Datasheet
LTC3869/LTC3869-2
2
38692fa
For more information www.linear.com/LTC3869
absoluTe MaxiMuM raTings
(Note 1)
pin conFiguraTion
orDer inForMaTion
Input Supply Voltage: V
IN
........................... 40V to –0.3V
Top Side Driver Voltages:
BOOST1, BOOST2 ...................................... 46V to –0.3V
Switch Voltage: SW1, SW2 ........................... 40V to –5V
INTV
CC
, RUN1, RUN2, PGOOD, EXTV
CC
,
BOOST1-SW1, BOOST2-SW2 ....................... 6V to –0.3V
SENSE1
+
, SENSE2
+
, SENSE1
–
,
SENSE2
–
Voltages ......................................13V to –0.3V
MODE/PLLIN, I
LIM
, TK/SS1, TK/SS2,
FREQ Voltages ......................................INTV
CC
to –0.3V
I
TH1
, I
TH2
, V
FB1
, V
FB2
Voltages .............INTV
CC
to –0.3V
INTV
CC
Peak Output Current ................................100mA
Operating Junction Temperature Range
(Note 2) ..................................................–40°C to 125°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range ..................–65°C to 150°C
Lead Temperature (Soldering, 10 sec)
GN Package ...................................................... 300°C
9 10
TOP VIEW
SGND
29
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
11 12 13
28 27 26 25 24
14
23
6
5
4
3
2
1
SENSE1
–
TK/SS1
I
TH1
V
FB1
V
FB2
I
TH2
TK/SS2
SENSE2
–
BOOST1
BG1
V
IN
INTV
CC
BG2
PGND
BOOST2
TG2
SENSE1
+
RUN1
FREQ
MODE/PLLIN
SW1
TG1
SENSE2
+
RUN2
I
LIM
EXTV
CC
PGOOD
SW2
7
17
18
19
20
21
22
16
8
15
T
JMAX
= 125°C, θ
JA
= 34°C/W,
EXPOSED PAD (PIN 29) IS SGND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
GN PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RUN1
SENSE1
+
SENSE1
–
V
FB1
TK/SS1
I
TH1
SGND
I
TH2
TK/SS2
V
FB2
SENSE2
–
SENSE2
+
RUN2
EXTV
CC
FREQ
MODE/PLLIN
SW1
TG1
BOOST1
BG1
V
IN
INTV
CC
BG2
PGND
BOOST2
TG2
SW2
PGOOD
T
JMAX
= 125°C, θ
JA
= 80°C/W
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3869EUFD#PBF LTC3869EUFD#TRPBF 3869
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3869IUFD#PBF LTC3869IUFD#TRPBF 3869
28-Lead (4mm × 5mm) Plastic QFN
–40°C to 125°C
LTC3869IGN-2#PBF LTC3869IGN-2#TRPBF LTC3869GN-2 28-Lead Narrow Plastic SSOP –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 LT C Marketing for information on nonstandard 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/