参数资料
型号: LTC2991IMS#PBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 电源管理
英文描述: 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16
封装: LEAD FREE, PLASTIC, MSOP-16
文件页数: 1/32页
文件大小: 230K
代理商: LTC2991IMS#PBF
LTC2991
1
2991f
TYPICAL APPLICATION
FEATURES
DESCRIPTION
Octal I2C Voltage, Current,
and Temperature Monitor
The LTC2991 is used to monitor system temperatures,
voltages and currents. Through the I2C serial interface, the
eight monitors can individually measure supply voltages
and can be paired for differential measurements of cur-
rent sense resistors or temperature sensing transistors.
Additional measurements include internal temperature
and internal VCC. The internal 10ppm reference minimizes
the number of supporting components and area required.
Selectable address and configurable functionality give the
LTC2991 flexibility to be incorporated in various systems
needing temperature, voltage or current data. The LTC2991
fits well in systems needing submillivolt voltage resolution,
1% current measurement and 1°C temperature accuracy
or any combination of the three.
Temperature Total Unadjusted Error
APPLICATIONS
n Measures Voltage, Current, Temperature
n Measures Four Remote Diode Temperatures
n 0.7°C (Typ) Accuracy, 0.06°C Resolution
n 1°C (Typ) Internal Temperature Sensor
n Series Resistance Cancellation
n 14-Bit ADC Measures Voltage/Current
n PWM Temperature Output
n 3V to 5.5V Supply Operating Voltage
n Eight Selectable Addresses
n Internal 10ppm/°C Voltage Reference
n V1 to V8 Inputs ESD Rated to 6kV HBM
n 16-Lead MSOP Package
n Temperature Measurement
n Supply Voltage Monitoring
n Current Measurement
n Remote Data Acquisition
n Environmental Monitoring
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Easy Drive
is a trademark of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
VCC
2-WIRE
I2C INTERFACE
V1
LTC2991
TAMBIENT
RSENSE
3.3V
5V
1.2V
2.5V
GND
SDA
SCL
ADR0
ADR1
ADR2
3.3V I/O
2.5V I/O
1.2V CORE
FPGA
TEMPERATURE
BOARD
TEMPERATURE
V3
V4
V5
V6
V7
V8
PWM
TO FAN
V2
2991 TA01a
TAMBIENT (°C)
–50
T
ERROR
(°C)
0.25
0.50
0.75
25
50
75
100 125
2991 TA01b
0
–0.50
–0.25
–25
0
150
–0.75
–1.00
1.00
TREMOTE
TINTERNAL
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