LT1640AL LINER [Linear Technology], LT1640AL Datasheet - Page 3

• Manufacturer Part Number: LT1640AL
• Description: Negative Voltage Hot Swap Controllers
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
V
r
I
V
V
V
V
V
V
V
V
R
I
V
V
V
I
V
V
V
V
V
V
V
V
V
V
V
I
I
V
V
IN
SS
GATE
SENSE
INP
Z
Z
LKO
LKH
CB
ACL
ACL
CB
FCL
SS
OS
ACL
SS
GATE
GATEH
GATEL
UVHI
UVLO
UV
UVHST
OVHI
OVLO
OV
OVHST
TMRH
TMRL
SS
/
+V
OS
/
PARAMETER
V
V
V
V
V
Circuit Breaker Current Limit Voltage
Analog Current Limit Voltage
Analog Current Limit Voltage/
Circuit Breaker Voltage
Fast Current Limit Voltage
SS Voltage
SS Output Impedance
SS Pin Current
Analog Current Limit Offset Voltage
Ratio (V
GATE Pin Output Current
External MOSFET Gate Drive
Gate High Threshold
Gate Low Threshold
UV Pin Threshold HIGH
UV Pin Threshold LOW
UV Pin Threshold
UV Pin Hysteresis
OV Pin Threshold HIGH
OV Pin Threshold LOW
OV Pin Threshold
OV Pin Hysteresis
SENSE Pin Input Current
UV, OV Pin Input Current
TIMER Pin Voltage High Threshold
TIMER Pin Voltage Low Threshold
IN
IN
IN
IN
IN
Undervoltage Lockout
Undervoltage Lockout Hysteresis
– V
– V
Supply Current
EE
EE
ACL
Zener Voltage
Zener Dynamic Impedance
+ V
OS
) to SS Voltage
CONDITIONS
I
I
UV = OV = 4V, V
Coming Out of UVLO (Rising V
V
V
SS = Open or 2.2V
V
SS = Open or 1.4V
V
After End of SS Timing Cycle
UV = OV = 4V, V
V
UV = OV = 0V, V
V
UV = OV = 4V, V
V
UV = OV = 4V, V
V
UV = OV = 4V, V
V
V
V
for PWRGD Status (MS Only)
(Before Gate Ramp-Up)
Low-to-High Transition
(
Low-to-High Transition
(
UV = OV = 4V, V
UV = OV = 4V
IN
IN
●
●
CB
ACL
ACL
FCL
SS
SS
GATE
GATE
GATE
GATE
GATEH
= 2mA
= 2mA to 30mA
for LTC4252A Only)
for LTC4252A Only)
= (V
= 0V (Sourcing)
= 2V (Sinking)
A
= (V
= (V
= (V
= 0V (Sourcing)
= 3V (Sinking)
= 1V (Sinking)
– V
= 25°C. (Note 2)
= V
SENSE
SENSE
SENSE
SENSE
EE
IN
, I
The
– V
IN
– V
– V
– V
– V
IN
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
= 2mA
GATE
l
EE
= (V
EE
EE
EE
denotes the specifications which apply over the full operating
)
)
),
),
, I
= V
= V
= V
– V
– V
= 50mV
Z
IN
– 0.3V)
EE
EE
EE
EE
EE
= 2mA,
,
,
,
= 0.15V,
= 0.3V,
IN
LTC4252A-1/LTC4252A-2
)
l
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
LTC4252-1/LTC4252-2
3.075 3.225 3.375
2.775 2.925 3.075
11.5
5.85
5.25
MIN
150
40
80
40
10
LTC4252-1/-2
± 0.1
0.05
6.15
5.55
TYP
100
200
100
190
300
600
0.8
9.2
2.2
2.8
0.5
–15
13
50
22
28
10
58
17
12
5
1
4
1
MAX
14.5
11.5
6.45
5.85
120
300
–30
60
80
±1
V
2
Z
11.5
1.05
3.05
5.04
MIN
150
292
45
40
10
82
LTC4252A-1/-2
± 0.1
1.20
0.05
3.08
5.09
TYP
200
190
324
102
0.9
0.5
1.4
2.8
0.5
–15
13
50
50
28
10
58
17
12
5
9
28
4
1
MAX
14.5
1.38
3.11
5.14
300
356
122
–30
10
55
80
±1
V
2
Z
425212fd
UNITS
3
mA
mV
mV
V/V
mV
mA
mV
V/V
mA
mA
mV
mV
kΩ
μA
μA
μA
μA
Ω
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V