LM2775 - Texas Instruments

LM2775 Switched Capacitor 5-V Boost Converter

The LM2775 is a regulated switched-capacitor doubler that produces a low-noise output voltage. The LM2775 can supply up to 200 mA of output current over a 3.1-V to 5.5-V input range, as well as up to 125 mA of output current when the input voltage is as low as 2.7 V. At low output currents, the LM2775 can reduce its quiescent current by operating in a pulse .

Features

•1 2.7-V to 5.5-V Input Range
• Fixed 5-V Output
• 200-mA Output Current
• Inductorless Solution: Only Requires 3 Small Ceramic Capacitors
• Shutdown Disconnects Load from VIN
• Current Limit and Thermal Protection
• 2-MHz Switching Frequency
• PFM Operation During Light Load Currents (PFM pin tied high) 2 Applications
• USB OTG
• HDMI Power
• Portable Electronics 2.7 V to 5.5 V Typical Application Circuit 2.2 2F LM2775 VIN VOUT EN C1+ PFM C1- 5 V @ up to 200 mA 1 2F 2.2 2F OUTDIS GND 3 Description The LM2775 is a regulated switched-capacitor doubler that produces a low-noise outpu.