LTC3855 LINER [Linear Technology], LTC3855 Datasheet - Page 2

• Manufacturer Part Number: LTC3855
• Description: Dual, Fast, Accurate Step-Down DC/DC Controller
• Manufacturer: LINER [Linear Technology]

ABSOLUTE MAXIMUM RATINGS
LTC3838
V
BOOST1, BOOST2 Voltages ....................... –0.3V to 46V
SW1, SW2 Voltages ...................................... –5V to 40V
INTV
PGOOD2, RUN1, RUN2, (BOOST1-SW1),
(BOOST2-SW2), MODE/PLLIN Voltages ...... –0.3V to 6V
V
SENSE1
PIN CONFIGURATION
2
OUTSENSE1
IN
Voltage ................................................. –0.3V to 40V
CC
, DRV
MODE/PLLIN
V
–
TRACK/SS2
TRACK/SS1
OUTSENSE1
, SENSE2
PHASMD
CLKOUT
EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB
V
+
V
SGND
RNG2
RNG1
, V
ITH2
ITH1
CC1
RT
+
OUTSENSE1
, DRV
10
11
12
1
2
3
4
5
6
7
8
9
38-LEAD (5mm 7mm) PLASTIC QFN
–
Voltages ....................... –0.6V to 6V
38 37 36 35 34 33 32
13 14 15 16
T
JMAX
CC2
= 125°C, θ
UHF PACKAGE
, EXTV
–
TOP VIEW
, SENSE1
PGND
39
JA
17 18 19
CC
= 34°C/W
, PGOOD1,
+
, SENSE2
31
30
29
28
27
26
25
24
23
22
21
20
TG2
SW2
BG2
DRV
EXTV
INTV
PGND
V
DRV
BG1
SW1
TG1
IN
+
CC2
CC1
CC
,
CC
(Note 1)
TRACK/SS1, TRACK/SS2 Voltages .............. –0.3V to 5V
DTR1, DTR2, PHASMD, RT, V
ITH1, ITH2 Voltages ................ –0.3V to (INTV
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
EXPOSED PAD (PIN 39) IS PGND, MUST BE SOLDERED TO PCB
MODE/PLLIN
V
V
TRACK/SS2
TRACK/SS1
OUTSENSE1
OUTSENSE1
SENSE2
SENSE2
PHASMD
SENSE1
SENSE1
CLKOUT
V
V
SGND
DTR2
RNG2
RNG1
ITH2
ITH1
V
FB2
RT
–
+
+
–
+
–
T
38-LEAD PLASTIC TSSOP
JMAX
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
= 125°C, θ
FE PACKAGE
TOP VIEW
PGND
39
JA
RNG1
= 28°C/W
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
, V
RUN2
PGOOD2
BOOST2
TG2
SW2
BG2
DRV
EXTV
INTV
PGND
V
DRV
BG1
SW1
TG1
BOOST1
PGOOD1
RUN1
DTR1
IN
RNG2
CC2
CC1
CC
CC
, V
FB2
CC
,
+ 0.3V)
3838fa