LTC1643AL-1IGN#TR Linear Technology, LTC1643AL-1IGN#TR Datasheet - Page 6

• Manufacturer Part Number: LTC1643AL-1IGN#TR
• Description: IC CTRLR HOTSWAP PCI BUS 16SSOP
• Manufacturer: Linear Technology
• Type: Hot-Swap Controllerr

Specifications of LTC1643AL-1IGN#TR

• Applications: CompactPCI™
• Internal Switch(s): No
• Voltage - Supply: 3.3V, 5V, ±12V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SSOP (0.150", 3.90mm Width)
• Family Name: LTC1643AL-1
• Package Type: SSOP N
• Operating Supply Voltage (min): 2.75/10.8/-10.8V
• Operating Supply Voltage (max): 12/13.2/-13.2V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Product Depth (mm): 3.99mm
• Product Height (mm): 1.5mm
• Mounting: Surface Mount
• Pin Count: 16
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

LTC1643AL
LTC1643AL-1/LTC1643AH
TYPICAL PERFORMANCE CHARACTERISTICS
PIN
12V
internal circuitry. A 0.5Ω switch is connected between
12V
voltage lockout circuit prevents the switches from turning
on while the 12V
V
connected between V
current limit.
3V
output supply voltage. The PWRGD signal cannot go low
until the 3V
6
2.454
2.452
2.450
2.448
2.446
2.444
2.442
EEIN
600
500
400
300
200
100
OUT
U
IN
IN
0
–50
–50
3V
vs Temperature
V
vs Temperature
and 12V
(Pin 2): – 12V Supply Input. A 1.2Ω switch is
(Pin 1): 12V Supply Input. It powers all the chip’s
FUNCTIONS
(Pin 3): Analog Input. Used to monitor the 3.3V
EE
IN
–25
Current Foldback
–25
Undervoltage Lockout
U
OUT
0
TEMPERATURE (°C)
OUT
TEMPERATURE (°C)
0
pin exceeds 2.9V typically.
IN
25
with a foldback current limit. An under-
V
V
pin voltage is less than 9.5V typically.
EEOUT
EEOUT
25
U
50
EEIN
= –12V
= 0V
50
75
and V
W
100
75
1643A G21
1643A G25
U
EEOUT
125
100
with a foldback
1200
1000
800
600
400
200
70
60
50
40
30
20
10
0
0
–50
–50
12V Current Foldback
vs Temperature
5V
Voltage vs Temperature
IN
–25
–25
Foldback Current Limit
12V
12V
OUT
0
OUT
TEMPERATURE (°C)
TEMPERATURE (°C)
0
= 12V
= 0V
25
5V
5V
25
OUT
OUT
TIMER (Pin 4): Analog Current Fault Inhibit Timing Input.
Connect a capacitor from TIMER to GND. With the chip
turned off (ON = GND or ON = High) or the internal circuit
breaker tripped (FAULT = GND), the TIMER pin is internally
held at GND. When the chip is turned on, a 22µA pull-up
current source is connected to TIMER. Current limit faults
will be ignored until the voltage at the TIMER pin rises to
within 0.9V of 12V
ON/ON (Pin 5): Digital Input.The LTC1643AL/LTC1643AL-1
have an active low enable, ON, and the LTC1643AH has an
active high enable, ON. When the ON pin is pulled high or
50
= 5V
= 0V
50
75
75
100
1643A G23
1643A G26
125
100
IN
.
800
700
600
500
400
300
200
100
70
60
50
40
30
20
10
0
–50
0
V
0
3V
Voltage vs Temperature
OL
IN
–25
vs I
Foldback Current Limit
2
SINK
0
TEMPERATURE (°C)
3V
3V
OUT
(25°C)
OUT
25
4
I
SINK
= 3.3V
= 0V
PWRGD
(mA)
50
6
FAULT
75
8
100
1643A G24
1643A G27
1643afb
125
10