Datasheet

MAX5904–MAX5909
Low-Voltage, Dual Hot-Swap Controllers/Power
Sequencers
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS
(V
IN
_ = +1V to +13.2V provided at least one supply is higher than +2.7V, V
ON
= +2.7V, T
A
= -40°C to +85°C, unless otherwise noted.
Typical values are at V
IN1
= +5V, V
IN2
= +3.3V, and T
A
= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
POWER SUPPLIES
IN_ Input Voltage Range (Note 2)
V
IN
_Other V
IN
= +2.7V 1.0
13.2
V
Supply Current I
IN
I
IN1
+ I
IN2
1.2 2.9 mA
CURRENT CONTROL
T
A
= +25°C
22.5
25
27.5
MAX5904/MAX5905
T
A
= -40°C to +85°C 20.5 27.5
LIM = GND
22.5
25
27.5
Slow-Comparator Threshold
(V
IN
- V
SENSE
) (Note 3)
V
SC
,
TH
MAX5906–MAX5909
R
LIM
= 300kΩ 80
100 125
mV
1mV overdrive 3 ms
Slow-Comparator Response Time
(Note 4)
t
SCD
50mV overdrive 110 µs
V
SU
,
TH
V
IN
_ - V
SENSE
_; during startup 2 x V
SC, TH
Fast-Comparator Threshold
V
FC
,
TH
V
IN
_ - V
SENSE
_; normal operation 4 x V
SC, TH
mV
Fast-Comparator Response Time
t
FCD
10mV overdrive, from overload condition 260 ns
SENSE Input Bias Current
I
B SEN
V
SEN
_ = V
IN
_ 0.03 6 µA
MOSFET DRIVER
R
TIM
= 100kΩ 7.1 10.8
15.5
R
TIM
= 4kΩ (minimum value)
0.31 0.45 0.58
Startup Period
(Note 5)
t
START
TIM floating for MAX5906–MAX5909
fixed for MAX5904/MAX5905
3.9 9
16.0
ms
Charging, V
GATE
= +5V, V
IN
= +10V
(Note 5)
80 100
130
µA
Weak discharge, during startup when current
limit is active or when 0.4V < V
ON
< 0.8V
100 µA
Average Gate Current I
GATE
Strong discharge, triggered by a fault or
when V
ON
< 0.4V
3mA
V
GATE
_ - V
IN
_, I
GATE
_ < 1µA, V
IN
≥ 3V
4.8
5.4 5.8
Gate-Drive Voltage
V
DRIVE
V
GATE
_ - V
IN
_, I
GATE
_ < 1µA, 2.7V ≤ V
IN
≤ 3V 3.6
5.8
V
ON COMPARATOR
Low to high
0.375
0.4
0.425
V
Fast Pulldown ON Threshold
V
ONFP
,
TH
Hysteresis 25 mV
Low to high 0.79
0.825 0.85
V
Channel 1 ON Threshold
V
ON1
,
TH
Hysteresis
25 mV
Low to high
1.93 2.025 2.07
V
Channel 2 ON Threshold
V
ON2
,
TH
Hysteresis
25 mV
ON Propagation Delay
t
ON
10mV overdrive 50 µs