Datasheet

MAX5941A/MAX5941B
IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
______________________________________________________________________________________ 15
HIGH-
VOLTAGE
REGULATOR
IN
EN
OUT
BIAS
WINDING
REGULATOR
IN
EN
OUT
SLOPE
COMPENSATION
26mV/µs
275kHz
OSCILLATOR
70ns
BLANKING
R
S
Q
80%/50%
DUTY CYCLE
CLAMP
ILIM
BUF
UVLO
∑
V-
V+
V
DD
OPTO
SS_SHDN
PWM
V
DD-OK
V
CC
NDRV
CS
Vb
4µA
3R
R
5kΩ
2.4V
6.6V
0.7V
125mV
0.4V
26mV/µs
MAX5941A ONLY
Figure 4. MAX5941A/MAX5941B PWM Controller Functional Diagram