MAX5942A Maxim, MAX5942A Datasheet - Page 12

• Manufacturer Part Number: MAX5942A
• Description: IEEE 802.3af Power-Over-Ethernet Interface/PWM Controller for Power Devices
• Manufacturer: Maxim

IEEE 802.3af Power-Over-Ethernet
Interface/PWM Controller for Power Devices
Table 2. Setting Classification Current
*V
Figure 2. Powered Device Interface Block Diagram
12
IN
CLASS
is measured across the MAX5942 input pins (V
______________________________________________________________________________________
UVLO
0
1
2
3
4
GATE
GND
R
CL
10k
732
392
255
178
UVLO
(Ω)
R1
R2
R3
GND
200mV
21.8V
39V
12.6 to 20
12.6 to 20
12.6 to 20
12.6 to 20
12.6 to 20
V
IN
* (V)
REF
2.4V, 0.8
2.4V,
HYST
REF
V
CLASS CURRENT SEEN AT V
V
EE
GATE
, 6V
MIN
EE
17
26
36
0
9
EN
and GND), which does not include the diode bridge voltage drop.
Q2
MAX5942B
MAX
12
20
30
42
4
IN
(mA)
EN
1.2V, REF
5V, REF
CLASSIFICATION
IEEE 802.3af PD CLASSIFICATION
CURRENT SPECIFICATION (mA)
MIN
17
26
36
0
9
Q1
6.8V
Q4
Q3
MAX
12
20
30
44
4
V
RCL
PGOOD
PGOOD
OUT