Linear Technology DC1335B-C - LTC4269-1 | PoE Powered Device w/48V Isolated Auxiliary DC1335B-C DC1335B-C 数据表
产品代码
DC1335B-C
LTC4269-1
2
42691fc
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
Pins with Respect to V
PORTN
V
PORTP
Voltage ......................................... –0.3V to 100V
V
NEG
Voltage ......................................... –0.3V to V
PORTP
V
NEG
Pull-Up Current ..................................................1A
SHDN ....................................................... –0.3V to 100V
R
R
CLASS
, Voltage ............................................ –0.3V to 7V
R
CLASS
Source Current ...........................................50mA
PWRGD Voltage (Note 3)
Low Impedance Source ......V
Low Impedance Source ......V
NEG
–0.3V to V
NEG
+11V
Sink
Current
.........................................................5mA
PWRGD, T2P Voltage ............................... –0.3V to 100V
PWRGD, T2P Sink Current .....................................10mA
Pins with Respect to GND
V
Pins with Respect to GND
V
CC
(Note 3)
Low Impedance Source ....................... –0.3V to +18V
Sink
Sink
Current
.......................................................30mA
SENSE
–
, SENSE
+
Voltage ........................ –0.5V to +0.5V
UVLO, SYNC Voltage ...................................–0.3V to V
CC
FB Current ..............................................................±2mA
V
V
CMP
Current .........................................................±1mA
Operating Ambient Temperature Range
LTC4269C-1 ................................................. 0°C to 70°C
LTC4269I-1 .............................................. –40°C to 85°C
LTC4269C-1 ................................................. 0°C to 70°C
LTC4269I-1 .............................................. –40°C to 85°C
(Notes 1, 2)
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
33
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
V
PORTP
NC
PWRGD
PWRGD
NC
V
NEG
V
NEG
NC
PG
PGDLY
R
CMP
C
CMP
SENSE
+
SENSE
–
UVLO
V
CMP
SHDN
T2P
R
CLASS
NC
V
PORTN
V
PORTN
NC
NC
SG
V
CC
t
ON
ENDLY
SYNC
SFST
OSC
FB
TOP VIEW
DKD32 PACKAGE
32-LEAD (7mm × 4mm) PLASTIC DFN
T
JMAX
= 125°C, θ
JA
= 34°C/W, θ
JC
= 2°C/W
GND, EXPOSED PAD (PIN 33) MUST BE SOLDERED TO A
HEAT SINKING PLANE THAT IS CONNECTED TO V
NEG
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4269CDKD-1#PBF
LTC4269CDKD-1#TRPBF
42691
32-Lead (7mm × 4mm) Plastic DFN
0°C to 70°C
LTC4269IDKD-1#PBF
LTC4269IDKD-1#TRPBF
42691
32-Lead (7mm × 4mm) Plastic DFN
–40°C to 85°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/