MAX5969BETB+T Maxim Integrated Products, MAX5969BETB+T Datasheet - Page 12

• Manufacturer Part Number: MAX5969BETB+T
• Description: IC PWR OVER ETHERNET SW 10TDFN
• Manufacturer: Maxim Integrated Products
• Type: Power over Ethernet Switch (PoE)r

Specifications of MAX5969BETB+T

• Applications: Remote Peripherals (Industrial Controls, Cameras, Data Access)
• Internal Switch(s): Yes
• Current Limit: Adjustable
• Voltage - Supply: 60V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-WFDFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: MAX5969BETB+TTR

IEEE 802.3af/at-Compliant, Powered Device Interface
Controllers with
Figure 2. Typical Configuration When Using a 12V Wall Power Adapter
Careful PCB layout is critical to achieve high efficiency
and low EMI. Follow these layout guidelines for optimum
performance:
1) Place the input capacitor, classification resistor, and
12
transient voltage suppressor as close as possible to
the MAX5969A/MAX5969B.
-54V
_____________________________________________________________________________________
RECTIFIER
BRIDGE
RJ-45
AND
SMAJ58A
GND
Applications Information
Operation with 12V Adapter
24.9kI
68nF
R
R
CLS
DET
DET
CLS
V
SS
V
DD
Integrated Power MOSFET
Layout Procedure
MAX5969A
MAX5969B
2EC
PG
WAD
RTN
BATTERY
2) Use large SMT component pads for power dissipat-
3) Use short and wide traces for high-power paths.
4) Use the MAX5969 Evaluation Kit layout as a refer-
12V
CLASSIFICATION
(ASSERTED ON)
ing devices such as the MAX5969A/MAX5969B and
the external diodes.
ence.
2-EVENT
PROPER 2EC LOGIC WHEN
THIS CIRCUIT ACHIEVES
BATTERY IS < 12.5V
ENABLE
CONVERTER
DC-DC
IN+
IN-
GND