Simplified block diagram – Rainbow Electronics MAX5969B User Manual
Page 8
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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
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