S-1721C2J2J-M6T1G

Current - Output:	150mA
Supplier Device Package:	SOT-23-6
Package / Case:	SOT-23-6
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current
Control Features:	Enable
PSRR:	75dB (1kHz), 75dB (1kHz)
Current - Supply (Max):	45µA
Current - Quiescent (Iq):	1µA
Series:	S-1721
Voltage Dropout (Max):	0.23V @ 100mA, 0.23V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.85V, 2.85V
Voltage - Input (Max):	6.5V
Number of Regulators:	2
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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S-1721C2J2J-M6T1G application field and working principle

Introduction

The S-1721C2J2J-M6T1G is a linear voltage regulator from Unisonic Technologies. It provides precision output voltage adjustability from a single distributed 5V or 7V supply input. It is designed for use in a variety of applications, including DSPs and low-voltage logic controllers. This voltage regulator has a wide operating temperature range of -40°C to 85°C, making it ideal for use in many different environments.

Features

The main features of the S-1721C2J2J-M6T1G include:• Output voltage adjustable range from 0.6V to 5V (directly replacing 7 V output devices) • Low drop out voltage- 0.75V • High accuracy- ±0.2V • Output current up to 200mA • Over-temperature protection • Reverse current-blocking

Applications

The S-1721C2J2J-M6T1G can be used in a variety of applications including: • Power supplies for digital signal processors • Battery-powered systems • 5V or 7V distributed power systems • TFT-LCD power supplies • Low-voltage logic controllers • Automotive systems

Working principle

The S-1721C2J2J-M6T1G is a linear voltage regulator that utilizes feedback to maintain the output voltage. It uses a pass transistor, usually a BJT, to control the voltage output. The transistor is in series with the output voltage and when a voltage drop across the transistor is detected, it is amplified by the internal error amplifier and used to control the base drive to the pass transistor in order to maintain the output voltage. The S-1721C2J2J-M6T1G features a low-dropout voltage (LDO) which reduces the input voltage headroom required to maintain a regulated output. This enables the regulator to operate at very low input voltages without compromising output voltage accuracy or stability.

Conclusion

The S-1721C2J2J-M6T1G linear voltage regulator from Unisonic Technologies is a versatile and reliable device suitable for a wide range of applications. It offers output voltage adjustability from 0.6V to 5V and low dropout voltage for extended battery life. The wide operating temperature range, reverse current protection and over-temperature protection make it perfect for use in many different power supply applications.

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