Datasheet

MAX5923
+60V Simple Swapper Hot-Swap Switch
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
All Voltages with Respect to AGND_S, Unless Otherwise Noted
IN ............................................................................-0.3V to +76V
UVLO ........................................................................-0.3V to +6V
VDIG to DGND .........................................................-0.3V to +6V
OUT .......................................................-0.3V to (V
DRAIN
+ 0.3V)
DRAIN..........................................................-0.3V to (V
IN
+ 0.3V)
EN, ZC_EN, ZC, FAULT, POK
and LATCH to DGND ...............................................-0.3V to +6V
DGND ..........................................................................-5V to +5V
Maximum Current into DRAIN...............................................0.8A
Maximum Current into POK, ZC, FAULT (sinking)..............20mA
Continuous Power Dissipation (T
A
= +70°C)
20-Pin TSSOP (derate 11.1mW/°C above +70°C) .......879mW
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
ELECTRICAL CHARACTERISTICS
(V
IN
= 48V, VDIG = 3.3V, AGND_S = AGND = DGND = 0V, R
SENSE
= 0.5Ω ±1%, UVLO = open, EN = VDIG, T
A
= -40°C to +85°C, unless
otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Analog Input Voltage Range V
IN
16 60 V
Analog Input Supply Current I
IN
V
IN
= 72V, measured at AGND after OUT
has stopped slewing
1 1.6 mA
Digital Input Voltage Range V
DIG
1.65 5.5 V
Digital Input Supply Current I
DIG
V
DIG
= 5V 0.05 0.1 mA
DGND-to-AGND Operating
Voltage Range
-4 +4 V
Current-Limit Response Time OUT shorted to AGND (Note 1) 1 µs
OUT Current-Limit Foldback
Voltage
V
FBSTOP
(Note 2) 18 V
Maximum voltage across R
SENSE
at V
OUT
>
V
FBSTOP
198 212 225
Current-Limit Sense Voltage
(V
IN
- V
DRS
) (Note 3)
V
ILIM
0°C to +85°C 203 212 221
mV
V
OUT
= 0V 64 70 76
Current-Limit Sense Foldback
Voltage (V
IN
- V
DRS
)
V
ILIM_fb
0°C to +85°C 506075
mV
Overcurrent Timeout t
OC
OUT shorted to AGND (Note 4) 50 60 70 ms
T
A
= +25°C 0.45
D
MOS
On-Resistance R
DSON
I
OUT
= 100mA
T
A
= +85°C 0.75
Ω
Power-Off OUT Sink Current EN = DGND, V
OUT
= 48V 15 µA
Maximum Output Voltage Slew
Rate
dV
OUT
/dt, V
OUT
rising, no load 100 V/ms
Maximum Output Current Slew
Rate
dI
OUT
/dt, V
OUT
rising, C
LOAD
= 100µF 35 A/ms
V
OUT
rising, POK from low to high 650 750 850 mV
Power-OK Threshold (V
IN
- V
OUT
)V
THPOK
Hysteresis 10 %
POK Output Low Voltage V
POK_LOW
I
POK
= 3mA 0.4 V
POK Output Leakage Current V
POK
= 3.3V 0.05 1 µA