Overview
The TPS75633KTTTG3 is a 5-A low-dropout (LDO) voltage regulator from Texas Instruments, part of the TPS756xx family. This device is designed to provide a fixed output voltage of 3.3 V and is available in a 5-pin TO-263 (KTT) surface-mount package. It is known for its ultra-low dropout voltage, fast transient response, and low quiescent current, making it suitable for a variety of applications requiring high current and low voltage drop.
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 (Disabled) | < 1 | µA |
| Output Voltage Tolerance | 3% | - |
| Thermal Shutdown Junction Temperature | 150 | °C |
| Enable Voltage (High) | > 2 | V |
| Enable Voltage (Low) | < 0.7 | V |
| Package Type | TO-263 (KTT) | - |
| Operating Temperature Range | -40 to 125 | °C |
Key Features
- 5-A low-dropout voltage regulator with ultra-low dropout voltage (typically 250 mV at 5 A)
- Fixed output voltage of 3.3 V, with other versions available at 1.5 V, 1.8 V, 2.5 V, and an adjustable version from 1.22 V to 5 V
- Low quiescent current of 125 µA at full load and less than 1 µA when disabled
- Fast transient response for large load current changes
- Thermal shutdown protection at 150°C junction temperature
- Enable function to shut down the regulator, reducing quiescent current to less than 1 µA
- Available in 5-pin TO-220 (KC) and TO-263 (KTT) surface-mount packages
Applications
The TPS75633KTTTG3 is suitable for various applications requiring high current and low voltage drop, such as:
- Battery-powered systems where low quiescent current is crucial for extended battery life
- High-current linear voltage regulation in industrial, automotive, and consumer electronics
- Power supply systems requiring fast transient response and low dropout voltage
- Embedded systems and microcontrollers needing stable and efficient voltage regulation
Q & A
- What is the output voltage of the TPS75633KTTTG3?
The output voltage of the TPS75633KTTTG3 is 3.3 V.
- What is the maximum output current of the TPS75633KTTTG3?
The maximum output current of the TPS75633KTTTG3 is 5 A.
- What is the typical dropout voltage of the TPS75633KTTTG3 at 5 A output current?
The typical dropout voltage is 250 mV at 5 A output current.
- How does the enable function work on the TPS75633KTTTG3?
The device is enabled when the EN pin is connected to a high voltage level (> 2 V) and disabled when the EN pin is connected to a low voltage level (< 0.7 V).
- What is the quiescent current when the device is disabled?
The quiescent current when the device is disabled is less than 1 µA.
- What is the thermal shutdown junction temperature of the TPS75633KTTTG3?
The thermal shutdown junction temperature is 150°C.
- In what package types is the TPS75633KTTTG3 available?
The TPS75633KTTTG3 is available in a 5-pin TO-263 (KTT) package.
- What is the operating temperature range of the TPS75633KTTTG3?
The operating temperature range is -40°C to 125°C.
- How does the output voltage tolerance vary over line, load, and temperature ranges?
The output voltage tolerance is specified as a maximum of 3% over line, load, and temperature ranges.
- What are some typical applications for the TPS75633KTTTG3?
Typical applications include battery-powered systems, high-current linear voltage regulation in industrial and automotive electronics, and embedded systems requiring stable and efficient voltage regulation.
