Microchip | MIC2800-D24MYML-TR

The MIC2800 is a high performance power management IC, giving three output voltages with maximum efficiency. Integrating a 2MHz DC/DC converter with an LDO post regulator, the MIC2800 gives two high efficiency outputs with a second, 300 mA LDO for maximum flexibility.

The MIC2800 features a LOWQ™ mode, reducing the total current draw while in this mode to less than 30 μA. In LOWQ™ mode, the output noise of the DC to DC converter is 75 μVRMS, significantly lower than other converters which use a PFM light load mode that can interfere with sensitive RF circuitry.The DC to DC converter uses small values of L and C to reduce board space but still retains efficiencies over 90% at load currents up to 600 mA.

Features :

• 2.7 V to 5.5 V input voltage range
• 2 MHz DC/DC converter and two stand-alone LDOs
• 3LDO1: Low input voltage is powered directly from DC/DC converter for highest efficienc
• Integrated power-on reset (OR function for all outputs)
• Adjustable delay time
• LOWQ™ mode
• 30 μA Total IQ when in LOWQ™ mode
• Tiny 16-pin 3 mm x 3 mm MLF® package

DC to DC Converter :

• Output current to 600 mA in PWM mode
• LOWQ™ Mode: NO NOISE Light load mode
• 75 μVRMS output noise in LOWQ™ mode
• 2 MHz PWM operation in normal mode
• >90% efficiency

LDOs :

• LDO1 input voltage directly connected to DC/DC converter output voltage for maximum efficiency
• Ideal for 1.8 V to 1.5 V conversion
• 300 mA output current from 1.8 V input
• Output voltage down to 0.8 V
• LDO2 – 300 mA output current capable
• Thermal Shutdown Protection
• Current Limit Protection

Applications :

• Mobile phones
• PDAs
• GPS receivers
• Digital still cameras
• Portable media players