TPS71709QDRVRQ1 Integrated Circuits (ICs)

Voltage Dropout (Max):	0.3V @ 150mA
Supplier Device Package:	6-SON (2x2)
Package / Case:	6-WDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
Control Features:	Enable
PSRR:	70dB ~ 45dB (100Hz ~ 1MHz)
Current - Quiescent (Iq):	100µA
Current - Output:	150mA
Series:	Automotive, AEC-Q100
Voltage - Output (Max):	--
Voltage - Output (Min/Fixed):	0.9V
Voltage - Input (Max):	6.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active
Packaging:	Tape & Reel (TR)

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TPS71709QDRVRQ1 Application Field and Working PrincipleThe Texas Instruments TPS71709QDRVRQ1 is a high-precision, low power, low dropout, linear voltage regulator. It is a fixed-output linear voltage regulator in an 8-pin, PowerPad SOIC package.ApplicationsTPS71709QDRVRQ1 is suitable for applications such as wireless communication systems, battery-powered systems, medical electronics and computer industries. It is designed to provide a low noise, low dropout, low power, and high precision voltage output.TPS71709QDRVRQ1 also provides excellent transient response and line regulation. Its output voltage range is from 1.2V to 5V. It has a low operating current of 2.5 mA and a maximum supply current of 5 mA.Features• Wide 4.5V to 5.5V input voltage range• Output voltage range of 1.2V to 5V• Low operating current of 2.5mA• Low dropout voltage of 150mV• High accuracy of ±0.5%• High output current up to 500mA• Fast transient response time of 3.2µs• Low quiescent current of 1µA in shutdown mode• Temperature compensated current limit• Thermal shutdown protectionWorking PrincipleThe TPS71709QDRVRQ1 is a linear regulator. It consists of an internal power MOSFET, error amplifier, reference voltage source, current limit, thermal protection, and enable control circuit. The input voltage is applied across the device which is then regulated by the internal PMOS transistor connected to the load. The PMOS transistor is biased by comparing the input voltage, reference voltage, and feedback voltage as supplied by the load. Error amplifier amplifies the difference between the reference and feedback voltage, which determines the gate voltage of the PMOS transistor.The reference voltage is provided by an internal bandgap reference. The PMOS transistor turns on or off depending on the feedback voltage and gate voltage. The gate voltage of the PMOS is then regulated to maintain the desired output voltage.In addition to controlling the PMOS transistor, TPS71709QDRVRQ1 also incorporates a temperature compensated current-limit circuit. This limit circuit monitors the device’s power dissipation by measuring the voltage drop across the feedback resistor.ConclusionThe TPS71709QDRVRQ1 is a high precision, low power, low dropout, linear voltage regulator. It provides an output voltage range from 1.2V to 5V and is suitable for a variety of applications such as wireless communication systems, battery-powered systems, medical electronics and computer industries. It features an input voltage range of 4.5V to 5.5V, a low operating current of 2.5mA, low dropout voltage of 150mV, and high accuracy of ±0.5%. It also includes a temperature-compensated current-limiting circuit for protection and a fast response time for fast transient response.

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