ANALOG DEVICES LTC1261LIS8-4.5#PBF DC/DC Charge Pump Voltage Converter, Fixed, 4.5 to 5.25V in, -4.5V/0.02A out, NSOIC-8

LTC®1261L is a switched-capacitor regulated voltage inverter designed to provide a regulated negative voltage from a single positive supply. Three external capacitors are required, a 0.1µF flying capacitor and an input and output bypass capacitors. An optional compensation capacitor at ADJ (COMP) can be used to reduce the output voltage ripple. Each version of the LTC1261L will supply up to 20mA output current with guaranteed output regulation of ±4.5%. This LTC1261L includes an open-drain REG output that pulls low when the output is within 5% of the set value. Applications are GaAs FET bias generators, negative supply generators, battery-powered systems, single supply applications.

• Regulated negative voltage from a single positive supply
• REG pin indicates output is in regulation
• Fixed output voltage of -4.5V
• Supply voltage of 5.25V
• Requires only three or four external capacitors
• Internal oscillator frequency of 650KHz (VCC = 5V, VOUT = -4V)
• Quiescent current is typically 650µA
• Shutdown mode drops supply current to 5µA
• 8-lead plastic SO narrow package
• -40°C to 85°C temperature range

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party