Overview
The TPS75501KTTRG3 is a part of the TPS755xx family of 5-A low-dropout (LDO) voltage regulators produced by Texas Instruments. This specific model, TPS75501KTTRG3, is an adjustable version of the LDO regulator, capable of supplying 5 A of output current. It is available in a 5-pin TO-263 (KTT) surface-mount package.
The device features an adjustable output voltage range from 1.22 V to 5 V, making it versatile for various applications. It includes an enable input for shutdown control, an open-drain power-good (PG) status output for fixed options, and thermal shutdown protection for reliability.
The TPS75501KTTRG3 is designed for fast transient response and has a low quiescent current of 125 µA at full load, dropping to less than 1 µA when disabled. This regulator is suitable for applications requiring high current output with minimal voltage drop.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Output Voltage Range | 1.22 V to 5 V | Adjustable |
| Output Current | Up to 5 A | |
| Dropout Voltage | Typically 250 mV at 5 A | TPS75533, IO = 5 A, VO = 3.3 V |
| Quiescent Current | Typically 125 µA at full load | |
| Quiescent Current (Shutdown) | Less than 1 µA | |
| Output Voltage Tolerance | 3% over line, load, and temperature | |
| Thermal Shutdown Junction Temperature | 150°C | |
| Package Type | 5-pin TO-263 (KTT) | |
| Operating Junction Temperature Range | -40°C to 125°C |
Key Features
- Adjustable Output Voltage: The TPS75501KTTRG3 allows for an adjustable output voltage range from 1.22 V to 5 V using an external resistor divider.
- High Output Current: Capable of supplying up to 5 A of output current.
- Low Dropout Voltage: Typically 250 mV at 5 A, ensuring minimal voltage drop.
- Low Quiescent Current: 125 µA at full load and less than 1 µA in shutdown mode.
- Fast Transient Response: Designed to handle large load current changes efficiently.
- Thermal Shutdown Protection: Protects the device from overheating by shutting down at 150°C junction temperature.
- Power-Good (PG) Status Output: Available for fixed-output versions, indicating the status of the output voltage.
- Enable Input: Allows for shutdown control via the enable input.
Applications
The TPS75501KTTRG3 is suitable for a variety of applications requiring high current output with low dropout voltage, including:
- Power Supplies: For systems needing regulated voltage with high current capability.
- Industrial Control Systems: Where reliable and efficient voltage regulation is crucial.
- Telecommunications Equipment: To ensure stable voltage supply in communication devices.
- Automotive Systems: For applications requiring robust and reliable voltage regulation.
- Consumer Electronics: In devices that need efficient power management with adjustable voltage outputs.
Q & A
- What is the output voltage range of the TPS75501KTTRG3?
The output voltage range is adjustable from 1.22 V to 5 V.
- What is the maximum output current of the TPS75501KTTRG3?
The device can supply up to 5 A of output current.
- What is the typical dropout voltage of the TPS75501KTTRG3 at 5 A output current?
Typically 250 mV at 5 A output current.
- What is the quiescent current of the TPS75501KTTRG3 at full load and in shutdown mode?
Typically 125 µA at full load and less than 1 µA in shutdown mode.
- What is the thermal shutdown junction temperature of the TPS75501KTTRG3?
The device shuts down at a junction temperature of 150°C.
- What package type is the TPS75501KTTRG3 available in?
The device is available in a 5-pin TO-263 (KTT) surface-mount package.
- What is the operating junction temperature range of the TPS75501KTTRG3?
The operating junction temperature range is -40°C to 125°C.
- Does the TPS75501KTTRG3 have a power-good (PG) status output?
No, the PG status output is available only for fixed-output versions of the TPS755xx family.
- How do you adjust the output voltage of the TPS75501KTTRG3?
The output voltage is adjusted using an external resistor divider connected to the feedback (FB) terminal.
- What is the purpose of the enable (EN) input on the TPS75501KTTRG3?
The enable input allows for shutdown control; the device is enabled when EN is at a logic low and shut down when EN is at a logic high.
