lt2940 Linear Technology Corporation, lt2940 Datasheet - Page 24

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

LT2940
TYPICAL APPLICATION
RELATED PARTS
PART NUMBER
LTC1966
LTC1968
LTC6101/
LTC6101HV
LTC6104
LTC6106
LTC4151
LTC4215
LT4256-1/
LT4256-2
LTC4260
LTC4261
24
6V TO 80V
C16
1μF
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
k
k
IN
SHDN
V
I
= 100mΩ
=
LT3014
GND
20
1
DESCRIPTION
Precision Micropower Delta-Sigma RMS-to-DC
Converter
Precision Wide Bandwidth RMS-to-DC Converter
High Voltage, High Side, Precision Current Sense
Amplifi ers
Bidirectional High Side, Precision Current Sense
Amplifi er
Low Cost, High Side Precision Current Sense
Amplifi er
High Voltage I
Positive Hot Swap Controller with ADC and I
Positive 48V Hot Swap Controllers with Open-
Circuit Detect
Positive High Voltage Hot Swap Controller With
ADC and I
Negative Voltage Hot Swap Controller With ADC
and I
OUT
ADJ
2
C Monitoring
●
FAX: [phone]
2
C Monitoring
R17
309k
R16
100k
C19
0.1μF
C20
0.1μF
2
C Current and Voltage Monitor
R15
24.9k
R14
20.0k
R13
4.99k
C17
0.47μF
●
C
2.2μF
www.linear.com
LTC6702
T
–
+
–
+
GND
V
+
5V
Integrating Watt-Hour Meter
2N7002
2
C
CMP
LATCH
Q1
PMON
V
+
CC
COMMENTS
2.7V to 12V Supply Voltage, 170μA Supply Current
4.5V to 6V Supply Voltage, 500kHz 3dB-Error BW
4V to 60V/ 5V to 100V, Gain Confi gurable, SOT-23
4V to 60V, Gain Confi gurable, 8-Pin MSOP
2.7V to 36V, Gain Confi gurable, SOT23
Wide Operating Range: 7V to 80V
8-Bit ADC Monitoring Current and Voltages, Supplies from 2.9V to 15V
Foldback Current Limiting, Open-Circuit and Overcurrent Fault Output,
Up to 80V Supply
Wide Operating Range: 8.5V to 80V
Floating Topology Allows Very High Voltage Operation
GND
LT2940
I
+
100mΩ
R
S
CMPOUT
CMPOUT
IMON
I
–
V
V
+
–
RESET
S1B
S2B
S3B
S4B
S1A
S2A
S3A
S4A
C
OSC
LTC6943
R18
49.9k
V
5V
+
V
–
SHA
CB
CB
CA
CA
RESET
© LINEAR TECHNOLOGY CORPORATION 2009
+
–
+
–
V
V
5V
DD
SS
0A TO 2A
Q
CD4040
12V
0.1μF
C18
1024 COUNTS
= 1 WATT-HOUR
C1
1μF
LT 1109 • PRINTED IN USA
R2
215k
R1
11.3k
2940 TA14
LOAD
(80W MAX)
2940f