Owner's manual

Typical Operating Circuits (continued)
MAX5965B
-48V
GATE_
INTERNAL PULLDOWN
(MANUAL MODE)
100Ω
-48VRTN
FDT3612
100V, 120mΩ
SOT-223
SENSE_
V
EE
OUT_
OFF
ON
DET_
SDAIN
SDAOUT
SCL
DGND
V
DD
A0
A1
A2
A3
OSC_IN
AUTO
MIDSPAN
AGND
INTERNAL PULLDOWN
(SIGNAL MODE)
0.5Ω
1%
-48V
OUTPUT TO
PORT
-48V RTN
OUTPUT TO PORT
NOTE: ALL SIGNAL PINS ARE REFERENCED TO DGND.
1N4448
1kΩ
1 OF 4 CHANNELS
1.8V TO 3.7V,
(REF TO DGND)
INT
RESET
3kΩ
3kΩ
180Ω
180Ω
180Ω
OPTIONAL BUFFER
INTERNAL
50kΩ PULLUP
4.7kΩ
1kΩ
V
DD
1N4002
CAN BE UP TO 100kΩ
HPCL063L
OPTIONAL BUFFER
OPTIONAL BUFFER
HPCL063L
HPCL063L
VCCRTN
V
CC
(3.3V)
SCL
SDA
SERIAL INTERFACE
3kΩ
3kΩ
ISOLATION
DGND MUST BE CONNECTED DIRECTLY TO AGND
FOR AC DISCONNECT DETECTION CIRCUIT TO OPERATE.
0.47μF
100V
SHD_
SINE WAVE
100Hz ±10%
PEAK AMPLITUDE 2.2V ±0.1V
VALLEY AMPLITUDE 0.2V ±0.1V
Typical Operating Circuit 3 (with AC Load Removal Detection)
Chip Information
PROCESS: BiCMOS
Package Information
For the latest package outline information and land patterns, go
to www.maxim-ic.com/packages.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
36 SSOP A36-4
21-0040
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
52 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
High-Power, Quad, Monolithic, PSE Controllers
for Power over Ethernet
MAX5965A/MAX5965B