lt2940 Linear Technology Corporation, lt2940 Datasheet - Page 19

• Manufacturer Part Number: lt2940
• Description: Power And Current Monitor
• Manufacturer: Linear Technology Corporation

TYPICAL APPLICATIONS
12V
k
k
V
I
R12
1k
5%
= 200mΩ
=
D1
5.1V
12.4k
4.99k
R4
R5
121
151
±2.5W MAX
= 0.8
12V
±1A MAX
1W/V
1A/V
C1
100nF
2940 TA09
R3
10k
6.5A/V
V
2940 TA08
IMON
PMON
IMON
V
CC
RESET
LT2940
GND
I
1-Cell Monitor with Bottom-Side Sense
+
R
215Ω
S1
C5
33nF
Motor Monitor with Circuit Breaker
V
LATCH
CMPOUT
CMPOUT
CMP
IMON
CC
V
V
I
–
+
–
+
R
215Ω
R5
12.4k
S2
I
LT2940
+
GND
25mΩ
R
2
S
200mV
R1
121k
PMON
I
–
R4
4.99k
V
V
+
–
*www.hawkerpowersource.com
[phone]
R6
1k
1%
+
–
REF
30k
1%
R2
LT1635
R2A
10k
1%
R1
10k
1%
R2B
10k
1%
C4
100nF
R7
200Ω
1%
V
100W/ V
PMON
Q1
2N3904
Q1
FDB3632
GE
5BPA34KAA10B
12V, 8A
PM FIELD
+
R8
1k
1%
+
–
12V
OA
C10
100μF
25V
k
k
OVERCURRENT TRIP = 8A
V
I
=
=
25mΩ
1
3
Q2
2N3904
R9
200Ω
1%
2
MUR120
R
200mΩ
CYCLON
2V, 4.5AH
DT CELL*
S3
LOAD
CHARGER
LOAD
CHARGER
+
–
LT2940
+
–
19
2940f