MP4462DQ-LF-Z

Voltage - Input (Max):	36V
Supplier Device Package:	10-QFN (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	Up to 4MHz
Current - Output:	3.5A
Voltage - Output (Max):	30V
Voltage - Output (Min/Fixed):	0.8V
Series:	--
Voltage - Input (Min):	3.8V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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<!-- Begin Article -->MP4462DQ-LF-Z is a high efficiency, 8 V to 36 V input voltage, 1.5 A step-down, DC to DC switching regulator. It is an integrated device, optimally designed for handling high output current loads, buck applications and supporting challenging load transients. The device features a high efficiency PWM controller, low-Rdson switch, wide input voltage, and very low output noise.The MP4462DQ-LF-Z can supply output currents up to 1.5A and has a minimum voltage drop of 0.45V. The device employs a synchronous rectification buck topology, which requires minimum external components. The MP4462DQ-LF-Z has programmable constant frequency and operates at 1.2MHz switching frequency.The MP4462DQ-LF-Z has a maximum duty cycle of 95%, which helps in achieving higher switching frequency at low input voltage. The device uses an external resistor enables the user to adjust the output voltage.The key feature of the MP4462DQ-LF-Z is that it provides high efficiency under both light and heavy loads. This is particularly useful in applications that require long battery life such as portable applications. Applications of MP4462DQ-LF-Z include,• Battery powered portable devices• Cell phone, PDA, and PDAs• Digital cameras• USB and point-of-load(POL) applications• Data networking and networking hubs• Displays and printers• LCD and LED monitors• Industrial control systems• Volatile and non-volatile memory• Automotive applicationsThe working principle of MP4462DQ-LF-Z is based on a synchronous rectification buck converter, which is a type of phase-shifted full-bridge, DC-DC converter. This topology has a relatively high efficiency and fast transient response, which makes them ideal for portable applications and power converters operating at very high switching frequency. The switching frequency of the synchronous rectification buck converter can be adjusted to match the input voltage, which helps in reducing the size of the inductor and switching losses, leading to higher efficiency. Additionally, it also eliminates the need for an electrolytic, or ceramic, capacitor across the input of the converter, which further improves efficiency.In operation, the MP4462DQ-LF-Z functions by regulating the supply voltage applied to the load by switching the output stage at a preset frequency and pulse width. An internal reference limits the maximum output voltage and the output voltage is set by selecting the right external resistors.<!-- End Article -->

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