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LTC2970CUFD Datasheet(PDF) 9 Page - Linear Technology

Part # LTC2970CUFD
Description  Dual I2C Power Supply Monitor and
PDF  36 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC2970CUFD Datasheet(HTML) 9 Page - Linear Technology

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LTC2970/LTC2970-1
9
29701fc
CURRENT (mA)
0
–500
–400
–300
–3
–5
29701 G19
–600
–700
–800
–1
–2
–4
–200
–100
0
–45
°C
25
°C90°C
V12VIN = 12V
V12VIN (V)
8
–500
–400
–200
–100
0
12
400
29701 G20
–300
10
9
13
14
10
15
100
200
300
25
°C
90
°C
NO LOAD ON VDD
–45
°C
TEMPERATURE (
°C)
–50
–40
–35
–30
–25
–25
0
25
50
29701 G21
75
100
V12VIN = 12V
VDD = 0V
VDD Regulator Load Regulation
VDD Regulator Line Regulation
VDD Regulator Short-Circuit
Current vs Temperature
TYPICAL PERFOR A CE CHARACTERISTICS
PI FU CTIO S
VIN0_AP (Pin 1): Positive CH0_A ADC Multiplexer Input.
The output of the differential, 7:1 multiplexer connects to
the input of the ADC. CH0_A can be configured to servo
IDAC0.
VIN0_AM (Pin 2): Negative CH0_A ADC Multiplexer Input.
The output of the differential, 7:1 multiplexer connects to
the input of the ADC. CH0_A can be configured to servo
IDAC0.
VIN0_BP(Pin3):PositiveCH0_B ADCMultiplexerInput.The
output of the differential, 7:1 multiplexer connects to the
input of the ADC. CH0_B is a voltage monitor input only.
VIN0_BM (Pin 4): Negative CH0_B ADC Multiplexer Input.
The output of the differential, 7:1 multiplexer connects to the
input of the ADC. CH0_B is a voltage monitor input only.
VIN1_AP (Pin 5): Positive CH1_A ADC Multiplexer Input.
The output of the differential, 7:1 multiplexer connects to
the input of the ADC. CH1_A can be configured to servo
IDAC1.
VIN1_AM (Pin 6): Negative CH1_A ADC Multiplexer Input.
The output of the differential, 7:1 multiplexer connects to
the input of the ADC. CH1_A can be configured to servo
IDAC1.
VIN1_BP(Pin7):PositiveCH1_B ADCMultiplexerInput.The
output of the differential, 7:1 multiplexer connects to the
input of the ADC. CH1_B is a voltage monitor input only.
VIN1_BM (Pin 8): Negative CH1_B ADC Multiplexer Input.
The output of the differential, 7:1 multiplexer connects to the
input of the ADC. CH1_B is a voltage monitor input only.
VDD (Pin 9): VDD Power Supply, Voltage Monitor Input,
and Internal 5V Regulator Output. The supply input range
is 4.5V to 5.75V. The VDD pin voltage can be connected
to the ADC through an internal mux. Bypass the VDD pin
to device ground with a 100nF capacitor (CVDD). If no 5V
input voltage supply is available, float the VDD pin and
power the LTC2970 from the 12VIN pin.
12VIN (Pin 10): 12V Power Supply and Voltage Monitor
Input. An internal regulator generates 5V from 12VIN. The
input range for 12VIN is 8V to 15V. Bypass this pin with a
100nF capacitor. The regulator’s output is connected to the
VDD pin. The 12VIN pin voltage can also be monitored by
the ADC through a 3:1 attenuator and the internal mux. If
no 12V supply input is available, tie the 12VIN to the VDD
pin and operate from 4.5V to 5.75V.
VOUT0 (Pin 11): CH0 Voltage Output. Buffered version of
IDAC0 output voltage.



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