TLV75509PDQNR

Current - Output:	500mA
Supplier Device Package:	4-X2SON (1x1)
Package / Case:	4-XDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Protection Features:	Over Current, Over Temperature
Control Features:	Enable
PSRR:	52dB (1kHz ~ 1MHz)
Current - Quiescent (Iq):	31µA
Series:	--
Voltage Dropout (Max):	0.985V @ 500mA
Voltage - Output (Max):	3.3V
Voltage - Output (Min/Fixed):	0.9V
Voltage - Input (Max):	5.5V
Number of Regulators:	1
Output Type:	Fixed
Output Configuration:	Positive
Part Status:	Active

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TLV75509PDQNR application filed and working principle

TLV75509PDQNR is a low-voltage, low-dropout (LDO) linear voltage regulator manufactured by Texas Instruments (TI). It is a single-channel, ultra-low quiescent current regulator with a high-precision voltage reference, which is ideal for applications such as battery-powered systems, portable medical equipment, wearables, and more.

Overview

The TLV75509PDQNR is designed for low-power, low-voltage systems requiring tight accuracy control. It has a very low dropout voltage of 150mV at full-load current (500mA)and a wide input voltage range of 2.5 V to 5.5 V. Its reference voltage is highly accurate, being only 5 mV away from the expected output voltage, and it can be used to drive several devices simultaneously. The device also offers three adjustable output voltage options of 2.5 V, 3.3 V, and 5 V.

Features and Specifications

The TLV75509PDQNR is a low-quiescent current linear voltage regulator which offers numerous features and specifications, as follows:

• Wide Input Voltage Range: 2.5 V to 5.5 V
• Low Dropout Voltage: 150 mV at 500 mA (typical)
• Highly Accurate Reference Voltage: 5 mV from expected output voltage
• Three Adjustable Output Voltage Options: 2.5 V, 3.3 V, and 5 V
• High PSRR: –90 dB for 200 Hz to 1 MHzbandwidth
• Wide Operating Frequency Range: 400 kHz to 850 kHz
• Thermal Shutdown Protection
• Small Footprint: 2.1mm x 2.1mm

Applications

The TLV75509PDQNR linear voltage regulator can be used in a variety of low-power, low-voltage applications, including:

• Battery-powered systems
• Portable medical devices
• Wireless charging systems
• Wearables
• Portable consumer electronics

Working Principle

The TLV75509PDQNR is based on a regulated series voltage reference, which works in such a way that the output voltage is regulated to a specific level regardless of the input voltage. The reference voltage is created by a voltage divider, with the top resistor being connected to the input voltage and the bottom resistor being connected to ground. The midpoint of the voltage divider is then sent to the error amp, which is connected in negative feedback with the reference voltage. The input voltage is then brought to the error amp and compared to the reference voltage. The output voltage is then adjusted according to how much voltage is required to maintain a difference between the reference voltage and the input voltage.

Conclusion

The TLV75509PDQNR is a low-voltage, low-dropout linear voltage regulator manufactured by Texas Instruments (TI). It is designed for low-power, low-voltage systems requiring tight accuracy control with a wide operating frequency range and a very low quiescent current. It offers high accuracy of the reference voltage, high PSRR, a wide input voltage range, and heat shutdown protection. The TLV75509PDQNR is ideal for applications such as battery-powered systems, portable medical equipment, wearables, and more.

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