LTC1261IS8#PBF

The LTC1261IS8#PBF is a switched-capacitor voltage inverter manufactured by Analog Devices, formerly Linear Technology. This component is designed to generate a regulated negative voltage from a single positive supply, making it suitable for applications requiring negative voltage rails without the need for inductors.

Key electrical specifications include an operating input voltage range of 3V to 8V. It can provide up to 15mA of output current with low output ripple, typically 5mV. The device operates at a switching frequency of 550kHz. It features a low supply current of 600µA typical, which can be reduced to 5µA in shutdown mode.

The LTC1261IS8#PBF offers adjustable or fixed output voltage options. It can be configured for fixed outputs such as -5V, -4.5V, -4V, or -3.5V using an on-chip resistor string. For the LTC1261CS variant, the adjustable output voltage ranges from -1.25V to -8V. The LTC1261IS8#PBF is optimized for applications using 5V or higher supplies and requires minimal external components, typically just three or four capacitors.

This device is available in an 8-lead SO package (SO-8). The operating temperature range is -40°C to 85°C. Its design makes it suitable for applications such as GaAsFET bias generation and other power management tasks where a compact, efficient negative voltage source is required.