Microchip | MIC5238-1.1YM5-TR

The MIC5238-1.1YM5 TR is an ultra-low voltage output, 150 mA LDO regulator. Designed to operate in a single supply or dual supply mode, the MIC5238 consumes only 23 µA of bias current, improving efficiency. When operating in the dual supply mode, the efficiency greatly improves as the higher voltage supply is only required to supply the 23 µA bias current while the output and base drive comes off of the much lower input supply voltage.

As a µCap regulator, the MIC5238 operates with a 2.2 µF ceramic capacitor on the output, offering a smaller overall solution. It also incorporates a logic-level enable pin that allows the MIC5238 to be put into a zero off-current mode when disabled. The MIC5238 is fully protected with current limit and thermal shutdown. It is offered in the IttyBitty™ SOT-23-5 package with an operating junction temperature range of –40°C to +125°C.

Features:

• Ultra-low input voltage range: 1.5 V to 6 V
• Ultra-low output voltage: 1.1 V minimum output voltage
• Low dropout voltage: 310 mV at 150 mA
• High output accuracy: ±2.0% over temperature
• µCap: stable with ceramic or tantalum capacitors
• Excellent line and load regulation specifications
• Zero shutdown current
• Reverse leakage protection
• Thermal shutdown and current limit protection
• IttyBitty™ SOT-23-5 package

Applications:

• PDAs and pocket PCs
• Cellular phones
• Battery powered systems               
• Low power microprocessor power supplies