General Description

The MIC5233 is a 100mA highly accurate, low dropout regulator with high input voltage and ultra-low ground current. This combination of high voltage and low ground current makes the MIC5233 ideal for multi-cell Li-Ion battery systems.

A µCap LDO design, the MIC5233 is stable with either ceramic or tantalum output capacitor. It only requires a 2.2µF capacitor for stability.

Features of the MIC5233 include enable input, thermal shutdown, current-limit, reverse-battery protection, and reverse-leakage protection.

Available in fixed and adjustable output voltage versions, the MIC5233 is offered in the IttyBitty® SOT-23-5 and SOT223-3 package with a junction temperature range of −40°C to +125°C.

Features

• Wide input voltage range: 2.3V to 36V

• Ultra-low ground current: 18µA

• Low dropout voltage of 270mV at 100mA

• High output accuracy of ±2.0 over temperature

• µCap: stable with ceramic or tantalum capacitors

• Excellent line and load regulation specifications

• Zero shutdown current

• Reverse-battery protection

• Reverse-leakage protection

• Thermal-shutdown and current-limit protection

• IttyBitty® SOT-23-5 and SOT-223-3 packages

Applications

• Keep-alive supply in notebook and portable computers

• USB power supply

• Logic supply for high-voltage batteries

• Automotive electronics

• Battery-powered systems

• 3 − 4 cell Li-Ion battery input range