LT1962EMS8 データシートの表示（PDF） - Linear Technology
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LT1962EMS8 Datasheet PDF : 16 Pages
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LT1962 Series
TYPICAL APPLICATIO S
Adjustable Current Source
VIN
>2.7V
+ C1
10µF
LT1004-1.2
R5
0.1Ω
R1*
1k
R2
R6
40.2k
2.2k
IN
OUT
LT1962-2.5
SHDN
FB
GND
LOAD
R7
100k
R3
R4
2k
2.2k
*ADJUST R1 FOR 0mA TO 300mA
CONSTANT CURRENT
–
C3
0.33µF
1/2 LT1490
+
C2
1µF
1962 TA04
Paralleling of Regulators for Higher Output Current
VIN > 3.7V
R1
0.1Ω
+ C1
10µF
R2
0.1Ω
SHDN
IN
OUT
FB
LT1962-3.3
SHDN BYP
GND
C4
0.01µF
3.3V
+
300mA
C2
10µF
IN
OUT
LT1962
BYP
SHDN ADJ
GND
C5
0.01µF R6
2k
R7
1.21k
R3
R4
2.2k
2.2k
3+
8
R5
1 10k
1/2 LT1490
2–
4
C3
0.01µF
1962 TA03
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LT1963
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Burst Mode is a trademark of Linear Technology Corporation.
COMMENTS
Includes 2.5V Reference and Comparator
30µA IQ, SOT-223 Package
50µA Quiescent Current
45µA IQ, 0.26V Dropout Voltage, SOT-223 Package
15µA IQ, Reverse Battery Protection
500mV Dropout Voltage
Burst ModeTM Operation, Monolithic, 100% Duty Cycle
20µA Quiescent Current, 20µVRMS Noise
25µA Quiescent Current, 20µVRMS Noise
30µA Quiescent Current, 20µVRMS Noise
340mV Dropout Voltage, 40µVRMS Noise
Up to 94% Efficiency, SOT-23 Package, 100% Duty Cycle
SO-8, SOT-223 Packages
16 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408)432-1900 q FAX:(408)434-0507 q www.linear-tech.com
sn1962 1962fas LT/TP 0101 2K REV A • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 2000
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