Datasheet

LTC3829
2
3829fa
For more information www.linear.com/LTC3829
Input Supply Voltage (V
IN
) ......................... 40V to –0.3V
Topside Driver Voltages (BOOSTn)
............ 46V to –0.3V
Switch Voltage (SWn)
................................... 40V to –5V
Boosted Driver Voltage (BOOSTn – SWn)
.... 6V to –0.3V
INTV
CC
, PGOOD, RUN, EXTV
CC
.................... 6V to –0.3V
ITEMP, IFAST, V
FB
Pin Voltages .............. INTV
CC
to –0.3V
TK/SS, FREQ, DIFFP, DIFFN, DIFFOUT, ISET
AVP, I
LIM
, MODE, PLLIN Voltages .......... INTV
CC
to –0.3V
(Note 1)
ABSOLUTE MAXIMUM RATINGS
13 14 15 16
TOP VIEW
39
UHF PACKAGE
38-LEAD (5mm × 7mm) PLASTIC QFN
17 18 19
38 37 36 35 34 33 32
24
25
26
27
28
29
30
31
8
7
6
5
4
3
2
1DIFFN
DIFFP
RUN
AVP
SENSE1
+
SENSE1
–
SENSE2
+
SENSE2
–
TK/SS
FREQ
SENSE3
+
SENSE3
–
SW1
BG1
BG2
SW2
TG2
BOOST2
V
IN
INTV
CC
EXTV
CC
BG3
SW3
TG3
DIFFOUT ITEMP IFAST MODE CLKOUT BOOST1 TG1
V
FB
I
TH
ISET
I
LIM
PGOOD
PLLIN
BOOST3
23
22
21
20
9
10
11
12
T
JMAX
= 125°C, θ
JA
= 34°C/W
EXPOSED PAD (PIN 39) IS SGND/PGND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
TOP VIEW
FE PACKAGE
38-LEAD PLASTIC TSSOP
38
27
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
ITEMP
DIFFOUT
DIFFN
DIFFP
RUN
AVP
SENSE1
+
SENSE1
–
SENSE2
+
SENSE2
–
TK/SS
FREQ
SENSE3
+
SENSE3
–
V
FB
I
TH
ISET
I
LIM
PGOOD
IFAST
MODE
CLKOUT
BOOST1
TG1
SW1
BG1
BG2
SW2
TG2
BOOST2
V
IN
INTV
CC
EXTV
CC
BG3
SW3
TG3
BOOST3
PLLIN
39
T
JMAX
= 125°C, θ
JA
= 25°C/W
EXPOSED PAD (PIN 39) IS SGND/PGND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
I
TH
Voltage ............................................ INTV
CC
to –0.3V
SENSE
+
n, SENSE
–
n ................................... 5.7V to –0.3V
Operating Junction Temperature Range
(Notes 2, 3)
............................................ –45°C to 125°C
Storage Temperature Range
................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec) (FE)
........... 300°C