LTC2978
ELECTRICAL CHARACTERISTICS
SYMBOL
V
PWR
I
PWR
I
VDD33
V
UVLO_VDD33
PARAMETER
V
PWR
Supply Input Operating Range
V
PWR
Supply Current
V
DD33
Supply Current
V
DD33
Undervoltage Lockout
V
DD33
Undervoltage Lockout
Hysteresis
V
DD33
Supply Input Operating Range
Regulator Output Voltage
V
DD25
Regulator Output Voltage
V
PWR
= V
DD33
4.5V ≤ V
PWR
≤ 15V
3.13V ≤ V
DD33
≤ 3.47V
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
= 25°C. V
PWR
= V
IN_SNS
= 12V, V
DD33
, V
DD25
and REF pins floating, unless
otherwise indicated. C
VDD33
= 100nF C
VDD25
= 100nF and C
REF
= 100nF
,
.
CONDITIONS
l
MIN
4.5
TYP
MAX
15
UNITS
V
mA
mA
V
mV
Power-Supply Characteristics
4.5V ≤ V
PWR
≤ 15V, V
DD33
Floating
3.13V ≤ V
DD33
≤ 3.47V, V
PWR
= V
DD33
V
DD33
Ramping Up, V
PWR
= V
DD33
l
l
l
10
10
2.35
2.55
120
3.13
3.13
75
2.35
30
3.26
90
2.5
55
1.232
3
13
13
2.8
3.47
3.47
140
2.6
80
V
V
mA
V
mA
V
ppm/°C
ppm
Regulator Output Short-Circuit Current V
PWR
= 4.5V, V
DD33
= 0V
Regulator Output Short-Circuit Current V
PWR
= V
DD33
= 3.47V, V
DD25
= 0V
Voltage Reference Characteristics
V
REF
Output Voltage
Temperature Coefficient
Hysteresis
ADC Characteristics
V
IN_ADC
Voltage Sense Input Range
Differential Voltage:
V
IN_ADC
= (V
SENSEPn
– V
SENSEMn
)
Single-Ended Voltage: V
SENSEMn
Current Sense Input Range (Odd
Numbered Channels Only)
N_ADC
Voltage Sense Resolution Uses L16
Format
Current Sense Resolution (Odd
Numbered Channels Only)
Single-Ended Voltage: V
SENSEPn
, V
SENSEMn
Differential Voltage: V
IN_ADC
0V ≤ V
IN_ADC
≤ 6V
0mV ≤ |V
IN_ADC
| < 16mV (Note13)
16mV ≤ |V
IN_ADC
| < 32mV
32mV ≤ |V
IN_ADC
| < 63.9mV
63.9mV ≤ |V
IN_ADC
| < 127.9mV
127.9mV ≤ |V
IN_ADC
|
V
IN_ADC
≥ 1.8V (Note 4 )
Voltage Sense Mode (Note 5)
Current Sense Mode, Odd Numbered
Channels Only, 15.6µV/LSB (Note 5)
DNL_ADC
Differential Nonlinearity
Voltage Sense Mode
Current Sense Mode, Odd Numbered
Channels Only
V
OS_ADC
Offset Error
Voltage Sense Mode
Current Sense Mode, Odd Numbered
Channels Only
GAIN_ADC
Gain Error
Voltage Sense Mode, V
IN_ADC
= 6V
Current Sense Mode, Odd Numbered
Channels Only, V
IN_ADC
= ±0.17V
(Note 3)
100
l
l
l
l
0
–0.1
–0.1
–170
122
15.625
31.25
62.5
125
250
6
0.1
6
170
V
V
V
mV
µV/LSB
µV/LSB
µV/LSB
µV/LSB
µV/LSB
µV/LSB
TUE_ADC
INL_ADC
Total Unadjusted Error
Integral Nonlinearity
l
l
l
l
l
l
l
l
l
±0.25
±854
±31.3
±400
±31.3
±250
±35
±0.2
±0.2
%
µV
µV
µV
µV
µV
µV
%
%
2978fc
5
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
