MAX5922 Datasheet, PDF (2/21 Pages) Maxim Integrated Products – +48V, Single-Port Network Power Switch For Power-Over-LAN

+48V, Single-Port Network Power Switch
For Power-Over-LAN
ABSOLUTE MAXIMUM RATINGS
(All voltages with respect to AGND_S, unless otherwise noted.)
IN ............................................................................-0.3V to +76V
UVLO ........................................................................-0.3V to +6V
V_DIG to DGND ..........................................................-0.3V to +6V
OUT .......................................................-0.3V to (V_DRAIN + 0.3V)
DRAIN ..........................................................-0.3V to (V_IN + 0.3V)
RDT.........................................................................-0.3V to +12V
RCL to IN ................................................................-10V to +0.3V
EN, DET_DIS, DCA, CLASS, ZC_EN,
and LATCH to DGND ...........................................-0.3V to +6V
POK, ZC, CL0, CL1, CL2, and FAULT to DGND......-0.3V to +6V
DGND ..........................................................................-5V to +5V
Maximum Current into Drain .................................................0.8A
Maximum Current into POK, ZC, CL0, CL1, CL2, FAULT...20mA
Continuous Power Dissipation (T_A = +70°C)
28-Pin TSSOP (Derate 12.8mW/°C above +70°C) .....1026mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V_IN = 48V, V_DIG = 3.3V, AGND_S = AGND = DGND = 0V, R_SENSE = 0.5Ω ±1%, UVLO = open, EN = V_DIG, R_RCL = 150Ω ±1%, R_RDT
= 18.2kΩ ±1%, T_A = -40°C to +85°C, unless otherwise noted. Typical values are at T_A = +25°C.) (Note 1)
PARAMETER
Analog Input Voltage Range
Analog Input Supply Current
Digital Input Voltage Range
Digital Input Supply Current
DGND to AGND Operating
Voltage Range
Current-Limit Response Time
OUT Current-Limit Foldback
Voltage
SYMBOL
V_IN
I_IN
V_DIG
I_DIG
CONDITIONS
V_IN = 60V, measured at AGND after OUT
has stopped slewing
V_DIG = 5V
OUT shorted to AGND (Note 2)
V_FBSTOP (Note 3)
MIN TYP MAX UNITS
32
60
V
1
1.6
mA
1.65
5.50
V
0.05
0.1
mA
-4
+4
V
1
µs
18
V
Current-Limit Sense Voltage
(V_IN - V_DRS) (Note 4)
V_ILIM
Maximum voltage across R_SENSE at V_OUT >
V_FBSTOP
198
212
223
mV
0°C to +70°C
203
212
221
Current-Limit Sense Foldback
Voltage (V_IN - V_DRS)
Overcurrent Timeout
D_MOS On-Resistance
Power-Off OUT Sink Current
Maximum Output Voltage Slew
Rate
V_{ILIM_fb} V_OUT = 0V
t_OC
R_DSON
OUT shorted to AGND (Note 5)
I_OUT = 100mA
T_A = +25°C
T_A = +85°C
EN = DGND, V_OUT = 48V
dV_OUT/dt V_OUT rising, no load
64
70
76
mV
50
60
75
ms
0.45
Ω
0.75
15
µA
100
V/ms
Maximum Output Current Slew
Rate
Power-OK Threshold (V_IN - V_OUT)
POK Output Low Voltage
POK Output Leakage Current
dI_OUT/dt V_OUT rising, C_LOAD = 100µF
V_THPOK
V_OUT rising, POK from low to high
Hysteresis
V_{POK_LOW} I_POK = 3mA
V_POK = 3.3V
35
A/ms
650
750
850
mV
10
%
0.4
V
0.05
1
µA
2 _______________________________________________________________________________________