LT1962 Series
Typical applicaTion
Adjustable Current Source
Paralleling of Regulators for Higher Output Current
R1
0.1Ω
R5
0.1Ω
3.3V
IN
OUT
FB
IN
OUT
LT1962-2.5
SHDN FB
GND
300mA
+
+
+
V
C1
10µF
C1
10µF
IN
>2.7V
C2
10µF
R1*
1k
LOAD
V
IN
> 3.7V
C4
0.01µF
LT1962-3.3
SHDN
BYP
R2
40.2k
R6
2.2k
R7
100k
LT1004-1.2
GND
R2
0.1Ω
R3
2k
R4
2.2k
IN
OUT
C5
0.01µF
C3
0.33µF
–
LT1962
R6
2k
BYP
ADJ
*ADJUST R1 FOR 0mA TO 300mA
CONSTANT CURRENT
1/2 LT1490
1962 TA04
+
SHDN
SHDN
GND
R7
C2
1µF
1.21k
R3
2.2k
R4
2.2k
8
3
2
R5
10k
+
1
1/2 LT1490
–
4
1962 TA03
C3
0.01µF
relaTeD parTs
PART NUMBER
LT1120
DESCRIPTION
125mA Low Dropout Regulator with 20µA I
COMMENTS
Includes 2.5ꢀ Reference and Comparator
Q
LT1121
150mA Micropower Low Dropout Regulator
700mA Micropower Low Dropout Regulator
30µA I , SOT-223 Package
Q
LT1129
50µA Quiescent Current
LT1175
500mA Negative Low Dropout Micropower Regulator
300mA Low Dropout Micropower Regulator with Shutdown
3A Low Dropout Regulator with 50µA I
45µA I , 0.26ꢀ Dropout ꢀoltage, SOT-223 Package
Q
LT1521
15µA I , Reverse Battery Protection
Q
LT1529
500mꢀ Dropout ꢀoltage
Q
LTC®1627
High Efficiency Synchronous Step-Down Switching Regulator
100mA, Low Noise, Low Dropout Micropower Regulator in SOT-23
150mA, Low Noise, LDO Micropower Regulator
Burst Mode™ Operation, Monolithic, 100% Duty Cycle
LT1761
20µA Quiescent Current, 20µꢀ
25µA Quiescent Current, 20µꢀ
30µA Quiescent Current, 20µꢀ
Noise
Noise
Noise
Noise
RMS
RMS
RMS
LT1762
LT1763
500mA, Low Noise, LDO Micropower Regulator
LT1764
3A, Fast Transient Response Low Dropout Regulator
Constant Frequency Current Mode Step-Down DC/DC Controller
1.5A, Fast Transient Response Low Dropout Regulator
340mꢀ Dropout ꢀoltage, 40µꢀ
RMS
LTC1772
LT1963
Up to 94% Efficiency, SOT-23 Package, 100% Duty Cycle
SO-8, SOT-223 Packages
1962fba
LT 0515 REV B • PRINTED IN USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
18
For more information www.linear.com/LT1962
(408)432-1900 FAX: (408) 434-0507 www.linear.com/LT1962
●
●
LINEAR TECHNOLOGY CORPORATION 2000
Linear [ Linear ]
