LTC1798CS8-4.1(RevA) 데이터 시트보기 (PDF) - Linear Technology

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LTC1798CS8-4.1
(Rev.:RevA)

Micropower Low Dropout References

Linear Technology 

LTC1798 Series

PI FU CTIO S

DNC (Pins 1, 5, 7, 8): Do Not Connect. Connected

internally for post package trim. These pins must be left

unconnected.

IN (Pin 2): Positive Supply. Bypassing with a 0.1µF

capacitor is recommended if the output loading changes.

(VOUT + 0.2V) ≤ VIN ≤ 12.6V.

DNC (Pin 3): (LTC1798-2.5/LTC1798-3/LTC1798-4.1/

LTC1798-5) Do Not Connect. Connected internally for

post package trim. This pin must be left unconnected.

FB (Pin 3): (LTC1798) Resistor Divider Feedback Pin.

Connect a resistor divider from OUT to GND and the center

tap to FB. This pin sets the output potential.

VOUT = 2.385V  R1R+2R2; R1 is connected from OUT

to FB and R2 from FB to GND. Selecting R2 ≥ 10k will

make IOUT < 250µA.

GND (Pin 4): Negative Supply or Ground Connection.

OUT (Pin 6): Reference Output. The output can source up

to 10mA and sink up to 2mA. It is stable with output bypass

capacitor ranging from 0µF to 1µF.

BLOCK DIAGRA

2

IN

+

–

2.385V

OUT 6

R1

FB 3 (LTC1798)

R2

GND

4

1798 BD

NOTE: R1 AND R2 ARE NOT CONNECTED FOR LTC1798

5

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