LTC4269CDKD-1#TRPBF Linear Technology, LTC4269CDKD-1#TRPBF Datasheet - Page 22
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
LTC4269-1
APPLICATIONS INFORMATION
22
R1
R2
16
FB
MOSFET DRAIN
PRIMARY-SIDE
–
PG VOLTAGE
SG VOLTAGE
VOLTAGE
1V
+
ENABLE
COLLAPSE
DETECT
LTC4269-1 FEEDBACK AMP
Figure 10a. LTC4269-1 Switching Regulator Feedback Amplifi er
1.237V
V
Figure 10b. LTC4269-1 Switching Regulator Timing Diagram
IN
V
FB
–
+
R
S
Q
t
ON(MIN)
V
ENABLE
V
DELAY
FLBK
CMP
17
42691 F10a
MIN ENABLE
AMPLIFIER
FEEDBACK
ENABLED
C
V
VCMP
FLBK
MP
PRIMARY
FLYBACK
V
IN
•
•
PG DELAY
T1
•
SECONDARY
0.8 • V
42691 F10b
MS
FLBK
+
C
OUT
ISOLATED
OUTPUT
42691fb