The NCV4269A is a 5.0 V and 3.3 V precision micropower voltage regulator with an output current capability of 150 mA.
The output voltage is accurate within ±2.0% with a maximum dropout voltage of 0.5 V at 100 mA. Low quiescent current is a feature drawing only 190 μA with a 1.0 mA load. This part is ideal for any and all battery operated microprocessor equipment.
Microprocessor control logic includes an active reset output RO with delay and a SI/SO monitor which can be used to provide an early warning signal to the microprocessor of a potential impending reset signal. The use of the SI/SO monitor allows the microprocessor to finish any signal processing before the reset shuts the microprocessor down. The active Reset circuit operates correctly at an output voltage as low as 1.0 V. The Reset function is activated during the power up sequence or during normal operation if the output voltage drops outside the regulation limits.
The reset threshold voltage can be decreased by the connection of an external resistor divider to the RADJ lead. The regulator is protected against reverse battery, short circuit, and thermal overload conditions. The device can withstand load dump transients making it suitable for use in automotive environments. The device has also been optimized for EMC conditions.

FEATUREs
• 5.0 V and 3.3 V Output Voltage Options, ± 2.0% Accuracy
• Low 190 μA Quiescent Current
• Active Reset Output Low Down to VQ = 1.0 V
• Adjustable Reset Threshold
• 150 mA Output Current Capability
• Fault Protection
   ♦ +60 V Peak Transient Voltage
   ♦ −40 V Reverse Voltage
   ♦ Short Circuit
   ♦ Thermal Overload
• Early Warning through SI/SO Leads
• Internally Fused Leads in SO−14 and SO−20 Packages
• Integrated Pullup Resistor at Logic Outputs (To Use External Resistors, Select the NCV4279A)
• Very Low Dropout Voltage
• Electrical Parameters Guaranteed Over Entire Temperature Range
• NCV Prefix for Automotive and Other Applications Requiring
   Unique Site and Control Change Requirements; AEC−Q100
   Qualified and PPAP Capable
• These are Pb−Free Devices