MAX38902AATA+

Voltage Dropout (Max):	0.3V @ 500mA
Supplier Device Package:	8-TDFN (2x2)
Package / Case:	8-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Protection Features:	Over Current, Over Temperature, Reverse Polarity
Control Features:	Enable
PSRR:	70dB ~ 40dB (1kHz ~ 1MHz)
Current - Quiescent (Iq):	600µA
Current - Output:	500mA
Series:	--
Voltage - Output (Max):	5V
Voltage - Output (Min/Fixed):	1.2V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tube

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Introduction to MAX38902AATA+

The MAX38902AATA+ is a highly efficient non-synchronous buck converter with integrated power switches, designed for low quiescent current and fast, efficient energy transfer in demanding systems. It is a versatile low-input voltage buck voltage regulator with a wide range of output voltage and power capability. With a wide input voltage range (3V to 48V), it can efficiently step down the voltage from board, battery, or external sources. Additionally, its integrated control and protection features ensure optimal performance in a variety of applications.

MAX38902AATA+ Application Fields

The MAX38902AATA+ is an ideal part for a variety of applications that require low voltage or power input regulation or reduction, such as datacom, telecom, instrumentation, medical, industrial, and automotive. It can be used to regulate and step down from board or battery inputs, or to reduce voltage from a higher voltage external source. It is well-suited for applications such as on-board voltage regulators, DC/DC converters, linear voltage regulators, voltage followers, adjustable voltage regulators and reference regulators.

Working Principle of MAX38902AATA+

The MAX38902AATA+ is a basic buck converter. It takes an input voltage (3 to 48V) and steps it down to an adjustable output voltage. The switching frequency of the converter is set by an internal oscillator. The power switches are integrated in the device and operate in an non-synchronous mode. In non-synchronous operation, the power switch is turned off when the output voltage has reached the desired level, and then turned on again when the output voltage has dropped below the desired level. The MAX38902AATA+ includes a control loop that regulates the output voltage. The control loop includes an integrated voltage error amplifier and a voltage feedback divider. The error amplifier compares the output voltage to a reference voltage set by the divider network, and then adjusts the duty cycle of the power switches to maintain the output voltage at the desired level.

Features of MAX38902AATA+

In addition to its basic operation, the MAX38902AATA+ also features a number of advanced features that make it well-suited for a wide range of applications. It includes several protection features, such as Under Voltage Lockout (UVLO), over current protection, and thermal shutdown. Additionally, the device features an enable pin, allowing the output voltage to be disabled when not in use, reducing quiescent current draw and conserving battery power. It also has low output voltage ripple, allowing it to provide stable power with minimal noise. The MAX38902AATA+ comes in a SOT-23-8 package, and is available in several temperatures from -40 °C to +125 °C. It is rated for operation from -40 °C to +85 °C, and can handle peak currents up to 8 A. With its wide range of features, the MAX38902AATA+ is an excellent choice for a variety of low-input, low-output voltage regulation or reduction applications.

Conclusion

The MAX38902AATA+ is a versatile, efficient non-synchronous buck converter with integrated power switches, designed for low quiescent current and fast, efficient energy transfer in demanding systems. With its wide input voltage range (3V to 48V), integrated protection and control features, and small footprint, the MAX38902AATA+ is an ideal part for a variety of applications that require low voltage or power input regulation or reduction.

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