Datasheet

LTC3838
2
3838fa
ABSOLUTE MAXIMUM RATINGS
V
IN
Voltage ................................................. –0.3V to 40V
BOOST1, BOOST2 Voltages ....................... –0.3V to 46V
SW1, SW2 Voltages ...................................... –5V to 40V
INTV
CC
, DRV
CC1
, DRV
CC2
, EXTV
CC
, PGOOD1,
PGOOD2, RUN1, RUN2, (BOOST1-SW1),
(BOOST2-SW2), MODE/PLLIN Voltages ...... –0.3V to 6V
V
OUTSENSE1
+
, V
OUTSENSE1
–
, SENSE1
+
, SENSE2
+
,
SENSE1
–
, SENSE2
–
Voltages ....................... –0.6V to 6V
(Note 1)
13 14 15 16
TOP VIEW
39
PGND
UHF PACKAGE
38-LEAD (5mm w 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
1TRACK/SS2
ITH2
V
RNG2
PHASMD
MODE/PLLIN
CLKOUT
SGND
RT
V
RNG1
ITH1
TRACK/SS1
V
OUTSENSE1
+
TG2
SW2
BG2
DRV
CC2
EXTV
CC
INTV
CC
PGND
V
IN
DRV
CC1
BG1
SW1
TG1
V
FB2
SENSE2
+
SENSE2
–
DTR2 RUN2 PGOOD2 BOOST2
V
OUTSENSE1
–
SENSE1
+
SENSE1
–
DTR1
RUN1
PGOOD1
BOOST1
23
22
21
20
9
10
11
12
T
JMAX
= 125°C, θ
JA
= 34°C/W
EXPOSED PAD (PIN 39) IS 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
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
DTR2
SENSE2
–
SENSE2
+
V
FB2
TRACK/SS2
ITH2
V
RNG2
PHASMD
MODE/PLLIN
CLKOUT
SGND
RT
V
RNG1
ITH1
TRACK/SS1
V
OUTSENSE1
+
V
OUTSENSE1
–
SENSE1
+
SENSE1
–
RUN2
PGOOD2
BOOST2
TG2
SW2
BG2
DRV
CC2
EXTV
CC
INTV
CC
PGND
V
IN
DRV
CC1
BG1
SW1
TG1
BOOST1
PGOOD1
RUN1
DTR1
39
PGND
T
JMAX
= 125°C, θ
JA
= 28°C/W
EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
TRACK/SS1, TRACK/SS2 Voltages .............. –0.3V to 5V
DTR1, DTR2, PHASMD, RT, V
RNG1
, V
RNG2
, V
FB2
,
ITH1, ITH2 Voltages ................–0.3V to (INTV
CC
+ 0.3V)
Operating Junction Temperature Range
(Note 2, 3, 4) .......................................... –40°C to 125°C
Storage Temperature Range ..................–65°C to 150°C
Lead Temperature (Soldering, 10 sec)
FE Package .......................................................300°C