does not exceed a safe limit at start-up.

The device includes a slew-rate limited frequency foldback feature, which reduces the switching frequency as the output current demand increases. This helps to protect components from thermal stress and provides improved stability under dynamic load conditions. The device also features adjustable soft-start capabilities, which allow the user to configure the soft-start rate in order to reduce start-up stress. Additionally, the device includes cycle-by-cycle current limiting and short-circuit protection, which ensures that the device is protected from overtemperature and overcurrent conditions.

The device has a low-power shutdown control pin that can be used to turn the device off, which reduces power consumption during sleep or idle periods. In addition, the device also has an output voltage sign pin which can be used to monitor the output voltage rail.

The MP3216GJE-P is available in both SOT-23-5 and TO-252-4 packages and is fully specified over a -40°C to +85°C temperature range. The device can be used with high-efficiency switching frequencies of up to 2MHz, making it an ideal choice for compact, low-power applications.

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