S-13A1A18-A6T1U3 Integrated Circuits (ICs)

Current - Output:	1A
Supplier Device Package:	HSNT-6A
Package / Case:	6-SMD, Flat Lead Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Inrush Current Limit, Over Current, Thermal Shutdown
Control Features:	Enable
PSRR:	65dB (1kHz)
Current - Supply (Max):	90µA
Current - Quiescent (Iq):	1µA
Series:	S-13A1
Voltage Dropout (Max):	0.15V @ 300mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.8V
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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S-13A1A18-A6T1U3 Application Field and Working Principle

The S-13A1A18-A6T1U3 is a Linear voltage regulator specifically designed for applications in the Power Management Integrated Circuit (PMIC) field. It is a low-dropout, low-current, linear voltage regulator that features low noise operation, low quiescent current, fast transient response, and output voltage accuracy of 2.5% max.The S-13A1A18-A6T1U3 operates as a linear voltage regulator and provides a regulated output voltage that is within 2.5% accuracy over the input voltage range. Its low output noise and fast transient response feature make it well suited for noise sensitive applications. The S-13A1A18-A6T1U3’s output current capability of up to 250mA, and its adjustable output voltage feature make it an ideal choice for a variety of application for power management in the embedded systems.The S-13A1A18-A6T1U3 is designed to be an easy to use regulator, which only requires a few external components. The external components needed are a resistor and a capacitor. It has in-built over-temperature protection, short-circuit protection, and current limit protections.The regulator can be operated over a wide input voltage range from 4.4V to 18V. The output voltage is adjustable and it can be set between 0.8V to 4.8V. The S-13A1A18-A6T1U3 has a very low quiescent current and low dropout voltage, which makes it ideal for battery powered devices.Working PrincipleThe S-13A1A18-A6T1U3 works on the principle of creating an internal voltage reference that is compared to the output voltage with an error amplifier. The error amplifier senses the difference in output to reference voltage and adjusts the output voltage accordingly.The S-13A1A18-A6T1U3 is designed with the integration of a NPN power transistor, current source, and a low-noise voltage reference. The NPN power transistor acts as a series pass regulator and provides a means for controlling the output voltage to the desired value.The current source is responsible for establishing the required level of current for the output. This allows the device to accurately control the output current at all times.The voltage reference provides a stable voltage reference to the error amplifier. This allows the device to accurately maintain the output voltage over a wide range of input voltages and loading conditions.The device is designed with a power-good configuration, where the output voltage is monitored by an external circuitry. This allows the device to observe the load, detect any sudden changes in the load, and accordingly change the output voltage to maintain the desired value.All the components on the device are controlled by integrated circuitry, which is highly efficient and helps to ensure the device’s long-term reliability. The device is also equipped with reverse-bias polarity protection which helps to prevent any damage to the device.The S-13A1A18-A6T1U3 is highly reliable and has a long-term operating life. It requires a few external components and provides a stable output voltage under usually-changing operating temperature and input voltage conditions. The S-13A1A18-A6T1U3 is well suited for use in numerous applications requiring a low-noise and accurate voltage regulator.

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