Datasheet

LT3597
2
3597fa
pin conFiguraTionabsoluTe MaxiMuM raTings
Input Voltage (V
IN
), EN/UVLO ...................................60V
BOOST1-3 .................................................................85V
BOOST Pin Above SW Pin ........................................ 25V
LED1-3, V
OUT1-3
........................................................ 42V
BIAS, FAULT ..............................................................25V
V
REF
, RT, I
SET1-3
, T
SET
, CTRLM ...................................3V
FB1-3, CTRL1-3, PWM1-3, SYNC ...............................6V
Operating Junction Temperature Range
(Notes 2, 3) ........................................–40°C to 125°C
Maximum Junction Temperature........................... 125°C
Storage Temperature Range ...................–65°C to 150°C
(Note 1)
18 19 20 21
TOP VIEW
53
GND
UHG PACKAGE
VARIATION: UHG52(39)
52-LEAD (5mm × 8mm) PLASTIC QFN
22 23 24 25 26
51 50 48 46 44
37
39
41
43
7
6
4
2
BST1
SW1
DA1
FB1
EN/UVLO
T
SET
V
REF
CTRLM
I
SET1
I
SET2
I
SET3
RT
DA3
SW3
BST3
BIAS
FB3
FB2
CTRL1
CTRL2
CTRL3
PWM1
PWM2
PWM3
SYNC
V
IN
V
IN
BST2 SW2 DA2
GND
V
OUT1
LED1 LED2
V
OUT2
V
OUT3
LED3
FAULT
NC
35
34
33
32
31
30
29
28
27
9
11
12
13
14
15
16
17
T
JMAX
= 125°C, θ
JA
= 32°C/W
EXPOSED PAD (PIN 53) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3597EUHG#PBF LT3597EUHG#TRPBF 3597
52-Lead (5mm × 8mm) Plastic QFN
–40°C to 125°C
LT3597IUHG#PBF LT3597IUHG#TRPBF 3597
52-Lead (5mm × 8mm) Plastic QFN
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/