MAX5944ESE-T Maxim Integrated Products, MAX5944ESE-T Datasheet - Page 4

• Manufacturer Part Number: MAX5944ESE-T
• Description: MOSFET & Power Driver ICs
• Manufacturer: Maxim Integrated Products

Specifications of MAX5944ESE-T

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Dual FireWire Current Limiter and Low-Drop
ORing Switch Controller
ELECTRICAL CHARACTERISTICS (continued)
(V
(Note 1)
(V
4
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 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: If the ON_ voltages go below V
TIMING
Current-Limit Timeout
Automatic Restart Delay After
Current-Limit Timeout (Note 7)
GATE1_ Turn-Off Time
(ORing Response Time)
Turn-Off Response Time
(Note 7)
Minimum Delay from ON_ Low to
Low-Current Shutdown Mode
IN
IN_
_______________________________________________________________________________________
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
= 7.5V to 37V, GND = 0V, and T
= +12V, T
5
quickly (within t
PARAMETER
10
T
A
vs. SUPPLY VOLTAGE
A
SUPPLY CURRENT
T
15
= -40°C
= +25°C, unless otherwise noted.)
SUPPLY VOLTAGE (V)
A
= +85°C
20
ON_OFF
T
25
A
= +25°C
GATE2
30
).
= V
35
SYMBOL
t
A
OUT
ON_OFF
ON_REF
t
t
t
40
= -40°C to +85°C, unless otherwise noted. Typical values are at V
ILIM
t
OFF
OR
THF
SD
= 0V and V
is 1.5 x V
- Hysteresis, then GATE2_ goes low immediately to disconnect power from the load
Current-limit mode
From V
(V
Time from V
until (V
for C
ON_ step from 1.3V to 0.4V
6.0
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
GATE1_
5
GATE2
TH
GATE2_
GATE2_
OR
.
SHUTDOWN SUPPLY CURRENT
10
GATE_
- V
trigger until
vs. SUPPLY VOLTAGE
= V
ON_
IN_
15
= open
SUPPLY VOLTAGE (V)
- V
= V
OUT
CONDITIONS
) < 1V, C
< (V
OUT_
20
SENSE_
= V
ON_OFF
Typical Operating Characteristics
25
) < 1V,
IN
GATE1_
.
.
30
- Hysteresis)
35
= 10nF
40
52.0
51.5
51.0
50.5
50.0
49.5
49.0
48.5
48.0
47.5
47.0
46.5
46.0
1.78
THRESHOLD VOLTAGE vs. TEMPERATURE
-40
MIN
240
CURRENT-LIMIT/CIRCUIT-BREAKER
-15
TYP
2.02
0.34
259
100
50
TEMPERATURE (°C)
IN_
V
V
IN
IN
10
= 32V
= 12V, T
= 12V
MAX
2.26
278
0.6
35
V
IN
= 7.5V
A
= +25°C.)
60
UNITS
ms
ms
ns
µs
µs
85