LT6660
12
6660fa
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2006
LT 0406 REV A PRINTED IN USA
V
+
≥ (V
OUT
+ 1.8V)
LT6660
OUT
GND
IN
6660 TA03
2N2905
V
OUT
100mA
47µF
2µF
SOLID
TANT
R1
220Ω
+
+
3
2
1
6660 TA04
2N2905
V
OUT
100mA
2µF
SOLID
TANT
D1*
LED
V
+
≥ V
OUT
+ 2.8V
8.2Ω
R1
220Ω
GLOWS IN CURRENT LIMIT,
DO NOT OMIT
*
47µF
+
+
LT6660
OUT
GND
IN
3
2
1
6660 TA02
R
L
40mA
V
+
R1*
V
OUT
TYPICAL LOAD
CURRENT = 50mA
SELECT R1 TO DELIVER 80% OF TYPICAL LOAD CURRENT.
LT6660 WILL THEN SOURCE AS NECESSARY TO MAINTAIN
PROPER OUTPUT. DO NOT REMOVE LOAD AS OUTPUT WILL
BE DRIVEN UNREGULATED HIGH. LINE REGULATION IS
DEGRADED IN THIS APPLICATION
*
10mA
47µF
+
LT6660
OUT
GND
IN
R1 =
V
+
– V
OUT
40mA
3
2
1
Handling Higher Load Currents
Boosted Output Current with No Current Limit Boosted Output Current with Current Limit
PART NUMBER DESCRIPTION COMMENTS
LT1019 Precision Bandgap Reference 0.05% Max, 5ppm/°C Max
LT1027 Precision 5V Reference 0.02%, 2ppm/°C Max
LT1236 Precision Low Noise Reference 0.05% Max, 5ppm/°C Max, SO Package
LT1460 Micropower Series References 0.075% Max, 10ppm/°C Max, 20mA Output Current
LT1461 Micropower Precision Low Dropout 0.04% Max, 3ppm/°C Max, 50mA Output Current
LT1634 Micropower Precision Shunt Reference 1.25V, 2.5V Output 0.05%, 25ppm/°C Max
LT1790 Micropower Precision Series References 0.05% Max, 10ppm/°C Max, 60µA Supply, SOT23 Package
LTC
®
1798 Micropower Low Dropout Reference, Fixed or Adjustable 0.15% Max, 40ppm/°C, 6.5µA Max Supply Current