L99VR02J [STMicroelectronics]

L99VR02J is a low dropout linear voltage regulator designed for automotive applications available in PowerSSO-12 packages. The LDO delivers up to 500 mA of load current. It consumes as low as 1 μA of quiescent current when the regulator is disabled. The input is 40 V tolerant to withstand load dump, while the operating input voltage range is between 2.15 V and 28 V.

The L99VR02J can be configured, through SELx pins, to generate a fixed selectable output voltage (0.8 V; 1.2 V; 1.5 V; 1.8 V; 2.5 V; 2.8 V; 3.3 V or 5 V). High output voltage accuracy (±2%) is kept over wide temperature range, line, and load variation.

The L99VR02J features enable, reset, autonomous watchdog, advanced thermal warning, fast output discharge, and I_short control. The regulator output current is internally limited. The device is protected against short-circuit and overload, besides it features over temperature protection. The short current value is configurable by an external resistance.

The L99VR02J can operate both in post regulation, attached to a preregulated voltage or directly connected to the battery.

• AEC-Q100 qualified
• Operating DC power supply voltage range from 2.15 V to 28 V
• Battery and post regulation operating modes are allowed
• Low dropout voltage
• Low quiescent current consumption
• User-selectable output voltage (0.8 V; 1.2 V; 1.5 V; 1.8 V; 2.5 V; 2.8 V; 3.3 V or 5 V)
• Output voltage precision ±2%
• Enable input for enabling/disabling the voltage regulator
• Output voltage monitoring with reset output
• Negligible ESR effect on output voltage stability for load capacitor
• Programmable autonomous watchdog through external capacitor
• Undervoltage lockout UVLO
• Fast output discharge
• Thermal shutdown and short-circuit current limitation
• Advanced thermal warning and output overvoltage diagnostic
• Programmable short-circuit output current
• Wide operating temperature range (T_J = -40 °C to 175 °C)
• Limited documentation available for customers that need support when dealing with ASIL requirements as per ISO 26262