Owner manual
MAX5927/MAX5929
Low-Voltage, Quad, Hot-Swap
Controllers/Power Sequencers
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN_
= +1V to +13.2V provided at least one supply is larger than or equal to +2.7V and only one supply is > +11.0V, T
A
= -40°C to
+85°C, unless otherwise noted. Typical values are at V
IN1
= 12.0V, V
IN2
= 5.0V, V
IN3
= 3.3V, V
IN4
= 1.0V, V
ON_
= +3.3V, and
T
A
= +25°C.) (Notes 1, 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Charging, V
GATE_
= GND, V
IN_
= 5V
(Note 6)
80 100 120
Discharging, during startup 100
µA
Discharging, normal turn-off or triggered by
the slow comparator after startup,
V
GATE_
= 5V, V
IN_
= 10V, V
ON_
= 0V
237
Average Gate Current I
GATE
Discharging, triggered by a fault after
startup, V
GATE_
= 5V, V
IN_
= 10V,
(V
IN_
- V
SENSE_
) > V
FC,TH
(Note 7)
30 50 120
mA
Gate-Drive Voltage V
DRIVE
V
GATE_
- V
IN_
, I
GATE_
= 1µA 4.9 5.3 5.6 V
ON COMPARATOR
Low to high 0.85 0.875 0.90 V
ON_ Threshold V
ON_
,
TH
Hysteresis 25 mV
ON_ Propagation Delay 10mV overdrive 10 µs
ON_ Voltage Range V
ON_
Without false output inversion V
IN
V
ON_ Input Bias Current I
BON_
V
ON_
= V
IN
0.03 1 µA
ON_ Pulse Width Low t
UNLATCH
To unlatch after a latched fault 100 µs
DIGITAL OUTPUTS (STAT_)
Output Leakage Current V
STAT_
≤ 13.2V 1 µA
Output Voltage Low V
OL_
POL = floating (MAX5927), I
SINK
= 1mA 0.4 V
UNDERVOLTAGE LOCKOUT (UVLO)
UVLO Threshold V
UVLO
Startup is initiated when this threshold is
reached by any V
IN_
and V
ON_
> 0.9V
(Note 8)
2.25 2.65 V
UVLO Hysteresis V
UVLO
,
HYST
250 mV
UVLO Glitch Filter Reset Time t
D, GF
V
IN
< V
UVLO
maximum pulse width to reset 10 µs
UVLO to Startup Delay t
D,UVLO
Time input voltage must exceed V
UVLO
before startup is initiated
20 37.5 60 ms
Input Power-Ready Threshold V
PWRRDY
Any channel, while V
IN
> V
UVLO
(Note 9) 0.9 0.95 1.0 V
Input Power-Ready Hysteresis V
PWRHYST
50 mV
LOGIC AND TIMING
POL Input Pullup I
POL
POL = GND (MAX5927) 2 4 6 µA
LATCH Input Pullup I
LATCH
LATCH = GND (MAX5927) 2 4 6 µA
MODE Input Voltage V
MODE
MODE floating (default to sequencing
mode)
1.0 1.25 1.5 V
Independent Mode Selection
Threshold
V
INDEP
,
TH
V
MODE
rising 0.4 V
Tracking Mode Selection
Threshold
V
TRACK
,
TH
V
MODE
rising 2.7 V