MAX5915 データシートの表示（PDF） - Maxim Integrated
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MAX5915 Datasheet PDF : 25 Pages
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Dual PCI 2.2 Hot-Swap Controllers
ELECTRICAL CHARACTERISTICS (continued)
(V-12VIN = -12V, V+12VIN = +12V, V3.3VAUXIN = +3.3V, VON_ = VAUXON_ = +5V, TA = TMIN to TMAX, unless otherwise specified.
Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
On-Resistance of Internal Switch
Foldback Current Limit
Current-Foldback Threshold
RDS(ON), 3.3VAUX
I3.3VAUXIN, LIM
TA = +25°C, ID = 0.4A
TA = +85°C, ID = 0.4A
V3.3VAUXO_ = 0V
Output current rising (Note 2)
Output Undervoltage Threshold V3.3VAUXIN, UV
Auxiliary Input UVLO Delay Time
tDEG, UVLO
3.3VAUXO_ Internal Pulldown
R3.3VAUXO_
ON AND AUXON COMPARATORS
(Note 1)
ON_ = 0V
Threshold Voltage
Hysteresis
Input Bias Current
VHYS
IB, COMP
ON_ and AUXON_ Deglitch
Time
tDEG
Figures 5–8 (Note 3)
FAULT RESPONSE, PGOOD_ STATUS OUTPUT COMPARATORS
MIN
TYP MAX UNITS
0.24
0.4
Ω
0.6
0.5
0.75
1.0
A
1.2
A
2.76
2.89
2.99
V
1.6
ms
1
kΩ
1.0
2.1
V
25
mV
20
µA
4
µs
PGOOD_ Output Overcurrent
and Undervoltage Response
Time
tRESP
tRESP2
Figures 5–8 MAX5915/MAX5916
0.5
1.5
ms
Figures 5–8 MAX5915A/MAX5916A
100
ns
Output Overcurrent and
Undervoltage Deglitch Time
tDELAY
Figures 3–7
16 x
tRESP
ms
PGOOD_ Startup Timeout
tSTART
See Figures 1, 2, 5, 6, 7, and 8
4x
tDELAY
ms
Autorestart Delay
PGOOD_ Output Low Voltage
PGOOD_ Output High Leakage
Current
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Full Thermal Shutdown
Threshold
tRESTART
VOL
ILEAK
TSD
THYS
TSD, FULL
Delay time to restart after OC and/or
UV shutdown
ISINK = 2mA, ON_ = 0V
VPGOOD_ = +5.5V
(Note 4)
(Note 5)
64 x
ms
tSTART
0.5
0.7
V
1
µA
125
°C
5
°C
TSD +
20
°C
Full Thermal Shutdown
Hysteresis
THYS, FULL
5
°C
Note 1: tDEG, UVLO is negative edge triggered. There is no time delay when the inputs rise above the UVLO threshold.
Note 2: The current threshold when the output current starts to fold back. See the Typical Operating Characteristics.
Note 3: tDEG is negative edge triggered. ON_ or AUXON_ transition from low to high has no delay.
Note 4: Temperature threshold at which the outputs of the channel with overcurrent shut down.
Note 5: The temperature threshold at which both channels shut down.
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