Overview
The TPS77715PWPG4 is a low-dropout linear voltage regulator from Texas Instruments, part of the TPS777xx family. This regulator is designed to provide a stable output voltage with minimal dropout voltage, making it ideal for battery-powered systems and other applications where low power consumption is crucial. The TPS77715PWPG4 offers a fixed output voltage of 1.5V and is available in a 20-pin PWP package.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Output Voltage | 1.5 V | Fixed |
| Output Current | Up to 750 mA | |
| Dropout Voltage | Typically 260 mV at 750 mA | |
| Quiescent Current | Typically 85 µA | Over full load range |
| Operating Temperature Range | -40°C to 125°C | |
| Output Voltage Tolerance | ±2% over line, load, and temperature | |
| Package Type | 20-pin PWP | |
| Shutdown Current | 1 µA (TTL high on EN) | TJ = 25°C |
| Thermal Shutdown Junction Temperature | 150°C (typ) |
Key Features
- Low Dropout Voltage: Typically 260 mV at 750 mA, ensuring efficient operation in battery-powered systems.
- Low Quiescent Current: Approximately 85 µA over the full load range, independent of output loading.
- Shutdown Mode: Applying a TTL high signal to the EN pin shuts down the regulator, reducing quiescent current to 1 µA.
- No Minimum Load Requirement: Stable operation even at zero load.
- RESET and Power-Good Indicators: The TPS777xx features a RESET output, and the TPS778xx features a power-good (PG) output for monitoring the regulator's status.
- Internal Current Limiting and Thermal Protection: Protects against overcurrent and overheating conditions.
- Adjustable and Fixed Output Versions: The TPS777xx family includes both fixed and adjustable output voltage options.
Applications
The TPS77715PWPG4 is suitable for a variety of applications, including:
- Battery-Powered Systems: Its low quiescent current and low dropout voltage make it ideal for extending battery life.
- Portable Electronics: Suitable for use in handheld devices, smartphones, and other portable electronics.
- Industrial Control Systems: Can be used in industrial control systems where stable voltage regulation is critical.
- Medical Devices: Appropriate for medical devices that require reliable and efficient power management.
Q & A
- What is the output voltage of the TPS77715PWPG4?
The output voltage of the TPS77715PWPG4 is 1.5 V. - What is the maximum output current of the TPS77715PWPG4?
The maximum output current is up to 750 mA. - What is the typical dropout voltage of the TPS77715PWPG4?
The typical dropout voltage is 260 mV at 750 mA. - How does the quiescent current of the TPS77715PWPG4 behave with varying loads?
The quiescent current remains virtually constant at approximately 85 µA over the full load range. - What is the operating temperature range of the TPS77715PWPG4?
The operating temperature range is -40°C to 125°C. - Does the TPS77715PWPG4 require a minimum load for stable operation?
No, the TPS77715PWPG4 is stable even at zero load. - How does the shutdown mode work on the TPS77715PWPG4?
Applying a TTL high signal to the EN pin shuts down the regulator, reducing the quiescent current to 1 µA. - What protection features does the TPS77715PWPG4 have?
The TPS77715PWPG4 features internal current limiting and thermal protection. - Can the output voltage of the TPS77715PWPG4 be adjusted?
No, the TPS77715PWPG4 has a fixed output voltage of 1.5 V, but other models in the TPS777xx family offer adjustable output voltage options. - What is the purpose of the RESET output on the TPS777xx?
The RESET output can be used to monitor the status of the regulator and can drive power-on reset circuitry or serve as a low-battery indicator.
