Overview
The TPS75533KTTTG3 is a 5-A low-dropout (LDO) voltage regulator from Texas Instruments, part of the TPS755xx family. This device is available in a TO-263 (KTT) surface-mount package and is designed to provide a fixed output voltage of 3.3 V. It features an integrated power-good (PG) signal and an enable (EN) pin for controlling the regulator's operation. The TPS75533KTTTG3 is suitable for applications requiring high current output with low dropout voltage and fast transient response.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Voltage | 3.3 | V |
| Output Current | 5 | A |
| Dropout Voltage (Typical at 5 A) | 250 | mV |
| Quiescent Current (Typical at Full Load) | 125 | µA |
| Quiescent Current (Shutdown Mode) | < 1 | µA |
| Output Voltage Tolerance | 3% | |
| Thermal Shutdown Junction Temperature | 150 | °C |
| Operating Junction Temperature Range | -40 to 125 | °C |
| Package Type | TO-263 (KTT) |
Key Features
- Integrated power-good (PG) signal for monitoring output voltage status.
- Enable (EN) pin for controlling the regulator's operation.
- Low dropout voltage of typically 250 mV at 5 A output current.
- Low quiescent current of 125 µA at full load and less than 1 µA in shutdown mode.
- Fast transient response for large load current changes.
- Thermal shutdown protection to prevent overheating.
- Available in TO-263 (KTT) surface-mount package.
Applications
The TPS75533KTTTG3 is suitable for a variety of applications requiring high current output with low dropout voltage, including:
- Battery-powered systems where low quiescent current is crucial for extended battery life.
- Power supply systems in industrial, automotive, and consumer electronics.
- Systems requiring fast transient response and high current capability.
- Applications needing thermal shutdown protection to ensure reliability.
Q & A
- What is the output voltage of the TPS75533KTTTG3?
The output voltage of the TPS75533KTTTG3 is 3.3 V.
- What is the maximum output current of the TPS75533KTTTG3?
The maximum output current is 5 A.
- What is the typical dropout voltage of the TPS75533KTTTG3 at 5 A output current?
The typical dropout voltage is 250 mV at 5 A output current.
- How does the enable (EN) pin control the regulator?
The EN pin enables the regulator when connected to a low-level voltage and shuts it down when connected to a TTL high signal.
- What is the purpose of the power-good (PG) signal?
The PG signal is an open drain output that indicates the status of the output voltage, going low when the output voltage reaches approximately 91% of the regulated voltage.
- What is the quiescent current in shutdown mode?
The quiescent current in shutdown mode is less than 1 µA.
- What is the thermal shutdown junction temperature?
The thermal shutdown junction temperature is 150°C.
- In what package type is the TPS75533KTTTG3 available?
The TPS75533KTTTG3 is available in a TO-263 (KTT) surface-mount package.
- What are some typical applications for the TPS75533KTTTG3?
Typical applications include battery-powered systems, industrial and automotive power supplies, and systems requiring fast transient response and high current capability.
- How does the TPS75533KTTTG3 handle large load current changes?
The TPS75533KTTTG3 features fast transient response to handle large load current changes effectively.
