LTC1644CGN Linear Technology, LTC1644CGN Datasheet - Page 2

• Manufacturer Part Number: LTC1644CGN
• Description: IC CONTROLLER HOT SWAP 20-SSOP
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LTC1644CGN

• Applications: CompactPCI™
• Internal Switch(s): No
• Voltage - Supply: 3.3V, 5V, ±12V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP (0.154", 3.91mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

ABSOLUTE AXI U RATI GS
LTC1644
(Note 1)
Supply Voltages
Input Voltages (Pins 5, 9) .......................– 0.3V to 13.5V
Output Voltages (Pins 6, 7, 10) ..............– 0.3V to 13.5V
Analog Voltages and Currents
Operating Temperature Range
Storage Temperature Range ................. – 65 C to 150 C
Lead Temperature (Soldering, 10 sec).................. 300 C
ELECTRICAL CHARACTERISTICS
The
V
SYMBOL
I
V
V
V
t
t
I
V
I
T
2
DD
OC
SC
CP
CL
TS
LKO
FB
CB
DROP
12VIN
V
GATE
12V
V
Pins 3, 11 to 14, 16 to 18 ...................– 0.3V to 13.5V
Pins 4, 15 ............................. – 0.3V to (12V
V
12V
LTC1644C ............................................... 0 C to 70 C
LTC1644I ............................................ – 40 C to 85 C
EEIN
EEOUT
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
= 12V, V
IN
OUT
.................................................................. –14V
................................................................ 13.2V
PARAMETER
V
Undervoltage Lockout
Foldback Current Limit Voltage
Circuit Breaker Trip Voltage
Overcurrent Fault Response Time
Short-Circuit Response Time
GATE Pin Output Current
External Gate Voltage
Internal Switch Voltage Drop
Current Foldback
Thermal Shutdown Temperature
12VIN
...................................................– 14V to 0.3V
...............................................– 0.3V to 13.2V
EEIN
Supply Current
= –12V, V
W
3VIN
W W
= 3.3V, V
5VIN
CONDITIONS
OFF/ON = 0V
12V
3V
V
V
V
V
V
V
(V
(V
(V
(V
OFF/ON = 0V, V
V
OFF/ON = 0V, V
V
V
12V
12V
V
V
FB
FB
FB
FB
CB
CB
GATE
V
DROP
DROP
EEIN
EEIN
5VIN
3VIN
5VIN
3VIN
IN
GATE
IN
IN
IN
= (V
= (V
= (V
= (V
= (V
= (V
, 5V
= 5V unless otherwise noted.
, Ramping Down
= –12V, V
= –12V, V
= 5V, OFF/ON = 4V
= 12V, 12V
= 12V, 12V
– V
– V
– V
– V
= (V
= (V
= (V
5VIN
5VIN
3VIN
3VIN
IN
5VIN
3VIN
U
5VSENSE
3VSENSE
5VSENSE
3VSENSE
, Ramping Down
12VIN
EEOUT
IN
12VIN
– V
– V
– V
– V
– V
– V
+ 0.3V)
GATE
GATE
EEOUT
EEOUT
5VSENSE
5VSENSE
3VSENSE
3VSENSE
5VSENSE
3VSENSE
– V
– V
OUT
OUT
– V
) = 100mV, TIMER = FLOAT
) = 100mV, TIMER = FLOAT
) = 200mV, TIMER = FLOAT
) = 200mV, TIMER = FLOAT
12VOUT
= 0V, TIMER = 0V
= 2V, TIMER = FLOAT, FAULT = 0V
EEIN
GATE
= 0V, TIMER = 0V
= 10V, TIMER = 0V
= 0V, TIMER = 0V
= –10V, TIMER = 0V
), V
), V
), V
), V
), TIMER = FLOAT
), TIMER = FLOAT
), I
), I
), I = 500mA
EE
5VOUT
5VOUT
3VOUT
3VOUT
GATE
= 100mA
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
= –1 A
= 0V, TIMER = 0V
= 3V, TIMER = 0V
= 0V, TIMER = 0V
= 2V, TIMER = 0V
RESETOUT
RESETIN
PWRGD
OFF/ON
TIMER
FAULT
5V
12V
V
GND
EEIN
OUT
IN
T
JMAX
20-LEAD PLASTIC SSOP
10
1
2
3
4
5
6
7
8
9
= 140 C,
GN PACKAGE
TOP VIEW
JA
= 135 C/W
20
19
18
17
16
15
14
13
12
11
12V
V
3V
3V
3V
GATE
5V
5V
PRECHARGE
DRIVE
– 525
6.00
2.25
EEOUT
MIN
– 20
– 50
100
200
40
40
40
40
30
30
20
OUT
IN
SENSE
SENSE
IN
8
8
3
OUT
U
–360
– 840
8.30
2.48
TYP
– 65
225
200
110
100
320
130
0.1
0.1
12
51
12
51
55
55
45
45
10
50
3
ORDER PART
LTC1644CGN
LTC1644IGN
W
NUMBER
– 1500
10.80
–100
– 600
MAX
2.75
300
200
600
250
300
650
1.0
1.0
A
15
70
15
70
70
70
60
60
20
8
= 25 C.
UNITS
U
1644f
mA
mV
mV
mV
mV
mV
mV
mA
mV
mV
mV
mA
mA
mA
mA
V
V
A
A
C
s
s
s
s