LTC4215/LTC4215-2
4
4215fe
ELECTRICAL CHARACTERISTICS
The l denotes the speci cations which apply over the full operating
temperature range, otherwise speci cations are at T
A
= 25癈. V
DD
= 12V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Comparator Inputs
V
ON(TH)
ON Pin Threshold Voltage
V
ON
Rising
l
1.210
1.235
1.26
V
擵
ON(HYST)
ON Pin Hysteresis
l
60
128
180
mV
I
ON(IN)
ON Pin Input Current
V
ON
= 1.2V
l
0
?
糀
V
EN(TH)
EN Input Threshold
V
EN
= Rising
l
1.215
1.235
1.255
V
擵
EN(HYST)
EN Hysteresis
l
50
128
200
mV
I
EN
EN Pin Input Current
EN = 3.5V
l
0
?
糀
V
OV(TH)
OV Pin Threshold Voltage
V
OV
Rising
l
1.215
1.235
1.255
V
擵
OV(HYST)
OV Pin Hysteresis
l
10
30
40
mV
I
OV(IN)
OV Pin Input Current
V
OV
= 1.8V
l
0
?
糀
V
UV(TH)
UV Pin Threshold Voltage
V
UV
Rising
l
1.215
1.235
1.255
V
擵
UV(HYST)
UV Pin Hysteresis
l
60
80
100
mV
I
UV(IN)
UV Pin Input Current
V
UV
= 1.8V
l
0
?
糀
V
UV(RTH)
UV Pin Reset Threshold Voltage
V
UV
Falling
l
0.33
0.4
0.47
V
擵
UV(RHYST)
UV Pin Reset Threshold Hysteresis
l
60
125
210
mV
V
FB
Foldback Pin Power Good Threshold
FB Rising
l
1.215
1.235
1.255
V
擵
FB(HYST)
FB Pin Power Good Hysteresis
l
3
8
15
mV
I
FB
Foldback Pin Input Current
FB = 1.8V
l
0
?
糀
V
GPIO(TH)
GPIO Pin Input Threshold
V
GPIO
Rising
l
0.8
1
1.2
V
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
?
糀
I
SOURCE
SOURCE Pin Input Current
SOURCE = 15V
l
40
80
120
糀
t
P(GATE)
Input (ON, OV , UV , EN) to GATE Off
Propagation Delay
l
3
5
約
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
約
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
糀
I
TIMER(DOWN)
TIMER Pin Pulldown Current for OC Auto-Retry
l
1.4
2
2.6
糀
I
TIMER(UP/DOWN)
TIMER Current Up/Down Ratio
l
40
50
60
I
SS
Soft-Start Ramp Pull-Up Current
Ramping
Waiting for GATE to Slew
l
l
7.5
0.4
10
0.7
12.5
1.0
糀
糀
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
?.0
?.0
?.0
LSB
LSB
LSB
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