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LTM4681
ELECTRICAL CHARACTERISTICS
operating temperature range (Note 2). Specified as each individual output channel (Note 4). T
RUNP = 0, FREQUENCY_SWITCH = 350kHz and V
EEPROM settings and per Test Circuit 1, unless otherwise noted.
SYMBOL
PARAMETER
I
Output Current Full-Scale Digitizable
O-F/S
Range
I
Output Current, Readback Accuracy
O-RB-ACC
I
Full Load Output Current Readback
O-RB(31.25A)
t
Output Current Readback Update
CONVERT-IO-RB
Rate
Input Current Readback
N
Resolution
V
LSB Step Size Full-Scale Range = 16mV
IINSTP
LSB Step Size Full-Scale Range = 32mV
LSB Step Size Full-Scale Range = 64mV
I
Total Unadjusted Error
IN_TUE
V
Zero-Code Offset Voltage
OS
t
Update Rate
CONVERT
Supply Current Readback
N
Resolution
V
LSB Step Size Full-Scale Range =
ICHIPSTP
256mV
I
I
Readback
CHIP_RB
CHIP
t
Update Rate
CONVERT
Temperature Readback (T0, T1)
T
Temperature Readback Resolution
RES-RB
T0_TUE
External Temperature Total
Unadjusted Readback Error
T1_TUE
Internal TSNS TUE
t
Update Rate
CONVERT
INTV
Regulator/V
CC_nn
BIAS
V
Internal V
Voltage No Load
INTVCC_nn
CC
V
INTV
Load Regulation
LDO_INT
CC
V
Input Range for V
IN_VBIAS
RUNP
V
Enable
BIAS
V
5.5V Internal Regulator
BIAS
8
The
commanded to 1.000V unless otherwise noted. Configured with factory-default
OUTn
CONDITIONS
(Note 15)
Utilizing MFR_PWM_MODE[7] = 1, Using IOUT_OC_
FAULT_LIMIT = 61A, Page 98
READ_IOUTn, Channels 0–3, 0 ≤ I
Forced-Continuous Mode, MFR_PWM_MODEn[0] = 1b
0°C to 125°C
–40°C to 125°C
See Histograms in Typical Performance Characteristics
(Note 12)
(Note 12). See Histograms in Typical Performance
Characteristics
MFR_ADC_CONTROL = 0x00 (Notes 9, 15)
MFR_ADC_CONTROL = 0x06 (CH0,2 I
(Notes 9, 15) See MFR_ADC_CONTROL SECTION
(Note 10)
Gain = 8, 0V ≤ |V
Gain = 4, 0V ≤ |V
Gain = 2, 0V ≤ |V
Gain = 8, 2.5mV ≤ |V
Gain = 4, 4mV ≤ |V
Gain = 2, 6mV ≤ |V
(Note 15)
(Notes 9,15) See MFR_ADC_CONTROL SECTION for
Faster Update Rates
(Note 10)
Offboard 1Ω Resistor
SV
Current
IN_nn
(Notes 9,15) See MFR_ADC_CONTROL SECTION for
Faster Update Rates
Channel n, and Controller (Note 15)
Supporting Only ∆V
V
= 0.0, f
RUNn
(Note 9)
MFR_ADC_CONTROL = 0x04 or 0x0C (Notes 9, 15)
6V ≤ SV
IN_nn
I
= 0mA to 20mA, 6V ≤ SV
CC
IN_VBIAS
RUNP Rising
7V ≤ V
IN_VBIAS
For more information
denotes the specifications which apply over the specified internal
l
≤ 30A,
OUTn
) or 0x0A (CH1,3 I
OUT
+
–
– V
| ≤ 5mV
IIN
IIN
+
–
– V
| ≤ 20mV
IIN
IIN
+
–
– V
| ≤ 50mV
IIN
IIN
+
–
– V
| (Note 7)
IIN
IIN
+
–
– V
| (Note 7)
IIN
IIN
+
–
– V
| (Note 7)
IIN
IIN
Sensing
BE
= 0kHz (Note 7)
SYNC
≤ 16V
≤ 16V
IN_nn
≤ 16V
www.analog.com
= 25°C, V
= 12V, RUNn = 3.3V,
A
IN
MIN
TYP
54
Within 1.25A of Reading
Within 1.5A of Reading
l
31.25
90
)
8
OUT
10
15.26
30.52
61
l
l
l
90
10
244
±50
90
0.25
2.5
±1
90
8
5.25
5.5
l
0.5
4.5
0.8
5.25
5.5
MAX
UNITS
A
A
ms
ms
Bits
µV
µV
µV
±2
%
±1.3
%
±1.2
%
±50
µV
ms
Bits
µV
mA
ms
°C
°C
°C
ms
ms
5.75
V
±2
%
16
V
0.85
V
5.75
V
Rev. A
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