Datasheet
LTC3780
2
Rev G
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ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (V
IN
) ........................ –0.3V to 36V
Topside Driver Voltages
(BOOST1, BOOST2)................................... –0.3V to 42V
Switch Voltage (SW1, SW2) ......................... –5V to 36V
INTV
CC
, EXTV
CC
, (BOOST – SW1),
(BOOST2 – SW2), PGOOD .......................... –0.3V to 7V
RUN, SS ....................................................... –0.3V to 6V
PLLIN Voltage .......................................... –0.3V to 5.5V
PLLFLTR Voltage ...................................... –0.3V to 2.7V
FCB, STBYMD Voltages ....................... –0.3V to INTV
CC
(Note 1)
I
TH
, V
OSENSE
Voltages .............................. –0.3V to 2.4V
Peak Output Current <10µs (TG1, TG2, BG1, BG2) ...... 3A
INTV
CC
Peak Output Current ................................. 40mA
Operating Junction Temperature Range (Notes 2, 7)
LTC3780E ............................................–40°C to 85°C
LTC3780I ........................................... –40°C to 125°C
LTC3780MP ....................................... –55°C to 125°C
Storage Temperature Range .................. –65°C to 125°C
Lead Temperature (Soldering, 10 sec)
SSOP Only ........................................................300°C
1
2
3
4
5
6
7
8
9
10
11
12
TOP VIEW
G PACKAGE
24-LEAD PLASTIC SSOP
T
JMAX
= 125°C, θ
JA
= 130°C/W
24
23
22
21
20
19
18
17
16
15
14
13
PGOOD
SS
SENSE
+
SENSE
–
I
TH
V
OSENSE
SGND
RUN
FCB
PLLFLTR
PLLIN
STBYMD
BOOST1
TG1
SW1
V
IN
EXTV
CC
INTV
CC
BG1
PGND
BG2
SW2
TG2
BOOST2
32 31 30 29 28 27 26 25
9 10 11 12
TOP VIEW
33
UH PACKAGE
32-LEAD (5mm × 5mm) PLASTIC QFN
T
JMAX = 125
°C, θ
JA
= 34°C/W
EXPOSED PAD (PIN 33) IS SGND, MUST BE SOLDERED TO PCB
13 14 15 16
17
18
19
20
21
22
23
24
8
7
6
5
4
3
2
1SENSE
+
SENSE
–
I
TH
V
OSENSE
SGND
RUN
FCB
PLLFTR
SW1
V
IN
EXTV
CC
INTV
CC
BG1
PGND
BG2
SW2
NC
SS
PGOOD
NC
NC
BOOST1
TG1
NC
NC
PLLIN
STBYMD
NC
NC
BOOST2
TG2
NC
PIN CONFIGURATION
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