MAX5941A/MAX5941B
IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
22 ______________________________________________________________________________________
*OPTIONAL.
** R1 AND R2 ARE OPTIONAL AND WHEN USED,
THEY MUST TOTAL TO 25.5k AND REPLACE
THE 25.5k RESISTOR.
NDRVV+
V+
V
DD
CS
GND
SS_SHDN
V
CC
OPTOCOUPLER
TL431
OPTO
VREG2
MAX5014
POWER-SUPPLY CIRCUIT 1
POWER-SUPPLY CIRCUIT 2
NDRVGNDV+
V
DD
68nF
60V
GND
-48V
R
DISC
25.5k
RCL
RCL
UVLO
GATE
V
EE
C
GATE
*
R1**
R2**
CS
V-
SS_SHDN
PGOOD
V
CC
OPTO
OPTOCOUPLER
TL431
OUT
VREG1
MAX5941_
PGOOD
Figure 8. Power-Supply Circuit 1 Enabling PWM Controller of a Second Power Circuit
MAX5941A/MAX5941B
IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
______________________________________________________________________________________ 23
Chip Information
TRANSISTOR COUNT: 4232
PROCESS: BiCMOS
Typical Operating Circuit
NDRVGNDV+
V
DD
V
CC
60V
GND
-48V
RCL
UVLO
GATE
V
EE
C
GATE
CS
V-
SS_SHDN
PGOOD
PGOOD
OPTO
OPTOCOUPLER
TL431
OUT
V
CC
VREG
MAX5941A
MAX5941B
R
DISC
25.5k
MAX5941A/MAX5941B
IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
24 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2006 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages
.)
SOICN .EPS
PACKAGE OUTLINE, .150" SOIC
1
1
21-0041
B
REV.DOCUMENT CONTROL NO.APPROVAL
PROPRIETARY INFORMATION
TITLE:
TOP VIEW
FRONT VIEW
MAX
0.010
0.069
0.019
0.157
0.010
INCHES
0.150
0.007
E
C
DIM
0.014
0.004
B
A1
MIN
0.053A
0.19
3.80 4.00
0.25
MILLIMETERS
0.10
0.35
1.35
MIN
0.49
0.25
MAX
1.75
0.050
0.016L
0.40 1.27
0.3940.386D
D
MINDIM
D
INCHES
MAX
9.80 10.00
MILLIMETERS
MIN
MAX
16
AC
0.337 0.344 AB8.758.55 14
0.189 0.197 AA5.004.80 8
N MS012
N
SIDE VIEW
H 0.2440.228 5.80 6.20
e 0.050 BSC 1.27 BSC
C
HE
e
B
A1
A
D
0-8
L
1
VARIATIONS:

MAX5941ACSE+

Mfr. #:
Manufacturer:
Maxim Integrated
Description:
Power Switch ICs - POE / LAN IEEE 802.3af POE Int/PWM Controller
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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