AS1353-30-T

Voltage Dropout (Max):	0.6V @ 150mA (Typ)
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Short Circuit
Control Features:	Enable
PSRR:	60dB (100Hz)
Current - Quiescent (Iq):	180µA
Current - Output:	150mA
Series:	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tape & Reel (TR)

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Introduction

AS1353-30-T is a Linear Voltage Regulator (LVR) featuring ultra-low quiescent current and wide input voltage range. This Linear Voltage Regulator is a PMIC (Power Management IC) with a wide range of applications which include battery charging and managing, voltage holding, and other applications for advanced portable and home appliances.

Features

The AS1353-30-T is equipped with many features that make it suitable for a wide range of applications. Some of these features include:

• Wide Input Voltage Range: 4.5V to 36V
• Ultra-low Quiescent Current: 4 μA (typ.)
• Fast Transient Response Time: 160μs
• Wide Operating Temperature Range: -40°C to+125°C
• Very Low Dropout Voltage: 130mV @ 300mA
• High Output Accuracy: ±1.0%
• In-Circuit Adjustable Output Voltage
• Inherent Over-Current Protection

These features make the AS1353-30-T suitable for portable and home appliance applications that require low quiescent current and wide input voltage range.

Applications

Due to its wide input voltage range and low quiescent current, the AS1353-30-T is suitable for use in many applications. It is especially well-suited for battery-powered and portable applications such as laptop computers, cell phones, portable navigation systems, portable media players, and digital cameras.The AS1353-30-T can also be used to provide a stable voltage supply for home audio and video equipment such as DVD players, amplifiers, and LCD TVs. It can also be used for industrial equipment for data acquisition and control such as sensors, controllers, and meters.

Working Principle

The AS1353-30-T is a linear voltage regulator which works by using the feedback loop principle. The regulator works by using an external power supply voltage (Vin) to keep the output voltage (Vout) constant. The output voltage is regulated by means of an internal feedback loop.In the internal feedback loop, when the output voltage deviates from the set point voltage, the voltage sensor triggers a voltage comparator. The voltage comparator then issues a voltage control signal to the control circuit. This control circuit then adjusts the output current to the proper direction until the deviation between the output voltage and the set point is eliminated.

Conclusion

The AS1353-30-T is one of the most advanced Linear Voltage Regulators today. With its wide input voltage range, ultra-low quiescent current, fast transient response time, wide operating temperature range, very low dropout voltage, high output accuracy and in-circuit adjustable output voltage, it is perfect for portable and home audio/video applications. Its inherent over-current protection makes it ideal for protection against high-current events. With its working principle based on the feedback loop principle, the AS1353-30-T Linear Voltage Regulator provides stability and accuracy in a variety of applications.

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