LTC4224-1/LTC4224-2
3
422412fa
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to GND unless otherwise
speci ed.
The l denotes the speci cations which apply over the full operating
temperature range. T
A
= 25癈, V
CC1
= 5V, V
CC2
= 3.3V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supplies
V
CC
V
CC
Supply Range
V
CC
= Max (V
CC1
, V
CC2
)
l
2.7
6
V
I
CC
V
CC
Supply Current
l
1.4
3
mA
V
CC(UVL)
V
CC
Undervoltage Lockout
V
CC
Rising
l
2.2
2.4
2.65
V
V
CCLO
V
CCLO
Supply Range
V
CCLO
= Min (V
CC1
, V
CC2
),
V
CC
e 2.7V
l
1
6
V
I
CCLO
V
CCLO
Supply Current
l
40
100
糀
V
CCLO(UVL)
V
CCLO
Undervoltage Lockout
V
CCLO
Falling
l
0.76
0.8
0.84
V
External Gate Drive
擵
GATE
Gate Drive
(V
GATEn
V
CC
)
I
GATEn
= 0糀, 1糀
l
4.5
5.5
7
V
I
GATE(UP)
Gate Pull-Up Current
Gate Drive On, V
GATEn
= 1V
l
7
10
13
糀
I
GATE(DN)
Gate Pull-Down Current
V
ONn
= 1V , V
GATEn
= 10V
l
0.5
1.5
3
mA
I
GATE(FPD)
Gate Fast Pull-Down Current
Fast Turn-Off, V
GATEn
= 10V
l
50
125
200
mA
Current Limit
擵
SENSE(CB)
Circuit Breaker Trip Sense Voltage
(V
CCn
SENSEn)
l
22.5
25
27.5
mV
I
SENSE
SENSE Input Current
V
SENSE1
= 5V , V
SENSE2
= 3.3V
l
40
100
糀
Inputs and Outputs
V
ON(TH)
ONn Threshold Voltage
V
ONn
Rising
l
0.76
0.8
0.84
V
擵
ON(HYST)
ONn Hysteresis
l
15
30
50
mV
I
ON(IN)
ONn Pull-Up Current
V
ONn
= 1V
l
5
10
15
糀
V
OL
Output Low Voltage (FAULT)
I
FAULT
= 3mA
l
0.2
0.4
V
Delay
t
CB
Circuit Breaker Delay
l
2.5
5
7.5
ms
t
PHL(SENSE)
Sense Voltage, (V
CCn
SENSEn) High to
GATE Low
擵
SENSE
= 200mV , C
GATE
= 10nF
l
0.4
1
約
t
PLH(GATE)
ONn Low or Input Supply High to GATEn
High Prop Delay
l
5
10
15
ms
t
PLH(UVL)
V
CCn
Low to GATEn Low Prop Delay
l
8
16
約
t
D(UV)
UV Turn-On Delay
V
CC
Out of UV
l
80
160
240
ms
t
D(COOL)
Auto-Retry Cooling Delay
Note 3
l
2
4
6
s
t
BLANK
Start-Up Circuit Breaker Blanking Delay
l
2.5
5
7.5
ms
Note 3: LTC4224-2 only.
Note 4: The greater of V
CC1
and V
CC2
is the internal supply voltage (V
CC
).
An internal clamp limits the GATE pin to a minimum 5V above V
CC
. Driving
this pin beyond the clamp may damage the device.
发布紧急采购，3分钟左右您将得到回复。
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