MAX5913AEMHT Просмотр технического описания (PDF) - Maxim Integrated
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MAX5913AEMHT Datasheet PDF : 20 Pages
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+48V Quad Hot-Swap Controllers For
Power-Over-LAN
ELECTRICAL CHARACTERISTICS (continued)
(VCC = VCSP_ = +48V, VAGND = VDGND = 0V, VDD = +3.3V, VRLY = +12V, TA = -40°C to +85°C, unless otherwise noted. Typical val-
ues are at VCC = VCSP_ = +48V and TA = +25°C.)
PARAMETER
Gate Discharge Current
Source-Gate Clamp Voltage
OPEN-CIRCUIT DETECTOR
SYMBOL
CONDITIONS
During current regulation
IGATE,DIS VON = 0V
(VCSP_ - VDRAIN_) > VFC
VSGZ
VOUT_ = 0V, force 30mA into GATE_,
measure VGATE - VOUT
MIN
TYP MAX UNITS
8
µA
1
mA
15
mA
14
16.5
18
V
Open-Circuit Current-Threshold
Voltage
VOC
Minimum ∆V across RSENSE to detect an
open circuit
1.5
3
4.5
mV
Delay to Open-Circuit Detect
tOC (Figure 2)
Deglitch Delay
RELAY DRIVERS
tLPFD (VCSP_ - VDRAIN__) < VOC (Figure 2)
Maximum Low Voltage (MAX5913A) VRLOW RLYON = high, IRLYD_ = 100mA
Relay Pullup Current (MAX5914A) IRPLUP RLYON = high, VRLYD_ = 0V
Clamp Diode Voltage
VRCLAMP
Force 100mA into RLYD, measure VRLYD -
VRLY
Relay Output Leakage
RLYON_ = low, VRLYD_ = VRLY
TIMING
Short-Circuit and Startup Timer
(Note 2)
RRTIM = 2kΩ
tO
On time for continuous
overcurrent conditions
RRTIM = 40kΩ
RRTIM = ∞
DC = logic low
Auto-Retry Duty Cycle
DC = logic high
DC = unconnected
Port Turn-On Delay
tON_DEL VON = 3.3V (Figure 3)
Relay Turn-Off Delay
tOFF_DEL After RLYON_ goes low (Figure 3)
DIGITAL INTERFACE
DC Pin Input-Voltage High
VIH_DC 2.5V ≤ VDD ≤ 3.7V
DC Pin Input-Voltage Low
VIL_DC 2.5V ≤ VDD ≤ 3.7V
DC Pin Input Impedance
Logic Input High
RIN_DC
VIH 2.5V ≤ VDD ≤ 3.7V
Logic Input Low
VIL 2.5V ≤ VDD ≤ 3.7V
Logic Input Leakage
FAULT Output-Voltage Low
FAULT High Input Leakage
VFL ISINK = 4mA
Logic Output-Voltage High
VOH STAT_ outputs sourcing 0.5mA
Logic Output-Voltage Low
VOL STAT_ outputs sinking 0.5mA
450
900 1350 ms
106
204
302
ms
0.5
V
0.3
0.8
1.3
mA
2
V
1
µA
4.8
6.4
8.0
76
128
180
ms
3.2
6.4
9.6
1
2
%
4
12.8
25.6 38.4
ms
1.6
3.2
4.8
ms
0.7 x VDD
V
0.3 x VDD V
1
kΩ
0.8 x VDD
V
0.3 x VDD V
1
µA
0.4
V
1
µA
VDD - 0.4
mV
0.4
V
Note 1: See Typical Operating Characteristics for Current-Limit Foldback, and refer to Current Sensing and Regulation section.
Note 2: The resistor at RTIM can range from 2kΩ to 40kΩ.
Note 3: Limits are 100% tested at TA = +25°C and TA = +85°C. Limits at -40°C are guaranteed by design and characterization, but
are not production tested.
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