S-13R1A19-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, Reverse Current, Thermal Shutdown
Control Features:	Enable
PSRR:	70dB (1kHz)
Current - Supply (Max):	9µA
Current - Quiescent (Iq):	1µA
Series:	S-13R1
Voltage Dropout (Max):	0.28V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	1.9V
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

The S-13R1A19-A4T2U3 is a high precision LDO linear voltage regulator that belongs to the family of PMICs. It has a wide operating current range of 0.2ma to 5.0A and can provide a maximum output voltage of 22V, making it useful for many applications that require tight regulation and high accuracy. The S-13R1A19-A4T2U3 is designed with a high switching frequency to minimize the size of the passive components and to reduce the physical size and weight of the regulator.

Application Field

The S-13R1A19-A4T2U3 is suitable for use in a variety of high voltage and low noise applications, such as high performance LCD displays, notebooks, tablets, medical and instrumentation equipment, and other consumer electronics. The wide input voltage range of 3.5V to 22V makes it ideal for a variety of battery-powered applications, since it can efficiently step down the input voltage and provide stable output voltages.The rated output voltage of the S-13R1A19-A4T2U3 is adjustable to better suit the application. In addition, it has an adjustable voltage tolerance, so the output voltage can be adjusted to within a certain range to help meet all design requirements. The S-13R1A19-A4T2U3 also offers high power efficiency, fast transient response and excellent line and load regulation. It operates with little to no noise, and is also radiation hardened and EMI tested.

Working Principle

The S-13R1A19-A4T2U3 operates on a linear principle, relying on a voltage reference to control the output voltage of the device. It consists of an integrated temperature compensated bandgap reference, an error amplifier, a compensation circuit, and other components.The bandgap reference output is set by an external resistor, and this voltage is compared to the output voltage using an error amplifier. If the output voltage is higher than the reference voltage, the error amplifier will reduce the duty cycle of the integrated current source, thereby lowering the output voltage.Conversely, if the output voltage is below the reference voltage, the error amplifier will increase the duty cycle of the current source, and thus raise the output voltage. This cycle of adjustments is repeated until the output voltage reaches the reference voltage, and is maintained at that level in spite of changes in load and line voltage.The output voltage can be adjusted by changing the value of the external resistor. The S-13R1A19-A4T2U3 also has built-in short circuit protection, over temperature protection, and voltage foldback.

Conclusion

The S-13R1A19-A4T2U3 is a high precision LDO linear voltage regulator that offers a wide operational current range and maximum output voltage of 22V. It is suitable for a variety of high voltage and low noise applications, and provides excellent power efficiency, fast transient response, and excellent line and load regulation with very low noise operation.Operating on a linear principle, it utilises a voltage reference to control its output voltage, which can be adjusted by changing the external resistor. It also has built-in protection mechanisms such as short circuit protection, over temperature protection, and voltage foldback. This makes the S-13R1A19-A4T2U3 a great choice for applications requiring high voltage accuracy and tight regulation.

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