Datasheet

LT1970
19
1970fc
APPLICATIONS INFORMATION
Figure 10. Sensing Output Current
VC
SRC
COMMON
V
EE
VC
SNK
V
–
FILTER
V
+
12V
EN
V
CC
ISNK
ISRC
SENSE
–
SENSE
+
TSD
OUT
+IN
V
CC
0V TO 1V
LT1970
–12V
–IN
R
S
0.2Ω
R
LOAD
1970 F10
R
G
R
F
V
S
–
V
EE
20k
BIAS
–12V
–12V
R1
60.4k
R4
255k
V
OUT
2.5V
±5mV/mA
1kHz FULL CURRENT
BANDWIDTH
R2
10k
R3
20k
V
S
+
LT1787
–
+
LT1880
12V
–12V
0V TO 5V
A/D
OPTIONAL DIGITAL FEEDBACK
Figure 11. Simple Bench Power Supply
VC
SRC
CURRENT LIMIT
ADJUST
COMMON
V
EE
VC
SNK
V
–
FILTER
V
+
EN
V
CC
ISNK
ISRC
SENSE
–
SENSE
+
TSD
OUT
C2
10µF
C1 10µF
R
G
2.55k
LT1634-5
+IN
LT1970
–5V
–IN
R
S
1
R5
5.49k
30V DC
LOAD
FAULT
V
OUT
0V TO 25V
4mA TO 100mA
C3
10µF
GND
1970 F11
+
+
+
LTC1046
R
F
10.2k
R3
10k
R4 10k
OUTPUT
VOLTAGE
ADJUST
R1
2.1k
R2
40k