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LTC1258 - Micropower Low Dropout References

The LTC1258/LTC1258-2.5/LTC1258-3/LTC1258-4.1/ LTC1258-5 are micropower bandgap references that combine high accuracy and low drift with very low sup- ply current and small package size. The combination of ultralow quiescent current and low dropout voltage of only 200mV maximum makes them ideal for battery-powered equipment. The output voltage is set by an external resistor divider for the adjustable LTC1258. This series of references uses curvature compensation to obtain low temperature coefficient and trimmed thin-film resistors to achieve high output accuracy. These references can source up to 10mA and sink up to 2mA, making them ideal for precision regulator applications. They are stable without an output bypass capacitor, but are also stable with capacitance up to 1μF This feature is important in . critical applications where PC board space is a premium and fast settling is demanded. The LTC1258 series references provide power dissipation advantages over shunt references. In addition to supply current, shunt references must also idle the entire load current to operate. The LTC1258 series is available in the 8-pin MSOP and SO packages.

Features 200mV Max Dropout at 10mA Output Current 4µA Typical Quiescent Current 0.15% Max Initial Accuracy (S8) No Output Capacitor Required Output Sources 10mA, Sinks 2mA 40ppm/°C Max Drift (S8) Voltage Options: 2.5V, 3V, 4.1V, 5V and Adjustable Available in Small MSOP Package Typical Application

Applications Battery-Powered Systems Handheld Instruments Precision Power Supply A/D and D/A Converters Packaging