Catalog
Switched Capacitor Inverter
| Part | Frequency - Switching | Package / Case | Operating Temperature [Max] | Operating Temperature [Min] | Voltage - Input (Max) [Max] | Synchronous Rectifier | Mounting Type | Output Configuration | Voltage - Output (Min/Fixed) | Function | Current - Output | Supplier Device Package | Output Type | Voltage - Input (Min) [Min] | Number of Outputs | Outputs and Type | Outputs and Type | Voltage - Input [Min] | Voltage - Input [Max] | Regulator Topology | Supplied Contents | Main Purpose | Utilized IC / Part | Board Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments LM2776DBVT | 2 MHz | SOT-23-6 | 85 °C | -40 °C | 5.5 V | Surface Mount | Negative | -Vin | Ratiometric | 200 mA | SOT-23-6 | 1.81 mOhm | 2.7 V | 1 | ||||||||||
Texas Instruments LM2776EVM | 2 MHz | 200 mA | Non-Isolated | 1 | 2.7 V | 5.5 V | Inverting | Board(s) | DC/DC, Negative Inverter | LM2776 | Fully Populated |
Key Features
• Input Voltage: 2.7 V to 5.5 V200-mA Output CurrentInverts Input Supply VoltageLow-Current PFM Mode Operation2-MHz Switching FrequencyGreater than 90% EfficiencyCurrent Limit and Thermal ProtectionNo InductorsInput Voltage: 2.7 V to 5.5 V200-mA Output CurrentInverts Input Supply VoltageLow-Current PFM Mode Operation2-MHz Switching FrequencyGreater than 90% EfficiencyCurrent Limit and Thermal ProtectionNo Inductors
Description
AI
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 TI’s 6-pin SOT-23 to maintain a small form factor.
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 TI’s 6-pin SOT-23 to maintain a small form factor.