LTC4251 LINER [Linear Technology], LTC4251 Datasheet - Page 2

• Manufacturer Part Number: LTC4251
• Description: Negative Voltage Hot Swap Controllers in SOT-23
• Manufacturer: LINER [Linear Technology]

ABSOLUTE AXI U RATI GS
SYMBOL
V
r
I
V
V
V
V
V
I
V
V
V
V
V
V
LTC4251/LTC4251-1/
LTC4251-2
Current into V
Minimum V
Gate, UV/OV, Timer Voltage .......................– 0.3V to 16V
Sense Voltage ............................................– 0.6V to 16V
Current Out of Sense Pin (20µs Pulse) ............. –200mA
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
temperature range, otherwise specifications are at T
(Note 1), All Voltages are Referred to V
2
ELECTRICAL CHARACTERISTICS
IN
GATE
Z
Z
LKO
LKH
CB
ACL
FCL
GATE
GATEL
UVHI
UVLO
UVHST
OVHI
LTC4251C/LTC4251-1C/LTC4251-2C ...... 0°C to 70°C
LTC4251I/LTC4251-1I/LTC4251-2I .... – 40°C to 85°C
PARAMETER
V
V
V
V
V
Circuit Breaker Current Limit Voltage
Analog Current Limit Voltage
Fast Current Limit Voltage
GATE Pin Output Current
External MOSFET Gate Drive
Gate Low Threshold
UV Threshold High
UV Threshold Low
UV Hysteresis
OV Threshold High
IN
IN
IN
IN
IN
IN
to V
to V
Supply Current
Undervoltage Lockout
Undervoltage Lockout Hysteresis
IN
Voltage ........................................... – 0.3V
(100µs Pulse) ........................... 100mA
EE
EE
W
Zener Voltage
Zener Dynamic Impedance
W W
EE
CONDITIONS
I
I
UV/OV = 4V, V
Coming out of UVLO (Rising V
V
V
V
UV/OV = 4V, V
UV/OV = 4V, V
UV/OV = 4V, V
V
(Before Gate Ramp-Up)
LTC4251/LTC4251-2
LTC4251-1
LTC4251/LTC4251-2
LTC4251-1
LTC4251/LTC4251-2
LTC4251-1
LTC4251
LTC4251-1
IN
IN
CB
ACL
FCL
GATE
U
= 2mA
= 2mA to 30mA
A
= (V
= (V
= (V
= 25°C. (Notes 2, 3)
– V
SENSE
SENSE
SENSE
EE
The
, I
IN
IN
– V
SENSE
SENSE
SENSE
– V
– V
●
= 2mA
= (V
EE
denotes the specifications which apply over the full operating
EE
EE
)
)
= V
– V
– V
)
Z
– 0.3V)
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
EE
EE
EE
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
ORDER PART NUMBER
, V
= 0.15V, V
= 0.3V, V
GATE
IN
LTC4251CS6
LTC4251IS6
LTC4251-
1CS6
LTC4251-1IS6
LTC4251-
2CS6
LTC4251-2IS6
)
= 0V (Sourcing)
GATE
GATE
= 1V (Sinking)
= 3V (Sinking)
SENSE 1
V
V
T
EE
http://www.linear.com/leadfree/
IN
JMAX
6-LEAD PLASTIC SOT-23
2
3
*UV FOR LTC4251-2
= 125°C, θ
S6 PACKAGE
TOP VIEW
●
●
●
●
●
●
●
●
●
●
●
●
●
●
JA
= 256°C/W
3.075
2.300
2.775
2.050
U
11.5
5.85
5.86
MIN
150
S6 PART MARKING
40
80
40
10
6 GATE
5 UV/OV*
4 TIMER
3.225
2.420
2.925
2.160
LTUQ
LTUR
LTQU
LTQV
LTK6
LTAAZ
0.30
0.26
6.15
6.17
TYP
100
200
190
0.8
9.2
0.5
13
50
58
17
12
5
1
W
3.375
2.540
3.075
2.270
MAX
14.5
11.5
6.45
6.48
120
300
60
80
V
2
Z
425112fa
UNITS
U
mA
mV
mV
mV
mA
mA
µA
Ω
V
V
V
V
V
V
V
V
V
V
V
V
V