Datasheet
LTC4263-1
2
42631fa
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, SD, OSC ..V
SS
– 0.3V to V
SS
+6V
LED .......................................V
SS
– 0.3V to V
SS
+ 80V
OUT, ACOUT ............................................ (See Note 3)
Operating Ambient Temperature Range
LTC4263CDE-1 ............................................ 0°C to 70°C
LTC4263IDE-1 ......................................... –40°C to 85°C
Junction Temperature (Note 4) ............................. 125°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
(Note 1, Note 2)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Power Supplies
V
SUPPLY
Supply Voltage V
DD48
– V
SS
30W Output Power
l
33 48
56
66 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
V
OVLO_OFF
OVLO Turn-Off Voltage V
DD48
– V
SS
Increasing
l
66 70 74 V
V
OVLO_HYS
OVLO Hysteresis
l
0.2 2 V
V
DD5
V
DD5
Supply Voltage Driven Externally
l
4.5 5 5.5 V
V
DD5
Internal Supply Driven Internally
l
4.3 4.4 4.5 V
I
DD48
V
DD48
Supply Current V
DD5
– V
SS
= 5V
Internal V
DD5
l
l
1
2
2
4
mA
mA
I
DD5
V
DD5
Supply Current V
DD5
– V
SS
= 5V
l
12 mA
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
DD48
– V
SS
= 48V and V
DD5
not driven externally. All voltages are
relative to V
SS
unless otherwise noted. (Note 2, Note 5)
PIN CONFIGURATION
1
2
3
4
5
6
7
14
13
12
11
10
9
8
15
V
DD5
V
SS
SD
V
DD48
OUT
OUT
ACOUT
LED
LEGACY
MIDSPAN
V
SS
V
SS
V
SS
OSC
TOP VIEW
DE14 PACKAGE
14-LEAD (4mm s 3mm) PLASTIC DFN
T
JMAX
= 125°C, θ
JA
= 43°C/W, θ
JC
= 4.3°C/W
EXPOSED PAD (PIN 15) IS V
SS
, MUST BE SOLDERED TO PCB
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC4263CDE-1#PBF
LTC4263IDE-1#PBF
LTC4263CDE-1#TRPBF
LTC4263IDE-1#TRPBF
42631
42631
14-Lead (4mm × 3mm) Plastic DFN
14-Lead (4mm × 3mm) Plastic DFN
0°C to 70°C
–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.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
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/
ORDER INFORMATION