AP7381-50V-A

Current - Output:	150mA
Supplier Device Package:	TO-92
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C (TJ)
Protection Features:	Current Limit, Thermal Shutdown
Control Features:	--
PSRR:	--
Current - Supply (Max):	25µA
Current - Quiescent (Iq):	2.5µA
Series:	--
Voltage Dropout (Max):	1V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	5V
Voltage - Input (Max):	40V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Box (TB)

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Introduction

The PMIC performance has become more and more important, the PMIC device is the heart of control and processing the circuit. AP7381-50V-A is one of the voltage regulator device which belongs to the PMIC - Voltage regulator - Linear family. This article will discuss the application field and working principle of AP7381-50V-A device.

Application Field

AP7381-50V-A is suitable for use in various applications, requiring efficient and reliable protection. These applications include automotive, industrial, telecommunication and consumer equipment. Furthermore, the AP7381-50V-A has an absolute maximum rated operating temperature of 120°C, operating temperature range from -40°C to 125°C and a wide input voltage range from 4.5 V to 6.0 V. This voltage regulator is also suitable for applications requiring different voltages with the same device, providing, for example, 3.3V and 1.8V as two outputs. This is thanks to its programmable output voltage, capable of configuring different voltage between 0.6 to 5.5V. It offers the highest efficiency, lowest noise and EMC performance within its class.

Working principle

The AP7381 series of voltage regulators adopt an improved buck-boost technique, also referred to as a negative charge pump. It employs a wide adjustable voltage range, reduces output noise and improves the load transient response. Power is supplied through a stable current source, a.k.a. the switch capacitor module, to the input terminal. It then passes through the switch capacitor attenuator and to the output terminal. The input current of the switch capacitor regulation module is then smoothed by the smoothing network, which ensures a stable input voltage. By controlling the switching frequency of the switch capacitor module using the control block, the output voltage is set to the desired level. The Maximum Output Current Rating of the AP7381-50V-A voltage regulator is specified at 250mA and has a Maximum Output Voltage of 6.0V. It also includes an internal over-current protection circuit, which will automatically shut down the device in the event of over-current or short circuit condition.

Conclusion

In conclusion, AP7381-50V-A is a high performance voltage regulator device suitable for various applications, capable of providing various outputs with the same device. It is designed with an improved buck-boost technique, reducing output noise and improving the load transient response. We have discussed the application field and working principle of AP7381-50V-A device in this article.

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