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 battery-powered systems requiring a high power negative power supply.
●The LM2776 has been placed in TIs 6-pin SOT-23 to maintain a small form factor.
● 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
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