Datasheet

IEEE 802.3af/at-Compliant, Powered Device Interface
Controller with Integrated Power MOSFET
MAX5969D
_______________________________________________________________________________________ 7
Pin Description
Pin Configuration
PIN NAME FUNCTION
1, 13–16 N.C. No Connection. Not internally connected. Leave N.C. unconnected.
2 V
DD
Positive Supply Input. Connect a 68nF (min) bypass capacitor between V
DD
and V
SS
.
3 DET Detection Resistor Input. Connect a signature resistor (R
DET
= 24.9kI) from DET to V
DD
.
4 I.C. Internally Connected. Leave unconnected, leave I.C. unconnected.
5, 6 V
SS
Negative Supply Input. V
SS
connects to the source of the integrated isolation n-channel power
MOSFET.
7, 8 RTN
Drain of Isolation MOSFET. RTN connects to the drain of the integrated isolation n-channel power
MOSFET. Connect RTN to the downstream DC-DC converter ground as shown in the Typical
Application Circuit.
TQFN
TOP VIEW
+
3
4
2
1
10
9
11
V
SS
RTN
V
SS
EP*
N.C. N.C. N.C.
56
V
DD
8
16 15 13
DET
I.C.
CLS
2EC
PG
WAD
MAX5969D
RTN N.C.
7
14
N.C.
12
CONNECT TO V
SS
.