Datasheet

LTC4280
4
4280f
ELECTRICAL CHARACTERISTICS
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD
= 12V unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Other Pin Functions
V
GPIO(OL)
GPIO Pin Output Low Voltage I
GPIO
= 5mA
l
0.25 0.5 V
I
GPIO(OH)
GPIO Pin Input Leakage Current V
GPIO
= 15V
l
0
±1
µA
I
SOURCE
SOURCE Pin Input Current SOURCE = 15V
l
40 80 120 µA
t
P(GATE)
Input (ON, OV, UV, EN) to GATE Off
Propagation Delay
l
35 µs
t
D(GATE)
Turn-On Delay ON
UV, OV, EN
Overcurrent Auto-Retry
l
l
l
50
2.5
1
100
5
2
150
75
µs
ms
s
V
TIMERL(TH)
Timer Low Threshold
l
0.17 0.2 0.23 V
V
TIMERH(TH)
Timer High Threshold
l
1.2 1.235 1.26 V
I
TIMER(UP)
TIMER Pin Pull-Up Current
l
–80 –100 –120 µA
I
TIMER(DOWN)
TIMER Pin Pulldown Current for OC Auto-Retry
l
1.4 2 2.6 µA
I
TIMER(UP/DOWN)
TIMER Current Up/Down Ratio
l
40 50 60
V
FILTER(TH)
FILTER High Threshold
l
1.2 1.235 1.27 V
I
FILTER
FILTER Timer Current During OC FILTER = 0.5V
l
–7.5 –10 –12.5 µA
After OC FILTER = 0.5V
l
1 2 3.5 µA
During Startup FILTER = 0.5V
l
.03 0.6 1.2 mA
ADC
RES Resolution (No Missing Codes)
l
8 Bits
INL Integral Nonlinearity V
DD
– SENSE (Note 5)
SOURCE
ADIN
l
l
l
–2
–1.25
–1.25
0.5
0.2
0.2
2
1.25
1.25
LSB
LSB
LSB
V
OS
Offset Error (Note 4) V
DD
– SENSE
SOURCE
ADIN
l
l
l
±2.0
±1.0
±1.0
LSB
LSB
LSB
TUE Total Unadjusted Error V
DD
– SENSE
SOURCE
ADIN
l
l
l
±5.5
±5.0
±5.0
LSB
LSB
LSB
FSE Full-Scale Error V
DD
– SENSE
SOURCE
ADIN
l
l
l
±5.5
±5.0
±5.0
LSB
LSB
LSB
V
FS
Full-Scale Voltage (255 • V
LSB
)V
DD
– SENSE
SOURCE
ADIN
l
l
l
37.625
15.14
1.205
38.45
15.44
1.23
39.275
15.74
1.255
mV
V
V
R
ADIN
ADIN Pin Sampling Resistance V
ADIN
= 1.28V
l
12
MΩ
I
ADIN
ADIN Pin Input Current V
ADIN
= 1.28V
l
0
±0.1
µA
Conversion Rate 10 Hz