LTC1798 Datasheet | Linear Technology

Features n 200m V Max Dropout at 10m A Output Current n 4µA Typical Quiescent Current n 0.15% Max Initial Accuracy n No Output Capacitor Required n Output Sources 10m A, Sinks 2m A n 40ppm/°C Max Drift n Voltage Options: 2.5V, 3V, 4.1V, 5V and Adjustable APPLICATIONS n Battery-Powered Systems n Handheld Instruments n Precision Power Supplies n A/D and D/A Converters n Available in the SO-8 Package L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. LTC1798 Series Micropower Low Dropout References DESCRIPTION The LTC®1798/LTC1798-2.5/LTC1798-3/LTC1798-4.1/ LTC1798-5 are micropower bandgap references that bine high accuracy and low drift with very low supply current and small package size. The bination of ultralow quiescent current and low dropout voltage of only 200m V (max) makes them ideal for battery-powered equipment. The output voltage is set by an external resistor divider for the adjustable LTC1798. This series of references uses curvature pensation to obtain low temperature coefficient and trimmed thin-film resistors to achieve high output accuracy. These references can source up to 10m A and sink up to 2m A, 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 LTC1798 series references provided power dissipation advantages over shunt references. In addition to supply current, shunt references must also idle the entire load current to operate. The LTC1798 series is available in the SO-8 package. TYPICAL APPLICATION 2.5V Battery-Powered Reference 2.7V TO 12.6V LTC1798-2.5 2 IN OUT 6 0.1µF GND 4 1798 TA01 2.5V REFERENCE VOLTAGE CHANGE (m V) LTC1798-2.5 Temperature Drift 4 3 2 1 0 - 1 - 2 -...