ltc4268cdkd-1-trpbf Linear Technology Corporation, ltc4268cdkd-1-trpbf Datasheet - Page 2

• Manufacturer Part Number: ltc4268cdkd-1-trpbf
• Description: High Power Pd With Synchronous Noopto Flyback Controller
• Manufacturer: Linear Technology Corporation

ABSOLUTE MAXIMUM RATINGS
ORDER INFORMATION
LTC4268-1
(Notes 1, 2)
V
V
V
R
SHDN Voltage ................V
PWRGD Voltage (Note 3)
PWRGD Voltage .............V
PWRGD Current .....................................................10mA
R
SENSE
UVLO, SYNC Voltage ...................................–0.3V to V
FB Current ..............................................................±2mA
V
Operating Ambient Temperature Range (Notes 4, 5)
Junction Temperature (Note 5) ............................. 150°C
Storage Temperature Range ................... –65°C to 150°C
LEAD FREE FINISH
LTC4268CDKD-1#PBF
LTC4268IDKD-1#PBF
LEAD BASED FINISH
LTC4268CDKD-1
LTC4268IDKD-1
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:
For more information on tape and reel specifi cations, go to:
2
PORTN
NEG
CC
CMP
CLASS
CLASS
Low Impedance Source ......................... –0.3V to 18V
Current Fed ..........................................30mA into V
Low Impedance Source ....V
Current Fed ..........................................................5mA
LTC4268-1C ............................................. 0°C to 70°C
LTC4268-1I .......................................... –40°C to 85°C
to GND Voltage (Note 3)
Voltage ...................V
Current .........................................................±1mA
–
, I
Current .....................................................100mA
Voltage .......................................... 0.3V to –90V
, SENSE
LIM_EN
Voltage ...V
+
Voltage ........................ –0.5V to +0.5V
TAPE AND REEL
LTC4268CDKD-1#TRPBF
LTC4268IDKD-1#TRPBF
TAPE AND REEL
LTC4268CDKD-1#TR
LTC4268IDKD-1#TR
PORTN
PORTN
PORTN
PORTN
NEG
+ 90V to V
+ 80V to V
+ 90V to V
+ 7V to V
+ 11V to V
http://www.linear.com/leadfree/
PART MARKING*
42681
42681
PART MARKING*
42681
42681
PORTN
PORTN
PORTN
PORTN
http://www.linear.com/tapeandreel/
NEG
– 0.3V
– 0.3V
– 0.3V
– 0.3V
–0.3V
CC
CC
PIN CONFIGURATION
PACKAGE DESCRIPTION
32-Lead (7mm × 4mm) Plastic DFN
32-Lead (7mm × 4mm) Plastic DFN
PACKAGE DESCRIPTION
32-Lead (7mm × 4mm) Plastic DFN
32-Lead (7mm × 4mm) Plastic DFN
HEATSINKING PLANE THAT IS ELECTRICALLY CONNECTED TO GND
EXPOSED PAD (PIN 33) MUST BE SOLDERED TO
R
I
V
V
V
LIM_EN
ENDLY
T
SHDN
PORTN
PORTN
PORTN
CLASS
32-LEAD (7mm × 4mm) PLASTIC DFN
SYNC
SFST
JMAX
OSC
V
t
NC
NC
SG
ON
FB
CC
= 150°C,θ
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
DKD32 PACKAGE
TOP VIEW
JA
= 49°C/W, θ
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
JC
= 4.7°C/W
V
NC
PWRGD
PWRGD
V
V
V
NC
PG
PGDLY
R
C
SENSE+
SENSE–
UVLO
V
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
TEMPERATURE RANGE
0°C to 70°C
–40°C to 85°C
PORTP
NEG
NEG
NEG
CMP
CMP
CMP
42681fa