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LTC4214-2 Datasheet(PDF) 3 Page - Linear Technology

Part # LTC4214-2
Description  Negative Low Voltage Hot Swap Controllers
Download  32 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4214-2 Datasheet(HTML) 3 Page - Linear Technology

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LTC4214-1/LTC4214-2
3
421412f
ISENSE
SENSE Pin Input Current
VSENSE = 50mV
q
–15
–30
µA
IINP
UV, OV Pin Input Current
UV = OV = 2.5V
q
±0.1
±1
µA
VTMRH
TIMER Pin Voltage High Threshold
3V
VTMRL
TIMER Pin Voltage Low Threshold
1.7
V
ITMR
TIMER Pin Current
Timer On (Initial Cycle/Latchoff/
–5
µA
Shutdown Cooling, Sourcing), VTMR = 2.2V
Timer Off (Initial Cycle, Sinking), VTMR = 2.2V
28
mA
Timer On (Circuit Breaker, Sourcing,
–40
µA
IDRN = 0µA), VTMR = 2.2V
Timer On (Circuit Breaker, Sourcing,
–200
µA
IDRN = 20µA), VTMR = 2.2V
Timer Off (Circuit Breaker/
5
µA
Shutdown Cooling, Sinking), VTMR = 2.2V
∆ITMRACC [(ITMR at IDRN = 20µA) – (ITMR at IDRN = 0µA)] Timer On (Circuit Breaker with IDRN = 20µA)
8
µA/µA
∆IDRN
20
µA
VDRNL
DRAIN Pin Voltage Low Threshold
For PWRGD Status
q
1.109
1.232
1.355
V
IDRNL
DRAIN Leakage Current
VDRAIN = 2.5V
±0.1
±1
µA
VDRNCL
DRAIN Pin Clamp Voltage
IDRN = 20µA
3.5
4.2
5
V
VPGL
PWRGD Output Low Voltage
IPG = 1.6mA
q
0.2
0.4
V
IPG = 5mA
q
1.1
V
IPGH
PWRGD Pull-Up Current
VPWRGD = 0V (Sourcing)
q
–30
–50
–70
µA
tSS
SS Default Ramp Period
SS Pin Floating, VSS Ramps from 0.2V to 1.4V
130
µs
tPLLUG
UV Low to Gate Low
0.4
µs
tPHLOG
OV High to Gate Low
0.4
µs
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, UV = OV = 2.5V unless otherwise noted. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to VEE unless otherwise
specified.
TYPICAL PERFOR A CE CHARACTERISTICS
TEMPERATURE (
°C)
800
900
1000
4214 G01
700
600
400
500
1200
1100
–55
105
–15
25
65
–35
125
545
85
VIN = 12V
VIN (V)
0.8
1.0
1.2
4214 G02
0.6
0.4
0
0.2
1.6
1.4
018
16
48
12
220
610
14
TA = –40°C
TA = 25°C
TA = 85°C
TA = 125°C
TEMPERATURE (
°C)
–55
6
5.8
5.6
5.4
5.2
5
4.8
4.6
4.4
4.2
4
–15
25
45
125
4214 G03
–35
5
65
85 105
IIN vs Temperature
IIN vs VIN
Undervoltage Lockout
VLKO vs Temperature
All voltages are referenced to VEE Unless
otherwise specified.


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