AP2760 0.85V STARTUP, 1MHZ, 300mA SYNCHRONOUS
BOOST STEP-UP DC-DC CONVERTER
General Description:
The A2760 is a step-up converter that provides a boosted output voltage from a low
voltage source. Because of its proprietary design, it starts up at a very low input
voltage down to 0.85V, making it an ideal choice for single cell Alkaline/ NiMH battery
operations.
A switching frequency of 1MHz minimizes solution footprint by allowing the use of tiny,
low profile inductors and ceramic capacitors. The internally compensated current
mode PWM design and built-in synchronous rectifier help to reduce external parts
count.
Key Specification
• Output current 300mA (typ)
• Efficiency 95% (typ)
• Output voltage accuracy ±3% (max)
• Startup Voltage 0.85V (typ)
• Quiescent Current 25uA (typ)
• Shutdown Current 0.1uA (typ)
Features:
• High Efficiency up to 95%
• 1MHz Switching Frequency Allows Small Inductor and Output Cap
• Input Boost-Strapping Allows Small or No Input Cap
• Low VIN Start-up Voltage down to 850mV Ideal for Single Alkaline Cell operations
• Low Noise PWM Control
• Internally Compensated Current Mode Control
• Internal Synchronous Rectifier
• Logic Control Shutdown (0.1uA shutdown current)
• Space-saving Package (SOT-25)
Applications:
• One to Three Cell Battery Operated Devices
• Medical Instruments
• Bluetooth Headsets
• Flash-Based MP3 Players
• Noise Canceling Headphones
