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| LTC4215-1 Datasheet, PDF (3/28 Pages) Linear Technology – Hot Swap Controller with I2C Compatible Monitoring | |||
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LTC4215-1
ELECTRICAL CHARACTERISTICS The l denotes the speciï¬cations which apply over the full operating
temperature range, otherwise speciï¬cations are at TA = 25°C. VDD = 12V unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
INTVCC
Internal Regulator Voltage
INTVCC(UVL) INTVC Undervoltage Lockout
INTVCC(HYST) INTVC Undervoltage Lockout Hysteresis
Current Limit and Circuit Breaker
VDD ⥠3.3V
INTVCC Rising
l 2.9
3.1
3.4
V
l 2.55 2.64 2.79
V
l 20
55
75
mV
ÎVSENSE(TH)
ÎVSENSE
Circuit Breaker Threshold (VDD â VSENSE)
Current Limit Voltage (VDD â VSENSE)
tD(OC)
ISENSE(IN)
Gate Drive
OC Fault Filter
SENSE± Pin Input Current
VFB = 1.3V
VFB = 0V
Start-Up Timer Expired
ÎVSENSE = 50mV
VSENSE = 12V
l 22.5
25
27.5
mV
l 22
25
29
mV
l 6.5
10
13
mV
l 65
75
90
mV
l 15
20
30
μs
l 10
20
35
μA
ÎVGATE
External N-channel Gate Drive (VGATE â VSOURCE) VDD = 2.9V to 15V
(Note 3)
l 4.7
5.9
6.5
V
IGATE(UP)
External N-channel Gate Pull-Up Current
Gate On, VGATE = 0V
l â15
â20
â30
μA
IGATE(DN)
External N-channel Gate Pull-Down Current
Gate Off, VGATE = 15V
l 0.8
1
1.6
mA
IGATE(DN) Fast Pull-Down Current from GATE to SOURCE During VDD â SENSE = 100mV, VAS = 4V
OC/UVLO
300
450
700
mA
tPHL(SENSE)
(VDD â SENSE) High to GATE Low
VDD â SENSE = 100mV, CAS = 10nF l
0.5
1
μs
VGS(POWERBAD) Gate-Source Voltage for Power Bad Fault
VSOURCE = 2.9V â 15V
l 3.8
4.3
4.7
V
Comparator Inputs
VON(TH)
ÎVON(HYST)
ION(IN)
VEN(TH)
ÎVEN(HYST)
IEN
ON Pin Threshold Voltage
ON Pin Hysteresis
ON Pin Input Current
EN Input Threshold
EN Hysteresis
EN Pin Input Current
VON Rising
VON = 1.2V
VEN = Rising
EN = 3.5V
l 1.210 1.235 1.26
V
l 60
128
180
mV
l
0
±1
μA
l 1.215 1.235 1.255
V
l 50
128
200
mV
l
0
±1
μA
VOV(TH)
ÎVOV(HYST)
IOV(IN)
VUV(TH)
ÎVUV(HYST)
IUV(IN)
VUV(RTH)
ÎVUV(RHYST)
VFB
ÎVFB(HYST)
IFB
OV Pin Threshold Voltage
OV Pin Hysteresis
OV Pin Input Current
UV Pin Threshold Voltage
UV Pin Hysteresis
UV Pin Input Current
UV Pin Reset Threshold Voltage
UV Pin Reset Threshold Hysteresis
Foldback Pin Power Good Threshold
FB Pin Power Good Hysteresis
Foldback Pin Input Current
VOV Rising
VOV = 1.8V
VUV Rising
VUV = 1.8V
VUV Falling
FB Rising
FB = 1.8V
l 1.215 1.235 1.255
V
l 10
30
40
mV
l
0.2
±1
μA
l 1.215 1.235 1.255
V
l 60
80
100
mV
l
0.2
±1
μA
l 0.33
0.4
0.47
V
l 60
125
210
mV
l 1.215 1.235 1.255
V
l
3
8
15
mV
l
0.2
±1
μA
VGPIO1(TH)
VGPIO2(TH)
VGPIO3(TH)
GPIO1 Pin Input Threshold
GPIO2 Pin Input Threshold
GPIO3 Pin Input Threshold
VGPIO1 Rising
VGPIO2 Rising
VGPIO3 Rising
l 0.8
1
1.2
V
l
1
1.6
2
V
l
1
1.6
2
V
42151fa
3
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