MAX5941A datasheet(9/24 Pages) MAXIM

Part #	MAX5941A

Description	IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices

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Manufacturer	MAXIM [Maxim Integrated Products]

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IEEE 802.3af-Compliant Power-Over-Ethernet

Interface/PWM Controller for Power Devices

_______________________________________________________________________________________

9

47.0

47.2

47.1

47.4

47.3

47.6

47.5

47.7

47.9

47.8

48.0

010

15

5

2025303540

MAXIMUM DUTY CYCLE vs. VDD

VDD (V)

VOPTO = 4V, CS = V-

DRIVER POWERED

FROM V+

DRIVER POWERED

FROM VDD

9.5

9.6

9.8

9.7

10.0

10.1

9.9

10.2

010

15

5

2025303540

VCC vs. VDD

VDD (V)

DEVICE POWERED FROM VDD

DEVICE POWERED

FROM V+

1.31

1.33

1.32

1.36

1.35

1.34

1.39

1.38

1.37

1.40

040

20

60

80

100

V+ SUPPLY CURRENT

vs. V+ VOLTAGE

V+ VOLTAGE (V)

VOPTO = 4V, CS = VDD = V-

0

6

4

2

8

10

12

040

30

10 20

50 60 70 80 90

110

V+ INPUT CURRENT vs. VOLTAGE

(AFTER STARTUP)

V+ VOLTAGE (V)

100

VOPTO = 4V, CS = V-, VDD = 13V

9.0

9.4

9.2

9.8

9.6

10.2

10.0

10.4

VCC VOLTAGE vs. VCC CURRENT

VCC CURRENT (mA)

0

5

10

15

20

V+ = 67V, OPTO = CS = V-

VDD = 36V

VDD = 13V

9.0

9.3

9.2

9.1

9.4

9.5

9.6

9.7

9.8

9.9

10.0

0

5

10

15

20

VCC VOLTAGE vs. VCC CURRENT

VCC CURRENT (mA)

VDD = OPTO = CS = V-

V+ = 48V

V+ = 67V

V+ = 36V

V+ = 24V

Typical Operating Characteristics (continued)

(VIN = (GND - VEE) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = VEE, VDD = 13V, NDRV floating, TA = TMIN to TMAX.

Typical values are at TA = +25°C. All voltages are referenced to VEE (for graphs 1–11 in the Typical Operating Characteristics), all

voltages are referenced to V- (for graphs 12–30 in the Typical Operating Characteristics), unless otherwise noted.)

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