MAX5971B Maxim Integrated Products, MAX5971B Datasheet - Page 44

• Manufacturer Part Number: MAX5971B
• Description: PSE Controller
• Manufacturer: Maxim Integrated Products

Figure 16. Typical Operating Circuit 2 (AC Load Removal Detection, Internal PWM Enabled for LED Indication, and Class 5
Detection Enabled)
Single-Port, 40W, IEEE 802.3af/at,
PSE Controller with I
Figure 17. Typical Operating Circuit 3 (IEEE 802.3at Compliant, Minimal Application Circuit with DC Load Removal Detection and
No LED Indication)
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-54V
100V
47µF
-54V
0.1µF
100V
100V
47µF
1N4448
0.1µF
1nF
100V
0.1µF
5.1kI
LED
1nF
10mH
V
V
EN
LED
PWMEN
LEGACY
MIDSPAN
OSC
EE
EE_DIG
SDA
SERIAL INTERFACE
LED
EN
V
V
LEGACY
MIDSPAN
OSC
2
EE
EE_DIG
SDA
SCL
MAX5971B
C
AGND
SERIAL INTERFACE
SCL
MAX5971B
SMJ58A
AD0
AGND
SMJ58A
AD0
OUTP
ILIM1
ILIM2
INT
OUT
DET
PWMEN
0.1µF
OUTP
ILIM1
ILIM2
INT
100V
OUT
DET
0.1µF
100V
1N4448
2.2MI
1N4448
1kI
1kI
1kI
PSE OUTPUT
2.2MI
0.47µF
100V
PSE OUTPUT
-54V