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Linear Technology Electronic Components Datasheet

LTC4151CS Datasheet

High Voltage I2C Current and Voltage Monitor

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Features
n Wide Operating Voltage Range: 7V to 80V
n 12-Bit Resolution for Both Current and Voltages
n I2C Interface
n Additional ADC Input Monitors an External Voltage
n Continuous Scan and Snapshot Modes
n Shutdown Mode (LTC4151) Reduces Quiescent
Current to 120µA
n Split SDA for Opto-Isolation (LTC4151-1/LTC4151-2)
n Available in 10-Lead MSOP, 10-Lead 3mm × 3mm
DFN and 16-Lead SO Packages
Applications
n –48V Telecom Infrastructure
n Automotive
n Industrial
n Consumer
LTC4151
High Voltage I2C Current
and Voltage Monitor
Description
The LTC®4151 is a high side power monitor that operates
over a wide voltage range of 7V to 80V. In default operation
mode, the onboard 12-bit ADC continuously measures
high side current, input voltage and an external voltage.
Data is reported through the I2C interface when polled
by a host. The LTC4151 can also perform on-demand
measurement in a snapshot mode. The LTC4151 features
a dedicated shutdown pin to reduce power consumption.
The LTC4151‑1/LTC4151-2 feature split I2C data pins to
drive opto-isolators. The data out on the LTC4151-1 is
inverted while that on the LTC4151-2 is not.
PART
PACKAGE
FEATURED PIN
LTC4151
DD10, MS10
SHDN
LTC4151-1
DD10, MS10
SDAO
LTC4151-2
S16
SDAO
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and
Hot Swap is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
Typical Application
High Side Power Sensing with Onboard ADC and I2C
VIN
7V TO 80V
0.02Ω
SENSE+ SENSE
VIN
SHDN
LTC4151
SCL
ADR1
SDA
ADR0
ADIN
GND
3.3V
VOUT
2k 2k
VDD
µCONTROLLER
MEASURED
VOLTAGE
SCL
SDA
GND
4151 TA01
For more information www.linear.com/LTC4151
12-Bit ADC DNL and INL
1.0
0.5
0
–0.5
–1.0
0
1.0
1024
2048
CODE
3072
4096
4151 TA01b
0.5
0
–0.5
–1.0
0
1024
2048
CODE
3072
4096
4151 TA01c
4151ff
1


Linear Technology Electronic Components Datasheet

LTC4151CS Datasheet

High Voltage I2C Current and Voltage Monitor

No Preview Available !

LTC4151
Absolute Maximum Ratings (Notes 1, 3)
VIN Voltage.................................................. –0.3V to 90V
SENSE+, SENSEVoltages............................VIN – 10V or
–0.3V to VIN + 0.3V
ADR1, ADR0 Voltages ............................... –0.3V to 90V
ADIN, SHDN, SDAO, SDAO Voltages............ –0.3V to 6V
SCL, SDA, SDAI Voltages (Note 2)............ –0.3V to 5.5V
SCL, SDA, SDAI Clamp Current................................ 5mA
Operating Temperature Range
LTC4151C/LTC4151C-1/LTC4151C-2.......... 0°C to 70°C
LTC4151I/LTC4151I-1/LTC4151I-2..........–40°C to 85°C
LTC4151H............................................ –40°C to 125°C
Storage Temperature Range
MSOP, SO........................................... –65°C to 150°C
DFN..................................................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)
MSOP, SO.......................................................... 300°C
Pin Configuration
LTC4151
LTC4151-1
LTC4151-2
SENSE+ 1
VIN 2
ADR1 3
ADR0 4
ADIN 5
TOP VIEW
10 SENSE
9 GND
11
8 SHDN
7 SDA
6 SCL
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
TJMAX = 150°C, θJA = 45°C/W
EXPOSED PAD (PIN 11) PCB GND CONNECTION OPTIONAL
SENSE+ 1
VIN 2
ADR1 3
ADR0 4
ADIN 5
TOP VIEW
10 SENSE
9 GND
11
8 SDAO
7 SDAI
6 SCL
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 45°C/W
EXPOSED PAD (PIN 11) PCB GND CONNECTION OPTIONAL
LTC4151
LTC4151-1
SENSE+ 1
VIN 2
ADR1 3
ADR0 4
ADIN 5
TOP VIEW
10 SENSE
9 GND
8 SHDN
7 SDA
6 SCL
MS PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 85°C/W
SENSE+ 1
VIN 2
ADR1 3
ADR0 4
ADIN 5
TOP VIEW
10 SENSE
9 GND
8 SDAO
7 SDAI
6 SCL
MS PACKAGE
10-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 85°C/W
SENSE+ 1
VIN 2
NC 3
NC 4
ADR1 5
NC 6
ADR0 7
NC 8
TOP VIEW
16 SENSE
15 NC
14 NC
13 GND
12 SDAO
11 SDAI
10 SCL
9 ADIN
S PACKAGE
16-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 100°C/W
2
For more information www.linear.com/LTC4151
4151ff


Part Number LTC4151CS
Description High Voltage I2C Current and Voltage Monitor
Maker Linear
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