LTC4214-1 Datasheet, PDF (3/32 Pages) Linear Technology – Negative Low Voltage Hot Swap Controllers

LTC4214-1/LTC4214-2
ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T_A = 25°C. V_IN = 12V, UV = OV = 2.5V unless otherwise noted. (Note 2)
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
I_SENSE
I_INP
V_TMRH
V_TMRL
I_TMR
SENSE Pin Input Current
UV, OV Pin Input Current
TIMER Pin Voltage High Threshold
TIMER Pin Voltage Low Threshold
TIMER Pin Current
∆I_TMRACC
∆I_DRN
V_DRNL
I_DRNL
V_DRNCL
V_PGL
[(I_TMR at I_DRN = 20µA) – (I_TMR at I_DRN = 0µA)]
20µA
DRAIN Pin Voltage Low Threshold
DRAIN Leakage Current
DRAIN Pin Clamp Voltage
PWRGD Output Low Voltage
I_PGH
t_SS
t_PLLUG
t_PHLOG
PWRGD Pull-Up Current
SS Default Ramp Period
UV Low to Gate Low
OV High to Gate Low
V_SENSE = 50mV
UV = OV = 2.5V
Timer On (Initial Cycle/Latchoff/
Shutdown Cooling, Sourcing), V_TMR = 2.2V
Timer Off (Initial Cycle, Sinking), V_TMR = 2.2V
Timer On (Circuit Breaker, Sourcing,
I_DRN = 0µA), V_TMR = 2.2V
Timer On (Circuit Breaker, Sourcing,
I_DRN = 20µA), V_TMR = 2.2V
Timer Off (Circuit Breaker/
Shutdown Cooling, Sinking), V_TMR = 2.2V
Timer On (Circuit Breaker with I_DRN = 20µA)
For PWRGD Status
V_DRAIN = 2.5V
I_DRN = 20µA
I_PG = 1.6mA
I_PG = 5mA
V_PWRGD = 0V (Sourcing)
SS Pin Floating, V_SS Ramps from 0.2V to 1.4V
q
q
q 1.109
3.5
q
q
q –30
– 15
±0.1
3
1.7
–5
28
– 40
– 200
5
8
1.232
±0.1
4.2
0.2
–50
130
0.4
0.4
– 30
±1
1.355
±1
5
0.4
1.1
–70
µA
µA
V
V
µA
mA
µA
µA
µA
µA/µA
V
µA
V
V
V
µA
µs
µs
µs
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 V_EE unless otherwise
specified.
TYPICAL PERFOR
otherwise specified.
I_IN vs Temperature
1200 _{VIN = 12V}
1100
1000
900
A CE CHARACTERISTICS All voltages are referenced to V_EE Unless
I_IN vs V_IN
1.6
1.4
1.2
1.0
T_A = –40°C
T_A = 25°C
T_A = 85°C
T_A = 125°C
Undervoltage Lockout
V_LKO vs Temperature
6
5.8
5.6
5.4
5.2
800
0.8
5
700
0.6
4.8
4.6
600
0.4
4.4
500
0.2
4.2
400
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
4214 G01
0
0 2 4 6 8 10 12 14 16 18 20
V_IN (V)
4214 G02
4
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
4214 G03
421412f
3