Overview
The TPS74501PQWDRVRQ1, part of the TPS745-Q1 series from Texas Instruments, is a 500-mA ultra-low-dropout regulator (LDO) designed with power-good functionality. This device is available in compact packages, including a 6-pin, 2-mm × 2-mm WSON and an 8-pin, 3-mm × 3-mm VSON, both with wettable flanks for optical inspection. It is AEC-Q100 qualified for automotive applications, ensuring reliability over a wide temperature range of –40°C to +125°C. The TPS745-Q1 is known for its low quiescent current, fast line and load transient performance, and high accuracy, making it suitable for various automotive and industrial applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 6-pin WSON, 8-pin VSON |
| Package Size | 2-mm × 2-mm (WSON), 3-mm × 3-mm (VSON) |
| Input Voltage Range | 1.5 V to 6.0 V |
| Output Voltage Range | Fixed: 0.65 V to 5.0 V, Adjustable: 0.55 V to 5.5 V |
| Output Current | 500 mA |
| Dropout Voltage | 160 mV (max) at 500 mA |
| Output Accuracy | ±0.85% (25°C), ±1.5% (max) over temperature |
| Power-Good Output | Open-drain and push-pull options |
| Quiescent Current | 25 µA (typical), 1.5 µA (shutdown) |
| Thermal Resistance (θJA) | 80.3°C/W (6-pin WSON), 55.5°C/W (8-pin VSON) |
| Operating Temperature Range | –40°C to +125°C |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade 1: –40°C to +125°C.
- Ultra-low dropout voltage of 160 mV (max) at 500 mA.
- High power supply rejection ratio (PSRR) of 45 dB at 100 kHz.
- Power-good output options: open-drain and push-pull.
- Low quiescent current: 25 µA (typical), 1.5 µA (shutdown).
- Stable with small ceramic output capacitors (1 µF or larger).
- Active output discharge and functional safety-capable.
- Integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features.
- Internal foldback current limit to reduce thermal dissipation during short-circuit events.
Applications
- Automotive head units
- Front and rear cameras
- Automotive cluster displays
- Telematics control units
- Medium and short-range radar systems
Q & A
- What is the TPS74501PQWDRVRQ1? The TPS74501PQWDRVRQ1 is a 500-mA ultra-low-dropout regulator (LDO) with power-good functionality from Texas Instruments.
- What are the available package types for the TPS745-Q1? The device is available in 6-pin WSON and 8-pin VSON packages.
- What is the input voltage range of the TPS745-Q1? The input voltage range is from 1.5 V to 6.0 V.
- What are the output voltage options for the TPS745-Q1? The output voltage can be fixed (0.65 V to 5.0 V) or adjustable (0.55 V to 5.5 V).
- What is the maximum dropout voltage of the TPS745-Q1? The maximum dropout voltage is 160 mV at 500 mA.
- Is the TPS745-Q1 suitable for automotive applications? Yes, it is AEC-Q100 qualified for automotive applications.
- What are the power-good output options for the TPS745-Q1? The device offers open-drain and push-pull power-good output options.
- What is the typical quiescent current of the TPS745-Q1? The typical quiescent current is 25 µA.
- Does the TPS745-Q1 have integrated protection features? Yes, it includes thermal shutdown, current limit, and undervoltage lockout (UVLO) features.
- What are some common applications of the TPS745-Q1? Common applications include automotive head units, cameras, cluster displays, telematics control units, and radar systems.
