Features
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 (L99VR01J
only)
• Undervoltage lockout UVLO
• Fast output discharge
• Thermal shutdown and short-circuit current limitation
• Advanced thermal warning and output overvoltage diagnostic (L99VR01J only)
• Programmable short-circuit output current (L99VR01J only)
• Wide operating temperature range (TJ = -40°C to 175°C L99VR01J only)
• Limited documentation available for customers that need support when dealing
with ASIL requirements as per ISO 26262

Description
L99VR01 is a low dropout linear voltage regulator designed for automotive
applications available in SO-8 and in PowerSSO-12 packages. The LDO delivers
up to 200 mA of load current and 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 L99VR01
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
L99VR01 features enable, reset, autonomous watchdog, advanced thermal warning,
fast output discharge and IShort control (IShort control, autonomous watchdog and
advanced thermal warning are available only for the L99VR01J). The regulator output
current is internally limited so that 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 in the L99VR01J version. The L99VR01
can operate both in post regulation, attached to a pre-regulated voltage or directly
connected to battery.