Overview
The L4995J is a monolithic integrated 5 V voltage regulator from STMicroelectronics, designed for automotive applications. It features a low drop voltage at currents of up to 500 mA and is available in both 12 and 24 pin packages. The regulator uses a p-channel MOS for voltage regulation and is capable of handling input voltage transients up to 40 V. The L4995J is part of the L4995 family, which includes various versions with different feature sets, such as the L4995A and L4995R, each with programmable reset and watchdog timer capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Operating DC Supply Voltage Range | 5.6 V to 31 V |
| Output Voltage | 5 V |
| Output Current | Up to 500 mA |
| Dropout Voltage | 500 mV |
| Quiescent Current | 3 µA (typical, regulator disabled) |
| Output Voltage Tolerance | ±2% |
| Temperature Range (Tj) | -40 °C to 150 °C |
| Package Types | PowerSSO-12, PowerSSO-24 |
Key Features
- AEC-Q100 qualified for automotive applications
- Low dropout voltage
- Low quiescent current consumption
- Reset circuit sensing of output voltage down to 1 V
- Programmable reset pulse delay with external capacitor
- Programmable watchdog timer with external capacitor
- Thermal shutdown and short circuit protection
- Enable input for enabling/disabling the voltage regulator
Applications
The L4995J is particularly suited for supplying microprocessor systems in automotive applications. Its robust features, such as thermal shutdown, short circuit protection, and programmable reset and watchdog timers, make it an ideal choice for reliable power supply in vehicle systems.
Q & A
- What is the operating DC supply voltage range of the L4995J?
The operating DC supply voltage range is from 5.6 V to 31 V.
- What is the maximum output current of the L4995J?
The maximum output current is up to 500 mA.
- What is the dropout voltage of the L4995J?
The dropout voltage is 500 mV.
- Is the L4995J AEC-Q100 qualified?
Yes, the L4995J is AEC-Q100 qualified for automotive applications.
- What are the package types available for the L4995J?
The L4995J is available in PowerSSO-12 and PowerSSO-24 packages.
- Does the L4995J have thermal shutdown and short circuit protection?
Yes, the L4995J features thermal shutdown and short circuit protection.
- Can the reset pulse delay and watchdog timer be programmed externally?
Yes, both the reset pulse delay and watchdog timer can be programmed using external capacitors.
- What is the temperature range of the L4995J?
The temperature range (Tj) is from -40 °C to 150 °C.
- What is the quiescent current consumption of the L4995J?
The quiescent current consumption is typically 3 µA when the regulator is disabled.
- Is there an enable input for the L4995J?
Yes, the L4995J has an enable input for enabling or disabling the voltage regulator.
