Datasheet

LT2940
17
2940f
TYPICAL APPLICATIONS
30W Linear Heat Source
Wide Input Range 10W PWM Heat Source
PMON IMON
V
–
V
+
I
–
I
+
V
CC
2940 TA04
R2
102k
LM334
R1
25.5k
R6
51
Q1
VN2222
D1
1N457
D2
27V
10A/V
10V TO 40V
R
S
LT2940
GND
200m
3
R5
6.8k
R7
3.3k
C3
470pF
C2
22nF
R3
10k
R4
680
V
–
V
+
R
R8
1k
R9
10k
Q2
TIP129
HEATSINK
Q = 30W
Q3
D44VH11
R10
100
R11
100m
k
V
=
k
I
=
200m
3
1
15
C1
100µF
50V
+
CMP
+
IMONPMON
CMPOUT
CMPOUT
LATCH
V
–
V
+
I
–
I
+
V
CC
2940 TA05
D2
1N4148
Q2
BSS123
22.4V TO 72V
R
S
LT2940
GND
200m
3
R4
68k
C4
4.7µF
C1
100µF
100V
k
V
=
k
I
=
t
OFF
z2ms
200m
3
13
233
HEATSINK
Q = 10W
R6
10k
R5
10k
R7
50
25W
Q3
2N3906
12V
D1
MUR1100E
Q1
FDS3672
R2
220k
R1
13k
D3
1N4148
C2
100nF
+
12V