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DEMO MANUAL DC1978A
DESCRIPTION
• Four OV/UV V
and One V
OUT
• Four Overcurrent/Undercurrent Supervisors
• Supports Multichannel Fault Management
PERFORMANCE SUMMARY
PARAMETER
V
Supply Input Voltage Range
PWR
V
Supply Input Voltage Range
DD33
ADC Total Unadjusted Error
ADC Voltage Sensing Input Range
ADC Voltage Sensing Resolution
ADC Current Sense Input Range
ADC Current Sense Resolution
Trim DAC Resolution
Trim DAC Full Scale Output Voltage
Temperature Sensor Resolution
Voltage Supervisor Input Voltage Range
Voltage Supervisor Sensing Resolution
Voltage Supervisor Total Unadjusted
Error
Current Supervisor Input Range
Current Supervisor Resolution
Current Supervisor Total Unadjusted
Error
2
I
C Serial Clock Frequency
DC1978A DEMO SYSTEM SPECIFICATIONS
DC1978A Power Supply Specifications
POWER SUPPLY CHANNEL
Controller
Nominal Untrimmed Output Voltage
Rated Output Current
Output Trim Range (V
= 1.38V)
DAC_FS
2
Supervisor
IN
Specifi cations valid over full operating temperature range.
CONDITIONS
V
≥ 1V
IN_ADC
Differential Voltage: V
= (V
IN_ADC
SENSEP[n]
V
SENSEM[n]
I
, I
SENSEP[n]
SENSEM[n]
Differential Voltage: V
= (I
IN_ADC
SENSEP[n]
RSENSE(IOUT_CAL_GAIN) = 1Ω
0mV ≤ |V
| < 16mV
IN_ADC
16mV ≤ |V
| < 32mV
IN_ADC
32mV ≤ |V
| < 63.9mV
IN_ADC
63.9mV ≤ |V
| < 127.9mV
IN_ADC
127.9mV ≤ |V
|
IN_ADC
Buffer Gain Setting 0 (MFR_CONFIG(dac_gain) = 0)
Buffer Gain Setting 1 (MFR_CONFIG(dac_gain) = 1)
Low Resolution, V
= (V
IN_VS
SENSEP[n]
High Resolution, V
= (V
IN_VS
SENSEP[n]
V
SENSEM[n]
0V to 3.8V Range
0V to 6V Range
2V < V
< 6V, Low Resolution Mode
IN_VS
1.5V < V
< 3.8V, High Resolution Mode
IN_VS
0.8V < V
< 1.5V, High Resolution Mode
IN_VS
I
, I
SENSEP[n]
SENSEM[n]
Differential Voltage: V
= (I
IN_CS
SENSEP[n]
IOUT_xC_FAULT_LIMIT × IOUT_CAL_GAIN
50mV ≤ V
≤ 170mV
IN_CS
V
< 50mV
IN_CS
CH0
LTC3860, V
OUT1
1.8V ± 2.1 %
2A
13/–19 %
• Operates Autonomously without Additional Software
• Powered from 3.3V or 4.5V to 15V
• Available in 64-Lead 9mm × 9mm QFN
– V
)
SENSEM[n]
– I
)
SENSEM[n]
– V
)
SENSEM[n]
– V
)
SENSEM[n]
– I
))
SENSEM[n]
CH1
LTC3860, V
LTM4620, V
OUT2
1.5V ± 2.1 %
1.2V ± 2.1 %
2A
11 /–15%
16/–21 %
MIN
TYP
MAX
4.5
15
3.13
3.47
±0.25
0
6
–0.1
0.1
122
μV/LSB
–0.1
6
–170
170
15.265
μA/LSB
31.25
μA/LSB
62.5
μA/LSB
125
μA/LSB
250
μA/LSB
10 Bits
1.38
2.65
0.136
°C/LSB
0
6
0
3.8
–0.1
0.1
4
mV/LSB
8
mV/LSB
±1.25
±1.0
±1.5
–0.1
6
–170
170
400
μV/LSB
±3
±1.5
10
400
CH2
CH3
LTM4620, V
OUT1
OUT2
1.0V ± 2.1 %
5A
5A
16/–21 %
dc1978af
UNITS
V
V
%
V
V
V
mV
V
V
V
V
V
%
%
%
V
mV
%
mV
kHz
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