S-812C26AY-Z2-U

Current - Output:	30mA
Supplier Device Package:	TO-92-3
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	--
Control Features:	--
PSRR:	--
Current - Supply (Max):	1.6µA
Current - Quiescent (Iq):	500nA
Series:	S-812C
Voltage Dropout (Max):	0.68V @ 10mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.6V
Voltage - Input (Max):	16V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Box (TB)

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Introduction

The S-812C26AY-Z2-U is a three-terminal linear voltage regulator designed for applications that require high output voltage accuracy, current limiting, fast transient response and low dropout voltage. It is a voltage source, with current limiting protection, used to provide a regulated output. The S-812C26AY-Z2-U is intended to regulate the output of a power supply, allowing it to remain stable with varying load demands.

Application Field and Working Principle

The S-812C26AY-Z2-U is designed for applications such as distributed power supplies, computer and telecom power supplies, automotive power systems, and other low noise linear power applications.The S-812C26AY-Z2-U uses the principle of an open-loop control circuit to regulate the output voltage of a power supply. The regulator monitors the voltage at the output terminal and adjusts its internal reference voltage to maintain a constant output voltage. This is accomplished by measuring the voltage across a voltage divider, amplifying the difference between the divided voltage and the internal reference, and controlling the output transistor current.The output transistor is connected between the input and output terminals. The output current flows through the resistor network and the transistor. The wider the gap between the input and output voltages, the higher the output current and the greater the dropout voltage.If the load current increases, the output transistor current also increases. This increase in current causes a voltage drop across the transistor, reducing the output voltage. The voltage regulator monitors this voltage drop and increases the output voltage, thus maintaining a constant output voltage.The current limiting feature of the S-812C26AY-Z2-U prevents an excessive current from damaging the device. This current limiting feature is especially useful in distributed power systems, where the output current can vary due to load conditions in the system.

Conclusion

The S-812C26AY-Z2-U is a three-terminal linear voltage regulator designed for applications that require high output voltage accuracy, current limiting, fast transient response and low dropout voltage. It is used to maintain a constant output voltage in distributed power supplies, computer and telecom power supplies, automotive power systems, and other low noise linear power applications. The S-812C26AY-Z2-U uses the principle of an open-loop control circuit to maintain constant output voltage and its current limiting feature is especially useful in distributed power systems.

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