MIC5319-1.5YD5 TR

Current - Output:	500mA
Base Part Number:	MIC5319
Supplier Device Package:	TSOT-23-5
Package / Case:	SOT-23-5 Thin, TSOT-23-5
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	70dB ~ 60dB (1kHz ~ 10kHz)
Current - Quiescent (Iq):	150µA
Series:	--
Voltage Dropout (Max):	--
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.5V
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Part Status:	Obsolete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

The MIC5319-1.5YD5 TR is a adjustable low dropout (LDO) linear regulator, designed for use in a wide range of applictions with a fast load transient response and ultra-low noise operation. It offers precise accurate output voltage for regulating the power supply output of microprocessors, digital signal processors (DSPs) and various other integrated circuits to ±0.5% accuracy over the operating temperature range while maintaining very low noise levels. The device is available in a thermally enhanced leaded package, suitable for consumer and other space-limited designs.

Application Field

The MIC5319-1.5YD5 TR is well suited for regulating the voltage supply of microprocessors, DSPs and various other integrated circuits with a fast transient response and noise levels lower than most competitors. The device allows for precision voltage regulation and low dropout performance. It provides an adjustable output voltage from 0.9 to 5.5V, making it suitable for regulating voltages of various digital logic families. The MIC5319-1.5YD5 TR offers an ultra-low input-output voltage differential of 0.18V, allowing for greater power efficiency in typical applications. The device also maintains excellent line and load regulation as well as thermal resistances for long life and reliable operation. The MIC5319-1.5YD5 TR is a good choice of interoperability, as it is compatible with many popular digital logic families. It is also suitable for a variety of consumer electronic products and automotive applications. The device is also lead-free compatible with the Restriction of Hazardous Substances (RoHS) directive.

Working Principle

The MIC5319-1.5YD5 TR is an adjustable low dropout (LDO) linear regulator, controlled by a fixed reference voltage typically of 1.2V, built into the device. It features a shutdown logic input which ensures minimal quiescent current when not in use, resulting in reduced power loss. The device operates from an input supply that is between 2.5 to 5.5V. The device is designed to minimize power losses due to the low input-output voltage difference of 0.18V as well as its ability to maintain high accuracy over a wide temperature range. It compensates for the dropout voltage and other output characteristics by monitoring the temperature of the device and adjusts the internal reference voltage to compensate for the variations in output and maintain accurate regulation. The regulation of the output voltage is provided by the use of an internal error amplifier, comparator, and high current output pass transistor. The high current output pass transistor is based on the characteristics of the current sense resistor, which is driven by the feedback voltage of the comparator and the input voltage provided by the error amplifier. All other properties and characteristics of the device are maintained through the use of advanced protection circuitry, such as overload protection and thermal shutdown. This ensures reliable and safe operation over a wide range of input and output conditions, while still maintaining a low dropout voltage in most operating conditions.

Conclusion

The MIC5319-1.5YD5 TR is an adjustable low dropout (LDO) linear regulator, designed for use in a wide range of applications with a fast load transient response and ultra-low noise operation. It offers precise accurate output voltage for regulating the power supply output of microprocessors, digital signal processors (DSPs) and various other integrated circuits. Its excellent interoperability, efficient operating characteristics, and lead-free compatibility make it an excellent choice for consumer electronics, automotive, and other similar applications. The device operates by monitoring the temperature of the device and adjusting the internal reference voltage to compensate for the variations in output and maintain accurate regulation, while the regulation of the output voltage is provided by the use of an internal error amplifier, comparator, and high current output pass transistor. With these advanced features and protection circuitry, the MIC5319-1.5YD5 TR offers reliable and stable operation and performance in most applications.

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