Datasheet

19Maxim Integrated
MAX5988A/MAX5988B
IEEE 802.3af-Compliant, High-Efficiency, Class 1/Class 2,
Powered Devices with Integrated DC-DC Converter
Functional Diagram
CONTROL
CLK
1.5V
V
REF
DRIVER
FB
PGND
LX
VDRV
AUX
WAD
V
CC
5V
HOT-SWAP
CONTROLLER
PD VOLTAGE
MONITOR
5V
5V
1
0
5V
5V
REGULATOR
OPEN DRAIN RESET
5V
DETECTION
CLASSIFICATION
TVS
GND
V
DD
RREF
VREF
LDO_IN
LDO_OUT
LDO_FB
CLASS2
MPS
LDO
LOGIC
50k
I 50kI
WK
SL
ULP
LED
5VV
DD
BANDGAP
CLASS
MPS
MAX5988A
MAX5988B
V
DD