MAX5913 datasheet(2/20 Pages) MAXIM

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+48V Quad Hot-Swap Controllers For

Power-Over-LAN

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC = VCSP_ = +48V, AGND = DGND = 0, VDD = +3.3V, VRLY = +12V, TA = -40°C to +85°C, unless otherwise noted. Typical values

are at VCC = VCSP_ = +48V and TA = +25°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.

VCC to AGND or DGND..........................................-0.6V to +76V

DRAIN_, OUT_ to AGND or DGND................-0.6V to VCC +0.3V

CSP_ to VCC ..........................................................-0.3V to +0.3V

GATE_ to OUT_ .....................................................-0.3V to +13V

VRLY to DGND ........................................................-0.3V to +18V

RLYD_ to DGND........................................-0.3V to (VRLY + 0.3V)

ON_, RLYON_, OCEN, RTRYEN, STATOUT,

DC to DGND........................................................-0.3V to +12V

FAULT to DGND .....................................................-0.3V to +12V

STAT_, RTIM to DGND ...............................-0.3V to (VDD + 0.3V)

VDD to DGND ...........................................................-0.3V to +7V

DGND to AGND...........................................................-5V to +5V

Current into RLYD_ .........................................-50mA to +150mA

Current into Any Other Pin................................................±50mA

Continuous Power Dissipation (TA = +70°C)

44-Pin MQFP (derate 12.7mW/°C above +70°C)......... 1.013W

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) ................................ +300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

POWER SUPPLIES

Analog Supply Voltage

VCC

Measured with respect to AGND

0°C to +85°C

2.7

Analog Supply Current

VCC = VCSP_ = 72V

IS = ICC + ICSP

-40°C to 0°C5

Digital Supply Voltage

VDD

Measured with respect to DGND

1.8

3.3

3.7

Digital Supply Current

IDD

All logic outputs high, RTIM floating

1.1

Analog Supply Undervoltage

Lockout

VUVLO

VCC rising, circuits enabled

UVLO Hysteresis

VUVLO,H

UVLO Deglitch Delay

tD,UVLO

VON = 3.3V, VRLYON = 3.3V (Figure 1)

12.8

25.6

38.4

Relay Driver Supply

VRLY

Measured with respect to DGND

Ground Potential Difference

VGG

Voltage difference between DGND and AGND

-4

FEEDBACK INPUT AND CURRENT SENSE

OUT Sense Bias Current

IFP

VOUT_ = VCC

2µA

Initial Feedback Voltage

VFB_S

Voltage under which the foldback circuit starts

reducing the current-limit value

(Note 1)

Current-Limit Threshold Voltage

VSC

Maximum

∆V across RSENSE at VOUT > VFB_S

125

142.5

160

Foldback Voltage

VFLBK

Maximum

∆V across RSENSE at VOUT = 0

Fast Discharge Threshold

VFC

360

420

480

Switch-On Threshold

VSWON

Maximum VCC - VOUT at which the switch is

defined as fully on, VOUT increasing

1.2

1.5

1.8

Switch-On Comparator Hysteresis

VSWON_H

160

MOSFET DRIVERS

VGATE - VCC when switch is fully on

°C to +85°C

Gate Overdrive Voltage

VGS

-40

°C to 0°C7

Gate Charge Current

IGATE

VGATE = 0

µA

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