LTC4269CDKD-1#TRPBF Linear Technology, LTC4269CDKD-1#TRPBF Datasheet - Page 11
![IC PD/OPTO FLYBACK CTRLR 32-DFN](/photos/6/82/68223/32-dfn_05-08-1734_rev_a_sml.jpg)
LTC4269CDKD-1#TRPBF
Manufacturer Part Number
LTC4269CDKD-1#TRPBF
Description
IC PD/OPTO FLYBACK CTRLR 32-DFN
Manufacturer
Linear Technology
Type
Power Over Ethernet (PoE)r
Datasheet
1.LTC4269IDKD-1PBF.pdf
(44 pages)
Specifications of LTC4269CDKD-1#TRPBF
Applications
Power Interface Switch for Power Over Ethernet (PoE) Devices
Voltage - Supply
14 V ~ 16 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
32-DFN
Current - Supply
1.35mA
Interface
IEEE 802.3af
Controller Type
Powered Device Interface Controller (PD)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
BLOCK DIAGRAM
18
15
13
11
23
12
25
28
10
1
2
3
4
5
6
7
8 NC
15.3V
SHDN
R
NC
V
V
NC
V
UVLO
OSC
SYNC
t
PGDLY
ENDLY
NC
NC
T2P
ON
CLASS
PORTN
PORTN
CC
+
–
OSCILLATOR
V
CC
UVLO
REFERENCE
1.237V
(V
I
UVLO
FB
)
20V
+
–
SET
TSD
UVLO
+
–
1.237V
CONTROL
CIRCUITS
REGULATOR
CLASSIFICATION
CURRENT LOAD
INTERNAL
BLOCK
LOGIC
CURRENT TRIP
SLOPE COMPENSATION
–
+
ENABLE
PGATE
SGATE
3V
0.7
1.3
CLAMPS
BOLD LINE INDICATES
HIGH CURRENT PATH
16k
S
R
COMPARATOR
–
+
CURRENT
Q
Q
25k
COLLAPSE DETECT
TO FB
ERROR AMP
14V
–
+
–
+
+
–
1V
GATE DRIVE
GATE DRIVE
+
R
50k
CMPF
3V
OVERCURRENT
FAULT
–
V
V
CC
CC
–
+
–
CURRENT
SENSE AMP
LOAD
COMPENSATION
(EXPOSED PAD)
+
PWRGD
PWRGD
V
SENSE
SENSE
PORTP
V
V
V
C
R
SFST
GND
NEG
NEG
CMP
CMP
CMP
NC
PG
SG
42691 BD
FB
–
+
LTC4269-1
32
31
30
29
27
26
16
17
14
19
20
21
22
24
33
9
11
42691fb