LTC4263
2
4263fe
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Supply Voltages
V
SS
V
DD48
........................................... 0.3V to 80V
V
DD5
........................................V
SS
0.3V to V
SS
+ 6V
Pin Voltages and Currents
LEGACY, MIDSPAN, ENFCLS, PWRMGT
SD, OSC ..................................V
SS
0.3V to V
SS
+ 6V
LED .......................................V
SS
0.3V to V
SS
+ 80V
OUT , ACOUT ............................................(See Note 3)
(Notes 1, 2)
The l denotes the speci cations which apply over the full operating
temperature range, otherwise speci cations are at T
A
= 25癈. V
DD48
V
SS
= 48V and V
DD5
not driven externally. All voltages are
relative to V
SS
unless otherwise noted. (Notes 2, 5)
Operating Ambient Temperature Range
LTC4263C ................................................0癈 to 70癈
LTC4263I .............................................40癈 to 85癈
Junction Temperature (Note 4) .............................125癈
Storage Temperature Range ...................65癈 to 150癈
Lead Temperature (Soldering, 10 sec)
SO .....................................................................300癈
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supplies
V
SUPPLY
48V Supply Voltage
V
DD48
V
SS
To Maintain IEEE Compliant Output
l
l
33
46
48
66
57
V
V
V
UVLO_OFF
UVLO Turn-Off Voltage
V
DD48
V
SS
Decreasing
l
29
31
33
V
V
UVLO_HYS
UVLO Hysteresis
l
0.1
1
V
1
2
3
4
5
6
7
14
13
12
11
10
9
8
15
V
DD5
ENFCLS
SD
V
DD48
OUT
OUT
ACOUT
LED
LEGACY
MIDSPAN
PWRMGT
V
SS
V
SS
OSC
TOP VIEW
DE14 PACKAGE
14-LEAD (4mm 3mm) PLASTIC DFN
T
JMAX
= 125癈, ?/DIV>
JA
= 43癈/W, ?/DIV>
JC
= 4.3癈/W
EXPOSED PAD (PIN 15) IS V
SS
, MUST BE SOLDERED TO PCB
TOP VIEW
S PACKAGE
14-LEAD PLASTIC SO
1
2
3
4
5
6
7
14
13
12
11
10
9
8
LED
LEGACY
MIDSPAN
PWRMGT
V
SS
V
SS
OSC
V
DD5
ENFCLS
SD
V
DD48
OUT
OUT
ACOUT
T
JMAX
= 125癈, ?/DIV>
JA
= 90癈/W, ?/DIV>
JC
= 37癈/W
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC4263CDE#PBF
LTC4263CDE#TRPBF
4263
14-Lead (4mm ?3mm) Plastic DFN
0癈 to 70癈
LTC4263IDE#PBF
LTC4263IDE#TRPBF
4263
14-Lead (4mm ?3mm) Plastic DFN
40癈 to 85癈
LTC4263CS#PBF
LTC4263CS#TRPBF
4263CS
14-Lead Plastic SO
0癈 to 70癈
LTC4263IS#PBF
LTC4263IS#TRPBF
4263IS
14-Lead Plastic SO
40癈 to 85癈
Consult LTC Marketing for parts speci ed with wider operating temperature ranges. *The temperature grade is identi 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 speci cations, go to: http://www.linear.com/tapeandreel/
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