Overview
The L5150CSTR is a low dropout linear voltage regulator produced by STMicroelectronics, designed for automotive applications. It features microprocessor control functions including power on reset, low voltage reset, and early warning. The regulator is known for its high output voltage accuracy of ±2% over a wide temperature range and under various line and load conditions. The typical quiescent current is 55 μA at very low output current, and the device operates within a DC supply voltage range of 5.6 V to 40 V. The L5150CSTR is AEC-Q100 qualified, ensuring it meets stringent automotive standards for reliability and performance.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| DC Supply Voltage (Vs) | 5.6 to 40 | V |
| Output Voltage (Vo) | 5 V ±2% | V |
| Maximum Output Current (Io) | 150 mA | mA |
| Quiescent Current (Iq) | 55 μA | μA |
| Dropout Voltage (Vdp) | 0.5 V @ 150 mA | V |
| Operating Temperature Range | -40 °C to 150 °C | °C |
| Package | SO-8 |
Key Features
- AEC-Q100 qualified for automotive applications
- Operating DC supply voltage range: 5.6 V to 40 V
- Low dropout voltage
- Low quiescent current consumption
- Precision output voltage: 5 V ±2%
- Reset circuit sensing the output voltage
- Programmable reset pulse delay with external capacitor
- Adjustable reset threshold down to 3.5 V
- Early warning circuit
- Very wide stability range with low-value output capacitor
- Thermal shutdown and short-circuit protection
- Wide temperature range (Tj = -40 °C to 150 °C)
Applications
The L5150CSTR is designed for various automotive applications where reliable and precise voltage regulation is crucial. It is suitable for use in power systems of vehicles, including those requiring microprocessor control functions such as power on reset, low voltage reset, and early warning. The device's ability to operate over a wide temperature range and its robust protection features make it ideal for harsh automotive environments.
Q & A
- What is the typical quiescent current of the L5150CSTR?
The typical quiescent current is 55 μA at very low output current.
- What is the operating DC supply voltage range of the L5150CSTR?
The operating DC supply voltage range is from 5.6 V to 40 V.
- What is the maximum output current of the L5150CSTR?
The maximum output current is internally limited to 150 mA).
- How accurate is the output voltage of the L5150CSTR?
The output voltage accuracy is ±2% over a wide temperature range and under various line and load conditions).
- What protection features does the L5150CSTR have?
The device features thermal shutdown, short-circuit protection, and adjustable reset threshold).
- What is the purpose of the early warning circuit in the L5150CSTR?
The early warning circuit monitors the input voltage and compares it with an internal voltage reference, providing an early warning signal if the input voltage drops below a certain threshold).
- How can the reset threshold be adjusted in the L5150CSTR?
The reset threshold can be adjusted down to 3.5 V using an external voltage divider connected to the Res_Adj pin).
- What is the package type of the L5150CSTR?
The L5150CSTR is available in an SO-8 package).
- Is the L5150CSTR AEC-Q100 qualified?
Yes, the L5150CSTR is AEC-Q100 qualified, making it suitable for automotive applications).
- What is the operating temperature range of the L5150CSTR?
The operating temperature range is from -40 °C to 150 °C).
