MAX5913 datasheet(4/20 Pages) MAXIM

4 / 20 page

+48V Quad Hot-Swap Controllers For

Power-Over-LAN

_______________________________________________________________________________________

Typical Operating Characteristics

(VCSP_ = VCC = +48V, VDD = +3.3V, VRLY = +12V, AGND = DGND = 0, RTIM = open, TA = +25°C, unless otherwise specified.)

2.0

2.4

3.2

2.8

3.6

4.0

45 48

39 42

54 57

60 63 66 69 72

SUPPLY CURRENT

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

TA = +85

°C

TA = +25

°C

TA = -40

°C

3.8

3.4

3.0

2.6

2.2

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

-40

-15

SUPPLY CURRENT

vs. TEMPERATURE

TEMPERATURE (

°C)

VCC = +36V

VCC = +48V

VCC = +57V

VCC = +72V

-40

-15

UNDERVOLTAGE LOCKOUT

vs. TEMPERATURE

TEMPERATURE (

°C)

VCC RISING

VCC FALLING

9.50

9.25

9.00

8.75

8.50

33 36 39

54 57 60

42 45 48 51

GATE OVERDRIVE VOLTAGE

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

TA = -40

°C

TA = +85

°C

TA = +25

°C

8.0

8.5

9.0

9.5

GATE OVERDRIVE VOLTAGE

vs. TEMPERATURE

TEMPERATURE (

°C)

-40

-15

VCC = +57V

VCC = +72V

VCC = +48V

VCC = +36V

STARTUP WAVEFORMS

MAX5913/4 toc06

4ms/div

A: VON = VRLYON, 5V/div

B: VRLYD, 20V/div

C: VOUT, 20V/div

D: VGATE, 20V/div

TURN-OFF WAVEFORMS

MAX5913/4 toc07

4ms/div

A: VON = VRLYON, 5V/div

B: VRLYD, 20V/div

C: VOUT, 20V/div

D: VGATE, 20V/div

GATE TURN-OFF WAVEFORM

MAX5913/4 toc08

10ms/div

A: VRLYD, 20V/div

B: VRLYON, 5V/div

C: VON, 5V/div

D: VGATE, 20V/div

UVLO TURN-ON DELAY

MAX5913/4 toc09

4ms/div

RLYON = VDD

A: VON, 5V/div

B: VCC, 10V/div

C: VOUT, 50V/div

D: VGATE, 50V/div

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