QH8MA4TCR Discrete Semiconductor Products

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
FET Type:	N and P-Channel
FET Feature:	Standard
Drain to Source Voltage (Vdss):	30V
Current - Continuous Drain (Id) @ 25°C:	9A, 8A
Rds On (Max) @ Id, Vgs:	16 mOhm @ 9A, 10V
Vgs(th) (Max) @ Id:	2.5V @ 1mA
Gate Charge (Qg) (Max) @ Vgs:	15.5nC @ 10V
Input Capacitance (Ciss) (Max) @ Vds:	640pF @ 15V
Power - Max:	1.5W
Operating Temperature:	150°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	8-SMD, Flat Lead
Supplier Device Package:	TSMT8

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QH8MA4TCR Application Field and Working Principle

Introduction

QH8MA4TCR is an integrated circuit (IC) produced by a company called Fairchild Semiconductor that provides a very high level of power and voltage regulation for numerous different types of electrical applications. It utilizes a stand-alone voltage regulator component that is easily integrated into existing or new electronic systems. Its power and voltage regulation ICs are designed to provide very stable and easily adjustable power and voltage regulation in extreme environments.

Application Fields

QH8MA4TCR, with its high power and voltage regulation accuracy, is mainly used in the automotive industry to provide power supply for onboard navigation systems and entertainment equipment. It is also used in a variety of other applications including industrial and military equipment where power and voltage stability are crucial. Moreover, it is also used in medical equipment, overhead lighting and HVAC systems, where precision voltage regulation and high fidelity performance is essential.

Working Principles

The QH8MA4TCR IC integrates two functions, one for the power stage (PS) and the other for the voltage regulation stage (VRS). The PS works by using two sets of power transistors, N-channel MOSFETs and P-channel MOSFETs, to provide the output voltage. The N-channel MOSFETs increase the output voltage and the P-channel MOSFETs decrease the output voltage. On the other hand, the VRS utilizes two sets of comparators, one positive and one negative, to detect the input voltage and adjust the output voltage accordingly. When the input voltage is higher than the regulated voltage value, the comparator will detect this and the P-channel MOSFET will be activated. This decreases the output voltage until the input voltage is equal to the regulated value. Conversely, when the input voltage is lower than the regulated voltage value, the negative comparator will activate the N-channel MOSFET, increasing the output voltage until the input and regulated values are equal.

Conclusion

QH8MA4TCR is an integrated circuit that provides a very high level of power and voltage regulation for numerous different types of electrical applications. It utilizes a stand-alone voltage regulator component that is easily integrated into existing or new electronic systems. Its power and voltage regulation ICs are designed to provide very stable and easily adjustable power and voltage regulation in extreme environments. QH8MA4TCR is mainly used in the automotive industry to provide power supply for onboard navigation systems and entertainment equipment, as well as in a variety of other applications such as industrial and military equipment where power and voltage stability are crucial. Its working principle relies on two sets of power transistors, N-channel MOSFETs and P-channel MOSFETs, for the power stage and two sets of comparators for the voltage regulation stage. It is a highly reliable, efficient and inherently safe IC that has been proven to be extremely effective in its application field.

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