S-1167B19-I6T2U

Current - Output:	150mA
Supplier Device Package:	SNT-6A (H)
Package / Case:	6-SMD, Flat Leads
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Over Current
Control Features:	Enable
PSRR:	70dB (1kHz)
Current - Supply (Max):	16µA
Current - Quiescent (Iq):	900nA
Series:	S-1167
Voltage Dropout (Max):	0.58V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.9V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Cut Tape (CT)

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S-1167B19-I6T2U Application Fields and Working Principles

The S-1167B19-I6T2U is a low cost, low dropout voltage regulator integrated circuit (IC) developed by STMicroelectronics. This IC is part of the S-1167 series, which is a family of highly efficient ICs for use in various system applications. It is classified as a PMIC (Power Management IC) and specifically as a Voltage Regulator – Linear.

Applications

The S-1167B19-I6T2U is designed to provide a regulated output voltage of 5V with a minimum load current of 150mA, making it ideal for low power and/or battery-driven applications. Its low dropout voltage, high output current accuracy, high dynamic performance, and low total output error make it suitable for use in battery-powered applications such as portable medical instruments, small home appliances, automotive electronics and industrial systems.

Features

The S-1167B19-I6T2U is equipped with numerous desirable features, including: Maximum output current of 1.5A; Dropout voltage ranging from 0.15v to 0.7v; Maximum output voltage accuracy of 2% (relative to initial value); Programmable output voltage; Thermal protection; Power-on-reset function; and Over-current protection.

Design Advantages

The S-1167B19-I6T2U provides superior performance due to its ultra-low noise and low total output error, due in part to its precision voltage reference. This IC also features low power dissipation, ensuring that less power is wasted when regulating the output voltage. Furthermore, the S-1167B19-I6T2U operates at an ambient temperature range of -40℃ to +125℃ and supports output current of up to 1.5A.

Working Principle

At the heart of the S-1167B19-I6T2U’s operation is a control circuit consisting of an error amplifier, a current limiting circuit, an oscillator circuit, and a temperature sensing circuit. The error amplifier compares the output voltage to an internal reference voltage and adjusts the output voltage accordingly by regulating the current flowing from the input source to the output. The current limiting circuit prevents current overloads by turning off the output voltage when the load current is too high. The oscillator circuit regulates the switching frequency of the output voltage, ensuring stable system performance and preventing excessive heat loss. Finally, the temperature sensing circuit is used to detect the temperature of the output voltage and the ambient temperature, and adjust the output voltage accordingly.

Conclusion

The S-1167B19-I6T2U is a highly efficient, low cost voltage regulator integrated circuit. Its low dropout voltage, high output current accuracy, high dynamic performance, and low total output error make it ideal for use in battery-powered applications such as portable medical instruments, small home appliances, automotive electronics, and industrial systems. The design advantages of this IC, such as its ultra-low noise, low total output error, and its ability to support output currents of up to 1.5A, make it a reliable and efficient choice for voltage regulation. The S-1167B19-I6T2U’s sophisticated design ensures that it accurately regulates the output voltage by utilizing its internal control circuit, ensuring stable system performance and optimum output voltage for a variety of applications.

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