Datasheet
LTC2945
34
2945fa
For more information www.linear.com/LTC2945
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LTC4151 High Voltage I
2
C Current and Voltage Monitor 7V to 80V Operation, 12-Bit Resolution with ±1.25% TUE
LT6105 Rail-to-Rail Input Current Sense Amplifier Very Wide Input Common Mode Range, 2.85V to 36V Operation
LTC2450 Easy-to-Use, Ultra-Tiny 16-Bit ADC GND to V
CC
Single-Ended Input Range, 0.02 LSB RMS Noise, 2 LSB INL
(No Missing Codes), 2 LSB Offset Error, 4 LSB Full-Scale Error
LTC4215 Single Channel, Hot Swap Controller with I
2
C Monitoring 8-Bit ADC, Adjustable Current Limit and Inrush, 2.9V to 15V Operation
LTC4222 Dual Channel, Hot Swap Controller with I
2
C Monitoring 10-Bit ADC, Adjustable Current Limit and Inrush, 2.9V to 29V Operation
LTC4260 Positive High Voltage Hot Swap Controller with I
2
C Monitoring 8-Bit ADC, Adjustable Current Limit and Inrush, 8.5V to 80V Operation
LTC4261 Negative High Voltage Hot Swap Controller with I
2
C Monitoring 10-Bit ADC, Floating Topology, Adjustable Inrush
LTC2940 Power and Current Monitor Four-Quadrant Multiplication, ±5% Power Accuracy, 4V to 80V Operation
LTC2970 Dual I
2
C Power Supply Monitor and Margining Controller 14-Bit ADC with ±0.5% TUE, Dual 8-Bit DACs
LTC2974 Quad Digital Power Supply Manager with EEPROM 16-Bit ADC with ±0.25% TUE, Supervise/Sequence/Monitor/Margin/
Trim, Configuration/Fault Logging EEPROM, I
2
C, Supervise/Monitor
Current and Temperature
LTC2978 Octal Digital Power Supply Manager with EEPROM 16-Bit ADC with ±0.25% TUE, Supervise/Sequence/Monitor/Margin/
Trim, Configuration/Fault Logging EEPROM, I
2
C
Rail-to-Rail Bidirectional Current and Power Monitor3.3V Input Supply Monitor with 12V V
DD
Input
V
+
IN
–
IN
+
V
–
LT6105
2.7V TO 5.9V
V
OUT
V
IN
0V TO 44V
SENSE
+
SENSE
–
ALERT
SCL
SDAI
ADINADR0
ADR1
LTC2945
SDAO
INTV
CC
V
DD
R
SNS
0.02Ω
R
IN1
1k
R
IN2
1k
TO
LOAD
R
ADIN
20k
I
2
C
INTERFACE
2945 TA11
GND
FORWARD SENSE
+
∆SENSE INTERNALLY GENERATED
USE EXTERNAL µP TO
MULTIPLY VOLTAGE (SENSE
+
)
AND CURRENT (ADIN) DATA
ADINSENSE
+
1
VOLTAGE
DATA
CURRENT
DATA
POWER
DATA
CONTROL REG
A2
1REVERSE
C2
0.1µF
R1
2k
R2
2k
R3
2k
V
IN
3.3V
3.3V
12V
R
SNS
0.02Ω
V
OUT
V
DD
V
ADIN
V
DD
ADR0
INTV
CC
SENSE
+
GND GND
2945 TA12
SENSE
–
LTC2945
ADR1
SCL SCL
SDA
SDAI
SDAO
ADIN
ALERT INT
µP
LINEAR TECHNOLOGY CORPORATION 2012
LT 0913 REV A • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC2945