ltc2978 Linear Technology Corporation, ltc2978 Datasheet - Page 4

• Manufacturer Part Number: ltc2978
• Description: Octal Pmbus Power Supply Monitor And Controller With Eeprom
• Manufacturer: Linear Technology Corporation

elecTrical characTerisTics
temperature range, otherwise specifications are at T
otherwise indicated. C
LTC2978
SYMBOL
Power-Supply Characteristics
V
I
I
V
V
V
Voltage Reference Characteristics
V
ADC Characteristics
V
N_ADC
TUE_ADC
INL_ADC
DNL_ADC
V
GAIN_ADC
t
C
f

PWR
VDD33
CONV_ADC
IN_ADC
PWR
UVLO_VDD33
DD33
DD25
REF
IN_ADC
OS_ADC
IN_ADC
PARAMETER
V
V
V
V
V
Hysteresis
Supply Input Operating Range
Regulator Output Voltage
Regulator Output Short-Circuit Current V
Regulator Output Voltage
Regulator Output Short-Circuit Current V
Output Voltage
Temperature Coefficient
Hysteresis
Voltage Sense Input Range
Current Sense Input Range (Odd
Numbered Channels Only When So
Configured)
Voltage Sense Resolution
Current Sense Resolution (Odd
Numbered Channels Only When So
Configured)
Total Unadjusted Error
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Gain Error
Conversion Time
Input Sampling Capacitance
Input Sampling Frequency
PWR
PWR
DD33
DD33
DD33
Supply Input Operating Range
Supply Current
Supply Current
Undervoltage Lockout
Undervoltage Lockout
VDD33
= 100nF , C
VDD25
= 100nF and C
CONDITIONS
4.5V ≤ V
3.13V ≤ V
V
V
4.5V ≤ V
3.13V ≤ V
(Note 3)
Differential Voltage:
V
Single-Ended Voltage: V
Single-Ended Voltage: V
Differential Voltage: V
0V ≤ V
0mV ≤ |V
16mV ≤ |V
32mV ≤ |V
63.9mV ≤ |V
127.9mV ≤ |V
V
Voltage Sense Mode (Note 5)
Current Sense Mode, Odd Numbered
Channels Only, 15.6µV/LSB (Note 5)
Voltage Sense Mode
Current Sense Mode, Odd Numbered
Channels Only
Voltage Sense Mode
Current Sense Mode, Odd Numbered
Channels Only
Voltage Sense Mode, V
Current Sense Mode, Odd Numbered
Channels Only, V
Voltage Sense Mode (Note 6)
Current Sense Mode (Note 6)
Temperature Input (Note 6)
DD33
PWR
PWR
PWR
IN_ADC
IN_ADC
A
= 25°C. V
= V
= 4.5V, V
= V
Ramping Up, V
IN_ADC
= (V
≥ 1.8V (Note 4 )
PWR
PWR
IN_ADC
DD33
DD33
DD33
DD33
IN_ADC
IN_ADC
The
REF
SENSEPn
IN_ADC
≤ 15V, V
≤ 15V
≤ 6V
IN_ADC
= 3.47V, V
DD33
≤ 3.47V, V
≤ 3.47V
= 100nF .
| < 16mV
l
PWR
| < 32mV
| < 63.9mV
IN_ADC
denotes the specifications which apply over the full operating
| < 127.9mV
= 0V
|
– V
DD33
= V
IN_ADC
PWR
IN_ADC
= ±0.17V
SENSEMn
SENSEMn
SENSEPn
DD25
PWR
IN_SNS
= V
Floating
= 0V
= V
DD33
= 6V
, V
)
= 12V, V
DD33
SENSEMn
DD33
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
, V
DD25
–170
2.35
3.13
3.13
2.35
–0.1
–0.1
MIN
4.5
75
30
0
and REF pins floating, unless
15.625
1.232
31.25
2.55
3.26
62.5
6.15
24.6
24.6
62.5
TYP
120
100
122
125
250
2.5
10
10
90
55
3
1
±0.25
±31.3
±31.3
±854
±400
±250
MAX
3.47
3.47
±0.2
±0.2
140
170
±35
2.8
2.6
0.1
15
13
13
80
6
6
ppm/°C
µV/LSB
µV/LSB
µV/LSB
µV/LSB
µV/LSB
µV/LSB
UNITS
2978fa
ppm
kHz
mA
mA
mV
mA
mA
mV
ms
ms
ms
µV
µV
µV
µV
µV
µV
pF
%
%
%
V
V
V
V
V
V
V
V
V