The LTC1983-3/LTC1983-5 are switching power supplies that can produce negative voltage outputs with a maximum output current of 100mA.
The LTC1983-3 and LTC1983-5 are inverting charge pump DC/DC converters that produce negative regulated outputs of -3V or -5V, respectively. These devices require only three tiny external capacitors and can provide up to 100mA of output current. They are designed for portable equipment, LCD bias supplies, and GaAs FET bias supplies, operating from a single supply voltage.
| Fixed Output Voltages | -3V or -5V |
|---|---|
| Output Current Capability | 100mA |
| Operating Voltage Range (LTC1983-3) | 3V to 5.5V |
| Operating Voltage Range (LTC1983-5) | 2.3V to 5.5V |
| Quiescent Current | 25uA typical |
| Oscillator Frequency | 900kHz |
| Operating Temperature Range | -40°C to 85°C |
| Package Type | 6-pin ThinSOT |
The LTC1983-3 provides a fixed -3V output, while the LTC1983-5 provides a fixed -5V output.
The devices can provide up to 100mA of output current.
The typical quiescent current is 25uA.