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LT3599
ABSOLUTE MAXIMUM RATINGS
(Note 1)
V IN , SHDN /UVLO, OPENLED , SHORTLED ..................30V
SHDN /UVLO Pin Above V IN .........................................3V
SW ............................................................................45V
V OUT , V O_SW ..............................................................45V
LED1, LED2, LED3, LED4 ..........................................45V
PWM, SYNC, CTRL, FB, T SET , DISABLE4 ....................6V
V C , SS .........................................................................3V
V REF , RT, I SET ..............................................................2V
PIN CONFIGURATION
TOP VIEW
Operating Junction Temperature Range (Note 2)
LT3599E/LT3599I .............................. –40°C to 125°C
LT3599H ............................................ –40°C to 150°C
Maximum Junction Temperature
LT3599E/LT3599I ............................................. 125°C
LT3599H ........................................................... 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, sec) (Note 5) ......... 300°C
TOP VIEW
SW
V OUT
1
2
28 V IN
27 SHDN /UVLO
V O_SW
3
26 NC
32 31 30 29 28 27 26 25
LED1
LED2
4
5
25 GND
24 V REF
V OUT 1
V O_SW 2
24 NC
23 NC
LED3
LED4
DISABLE4
SHORTLED
6
7
8
9
29
23 SS
22 RT
21 PWM
20 NC
LED1 3
LED2 4
LED3 5
LED4 6
33
22 GND
21 V REF
20 SS
19 RT
NC 10
OPENLED 11
NC 12
19 SYNC
18 NC
17 T SET
DISABLE4 7
SHORTLED 8
9 10 11 12 13 14 15 16
18 PWM
17 SYNC
I SET 13
CTRL 14
FE PACKAGE
16 FB
15 V C
UH PACKAGE
28-LEAD PLASTIC TSSOP
32-LEAD (5mm
5mm) PLASTIC QFN
T JMAX = 150°C, θ JA = 28°C/W , θ JC = 10°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
T JMAX = 125°C, θ JA = 34°C/W
EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB
LEAD FREE FINISH
LT3599EFE#PBF
LT3599IFE#PBF
LT3599HFE#PBF
LT3599EUH#PBF
LT3599IUH#PBF
TAPE AND REEL
LT3599EFE#TRPBF
LT3599IFE#TRPBF
LT3599HFE#TRPBF
LT3599EUH#TRPBF
LT3599IUH#TRPBF
PART MARKING*
LT3599FE
LT3599FE
LT3599FE
3599
3599
PACKAGE DESCRIPTION
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
28-Lead Plastic TSSOP
32-Lead (5mm × 5mm) Plastic QFN
32-Lead (5mm × 5mm) Plastic QFN
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
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.
Consult LTC Marketing for information on non-standard lead based ?nish parts.
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/
3599fe
2
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