MP2303DQ-LF-P

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The MP2303DQ-LF-P is a highly integrated current mode DC/DC switching regulator. The device uses a constant frequency, current mode PWM control scheme that is tailored for low noise and low EMI system designs. The MP2303DQ-LF-P employs a constant on-time control technique, which provides fast transient response and excellent line regulation. The device uses a low voltage sensing architecture and the minimum input voltage is ultra-low, as low as 2V. Experimentally, MP2303DQ-LF-P could be used to drive motors from 3V to 72V at up to 3A.

MP2303DQ-LF-P is a compact and integrated application field and working principle for DC to DC switching regulators. It can be used to convert between various low voltage and low current DC voltages quickly and accurately. The adjustable input voltage range makes it ideal for applications such as automotive, industrial, and consumer electronics. It is also well suited for power supply design applications from 3V – 72V DC input voltage. Moreover, several features make it suitable for many high-power supply designs including ripple injection mode compensation, output power up to 75W, wide input voltage range, low quiescent current, and cycling mode operation.

The MP2303DQ-LF-P is a boost regulator operating in constant frequency, current mode and features programmable output voltage and over current protection. In operation, constant frequency current mode keeps the regulator operating at a set frequency and provides tight control loop dynamics in all operating conditions. The output current sensing method ensures that the output current is accurately regulated under all load conditions. With the rise of input voltage, the output voltage is also regulated. The output voltage is monitored using an external resistor in order to prevent output over-voltage in the event of excessive input voltage.

The MP2303DQ-LF-P works in two stages: boot and normal operation. In boot stage, the MP2303DQ-LF-P is started, the output voltage is ramped up and the output current is limited. This prevents the current flowing to the output pin from exceeding the specified current limit. Once this output current limit is reached, the device enters normal operation as the PWM control circuitry takes over and the output voltage is adjusted as needed. Once in normal operation, the internal PWM control circuitry dynamically adjusts the output voltage to maintain the desired regulation.

Being a current mode topology, MP2303DQ-LF-P supports both continuous and discontinuous conduction mode operation. The device also incorporates a power save mode, where the controller is inactive during light load conditions to provide a high efficiency under low consumption applications. In addition, other features such as accurate output voltage, wide input voltage range, power save mode, over current protection and under voltage, provide the user with great flexibility and convenience in adjusting the device to the application.

The MP2303DQ-LF-P is an all-in-one DC/DC switching regulator module incorporating advanced features to streamline design, reduce BOM count and time-to-market. With its sophisticated features and flexibility, the regulator is ideal for a wide range of power applications, making it an ideal solution for any system designer. With built-in over-voltage, under-voltage, short circuit and over-temperature protection, the device gives designers and system integrators the confidence to build their products with the assurance that the regulator will continue to provide consistent performance for the life of their product.

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