Rainbow Electronics MAX5969B - Manual (Page 8)

IEEE 802.3af/at-Compliant, Powered Device Interface
Controllers with Integrated Power MOSFET
MAX5969A/MAX5969B
8 ______________________________________________________________________________________
Simplified Block Diagram
1.5mA
46µA
V DD
EN CLS 1.23V
PSE 2
2EC
V DD
5V
11.6V/10.8V
11.6V/4V
D Q
Q
SET
CLR
DET
V SS
5V REGULATOR
5V
1.23V
22.8/22
THERMAL
SHUTDOWN
Q
R
S
V DD
V DD
V DD
WAD
WAPD
RTN
V ON /V OFF
V DD
D Q
Q
SET
CLR
9V
230µA
PG
CLASSIFICATION
I SWITCH
K x I SWITCH
ISOLATION
SWITCH
S
MUX
I0 135mA
V ON /V OFF = 38.6V/31V FOR MAX5969B
V ON /V OFF = 35.4V/31V FOR MAX5969A
760mA I1
1/K
MAX5969A
MAX5969B
95ms
HSON
4V
15V
I REF