MP1583DP-LF

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PMIC, voltage regulators and DC DC switching regulators are powerful tools for managing power. The MP1583DP-LF is an efficient, low-noise and cost-effective solution for DC-DC applications. It is a three-terminal voltage-mode Pulse-Width Modulation (PWM) controller that contains all the active functions required for applications such as high-efficiency synchronous buck converters, battery chargers and DC/DC converters.

MP1583DP-LF Application Fields

The MP1583DP-LF is designed to deliver an output voltage between 1V and 5V, supporting a control range of 0.625V to 2.5V, as well as an input voltage up to 10V. This device is in a small WDFN-6L 2x2mm 8L-lead package and is suitable for wide range of application fields, such as portable device, telecom, telecom network and the most popular laptop and desktop computer market.

This device is designed to provide an accurate and constant output voltage. Its high efficiency makes it ideal for applications requiring low power consumption. The MP1583DP-LF features a high frequency discontinuous conduction mode (DCM) for improved light load efficiency, resulting in reduced output ripple and power losses. It also allows PWM dimming from 0~100 percent.

Working Principle

The MP1583DP-LF uses a constant-on-time (COT) control scheme for regulation. The device features an internally compensated voltage error amplifier and sense resistor for feedback. The errors between sensed voltage and internal reference voltage (Vfb) controls the output switch ON-time. When the switch is on, current will be proportional to the output voltage. The voltage across the sense resistor is proportional to the output current, which will be compared with the limit current set by the current sense amplifier. When the sense current is out of the range, a signal is generated to blank out the output switch period and also provides a signal to the GATE signal. In order to limit the output voltage and current, the COT signal is used to control the GATE signal, allowing the output signal to turn on and off at certain time intervals. The time interval is set by the internal clock, which will determine the output voltage and current. The device also features a low-side DMOS switch to ensure an efficient, low-noise switching supply.

The MP1583DP-LF also features an internal soft-start feature, which gradually increases the output voltage when enabled. This feature provides regulated inrush current and allows the output voltage to reach the predetermined voltage level with minimal transient stress on the system components. It also features an output feedback with adjustable phase shift to provide improved load regulation.

In addition, the MP1583DP-LF features a wide range of protection features such as thermal shutdown protection, over-voltage protection (OVP), under-voltage protection (UVP), short-circuit protection (SCP), output short-circuit protection (OSCP) and over-current protection (OCP). These protection features ensure reliable operation and enhanced system protection.

Conclusion

The MP1583DP-LF is an efficient and cost-effective DC-DC switching regulator, designed to deliver an accurate and constant output voltage. Its high efficiency makes it ideal for applications requiring low power consumption. The device also features a wide range of protection features that ensure reliable operation and enhanced system protection. The MP1583DP-LF is suitable for wide range of application fields due to its small WDFN-6L 2x2mm 8L-lead package.

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