LTC1645 Linear Technology, LTC1645 Datasheet - Page 2

• Manufacturer Part Number: LTC1645
• Description: Dual-Channel Hot Swap Controller/Power Sequencer
• Manufacturer: Linear Technology

PACKAGE/ORDER I FOR ATIO
ABSOLUTE AXI U RATI GS
Supply Voltage (V
Input Voltage
Output Voltage
LTC1645
Consult factory for Military grade parts.
ELECTRICAL CHARACTERISTICS
The
2.375V V
SYMBOL
DC Characteristics
I
I
V
V
V
V
V
V
V
2
CC1
CC2
LKO1
LKO2
LKH n
FB
FBHST
COMP
COMPHST
V
V
FB
COMP
FB, ON, COMP
TIMER ................................................. – 0.3V to 2.5V
SENSE1 ..................... (V
SENSE2 ...................... (V
RESET, COMPOUT, FAULT .....................– 0.3V to 16V
GATE1, GATE2 ................. Internally Limited (Note 3)
SENSE2
GATE2
V
GND
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
CC2
T
JMAX
CC1
1
2
3
4
8-LEAD PLASTIC SO
= 125 C,
PARAMETER
V
V
V
V
V
FB Pin Voltage Threshold
FB Pin Threshold Line Regulation
FB Pin Voltage Threshold Hysteresis
COMP
COMP
COMP
S8 PACKAGE
CC1
CC2
CC1
CC2
CC n
TOP VIEW
12V, 1.2V V
Supply Current
Supply Current
Undervoltage Lockout
Undervoltage Lockout
Undervoltage Lockout Hysteresis
+
+
+
+
JA
CC1
W
Pin Voltage Threshold
Pin Threshold Line Regulation
Pin Voltage Threshold Hysteresis
..................... – 0.3V to (V
= 150 C/ W
, V
8
7
6
5
CC2
V
SENSE1
GATE1
ON
CC1
CC2
W W
) ................................. 13.2V
CC1
CC1
U
– 0.7V) to (V
– 0.7V) to (V
12V unless otherwise noted (Note 2).
S8 PART MARKING
ORDER PART
LTC1645CS8
LTC1645IS8
W
NUMBER
1645
1645I
U
CC1
CC1
CC2
CONDITIONS
ON = V
ON = V
High to Low
High to Low
High to Low
High to Low, V
High to Low
High to Low, V
+ 0.3V)
+ 0.3V)
+ 0.3V)
U
(Note 1)
CC1
CC1
= 5V, V
= 5V, V
CC1
CC1
Output Current
Operating Temperature Range
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
SENSE2
CC2
CC2
= 2.375V to 12V
= 2.375V to 12V
GATE2
RESET
FAULT
GATE1, GATE2 ............................................... 20mA
LTC1645C ............................................... 0 C to 70 C
LTC1645I ............................................ – 40 C to 85 C
V
GND
CC2
= 3.3V
= 3.3V
FB
T
JMAX
1
2
3
4
5
6
7
14-LEAD PLASTIC SO
= 125 C,
S PACKAGE
TOP VIEW
JA
= 110 C/ W
14
13
12
11
10
9
8
V
SENSE1
GATE1
TIMER
ON
COMPOUT
COMP
CC1
1.226
1.226
2.16
1.06
MIN
+
1.238
1.238
TYP
0.28
2.23
1.12
1.1
25
1
5
1
5
ORDER PART
LTC1645CS
LTC1645IS
NUMBER
1.250
1.250
MAX
1.18
2.0
0.4
2.3
4
4
A
= 25 C.
UNITS
mA
mA
mV
mV
mV
mV
mV
V
V
V
V