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LTC1258

Linear Technology
Part Number LTC1258
Manufacturer Linear Technology
Description Micropower Low Dropout References
Published Mar 22, 2005
Detailed Description LTC1258 Series Micropower Low Dropout References FEATURES s s s s s s s s DESCRIPTIO 200mV Max Dropout at 10mA Output ...
Datasheet PDF File LTC1258 PDF File

LTC1258
LTC1258


Overview
LTC1258 Series Micropower Low Dropout References FEATURES s s s s s s s s DESCRIPTIO 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) Available in Small MSOP Package Voltage Options: 2.
5V, 3V, 4.
1V, 5V and Adjustable The LTC®1258/LTC1258-2.
5/LTC1258-3/LTC1258-4.
1/ LTC1258-5 are micropower bandgap references that combine high accuracy and low drift with very low supply current and small package size.
The combination of ultralow quiescent current and low dropout voltage of only 200mV max.
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.
U APPLICATIO S s s s s Battery-Powered Systems Handheld Instruments Precision Power Supplies A/D and D/A Converters , LTC and LT are registered trademarks of Linear Technology Corporation.
The LTC1258 series is available in the 8-pin MSOP and SO packages.
TYPICAL APPLICATION LTC1258-2.
5 Temperature Drift 2.
5V Battery-Powered Reference REFERENCE VOLTAGE CHANGE (mV) 4 3 2 1 0 –1 –2 –3 –4 –40 –20 0 20 40 60 TEMPERATURE (°C) 80 100 LTC1258-2.
5 2.
7V TO 12.
6V 2 0.
1µF GND 1258 TA01 IN OUT 1 2.
5V 4 U 1258 TA02 U 1 LTC1258 Series ABSOLUTE MAXI...



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