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參數(shù)資料
| 型號： | MAX5918-MAX5919 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Low-Voltage, Dual Hot-Swap Controllers with Independent ON/OFF Control |
| 中文描述： | 低電壓，雙熱插拔控制器具有獨(dú)立的開/關(guān)控制 |
| 文件頁數(shù)： | 3/15頁 |
| 文件大?。?/td> | 443K |
| 代理商： | MAX5918-MAX5919 |
M
Low-Voltage, Dual Hot-Swap Controllers with
Independent ON/OFF Control
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN_
= +1V to +13.2V provided at least one supply is higher than +2.7V, V
ON1
= V
ON2
= +2.7V, T
A
= -40
°
C to +85
°
C, unless other-
wise noted. Typical values are at V
IN1
= +5V, V
IN2
= +3.3V, and T
A
= +25
°
C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
0.03
100
0.03
MAX
UNITS
V
ON_
< 4.5V
V
ON_
> 4.5V
V
ON_
= 4.5V
ON Input Bias Current
I
BON
V
IN1
= V
IN2
= +13.2V
1
μA
ON Pulse Width Low
DIGITAL OUTPUT (PGOOD_)
Output Leakage Current
Output Voltage Low
PGOOD_ Delay
OUTPUT VOLTAGE MONITORS (MON1, MON2)
t
UNLATCH
To unlatch after a latched fault
100
μs
V
PGOOD
_ = 13.2V
I
SINK
= 1mA
After t
START
, MON_ = V
IN_
1
μA
V
ms
V
OL
t
PGDLY
0.4
0.75
Overvoltage
Undervoltage
657
513
687
543
20
0.03
707
563
MON_ Trip Threshold
V
MON
mV
MON_ Glitch Filter
MON_ Input Bias Current
UNDERVOLTAGE LOCKOUT (UVLO)
μs
μA
V
MON_
= 600mV
Startup is initiated when this threshold is
reached by V
IN1
or V
IN2
, V
ON
_ > 0.875V
Hysteresis
2.10
2.4
2.67
V
UVLO Threshold
V
UVLO
100
mV
UVLO Glitch Filter Reset Time
V
IN_
toggled below UVLO to unlatch after a
fault
100
μs
UVLO to Startup Delay
SHUTDOWN LATCH/RESTART
Autoretry Delay
t
D,UVLO
V
IN_
step from 0 to 2.8V
20
37.5
60
ms
t
RETRY
Delay time to restart after fault shutdown
64 x t
START
ms
Note 1:
All devices are 100% tested at T
A
= +25
°
C and T
A
= +85
°
C. Limits at T
A
= -40
°
C are guaranteed by design.
Note 2:
The MAX5918/MAX5919 slow-comparator threshold is adjustable. V
SC,TH
= R
LIM
0.25μA + 25mV (see the
Typical
Operating Characteristics
).
Note 3:
The current-limit slow-comparator response time is weighted against the amount of overcurrent, the higher the overcurrent
condition, the faster the response time (see the
Typical Operating Characteristics)
.
Note 4:
The startup period (t
START
) is the time during which the slow comparator is ignored and the device acts as a current-limiter
by regulating the sense current with the fast comparator (see the
Startup Period
section).
Note 5:
The current available at GATE is a function of V
GATE
(see the
Typical Operating Characteristics
).
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