MAX5942A Maxim, MAX5942A Datasheet - Page 15

• Manufacturer Part Number: MAX5942A
• Description: IEEE 802.3af Power-Over-Ethernet Interface/PWM Controller for Power Devices
• Manufacturer: Maxim

Figure 4. MAX5942A/MAX5942B PWM Controller Functional Diagram
V
V+
V-
FB
SS_SHDN
DD
Interface/PWM Controller for Power Devices
0.25V
50kΩ
______________________________________________________________________________________
26mV/µs
MAX5942A ONLY
IN
EN
ERROR
AMP
1MΩ
2.4V
REGULATOR
VOLTAGE
HIGH-
COMPENSATION
26mV/µs
SLOPE
IEEE 802.3af Power-Over-Ethernet
OUT
∑
EN
PWM
DUTY CYCLE
80%/50%
CLAMP
REGULATOR
WINDING
BIAS
OSCILLATOR
275kHz
4µA
OUT
BUF
IN
V
CC
6.6V
3R
0.7V
BLANKING
UVLO
70ns
ILIM
S
R
R
V
DD
-
125mV
OK
Q
5kΩ
V
CC
NDRV
V
CS
CC
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