S-1312D22-A4T2U3

Current - Output:	150mA
Supplier Device Package:	HSNT-4-B
Package / Case:	4-SMD, Flat Lead Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Overcurrent, Thermal Shutdown
Control Features:	Enable
PSRR:	70dB (1kHz)
Current - Supply (Max):	30µA
Current - Quiescent (Iq):	1µA
Series:	S-1312
Voltage Dropout (Max):	0.36V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.2V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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IntroductionThe S-1312D22-A4T2U3 is a low-dropout (LDO) linear regulator from the Power Management Integrated Circuit (PMIC) family of products. It is designed for the most demanding applications and can provide exceptional reliability and power efficiency for computer systems, home appliances, telecommunications equipment, and medical devices.ApplicationsThe S-1312D22-A4T2U3 is a versatile device, suitable for a wide range of applications. Its low dropout voltage and fast transient response allows it to be used in a variety of power regulation applications, ranging from digital logic supplying to graphics card operations. It is also suitable for applications demanding high power efficiency, such as low-power-consumption systems, where it can provide better results than bulky alternatives. Additionally, it is frequently used for automotive and industrial applications, primarily because it offers high powerer-dense solutions for both high and low-side power switches.Working PrincipleThe S-1312D22-A4T2U3 is a low-dropout (LDO) linear regulator. It works by stepping down the input voltage (VIN) to output voltage (VOUT) at a fixed ratio inside the chip. It has an adjustable voltage range from 2V to 12V with a maximum output current of 2.2A.The LDO linear regulator is a 3-terminal device. During normal operation, VIN is applied to the input terminal and VOUT is sourced out at the output terminal. A reference voltage fed to the ADJ terminal determines the output voltage. This terminal can be adjusted using external resistors for more precise voltage control.The LDO regulator is designed with a built-in feedback loop to ensure precision output voltage regulation. It continuously monitors the output voltage and adjusts the reference voltage accordingly. Any load or temperature changes are quickly and accurately compensated.When the enabled signal is low, the LDO is disabled, so no power will flow through it. The LDO is also designed to enter a low-power sleep mode in order to extend the battery life of the device, if required.ConclusionThe S-1312D22-A4T2U3, from the Power Management Integrated Circuit (PMIC) family, is a low-dropout, linear voltage regulator. It is versatile and suitable for a variety of applications, including digital logic supplying, graphics card operations, automotive, and industrial purposes. It provides exceptional reliability and power efficiency, and is capable of quickly compensating any load or temperature changes. Additionally, it is designed with a built-in feedback loop to ensure precision output voltage regulation.

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