MAX5941A Datasheet, PDF (12/24 Pages) Maxim Integrated Products – IEEE 802.3af-Compliant Power-Over-Ethernet Interface/PWM Controller for Power Devices

IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
Table 2. Setting Classification Current
CLASS
R_CL (Ω)
V_IN* (V)
CLASS CURRENT SEEN AT V_IN (mA)
IEEE 802.3af PD CLASSIFICATION
CURRENT SPECIFICATION (mA)
MIN
MAX
MIN
MAX
0
10k
12.6 to 20
0
4
0
4
1
732
12.6 to 20
9
12
9
12
2
392
12.6 to 20
17
20
17
20
3
255
12.6 to 20
26
30
26
30
4
178
12.6 to 20
36
42
36
44
*V_IN is measured across the MAX5941 input pins (V_EE and GND), which does not include the diode bridge voltage drop.
GND
UVLO
UVLO
GND
2.4V,
REF ^REF
R1
21.8V
R2
39V
2.4V, 0.8
HYST
R3
V_GATE, 6V
EN
200mV
GATE
V_EE
Figure 2. Powered Device Interface Block Diagram
EN
6.8V
CLASSIFICATION
RCL
MAX5941B
PGOOD
Q4
1.2V, REF
5V, REF
PGOOD
Q3
OUT
Q2
Q1
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