LTC1258 Series

1

1258sfb

TYPICAL APPLICATION

FEATURES

APPLICATIONS

DESCRIPTION

Micropower Low

Dropout References

The LTC

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.

2.5V Battery-Powered Reference

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

All other trademarks are the property of their respective owners.

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

0.1μF