Overview
The TPS76733QDR is a fast-transient-response, low-dropout linear voltage regulator from Texas Instruments. This device is part of the TPS767xx family, which is designed to provide high performance at a reasonable cost. The TPS76733QDR is specifically configured to output a fixed voltage of 3.3V. It features a PMOS pass element, which results in very low quiescent current that remains constant over the full load range, making it ideal for battery-powered systems and applications requiring low power consumption.
Key Specifications
| Parameter | Test Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Output Voltage | TJ = 25°C, 4.3 V < VI < 10 V | 3.2346 | 3.3 | 3.366 | V |
| Output Voltage Tolerance | TJ = −40°C to 125°C | −2% | 2% | % | |
| Dropout Voltage | IO = 1 A, TJ = 25°C | 350 | 575 | mV | |
| Quiescent Current | EN = 0 V, IO = 0 mA to 1 A | 85 | 125 | µA | |
| Load Regulation | IO = 1 A, TJ = 25°C | 3 | mV | ||
| Output Noise Voltage | Co = 10 µF, TJ = 25°C | 55 | µVrms | ||
| Thermal Shutdown Junction Temperature | 150 | °C | |||
| Package Type | SOIC (8-pin) |
Key Features
- Low Dropout Voltage: Down to 230 mV at 1 A for some versions, with the TPS76733QDR typically at 350 mV at 1 A.
- Ultralow Quiescent Current: Typically 85 µA over the full range of output current, which is independent of output loading.
- Fast Transient Response: Ensures stable output voltage during rapid changes in load current.
- High Accuracy: Output voltage tolerance of ±2% over specified conditions.
- Shutdown Mode: Reduces quiescent current to 1 µA when enabled.
- Thermal Shutdown Protection: Protects the device from overheating by shutting down at a junction temperature of 150°C.
- Open Drain Power-On Reset: Initiates a reset in microcomputer and microprocessor systems during undervoltage conditions with a 200-ms delay.
Applications
- Battery-Powered Systems: The 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 where power efficiency is crucial.
- Industrial Control Systems: Can be used in various industrial applications requiring stable and efficient voltage regulation.
- Automotive Systems: Applicable in automotive electronics where robust and efficient voltage regulation is necessary.
Q & A
- What is the output voltage of the TPS76733QDR?
The TPS76733QDR outputs a fixed voltage of 3.3V.
- What is the typical quiescent current of the TPS76733QDR?
The typical quiescent current is 85 µA.
- What is the dropout voltage of the TPS76733QDR at 1 A?
The dropout voltage at 1 A is typically 350 mV.
- Does the TPS76733QDR have thermal shutdown protection?
- How does the shutdown mode affect the quiescent current?
The shutdown mode reduces the quiescent current to 1 µA.
- What is the purpose of the open drain power-on reset feature?
The open drain power-on reset feature initiates a reset in microcomputer and microprocessor systems during undervoltage conditions with a 200-ms delay.
- In what package types is the TPS76733QDR available?
The TPS76733QDR is available in an 8-pin SOIC package.
- What is the output voltage tolerance of the TPS76733QDR?
The output voltage tolerance is ±2% over specified conditions.
- Is the TPS76733QDR suitable for battery-powered systems?
- What is the typical load regulation of the TPS76733QDR?
The typical load regulation is 3 mV at 1 A.
