MAX16977RATE+

Voltage - Output (Min/Fixed):	1V (5V)
Base Part Number:	MAX16977
Supplier Device Package:	16-TQFN (5x5)
Package / Case:	16-WQFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	No
Frequency - Switching:	2.2MHz
Current - Output:	2A
Voltage - Output (Max):	10V
Series:	--
Voltage - Input (Max):	36V
Voltage - Input (Min):	3.5V
Number of Outputs:	1
Output Type:	Adjustable (Fixed)
Topology:	Buck
Output Configuration:	Positive
Function:	Step-Down
Part Status:	Active
Packaging:	Tube

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MAX16977RATE+ Application Field and Working Principle

MAX16977RATE+ is a DC-DC switching regulator designed to operate in a wide range of applications and is categorized under PMIC Voltage Regulators. It is primary focused on delivering power to low and medium power FPGA and microcontroller applications, making it a versatile regulator that enables designers to develop applications, featuring faster switching speeds, higher current output and simplified layout feature.

Features of MAX16977RATE+

MAX16977RATE+ supports output voltage adjustment and a whole range of voltages up to 5V. It includes 32kHz switching frequency in order to offer greater efficiency and up to 2A output current, enabling it to be used for Low/medium power FPGA/microcontroller applications. The device also comes with an adjustable switching frequency, providing flexibility for system design as well as an Internal Short-Circuit Protection to guarantee fault-free operations. Furthermore, the wide input voltage range (4.5V to 24V) makes it suitable for most supply sources.

Working Principle of MAX16977RATE+

MAX16977RATE+ DC-DC switching regulator implements two modes for regulating operations: PFM (Pulse Frequency Modulation) mode and PWM (Pulse Width Modulation) mode. The device will be set to PFM mode when the load is light to reduce the power loss due to switching, therefore increasing efficiency. Conversely, the PWM mode will be enabled at heavy loads in order to maintain the fixed output voltage.Under the PFM mode, current will only be passed through the upper and lower MOSFETs when the switching frequency reaches the set frequency, then no current is passed until the next set frequency. When switched to the PWM mode, the upper and lower MOSFETs will be connected continuously, and the amount of current passed is based on the defined duty cycle. Multiple pins of the MAX16977RATE+ can be used to recalibrate the device’s operating mode and regulate the output voltage.

Conclusion

To sum up, the MAX16977RATE+ DC-DC Switching Regulator is a great option for power-sensitive applications due to its adjustable output voltage, 32kHz switching frequency, 2A output current and wide input voltage range. It implements two distinct operating modes and comes with Internal Short-Circuit Protection for enhanced safety.

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