MAX5943EEEE+T Maxim Integrated Products, MAX5943EEEE+T Datasheet - Page 4

• Manufacturer Part Number: MAX5943EEEE+T
• Description: IC FIREWIRE CURR LIMITER 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5943EEEE+T

• Applications: FireWire® Apps
• Fet Type: N-Channel
• Number Of Outputs: 2
• Internal Switch(s): No
• Delay Time - Off: 100ns
• Voltage - Supply: 7.5 V ~ 37 V
• Current - Supply: 1.3mA
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Delay Time - On: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

FireWire Current Limiter and Low-Drop
ORing Switch Controller
ELECTRICAL CHARACTERISTICS (continued)
(V
(Note 1)
Note 1: All min/max parameters are tested at +25°C and +85°C. Limits at -40°C are guaranteed by design.
Note 2: Measured at both V
Note 3: The typical value of parameter V
Note 4: Current-Limit/Circuit-Breaker Timeout; IN or ON low.
Note 5: See the Typical Operating Circuit . Measured at V
Note 6: The tristate (“floating”) logic condition will be entered if the pin current is within these limits.
Note 7: R
Note 8: Parameter t
Note 9: If the ON voltage goes below V
4
Circuit-Breaker Timeout
(MAX5943B–MAX5943E) (Note 7)
Automatic Restart Delay After
Current-Limit/Circuit-Breaker
Timeout
GATE1 Turn-Off Time
(ORing Response Time)
Turn-Off Response Time
Minimum Delay from ON Low to
Low-Current Shutdown Mode
IN
_______________________________________________________________________________________
= 7.5V to 37V, GND = 0V, and T
rent-limit mode. Therefore, the relationship between resistor value and timeout changes for large values of R
Current-Limit Timeout vs. R
quickly (within t
TIM
PARAMETER
is connected from TIM to GND. The maximum timeout period is enforced to prevent arbitrarily long operation in cur-
OFF
ON_OFF
is a direct multiple of t
GATE2
).
= V
TIM
SYMBOL
t
OUT
ON_OFF
A
in the Typical Operating Characteristics for nominal values.
ON_REF
t
t
t
OFF
t
= -40°C to +85°C, unless otherwise noted. Typical values are at V
THF
CB
OR
SD
= 0V and V
is 1.5 x V
ILIM
- Hysteresis, then GATE2 goes low immediately to disconnect power from the load
Circuit-breaker mode,
MAX5943B
Circuit-breaker mode,
MAX5943C
Circuit-breaker mode,
MAX5943D
Circuit-breaker mode,
MAX5943E
LATCH = GND (Note 8)
From V
C
Time from V
until (V
(Note 9)
ON step from 1.3V to 0.4V
(or t
GATE1
GATE2
TH
CB
GATE2
.
OR
), so the limits for t
GATE1
= 10nF
trigger until (V
= V
ON
- V
OUT
= V
CONDITIONS
< (V
OUT
SENSE
= V
ON_OFF
) < 1V, GATE2 = open
IN
.
GATE1
TIM = IN or
TIM ≥ 3.4V
R
R
TIM = floating
TIM = IN or
TIM ≥ 3.4V
R
R
TIM = floating
TIM = IN
R
R
TIM = floating
TIM = IN or
TIM ≥ 3.4V
R
R
TIM = floating
.
TIM
TIM
TIM
TIM
TIM
TIM
TIM
TIM
OFF
- Hysteresis)
= 4kΩ
= 50kΩ
= 4kΩ
= 50kΩ
= 4kΩ
= 50kΩ
= 4kΩ
= 50kΩ
track the limits for t
- V
IN
) < 1V,
0.45
3.75
0.89
1.78
1.15
3.56
MIN
228
575
109
217
7.5
2.3
27
54
15
30
ILIM
(or t
OR
128 x
(t
TYP
0.51
32.5
1.00
2.02
1.38
4.05
2.76
0.34
10.9
21.9
CB
345
690
130
260
100
5.5
65
44
ILIM
50
t
IN
CB)
).
= 12V, T
MAX
0.57
1.13
2.26
1.61
4.52
3.23
TIM
403
806
151
303
0.6
38
76
14
28
56
7
. See
A
= +25°C.)
UNITS
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
ms
µs
µs
µs
µs
µs
µs
ns
µs
µs