TPS793475DBVR

Current - Output:	200mA
Base Part Number:	TPS793475
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 150°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	70dB ~ 43dB (100Hz ~ 100kHz)
Current - Quiescent (Iq):	220µA
Series:	--
Voltage Dropout (Max):	0.13V @ 200mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	4.75V
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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TPS793475DBVR application field and working principleThe TPS793475DBVR is a low-dropout (LDO) voltage regulator from Texas Instruments that efficiently reduces the voltage of a relatively higher voltage to a lower voltage for a variety of applications.The device is rated for a 3A output current and comes in a tiny SOT223-3 package, with a footprint of less than 2.5mm2. The ULDO (Ultra Low Dropout) architecture of the regulator ensures low dropout voltage (115mV) even at light loads. This allows the device to drive higher currents with only a small input-output differential voltage.The TPS793475DBVR has a wide input voltage range of 2.7 V to 5.5 V, allowing it to operate with both unregulated voltage inputs (such as Li batteries and micro-USB) and regulated inputs. It can output a fixed voltage of between 0.8 V and 3.3 V, with a minimum output voltage accuracy of ±2 %. The device is also relatively insensitive to step changes in input voltage and load, decreasing output voltage change to as little as 25 mV, which makes it suitable for use in applications with small changes in operating conditions.The TPS793475DBVR also features internal current limiting, thermal shutdown (TSD), and a Power-Good (PG) output signal. The device also offers high power supply rejection and low output noise under a variety of loading conditions.The device is designed to meet automotive and portable applications requiring efficient voltage regulation, such as laptops, mobile phones and cameras that use Li-ion batteries as their energy source. Additionally, it can be used in PCS base stations, POS terminals, as well as industrial and communications equipment.The TPS793475DBVR utilizes a linear regulator architecture that works via feedback control. The device has two major components, the control circuit and pass transistors. The control circuit senses the voltage difference between its input and output, and then releases a fixed amount of current to the pass transistors, which in turn regulate the voltage in the output. The amount of current transferred to the output is directly proportional to the input-output voltage difference. By keeping a sufficient input-output differential between its two terminals, the linear regulator is able to provide a constant, reliable output voltage despite changes in the load or input voltage.In conclusion, the TPS793475DBVR from Texas Instruments is a low-dropout voltage regulator that offers efficient voltage reduction with a wide input voltage range, high line and load transient response, and low dropout voltage. With a small SOT223-3 footprint and internal current limiting, thermal shutdown and Power-Good output signal, the device is suitable for automotive and portable applications requiring efficient voltage regulation. The device uses a linear regulator architecture to precisely regulate output voltage and reduce any changes in load or input voltage.

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