S-1313C27-A4T1U3

Current - Output:	200mA
Supplier Device Package:	HSNT-4-A
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:	--
Current - Supply (Max):	1.35µA
Current - Quiescent (Iq):	100nA
Series:	S-1313
Voltage Dropout (Max):	0.38V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.7V
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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Introduction to the S-1313C27-A4T1U3

The S-1313C27-A4T1U3 is a low-dropout (LDO) linear voltage stabilizer offering an adjustable output voltage range of 0.8~5.5V, a maximum continuous output current of 1A, and a dropout voltage of only 200mV. It is an ideal choice for micropower systems, applied in a wide range of fields such as mobile phones, laptops, digital cameras, and other handheld devices.

In the field of power management integrated circuits (PMICs), the S-1313C27-A4T1U3 is classified as a linear voltage regulator, meaning that it provides low-noise and stable output voltage. Linear voltage regulators offer advantages over switching regulators that include low-noise, fast transient response and low parts count, making them a uniquely desirable choice for power system design, especially when precise output voltage is required.

Application Fields and Working Principle of the S-1313C27-A4T1U3

The S-1313C27-A4T1U3 is mainly used in the following application fields, such as:

• Portable, low-power, 3v to 5v applications: The S-1313C27-A4T1U3 is an ideal solution for low-power and low-noise systems, such as portable devices, cameras, and other embedded systems.
• Power management in audio systems: The low dropout voltage and low noise output make the S-1313C27-A4T1U3 a great fit for audio applications.
• Fan speed control: The S-1313C27-A4T1U3 can be used in fan speed control applications, using its highly stable output.
• Automotive and transportation applications: The S-1313C27-A4T1U3 can be utilized in automotive and transportation applications, providing stable and precise voltage regulation.

The core of the S-1313C27-A4T1U3 is the voltage regulator circuit, which is based on the concept of negative feedback. This circuit controls the output voltage or current by comparing the actual output voltage or current to the desired value. The feedback circuit then amplifies the error signal and feeds it back to the voltage regulator.

The S-1313C27-A4T1U3 has an operational amplifier (op-amp) connected to an external feedback resistor in order to sense the output voltage. The op-amp generates a voltage error signal which is proportional to the difference between the output voltage and the reference voltage. This error signal is then amplified and fed back to the voltage regulator through the error amplifier.

The voltage regulator consists of a band-gap reference source and an output voltage control section. The band-gap reference source generates a fixed, temperature-independent reference voltage. The output voltage control section consists of a differential amplifier, which compares the output voltage of the voltage regulator to the error signal. If the output voltage of the regulator is lower than the reference voltage, the signal is amplified and fed back to the regulator, increasing the output voltage. If the output voltage of the regulator is higher than the reference voltage, the signal is inverted and fed back to the regulator, decreasing the output voltage.

The S-1313C27-A4T1U3 is designed for high performance, low noise and low-dropout voltage regulation. It provides fast transient response and excellent load regulation, making it an ideal choice for power supply designs for a wide range of applications.

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