The MIC5312 is a high performance, dual µCap low dropout regulator with integrated power-on reset supervisor, offering ultra-low operating current and a second, even lower operating current mode, LowQ™ mode, reducing operating current by 75%. Each regulator can source up to 300mA of output current maximum.

Ideal for battery operated applications, the MIC5312 offers 1% accuracy, extremely low dropout voltage (60mV @ 150mA), and low ground current (typically 28µA total). When put into LowQ™ mode, the internal current draw drops down to 7µA total. The MIC5312 also comes equipped with a TTL logic compatible enable pin that allows the part to be put into a zero-off-mode current state, drawing no current when disabled.

The Power-on Reset is active low and indicates an output undervoltage condition on either regulator 1 or 2 when the regulator is enabled.

The MIC5312 is a ?Cap design, operating with very small ceramic output capacitors for stability, reducing required board space and component cost.

The MIC5312 is available in fixed output voltages in the
10-pin 3mm x 3mm MLF leadless package.

• Input voltage range: 2.25V to 5.5V
• LowQ™ Mode
  • 7µA total quiescent current
  • 10mA output current capable LowQ™ mode
  • Logic level control with external pin
• Stable with ceramic output capacitor
• 2 LDO outputs - 300mA each
• Integrated Power-on Reset (POR) with adjustable delay time
• Tiny 10-pin 3mm x 3mm MLF™ package
• Low dropout voltage of 60mV @ 150mA
• Ultra-low quiescent current of 28µA total in Full Current Mode
• High output accuracy
  • +1.0% initial accuracy
  • +2.0% over temperature
• Thermal shutdown protection
• Current limit protection

• Cellular/PCS phones
• Wireless modems
• PDAs
• MP3 Players

* For other output voltage options, contact Micrel marketing.