ST1L05APU33R Integrated Circuits (ICs)

Current - Output:	1.3A
Base Part Number:	ST1L05
Supplier Device Package:	6-DFN (3x3)
Package / Case:	6-VDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	0°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	--
PSRR:	65dB (120Hz)
Current - Quiescent (Iq):	650µA
Series:	--
Voltage Dropout (Max):	0.5V @ 1.3A
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
Voltage - Input (Max):	7V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction

ST1L05APU33R is a linear three-terminal, single-regulated voltage regulator. It is a type of PMIC (Power Management IC) meant for regulating the voltage to a desired voltage in a plethora of applications. This linear regulator comes in a standard flip-chip package with a power rating of up to 200mW. It is used primarily for regulating a micro-voltage in consumer electronics, commercial products, and industrial equipment.

Application fields

The ST1L05APU33R is well suited for many applications, thanks to its ability to deliver high accuracy and efficiency. It is used in a wide range of consumer electronics such as mobile phones, laptops and tablets, drones, medical gadgets, and consumer products such as lighting and audio equipment.It is also used in automotive, industrial and commercial applications. It works well with multi-layer systems and power conditioning equipment such as welding systems, off-grid inverters, and even photovoltaic systems. It is also used in gaming consoles, monitoring equipment, and test meters.

General Features

The ST1L05APU33R offers several general features that make it suitable for multiple applications. It has an adjustable output range of 0.9V to 4.5V, with a low dropout voltage of 200mV at a load of 1A.It offers excellent temperature characteristics, with an operating temperature range of -40° to 125°. It also offers high accuracy over cycle and time, with a wide input voltage range of 4V to 40V.It also has low quiescent current (IQAP) of 4uA and a low reverse leakage current of 45uA.Other features include high-frequency stability up to 3MHz, current limiting and short-circuit protection, and thermal protection.

Working Principle

The working principle of the ST1L05APU33R is quite simple. It utilizes a linear voltage regulator to reduce the output voltage to the desired level by dissipating excess current as heat. This is done with the help of a regulator block, which consists of two transistors, usually FETs (Field Effect Transistors).The input voltage is given to the series connected transistors of the regulator. The base of the lower transistor is connected to the output voltage, and the base of the upper transistor is grounded.The output voltage is then determined by the voltage difference across the two transistors. If the input voltage is greater than the output voltage, the difference is dissipated as heat.

Conclusion

The ST1L05APU33R is a versatile, linear voltage regulator with high accuracy and efficiency. It is suitable for a wide range of applications and is capable of delivering the desired output voltage with minimal power dissipation. Its low dropout voltage, operating temperature range, and low quiescent currents make it a reliable choice for reducing microvoltage in many systems.

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