MAX5922CEUI datasheet(2/21 Pages) MAXIM

2 / 21 page

+48V, Single-Port Network Power Switch

For Power-Over-LAN

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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 (VDRAIN + 0.3V)

DRAIN ..........................................................-0.3V to (VIN + 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 (TA = +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

ELECTRICAL CHARACTERISTICS

(VIN = 48V, VDIG = 3.3V, AGND_S = AGND = DGND = 0V, RSENSE = 0.5

Ω ±1%, UVLO = open, EN = VDIG, RRCL = 150Ω ±1%, RRDT

= 18.2k

Ω ±1%, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Analog Input Voltage Range

VIN

Analog Input Supply Current

IIN

VIN = 60V, measured at AGND after OUT

has stopped slewing

11.6

Digital Input Voltage Range

VDIG

1.65

5.50

Digital Input Supply Current

IDIG

VDIG = 5V

0.05

0.1

DGND to AGND Operating

Voltage Range

-4

Current-Limit Response Time

OUT shorted to AGND (Note 2)

µs

OUT Current-Limit Foldback

Voltage

VFBSTOP

(Note 3)

Maximum voltage across RSENSE at VOUT >

VFBSTOP

198

212

223

Current-Limit Sense Voltage

(VIN - VDRS) (Note 4)

VILIM

0°C to +70°C

203

212

221

Current-Limit Sense Foldback

Voltage (VIN - VDRS)

VILIM_fb

VOUT = 0V

Overcurrent Timeout

tOC

OUT shorted to AGND (Note 5)

TA = +25°C0.45

DMOS On-Resistance

RDSON

IOUT = 100mA

TA = +85°C0.75

Ω

Power-Off OUT Sink Current

EN = DGND, VOUT = 48V

µA

Maximum Output Voltage Slew

Rate

dVOUT/dt

VOUT rising, no load

100

V/ms

Maximum Output Current Slew

Rate

dIOUT/dt

VOUT rising, CLOAD = 100µF

A/ms

VOUT rising, POK from low to high

650

750

850

Power-OK Threshold (VIN - VOUT)VTHPOK

Hysteresis

POK Output Low Voltage

VPOK_LOW IPOK = 3mA

0.4

POK Output Leakage Current

VPOK = 3.3V

0.05

µA

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