NCV8184DTRK

Current - Output:	70mA
Base Part Number:	NCV8184
Supplier Device Package:	DPAK-5
Package / Case:	TO-252-5, DPak (4 Leads + Tab), TO-252AD
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C
Protection Features:	Over Temperature
Control Features:	Enable
PSRR:	60dB (120Hz)
Current - Supply (Max):	7mA
Current - Quiescent (Iq):	20µA
Series:	Automotive, AEC-Q100
Voltage Dropout (Max):	0.6V @ 60mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	Tracking
Voltage - Input (Max):	42V
Number of Regulators:	1
Output Type:	Adjustable
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

The NCV8184DTRK is an ultra-low current power management integrated circuit (PMIC) from ON Semiconductor. It is based on an integrated linear regulator that provides up to 18V of output voltage with very low quiescent current in dropout operation. In low dropout operation, the device has tight regulation and high efficiency, making it well suited for low power applications.

Application Field Of NCV8184DTRK

The NCV8184DTRK is designed to provide a regulated output voltage in a variety of applications such as battery powered consumer devices, industrial, medical and automotive systems. It is well suited for low power dc-to-dc conversion, minimize board space, simplify thermal design challenges and reduce system cost. The NCV8184DTRK has excellent line and load transient response that makes it ideal for applications where fast load transients occur. The device is also able to work phenomenally with low power components like real time clock, thermistors, sensors and other low-power components. The NCV8184DTRK also employs power-saving and other facilities including a sleep mode, power-down feature and internal programmable soft-start for start-up time. The device also includes a thermal protection feature wherein the device automatically shuts off in case of excessive temperature or overload conditions occur.

Working Principles of NCV8184DTRK

The NCV8184DTRK is based on a linear regulator which works by comparing the output voltage (Vout) to an internal reference voltage (Vref). When the two voltages are equal, the output voltage is regulated. To increase the output voltage, the device turns on more current-carrying MOSFETs (transistors) to supply more current to the output, and when the output voltage is higher than the reference the device turns some of them off, reducing the current to the output. This process is regulated and is repeated to keep Vout at the desired voltage level. The NCV8184DTRK also features a low-dropout (LDO) design, which allows the output voltage to remain regulated at low input voltages, usually at less than 0.2V lower than the Vout level. This is useful for applications requiring a highly stable supply voltage, such as a processor core, which usually requires less than 0.2V dropout. The NCV8184DTRK also features an adjustable current limit feature, which allows the user to set the peak current allowed when the output voltage drops below the reference voltage. This feature prevents excessive current if the device is forced into a dropout condition, preventing damage to the regulator and components connected to it.

Conclusion

The NCV8184DTRK is an integrated linear regulator PMIC with ultra-low quiescent current and tight regulation in dropout operation. It is suitable for applications requiring highly stable supply voltage, such as processor cores, and low power components like real time clocks, thermistors and sensors. The device also features an adjustable current limit feature for preventing excessive current if the device is forced into a dropout condition.

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