Overview
The TPS74301RGWR is a 1.5-A, ultra-low-dropout (LDO) linear regulator produced by Texas Instruments. This device is designed to provide robust power management solutions for a wide variety of applications. It features a track pin that allows the output to track an external supply, which is particularly useful in minimizing stress on ESD structures between the CORE and I/O power pins of processors. The regulator includes an enable input and a power-good output, enabling easy sequencing with external regulators. This flexibility makes it suitable for applications with special start-up requirements, such as FPGAs, DSPs, and other complex systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 0.9V to 5.5V | V |
| Output Voltage Range | 0.8V to 3.6V (adjustable) | V |
| Output Current | 1.5A | A |
| Dropout Voltage | 55mV at 1.5A (typical) | mV |
| Accuracy | 1% over line, load, and temperature | % |
| Operating Temperature Range | -40°C to 125°C | °C |
| Package Type | VQFN (RGW) with 20 pins | - |
| Package Size | 5mm × 5mm × 1mm | mm |
| Junction-to-Ambient Thermal Resistance | 34.7°C/W (new chip) | °C/W |
Key Features
- Track Pin: Allows the output to track an external supply, useful for minimizing stress on ESD structures between the CORE and I/O power pins of processors.
- High Accuracy: 1% accuracy over line, load, and temperature.
- Low Input Voltage: Supports input voltages as low as 0.9V with an external bias supply.
- Adjustable Output: Output voltage is adjustable from 0.8V to 3.6V.
- Ultra-Low Dropout: 55mV at 1.5A (typical).
- Stability with Any Capacitor: Stable with any output capacitor ≥ 2.2µF.
- Excellent Transient Response: Superior transient response, especially for low VIN applications.
- Open-Drain Power-Good Output: Indicates the status of VOUT with an open-drain, active-high output.
- Active High Enable Input: Allows easy sequencing with external regulators.
Applications
The TPS74301RGWR is suitable for a variety of applications that require robust power management, including:
- FPGAs and DSPs: Meets the sequencing requirements of these devices with special start-up needs.
- Processors and Microcontrollers: Minimizes stress on ESD structures between CORE and I/O power pins.
- High-Performance Computing Systems: Provides stable and accurate voltage regulation in demanding environments.
- Industrial and Automotive Systems: Operates over a wide temperature range (-40°C to 125°C), making it suitable for harsh environments.
Q & A
- What is the input voltage range of the TPS74301RGWR?
The input voltage range is from 0.9V to 5.5V.
- What is the maximum output current of the TPS74301RGWR?
The maximum output current is 1.5A.
- What is the dropout voltage of the TPS74301RGWR at 1.5A?
The dropout voltage is 55mV at 1.5A (typical).
- What is the accuracy of the TPS74301RGWR over line, load, and temperature?
The accuracy is 1% over line, load, and temperature.
- What type of package is the TPS74301RGWR available in?
The TPS74301RGWR is available in a VQFN (RGW) package with 20 pins.
- What is the operating temperature range of the TPS74301RGWR?
The operating temperature range is from -40°C to 125°C.
- Does the TPS74301RGWR require an output capacitor for stability?
No, the device is stable with any output capacitor ≥ 2.2µF, and it can even operate without an output capacitor.
- What is the purpose of the track pin on the TPS74301RGWR?
The track pin allows the output to track an external supply, which is useful in minimizing stress on ESD structures between the CORE and I/O power pins of processors.
- How does the power-good output of the TPS74301RGWR function?
The power-good output is an open-drain, active-high output that indicates the status of VOUT. It goes into a high-impedance state when VOUT exceeds the PG trip threshold and is driven to a low-impedance state when VOUT is below this threshold.
- What is the thermal shutdown temperature of the TPS74301RGWR?
The thermal shutdown temperature is 155°C for the legacy chip and 165°C for the new chip.
