TPS79133DBVT

Current - Output:	100mA
Base Part Number:	TPS79133
Supplier Device Package:	SOT-23-5
Package / Case:	SC-74A, SOT-753
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	70dB ~ 37dB (100Hz ~ 100kHz)
Current - Quiescent (Iq):	250µA
Series:	--
Voltage Dropout (Max):	0.9V @ 100mA
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	3.3V
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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TPS79133DBVT is a 3.3-V LDO linear voltage regulator. It offers an excellent combination of low quiescent current, very low dropout voltage, low noise and tight output voltage tolerance. The device is highly efficient, offers fast transient response, and requires a minimum number of external components. The device is available in a 5-pin SOT23 package.TPS79133DBVT Applications FieldTPS79133DBVT is a 3.3 V linear voltage regulator that provides excellent performance and low quiescent current. Its low quiescent current, excellent output current capability and dropout voltage make it ideal for a wide range of applications, including PC card applications and portable digital devices. It is also suitable for use as a general purpose voltage regulator and provides good transient load current.The device is ideal for use in a wide range of applications such as automotive, telecom and networking, consumer electronics such as mobile phone, MP3 player, PDA, notebook and digital camera and many more. The device is also suitable for use in medical, industrial, automotive and aerospace applications.TPS79133DBVT Working PrincipleThe linear voltage regulator uses a PNP transistor to provide a constant current source across a resistive load. The output voltage is proportional to the applied input voltage and the current gain of the PNP transistor. The current gain of the PNP transistor can be adjusted by varying the base voltage.The external circuit components are chosen such that the corresponding output voltage is as close as possible to the desired regulation set point. The voltage drop across the transistor is usually kept less than 50 mV, and the output voltage is usually in the range of 0.5 to 5.5 V. A bias current is also applied to the transistor to further optimize the regulation behavior. The regulation of the output voltage can also be improved by adding capacitors to the output of the transistor.The linear regulator provides fast and accurate regulation of voltage. It is also very efficient and requires a minimum number of external components. The device is also highly reliable and provides good transient load current for a wide range of applications. The device is also well suited for use in industrial and automotive applications.

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