LM2776

Product Folder Order Now Technical Documents Tools & Software Support & Community Reference Design LM2776 SNVSA56B – MAY 2015 – REVISED FEBRUARY 2017 LM2776 Switched Capacitor Inverter 1 Features 1 Input Voltage: 2.7 V to 5.5 V 200-mA Output Current Inverts Input Supply Voltage Low-Current PFM Mode Operation 2-MHz Switching Frequency Greater than 90% Efficiency Current Limit and Thermal Protection No Inductors 2 Applications Operational Amplifier Power Supplies Interface Power Supplies Data Converter Supplies Audio Amplifier Power Supplies Portable Electronic Devices 2.7 V to 5.5 V 2.2 PF Typical Application LM2776 VIN VOUT -VIN @ up to 200mA EN C1+ 2.2 PF GND C1- 1 PF 3 Description The LM2776 CMOS charge-pump voltage converter inverts a positive voltage in the range from 2.7 V to 5.5 V to the corresponding negative voltage. The LM2776 uses three low-cost capacitors to provide 200 mA of output current without the cost, size, and electromagnetic interference (EMI) related to inductor-based converters. With an operating current of only 100 μA and operating efficiency greater than 90% at most loads, the LM2776 provides ideal performance for batterypowered systems requiring a high power negative power supply. The LM2776 has been placed in TI's 6-pin SOT-23 to maintain a small form factor. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM2776 SOT-23 (6) 2.90 mm × 1.60 mm (1) For all available packages, see the orderable a...