Overview
The TPS75701KTTRG3 is a 3-A low-dropout (LDO) voltage regulator from Texas Instruments, part of the TPS757xx family. This device is available in an adjustable output version, allowing the output voltage to be programmed from 1.22 V to 5 V using an external resistor divider. It is designed to provide high current with low dropout voltage, making it suitable for a variety of power management applications. The regulator features fast transient response, low quiescent current, and integrated power-good (PG) and enable (EN) functions.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | TPS75701KTTRG3 |
| Output Configuration | Positive |
| Output Type | Adjustable |
| Number of Regulators | 1 |
| Voltage - Input (Max) | 5.5 V |
| Voltage - Output (Min/Fixed) | 1.22 V |
| Voltage - Output (Max) | 5 V |
| Current - Output | 3 A |
| Current - Quiescent (Iq) | 125 µA (typical at full load) |
| Operating Temperature Range | -40°C to 125°C |
| Package / Case | TO-263-5, DDPAK/TO-263-5 |
| Protection Features | Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO) |
| Control Features | Enable, Power Good |
| Voltage Dropout (Typ) | 150 mV at 3 A |
| PSRR @ 100Hz | 62 dB |
Key Features
- 3-A Low-Dropout Voltage Regulator with adjustable output from 1.22 V to 5 V
- Low Dropout Voltage: Typically 150 mV at 3 A
- Low Quiescent Current: 125 µA (typical at full load)
- Fast Transient Response for large load current changes
- Integrated Power-Good (PG) Status Output: Open drain, active low
- Enable (EN) Function: Allows the regulator to be enabled or shut down
- Thermal Shutdown Protection: Junction temperature up to 150°C
- Protection Features: Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
- Available in 5-Pin TO-220 and TO-263 Surface-Mount Packages
Applications
The TPS75701KTTRG3 is suitable for a variety of applications requiring high current and low dropout voltage, including:
- Battery-Powered Systems: Due to its low quiescent current and high efficiency, it is ideal for battery-powered devices
- Power Management in Embedded Systems: It can be used to regulate power in microcontrollers, FPGAs, and other embedded systems
- Automotive and Industrial Systems: The device's wide operating temperature range and robust protection features make it suitable for automotive and industrial applications
- Telecommunications and Networking Equipment: It can be used to power various components in telecommunications and networking devices
Q & A
- What is the maximum output current of the TPS75701KTTRG3?
The maximum output current is 3 A
- What is the typical dropout voltage of the TPS75701KTTRG3 at 3 A output current?
The typical dropout voltage is 150 mV at 3 A
- What is the operating temperature range of the TPS75701KTTRG3?
The operating temperature range is -40°C to 125°C
- What are the control features of the TPS75701KTTRG3?
The device features an enable (EN) function and a power-good (PG) status output
- What types of protection does the TPS75701KTTRG3 offer?
The device offers over current, over temperature, reverse polarity, and under voltage lockout (UVLO) protection
- How is the output voltage of the TPS75701KTTRG3 adjusted?
The output voltage can be adjusted using an external resistor divider from 1.22 V to 5 V
- What is the typical quiescent current of the TPS75701KTTRG3?
The typical quiescent current is 125 µA at full load
- What package types are available for the TPS75701KTTRG3?
The device is available in 5-Pin TO-220 and TO-263 surface-mount packages
- What is the power supply ripple rejection (PSRR) of the TPS75701KTTRG3 at 100 Hz?
The PSRR at 100 Hz is 62 dB
- How does the power-good (PG) status output work?
The PG terminal is an open drain, active low output that indicates the status of the output voltage, going low when the output voltage reaches approximately 91% of the regulated voltage and high when it falls below approximately 89%
