LTC4252-2 Linear Technology, LTC4252-2 Datasheet - Page 4

• Manufacturer Part Number: LTC4252-2
• Description: Negative Voltage Hot Swap Controllers
• Manufacturer: Linear Technology

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LTC4252-1/LTC4252-2
LTC4252A-1/LTC4252A-2
temperature range, otherwise specifications are at T
SYMBOL
I
∆I
V
I
V
V
I
t
t
t
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.
4
ELECTRICAL CHARACTERISTICS
TMR
DRNL
PGH
SS
PLLUG
PHLOG
∆I
DRNL
DRNCL
PGL
TMRACC
DRN
PARAMETER
TIMER Pin Current
[(I
DRAIN Pin Voltage Low Threshold
DRAIN Leakage Current
DRAIN Pin Clamp Voltage
PWRGD Output Low Voltage
PWRGD Pull-Up Current
SS Default Ramp Period
UV Low to Gate Low
OV High to Gate Low
TMR
at I
DRN
= 50µA) – (I
∆I
DRN
TMR
at I
DRN
= 0µA)] Timer On (Circuit Breaker with
A
CONDITIONS
Timer On (Initial Cycle/Latchoff/
Shutdown Cooling, Sourcing),
V
Timer Off (Initial Cycle, Sinking),
V
Timer On (Circuit Breaker, Sourcing,
I
Timer On (Circuit Breaker, Sourcing,
I
Timer Off (Circuit Breaker/
Shutdown Cooling, Sinking),
V
I
For PWRGD Status (MS Only)
V
I
I
I
V
SS pin floating, V
0.2V to 2V
SS pin floating, V
0.1V to 0.9V
DRN
DRN
DRN
DRN
PG
PG
TMR
TMR
TMR
DRAIN
PWRGD
= 25°C. (Note 2)
= 1.6mA (MS Only)
= 5mA (MS Only)
= 0µA), V
= 50µA), V
= 50µA)
= 50µA
= 2V
= 2V
= 2V
The
= 5V (4V for LTC4252A)
= 0V (Sourcing) (MS Only)
●
denotes the specifications which apply over the full operating
TMR
TMR
SS
SS
= 2V
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to V
specified.
= 2V
ramps from
ramps from
●
●
●
MIN
40
LTC4252-1/-2
2.385
±0.1
TYP MAX
230
630
180
5.8
5.8
0.2
0.4
0.4
28
58
8
7
0.4
1.1
±1
80
MIN
40
LTC4252A-1/-2
EE
unless otherwise
2.385
±0.1
TYP
230
630
230
5.8
5.8
0.2
0.4
0.4
28
58
8
6
MAX
0.4
1.1
±1
80
425212fb
UNITS
µA/µA
mA
µA
µA
µA
µA
µA
µA
µs
µs
µs
µs
V
V
V
V