Overview
The LP5912-Q1, specifically the LP5912Q1.8DRVRQ1 model from Texas Instruments, is a high-performance, low-noise, low-dropout (LDO) voltage regulator designed for automotive applications. This device is AEC Q100-qualified and operates over a wide temperature range of -40°C to +125°C, making it suitable for demanding automotive environments. The LP5912-Q1 provides up to 500 mA of output current and is available with fixed output voltages ranging from 0.8 V to 5.5 V in 25-mV steps, with the LP5912Q1.8DRVRQ1 model specifically offering a fixed output voltage of 1.8 V.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Output Current | Up to 500 | mA |
| Output Voltage | 1.8 | V |
| Input Voltage Range | 2.7 to 6.5 | V |
| Dropout Voltage | 170 - 250 mV (for VOUT < 3.3 V), 95 - 180 mV (for VOUT ≥ 3.3 V) | mV |
| Quiescent Current | 35 µA (VEN = 1.3 V, IOUT = 0 mA) | µA |
| Operating Junction Temperature Range | -40°C to +125°C | °C |
| Package Type | WSON-6 (2x2 mm) | |
| Junction-to-Ambient Thermal Resistance | 71.2 °C/W (High-K) | °C/W |
| Power-Good Delay Time | 140 µs | µs |
Key Features
- Low noise and high power supply rejection ratio (PSRR) without a noise bypass capacitor.
- Internal soft-start to limit in-rush current.
- Power-good output with a typical delay of 140 µs.
- Low quiescent current and low line and load transient response.
- Reverse current protection.
- Remote output capacitance placement capability.
- AEC Q100-qualified for automotive applications.
Applications
- Automotive infotainment systems.
- Telematics systems.
- Advanced Driver Assistance Systems (ADAS) cameras and radar.
- Navigation systems.
Q & A
- What is the maximum output current of the LP5912-Q1? The LP5912-Q1 can supply up to 500 mA of output current.
- What is the operating temperature range of the LP5912-Q1? The device operates over a temperature range of -40°C to +125°C.
- What is the typical dropout voltage for the LP5912-Q1? The dropout voltage ranges from 170 to 250 mV for VOUT < 3.3 V and from 95 to 180 mV for VOUT ≥ 3.3 V.
- Does the LP5912-Q1 have a power-good output feature? Yes, the LP5912-Q1 has a power-good output feature with a typical delay of 140 µs.
- What is the quiescent current of the LP5912-Q1? The quiescent current is 35 µA when VEN = 1.3 V and IOUT = 0 mA.
- What type of package does the LP5912Q1.8DRVRQ1 come in? The LP5912Q1.8DRVRQ1 comes in a WSON-6 package with a body size of 2x2 mm.
- Is the LP5912-Q1 suitable for automotive applications? Yes, the LP5912-Q1 is AEC Q100-qualified for automotive applications.
- What is the junction-to-ambient thermal resistance of the LP5912-Q1? The junction-to-ambient thermal resistance is 71.2 °C/W (High-K).
- Does the LP5912-Q1 have internal soft-start? Yes, the LP5912-Q1 has an internal soft-start feature to limit in-rush current.
- Can the LP5912-Q1 be used with remote output capacitance placement? Yes, the LP5912-Q1 allows for remote output capacitance placement.
