Overview
The TPS745-Q1, produced by Texas Instruments, is a 500-mA ultra-low-dropout (LDO) voltage regulator designed for automotive applications. It is AEC-Q100 qualified, ensuring reliability over a wide temperature range from -40°C to +125°C. This device is available in two compact packages: a 6-pin, 2-mm × 2-mm WSON package and an 8-pin, 3-mm × 3-mm VSON package with wettable flanks for optical inspection. The TPS745-Q1 is known for its low quiescent current, fast line and load transient performance, and adjustable output voltage range from 0.55 V to 5.5 V, making it a versatile choice for various automotive systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 1.5 V to 6.0 V | V |
| Output Voltage Range | 0.55 V to 5.5 V | V |
| Output Current | 500 mA | A |
| Dropout Voltage (Nominal) | 0.225 V | V |
| Quiescent Current | 50 nA (typical) | A |
| Temperature Range | -40°C to +125°C | °C |
| Package Types | 6-pin WSON, 8-pin VSON | |
| Thermal Shutdown | 170°C (shutdown), 155°C (reset) | °C |
| Accuracy | ±0.85% (max) at 25°C, ±1.5% (max) over temperature | % |
Key Features
- AEC-Q100 qualified for automotive applications
- Low quiescent current and fast line and load transient performance
- Externally adjustable output voltage range from 0.55 V to 5.5 V
- Fixed output voltages for common voltage rails
- Power-good (PG) output for monitoring output voltage status
- Stable with small ceramic output capacitors
- 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 input voltage range of the TPS745-Q1?
The input voltage range of the TPS745-Q1 is from 1.5 V to 6.0 V.
- What is the maximum output current of the TPS745-Q1?
The maximum output current of the TPS745-Q1 is 500 mA.
- What are the package options for the TPS745-Q1?
The TPS745-Q1 is available in 6-pin WSON and 8-pin VSON packages.
- What is the temperature range for the TPS745-Q1?
The TPS745-Q1 operates over a temperature range from -40°C to +125°C.
- Does the TPS745-Q1 have power-good functionality?
- What are the key protection features of the TPS745-Q1?
The TPS745-Q1 includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) features.
- Is the TPS745-Q1 stable with small ceramic output capacitors?
- What is the quiescent current of the TPS745-Q1?
The quiescent current of the TPS745-Q1 is typically 50 nA.
- What are some common applications for the TPS745-Q1?
- Does the TPS745-Q1 support fixed output voltages?
