LT1019 Datasheet, PDF (9/12 Pages) Linear Technology – Precision Reference

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TYPICAL APPLICATIO S
Trimming LT1019-5 Output to 5.120V
OUT
V_IN
IN
LT1019-5
TRIM
GND
V_OUT
41.2k
1%
5k*
±1% TRIM
4.02k
1%
*LOW TC CERMET
1019 TA04
Precision 1µA Current Source
15V
11.5k
1%
OUT IN
LT1019-2.5
5k*
TRIM
8.25k
GND
1%
2.49M
1%
–
LT1012
+
V_OUT
±11V COMPLIANCE
I_OUT = 1µA
Z_OUT ≥ 1011Ω
*LOW TC CERMET, TRIM RANGE = ±1.5%
1019 TA07
LT1019
Trimming LT1019-10 Output to 10.240V
OUT
V_IN
IN
LT1019-10
TRIM
GND
V_OUT
90.9k
1%
5k*
±1% TRIM
4.02k
1%
*LOW TC CERMET
1019 TA06
Negative Series Reference
V⁺
R1* ^LT1019
IN OUT
D1* _GND
R2*
– V_IN
Q1
2N2905
–V_REF AT 50mA
*R1 =
V⁺ – 5V _{, R2 =}
2mA
V
– _{– VREF}
1mA
,
D1
=
V_REF
+
5V
1019 TA10
Output Current Boost with Current Limit
V⁺ ≥ (V_OUT + 2.8V)
LED
GLOWS IN
CURRENT LIMIT
(DO NOT OMIT)
R1
220Ω
IN
LT1019
OUT
GND
8.2Ω
2N2905
I_LOAD ≤ 100mA
2µF SOLID TANTALUM
1019 TA08
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