S-1335A23-N4T1U3

Current - Output:	150mA
Supplier Device Package:	SC-82AB
Package / Case:	SC-82A, SOT-343
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Overcurrent, Soft-Start
Control Features:	Enable
PSRR:	80dB ~ 70dB (1kHz ~ 10KHz)
Current - Supply (Max):	54µA
Current - Quiescent (Iq):	1µA
Series:	S-1335
Voltage Dropout (Max):	0.127V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.3V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

PMIC stands for power management integrated circuit, and it is an integrated circuit which is responsible for the power management of a microcontroller or any other embedded computing device. PMICs have been used in modern electronic devices since the 1970s as they can provide a steady and more power efficient supply of power to the digital core of the system to allow it to operate better. The S-1335A23-N4T1U3 is a type of PMIC which is typically used for voltage regulation in linear applications. This article will discuss the application field and working principle of this particular device.

Application Field

The S-1335A23-N4T1U3 is a low drop linear voltage regulator which is designed for low power applications with an output voltage range of 1.8V to 5.5V. It is used as an on-chip regulator to provide a stable and accurate output voltage without the need for external components. It is most commonly used in automotive, industrial, and consumer applications such as portable home appliances, battery operated devices, and mobile phone chargers.This particular linear voltage regulator is also suitable for applications which require AEC-Q100 qualification. It is RoHS compliant and meets industrial reliability standards. It is capable of providing a high level of output accuracy and stability even in the most demanding environments. The maximum output current of the S-1335A23-N4T1U3 is 300mA, and its maximum quiescent current is 80µA.The S-1335A23-N4T1U3 is able to provide full protection from over-voltage and under-voltage, as well as thermal protection. It also provides built-in protection against reverse current and short circuits. The output voltage is adjustable via external resistors, and its wide operating temperature range allows it to be used in a variety of different applications.

Working Principle

The basic working principle of a linear voltage regulator is the same regardless of the particular device. It is a simple circuit which is composed of a current source to provide the output current, a shunt regulator to protect against overload and short-circuits, and an amplifier which serves to reduce its output impedance.The S-1335A23-N4T1U3 is an example of a linear voltage regulator which uses an NMOS transistor as its current source to provide the output current. The input voltage is held by an internal voltage divider, which is internally connected to two external resistors. By adjusting the two resistors, the voltage at the feedback terminal can be set to the desired output voltage.The output current is then regulated by the P-channel MOSFET which acts as the shunt regulator. It acts as a current limit for the output, preventing it from exceeding the predetermined limit. The P-channel MOSFET also acts as a thermal protection, by limiting the input current whenever the voltage regulator is over-heated, thus preventing any damage due to excessive temperature.Finally, the amplifier amplifies the difference between the output voltage and the control voltage in order to reduce the output impedance of the voltage regulator. This allows the output voltage to remain relatively constant, even when confronted with a varying load.

Conclusion

The S-1335A23-N4T1U3 is a low drop linear voltage regulator which is designed for low power applications with an output voltage range of 1.8V to 5.5V. It is mainly used in automotive, industrial, and consumer applications, and is AEC-Q100 qualified and RoHS compliant. The output voltage is adjustable via external resistors, and it is also capable of providing full protection from over-voltage, under-voltage, reverse current, and short circuits. The basic working principle of the S-1335A23-N4T1U3 is that of a typical linear voltage regulator, using an NMOS transistor as its current source, a P-channel MOSFET for thermal protection and overload protection, and an amplifier to reduce the output impedance.

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