ST2L05-3318K5

Current - Output:	1A, 1A
Base Part Number:	ST2L05
Supplier Device Package:	5-SPAK
Package / Case:	SPak-5 (5 leads + Tab)
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	60dB (120Hz)
Current - Quiescent (Iq):	7mA
Series:	--
Voltage Dropout (Max):	1.3V @ 1A, 1.3V @ 1A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V, 3.3V
Voltage - Input (Max):	7V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Obsolete
Packaging:	Tube

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Introduction

ST2L05-3318K5 is an advanced linear voltage regulator which is used in applications requiring precise voltage regulation. It has a wide input voltage range and comes with an adjustable output voltage. It is designed with low quiescent current and high power efficiency, allowing it to provide excellent power regulation in low power applications. It employs a three-stage regulation design that helps to reduce output ripple and noise for smoother operation.

Applications

ST2L05-3318K5 voltage regulator is suitable for applications requiring low quiescent current and high power efficiency, such as:

• Automotive
• Consumer electronics
• Industrial equipment
• Telecommunications
• Medical devices
• Instrumentation

Features

ST2L05-3318K5 voltage regulator has several distinct features that make it ideal for power regulation applications:

• Wide input voltage range: 5.5V to 23V
• Adjustable output voltage
• Low quiescent current: 100uA
• High power efficiency
• Three-stage regulation design for reducing output ripple and noise
• High output current capacity up to 4A
• Protections include over-current, over-temperature and reverse polarity

Working Principle

The ST2L05-3318K5 linear voltage regulator is a three-stage regulation device that unregulates the input power by using a low-dropout (LDO), medium-dropout (MDO), and a high-dropout (HDO) stage. The three-stage design helps to reduce output ripple and noise to ensure stable operation.The first stage, the LDO stage, is designed with a low quiescent current and high power efficiency to regulate an input voltage of 5.5 V to 13.5 V, while the medium dropout (MDO) stage regulates a bigger input voltage range up to 19.5 V. The last stage, the high-dropout (HDO) stage, can handle higher input voltages up to 23 V, while still maintaining high power efficiency.The ST2L05-3318K5 has an adjustable output voltage capability, allowing it to be set to any value from 3.2 V to 5.125 V. This allows for precise voltage regulation, improving efficiency and reliability.

Conclusion

The ST2L05-3318K5 is an advanced linear regulator that is ideal for applications requiring precise voltage regulation. It has a wide input voltage range, adjustable output voltage capability and high power efficiency, allowing for better power regulation in low power applications. With its low quiescent current design, three-stage regulation design, and protect features, the ST2L05-3318K5 is an excellent choice for various applications.

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