S-1312B26-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):	0.32V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	2.6V
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-1312B26-A4T2U3 is a linear voltage regulator containing an integrated circuit (IC) that regulates the output voltage of a power supply. It is a three-pin voltage regulator module (VRM) which is optimized for exceptional performance in electronic equipment. The module not only provides the required amount of regulated voltage output, but also has built-in features that make it suitable for applications such as line failure, under-voltage and over-voltage. This article will examine the application fields and working principle of the S-1312B26-A4T2U3.

Application Fields

The S-1312B26-A4T2U3 is suitable for use in applications that require low-charge, low-noise, low-power, and high-efficiency. Typical applications include but are not limited to mobile phones, portable computers, personal digital assistants (PDAs), digital cameras and MP3 players. These applications typically require the device to regulate voltage from 5V to 24V in order to operate optimally. The device also features a fast response time, allowing it to be used in applications that require precise local regulation such as switched-mode power supplies (SMPS).The device is rated for operating temperature ranges from -20 degrees Celsius to 85 degrees Celsius, making it suitable for use in a wide range of environmental conditions. Additionally, its low quiescent current and high field-effect transistor (FET) gate drive current make it an ideal choice for use in applications that require precise voltage regulation while consuming minimal power.

Working Principle

The S-1312B26-A4T2U3 is able to perform voltage regulation by means of a linear regulator. This is achieved through the use of an internal amplifier which senses the input voltage and compares it to the reference voltage which is set by a voltage divider. When the input voltage exceeds the reference voltage, the output terminals enable the power mosfets to turn on, allowing current to flow from the input voltage to the output voltage. When the input voltage is lower than the reference voltage, the power mosfets turn off, preventing current from passing through the linear regulator. By using a linear regulator in this way, the output voltage is held at a fixed, predetermined voltage level regardless of changes in the input voltage.

Conclusion

The S-1312B26-A4T2U3 is an ideal solution for providing precise, low-charge, low-noise, low-power voltage regulation in mobile, portable and consumer applications. It has a wide range of operating temperatures and its fast response time makes it suitable for applications requiring precise local regulation. Furthermore, the built-in features such as line failure, under-voltage and over-voltage protection ensure the device is well overhead. By understanding the application fields and working principle, one can easily see why the S-1312B26-A4T2U3 is the best choice for solving voltage regulation problems.

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