Microchip | MIC5247-1.8YM5-TR

The MIC5247-1.8YM5 TR is an efficient and precise, low-voltage CMOS voltage regulator optimized for ultra-low noise applications. The MIC5247 offers better than 1% initial accuracy and 85 mA constant ground current over load (typically 85 mA).

The MIC5247 provides a very low-noise output, ideal for RF applications where quiet voltage sources are required. A noise bypass pin is also available for further reduction of output noise. Designed specifically for handheld and battery-powered devices, the MIC5247 provides a logic compatible enable pin. When disabled, power consumption drops nearly to zero.

The MIC5247 also works with low-ESR ceramic capacitors, reducing the amount of board space necessary for power applications, critical in handheld wireless devices. Available in the 2 mm x 2 mm MLF6 leadless package and the IttyBitty® SOT235 package, the MIC5247 also offers a range of fixed output voltages.

Features:

• Ultra-low noise
• Low-voltage outputs
• Load independent, ultra-low ground current: 85 mA
• 150 mA output current
• Current limiting
• Thermal shutdown
• Tight load and line regulation
• "Zero" off-mode current
• Stability with low-ESR capacitors
• Fast transient response
• Logic-controlled enable input 

Applications:

• Cellular phones and pagers
• Cellular accessories
• Battery-powered equipment
• Laptop, notebook, and palmtop computers
• PCMCIA VCC and VPP regulation/switching
• Consumer/personal electronics
• SMPS post-regulator/DC-to-DC modules
• High-efficiency linear power supplies