S-817A32ANB-CUVT2G

Voltage Dropout (Max):	0.41V @ 10mA
Supplier Device Package:	SC-82AB
Package / Case:	SC-82A, SOT-343
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C (TA)
Protection Features:	Short Circuit
Control Features:	--
PSRR:	--
Current - Quiescent (Iq):	2.5µA
Current - Output:	50mA
Series:	S-817
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.2V
Voltage - Input (Max):	10V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Not For New Designs
Packaging:	Tape & Reel (TR)

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S-817A32ANB-CUVT2G Application Field and Working Principle

Introduction

The S-817A32ANB-CUVT2G is one of the recent Voltage Regulators released under Texas Instruments\' Power Management (PMIC) family. It belongs to the sub-category of Linear Voltage Regulators, and is designed to regulate and convert voltages between 2.8V to 7.5V of different digital and analog circuits. This voltage regulator is packaged in a very small and cost effective 2x2mm QFN package that makes it ideal for low power applications including portable devices and battery powered systems, where power efficiency is a required.

Application Fields

The S-817A32ANB-CUVT2G is a 2-A low dropout voltage regulator that is suited for point-sourcing in various portable applications and platforms such as, but not limited to, portable medical devices, wearable sensors, gaming controllers, cellular handsets and internet of things (IoT) applications. The wide range of voltages that it can convert, from 2.8-7.5V, make it a suitable choice for applications where high voltages need to be regulated down to lower portable friendly voltages.

S-817A32ANB-CUVT2G Features

The main feature that makes the S-817A32ANB-CUVT2G an ideal choice for low power portable applications is its extremely low quiescent current of 17μA. Furthermore, it features an ultra-low dropout voltage of only 130mV at load currents of 2A, making it one of the most efficient voltage regulators. Other features include a wide range of operating temperatures from -40°C to +125°C, power good signal indicator (PG0), under voltage lockout (UVLO) and over voltage protection (OVP).

S-817A32ANB-CUVT2G Working Principle

The S-817A32ANB-CUVT2G is an ideal diode linear voltage regulator, meaning that it uses a diode and a linear circuit to regulate the incoming voltage to a desired voltage level. The circuit consists of an input voltage, a reference voltage and a feedback voltage. When an input voltage higher than the reference voltage is applied, the diode acts as an open switch and the regulator acts as a resistor in order to limit the flow of current, thus dropping a part of the input voltage, adjusting it to the desired regulated voltage. Furthermore, the reference voltage is adjustable via external feedback, allowing users to tailor the output voltage level.

Conclusion

The S-817A32ANB-CUVT2G is a versatile low dropout voltage regulator from Texas Instruments\' PMIC family. Its small form factor and the extended range of operational voltages makes it an ideal choice for portable devices and battery-powered systems that require high power efficiency. Furthermore, its low quiescent current, high power efficiency and adjustable reference voltage make it an ideal device for applications that need precision regulation.

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