The "TLV75533PDBVR" is a low dropout (LDO) regulator IC produced by Texas Instruments. The part number corresponds to a 3.3V, 500mA output voltage, low dropout voltage regulator in a Power PAD™ package.
TLV75533PDBVR Pinout and Function Description
The TLV75533PDBVR comes in a 20-pin package, typically in a TSSOP (Thin Shrink Small Outline Package). Below is a detailed explanation of the pin functions and their specific purposes:
Pin Number Pin Name Pin Function Description 1 IN Input voltage pin. This pin receives the input voltage for the LDO regulator. 2 IN Input voltage pin, part of the differential input pair. 3 GND Ground pin, the reference for all voltages. 4 GND Ground pin, second connection to the ground. 5 NC No connection, not internally used. 6 VOUT Output voltage pin. This pin supplies the regulated output voltage. 7 VOUT Output voltage pin, part of the differential output pair. 8 EN Enable pin. A high signal on this pin turns on the LDO, and a low signal disables it. 9 FB Feedback pin. This pin is connected to a voltage divider from the output to set the output voltage. 10 VIN Input voltage, second connection for power supply input. 11 NC No connection, not internally used. 12 VOUT Output voltage, part of the differential output pair. 13 GND Ground pin, part of the power return path. 14 VOUT Output voltage pin, provides stable 3.3V output. 15 NC No connection. 16 GND Ground pin, the reference point for voltage. 17 VOUT Output voltage, part of the differential output. 18 VOUT Output voltage pin, stabilizes the output. 19 VOUT Output voltage, second pin for output stability. 20 NC No connection.Explanation of TLV75533PDBVR Pin Functions:
Input Pins (IN): These pins receive the input voltage (e.g., 5V or higher) for the regulator. This voltage will be regulated down to 3.3V. These are critical to ensure a stable input voltage. Ground Pins (GND): These pins provide a common ground reference for the entire circuit. A good, low-impedance connection to ground is important for the LDO's stable operation. Output Pins (VOUT): These pins provide the regulated output voltage (3.3V in this case). Multiple pins are provided for stability and power handling. These pins must be connected to the circuit requiring the regulated voltage. Enable Pin (EN): This pin allows you to turn the regulator on or off. A logic high signal enables the regulator, and a logic low disables it. Feedback Pin (FB): This pin is used in conjunction with an external resistor divider to set the output voltage. By adjusting the ratio of resistors, you can change the regulated output value.20 Frequently Asked Questions (FAQ) for TLV75533PDBVR:
What is the input voltage range for the TLV75533PDBVR? The input voltage range for the TLV75533PDBVR is typically 2.3V to 5.5V.
What is the output voltage of the TLV75533PDBVR? The TLV75533PDBVR provides a regulated 3.3V output voltage.
How do I enable or disable the TLV75533PDBVR? The TLV75533PDBVR can be enabled by applying a high logic level (typically >1.5V) to the EN pin. A low logic level (typically <0.5V) disables the regulator.
What is the maximum output current of the TLV75533PDBVR? The TLV75533PDBVR can supply up to 500mA of output current.
What are the typical dropout voltage specifications? The typical dropout voltage of the TLV75533PDBVR is 40mV at 100mA load current and 150mV at 500mA load current.
What is the purpose of the FB pin? The FB pin is used for setting the output voltage using an external resistor divider. This feedback pin ensures the output voltage stays stable.
What is the package type of the TLV75533PDBVR? The TLV75533PDBVR comes in a 20-pin TSSOP package.
What is the maximum quiescent current? The maximum quiescent current of the TLV75533PDBVR is typically 30µA.
What is the thermal shutdown temperature for the TLV75533PDBVR? The thermal shutdown temperature is typically 150°C.
How can I improve the transient response of the TLV75533PDBVR? You can add capacitor s to the input and output pins to improve transient response. A typical setup includes a 1µF ceramic capacitor on the input and a 10µF capacitor on the output.
Can the TLV75533PDBVR operate with a low input voltage? Yes, the TLV75533PDBVR is designed to work with low input voltages starting from 2.3V.
What is the recommended output capacitor for the TLV75533PDBVR? The recommended output capacitor is typically 10µF (ceramic).
What is the maximum power dissipation for the TLV75533PDBVR? The maximum power dissipation is dependent on the input voltage, output voltage, and load current. Ensure that the thermal management system can handle the power dissipation.
Is the TLV75533PDBVR suitable for battery-powered applications? Yes, the TLV75533PDBVR is suitable for battery-powered applications due to its low dropout voltage and low quiescent current.
What type of protection does the TLV75533PDBVR offer? The TLV75533PDBVR includes thermal shutdown, current limit, and under-voltage lockout protection.
How stable is the output voltage with varying load currents? The output voltage of the TLV75533PDBVR is very stable even with varying load currents, thanks to its internal feedback mechanism.
Can the TLV75533PDBVR handle high capacitive loads? Yes, it is capable of handling capacitive loads up to 100µF.
What is the typical efficiency of the TLV75533PDBVR? The efficiency of the TLV75533PDBVR is directly related to the ratio of input to output voltage and load current. It can reach efficiencies as high as 90% under certain conditions.
What is the output ripple of the TLV75533PDBVR? The output ripple is typically very low due to the nature of the LDO, generally in the millivolt range.
How should the GND pins be connected in a PCB layout? The GND pins should be connected to a solid ground plane with low impedance to ensure stable operation.
This table and FAQ provide a complete overview of the pin functions, specifications, and the most common questions about the TLV75533PDBVR, ensuring that all key aspects of this device are covered thoroughly.
