MAX38902BATA+T

Voltage Dropout (Max):	0.3V @ 500mA
Supplier Device Package:	8-TDFN-EP (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):	5.3V
Voltage - Output (Min/Fixed):	0.6V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

MAX38902BATA+T is a linear regulator with high efficiency and low noise performance, designed for applications in consumer and portable electronics.It features dual voltage rails and wide temperature operating range, making it suitable for both consumer and industrial applications. In addition to its high output current capability, it has a very low quiescent current and low quiescent noise, making it ideal for high current, low noise applications.

Applications

MAX38902BATA+T has a wide range of applications, ranging from consumer electronics to automotive, aerospace, industrial and medical fields.For consumer electronics, the MAX38902BATA+T provides high efficiency switching voltage regulation and low noise, making it ideal for applications such as notebook computer and mobile device power supplies, LCD TVs, and portable gaming devices.In automotive applications, the MAX38902BATA+T provides an efficient, low noise power solution for engine control units. It is also suitable for power management of inverters, electric drives and vehicles’ infotainment systems.The MAX38902BATA+T is also suitable for power management of distributed applications, such as medical equipment and industrial automation systems. In addition, its high efficiency and wide temperature operating range make it ideal for field operations.

Features

The MAX38902BATA+T features dual voltage rails and a wide temperature operating range (-40°C to +125°C). It provides up to 2.8A of continuous current output, with a minimum voltage drop of 0.2V. It has low quiescent current of 10μA (typ) and low quiescent noise of 6mV (typ). It also offers excellent transient response and line regulation.The device includes a slew rate control pin (FORCE), which allows the user to optimise the output voltage ripple and transient response of the regulator, by controlling the rate at which the output voltage is changed. The FORCE pin can also be used to reduce quiescent current, by reducing the output voltage ripple.

Working Principle

The MAX38902BATA+T is a linear regulator, in which a voltage difference is introduced across a high impedance pass element, called a series element, by control of an external reference voltage. The reference voltage can be either a fixed value or an externally monitored one.The series element drains current from the input voltage and supplies it to the output. This can be done with a simple linear regulator, or a more complex switching regulator. The MAX38902BATA+T is a linear regulator, which uses an internal low dropout (LDO) series element to provide reliable output regulation.The input voltage is compared to the internal reference voltage, and the difference is used to control the series element in order to maintain the output voltage. In addition, the FORCE pin is used to adjust the output voltage ripple and transient response, by controlling the rate at which the series element changes.

Conclusion

The MAX38902BATA+T is a versatile linear regulator, designed for applications in consumer, automotive, aerospace, industrial and medical fields. It features dual voltage rails and a wide temperature operating range, and has low quiescent current and low quiescent noise. It also has an adjustable slew rate control pin to optimise output voltage ripple and transient response.

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