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LTC1258 Series

Micropower Low

Dropout References

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200mV Max Dropout at 10mA Output Current

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4

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0.15% Max Initial Accuracy (S8)

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No Output Capacitor Required

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Output Sources 10mA, Sinks 2mA

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40ppm/

°C Max Drift (S8)

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Available in Small MSOP Package

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Voltage Options: 2.5V, 3V, 4.1V, 5V and Adjustable

The LTC

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 refer-

ences 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 1

µF.Thisfeatureisimportant

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.

, LTC and LT are registered trademarks of Linear Technology Corporation.

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Battery-Powered Systems

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Handheld Instruments

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Precision Power Supplies

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A/D and D/A Converters

LTC1258-2.5 Temperature Drift

TEMPERATURE (

°C)

–40

–20

0

20

40

60

80

100

1258 TA02

4

3

2

1

–2

–1

–3

–4

0

LTC1258-2.5

OUT

IN

GND

4

2

2.7V

TO 12.6V

1

2.5V

1258 TA01

0.1

µF

DESCRIPTIO

FEATURES

APPLICATIO S

2.5V Battery-Powered Reference