Datasheet
LTC3609
2
3609fb
pin conFiguraTionabsoluTe MaxiMuM raTings
Input Supply Voltage (SV
IN
, PV
IN
, I
ON
) ....... 36V to –0.3V
Boosted Topside Driver Supply Voltage
(BOOST) ................................................ 42V to –0.3V
SW Voltage ............................................ 36V to –0.3V
INTV
CC
, EXTV
CC
, (BOOST – SW), RUN/SS,
PGOOD Voltages ...................................... 7V to –0.3V
FCB, V
ON
, V
RNG
Voltages ............ INTV
CC
+ 0.3V to –0.3V
I
TH
, V
FB
Voltages ....................................... 2.7V to –0.3V
Operating Junction Temperature Range
(Notes 2, 4) ........................................ –40°C to 125°C
Storage Temperature Range ................... –55°C to 125°C
(Note 1)
TOP VIEW
WKG PACKAGE
52-LEAD (7mm s 8mm) QFN MULTIPAD
PV
IN
1
PV
IN
2
PV
IN
3
PV
IN
4
PV
IN
5
PV
IN
6
PV
IN
7
SW 8
NC 9
SGND 10
BOOST 11
RUN/SS 12
V
ON
13
SGND 14
40 PGND
39 PGND
38 PGND
37 PGND
36 PGND
35 PGND
34 PGND
33 SW
32 INTV
CC
31 INTV
CC
30 SV
IN
29 EXTV
CC
28 NC
27 SGND
SGND 15
PGOOD 16
V
RNG
17
I
TH
18
FCB 19
SGND 20
NC 21
I
ON
22
V
FB
23
NC 24
NC 25
SGND 26
52 PV
IN
51 PV
IN
50 PV
IN
49 PV
IN
48 PV
IN
47 SW
46 SW
45 SW
44 SW
43 SW
42 SW
41 SW
53
PV
IN
55
SW
54
SGND
T
JMAX
= 125°C, θ
JA
= 29°C/W
orDer inForMaTion
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3609EWKG#PBF LTC3609EWKG#TRPBF LTC3609WKG
52-Lead (7mm × 8mm) Plastic QFN
–40°C to 125°C
LTC3609IWKG#PBF LTC3609IWKG#TRPBF LTC3609WKG
52-Lead (7mm × 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/