MAX5940A(2003) Просмотр технического описания (PDF) - Maxim Integrated

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производитель

MAX5940A
(Rev.:2003)

IEEE 802.3af PD Interface Controller For Power-Over-Ethernet

Maxim Integrated 

IEEE 802.3af PD Interface Controller

For Power-Over-Ethernet

Typical Operating Characteristics (continued)

(VIN = (GND - VEE) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = VEE (MAX5940B), TA = -40°C to +85°C. Typical values

are at TA = +25°C. All voltages are referenced to VEE, unless otherwise noted.)

PGOOD OUTPUT LOW VOLTAGE

vs. CURRENT

400

320

OUT LEAKAGE CURRENT

vs. TEMPERATURE

20

VOUT = 67V

16

INRUSH CURRENT CONTROL (VIN = 12V)

MAX5940A/B toc09

VGATE

5V/div

240

160

80

0

0

12

8

4

5

10

15

20

ISINK (mA)

0

-40

INRUSH CURRENT CONTROL (VIN = 48V)

MAX5940A/B toc10

-15

10

35

60

TEMPERATURE (°C)

VGATE

5V/div

IINRUSH

100mA/div

VOUT TO VEE

10V/div

PGOOD

10V/div

85

1ms/div

INRUSH CURRENT CONTROL (VIN = 67V)

MAX5940A/B toc11

VGATE

5V/div

2ms/div

IINRUSH

100mA/div

VOUT TO VEE

50V/div

PGOOD

50V/div

2ms/div

IINRUSH

100mA/div

VOUT TO VEE

50V/div

PGOOD

50V/div

_______________________________________________________________________________________ 5

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