Overview
The TPS74512PQWDRVRQ1 is a 500-mA ultra-low-dropout regulator (LDO) produced by Texas Instruments. This device is part of the TPS745-Q1 family and is designed for automotive applications, meeting the AEC-Q100 qualification standards. It operates over a wide input voltage range of 1.5 V to 6.0 V and offers both fixed and adjustable output voltage options, ranging from 0.65 V to 5.5 V. The TPS74512PQWDRVRQ1 is available in a compact 6-pin, 2-mm × 2-mm WSON package with wettable flanks, facilitating optical inspection and enhancing thermal performance.
This LDO features high power supply rejection ratio (PSRR) of 45 dB at 100 kHz, ultra-low dropout voltage of 160 mV (max) at 500 mA, and low quiescent current of 25 μA (typical). It also includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO) for robust operation. The device supports fast line and load transient performance and is stable with small ceramic output capacitors, making it suitable for space-constrained designs.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage Range | 1.5 | - | 6.0 | V |
| Output Voltage Range (Fixed) | 0.65 | - | 5.0 | V |
| Output Voltage Range (Adjustable) | 0.55 | - | 5.5 | V |
| Output Current | 0 | - | 500 | mA |
| Dropout Voltage (max at 500 mA, 3.3 VOUT) | - | - | 160 | mV |
| Quiescent Current (typical) | - | 25 | - | μA |
| Quiescent Current (shutdown) | - | 1.5 | - | μA |
| Operating Junction Temperature | -40 | - | 150 | °C |
| Thermal Resistance (RθJA) - WSON | - | - | 80.3 | °C/W |
| Thermal Resistance (RθJA) - VSON | - | - | 55.5 | °C/W |
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.
- Output voltage accuracy of ±0.85% (25°C) and ±1.5% (max) over temperature.
- Power-good output options: open-drain and push-pull.
- Low quiescent current: 25 μA (typical), 1.5 μA (shutdown).
- Active output discharge and integrated thermal shutdown, current limit, and undervoltage lockout (UVLO).
- Stable with small ceramic output capacitors (1 μF or larger).
- Functional Safety-Capable with documentation available to aid in functional safety system design.
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 TPS74512PQWDRVRQ1?
The input voltage range is from 1.5 V to 6.0 V.
- What are the output voltage options for this LDO?
The output voltage can be fixed from 0.65 V to 5.0 V or adjustable from 0.55 V to 5.5 V.
- What is the maximum output current of the TPS74512PQWDRVRQ1?
The maximum output current is 500 mA.
- What is the typical quiescent current of this device?
The typical quiescent current is 25 μA.
- Does the TPS74512PQWDRVRQ1 have power-good functionality?
Yes, it has power-good output options in both open-drain and push-pull configurations.
- What are the thermal resistance values for the WSON and VSON packages?
The thermal resistance (RθJA) is 80.3°C/W for the WSON package and 55.5°C/W for the VSON package.
- Is the TPS74512PQWDRVRQ1 suitable for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What are some common applications for this LDO?
Common applications include automotive head units, front and rear cameras, automotive cluster displays, telematics control units, and medium and short-range radar systems.
- Does the device have integrated protection features?
Yes, it includes integrated thermal shutdown, current limit, and undervoltage lockout (UVLO).
- What is the operating junction temperature range of the TPS74512PQWDRVRQ1?
The operating junction temperature range is from –40°C to 150°C.
