ISL78302AARMMZ-T

Current - Output:	300mA, 300mA
Base Part Number:	ISL78302A
Supplier Device Package:	10-DFN (3x3)
Package / Case:	10-VFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 105°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable, Power On Reset
PSRR:	--
Current - Supply (Max):	55µA
Current - Quiescent (Iq):	36µA
Series:	Automotive, AEC-Q100
Voltage Dropout (Max):	0.23V @ 300mA (Typ), 0.23V @ 300mA (Typ)
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3V, 3V
Voltage - Input (Max):	6.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

The ISL78302AARMMZ-T is a highly integrated voltage regulator that is designed to provide reliable and efficient output voltage regulation with minimal external components. It incorporates integrated power MOSFET switches and synchronous rectifier eliminating the need for external components to reduce losses. It features current mode control, external synchronization, as well as standard features such as under/over voltage protection, load current limit, active current share and thermal shutdown.

Application Field and Working Principle

The ISL78302AARMMZ-T is a linear regulator belonging to the PMIC (Power Management IC) family of products. It is suitable for use in a variety of applications including computing and storage systems, automotive electronics, and portable mobile devices. This device provides a constant output voltage with nanosecond response times to ensure optimum performance and reliability. The ISL78302AARMMZ-T voltage regulator uses a modern linear regulator design in which an internal power MOSFET is used to switch a synchronous rectifier quickly. This optimizes output power efficiency and reduces power losses. Current mode control is used to detect input voltage and adjust the duty cycle to maintain regulation at the VOUT output. The device can be configured to work in continuous or discontinuous mode or to operate at a fixed frequency. Synchronization is also provided to allow the device to function with other voltage regulators or with internal or external clock sources. The voltage regulator has integrated over/undervoltage protection and load current limit features to protect the device from fault conditions. It also has active current sharing to ensure that the output current is evenly distributed amongst multiple devices. When the device is operating near its thermal limits, a thermal shutdown feature is used to protect the device from overheating.

Design Considerations

When selecting the ISL78302AARMMZ-T voltage regulator for a particular application, several key parameters should be taken into consideration. The required input and output voltages, the power output needed, and the desired current limit must all be considered. The switching frequency required for the application should also be taken into account as this will impact power delivery and efficiency. The device should also be selected with consideration to the environmental conditions the device will be exposed to. The device should be able to withstand the expected temperature and humidity conditions, as well as any potential vibration or shock.

Conclusion

The ISL78302AARMMZ-T is a linear voltage regulator that is designed for a variety of applications including computing and storage systems, automotive electronics and portable mobile devices. It is a highly integrated, low power regulator that utilizes a modern design to ensure optimum performance and efficiency. It has integrated power MOSFET switches and an active current sharing feature to ensure the output current is evenly distributed. It also provides external synchronization, over/under voltage protection, load current limit and thermal shutdown features. When selecting the ISL78302AARMMZ-T for a particular application, consideration should be given to the input and output voltage requirements, power output, current limit, switching frequency, and environmental conditions.

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