LTC3780EG Linear Technology, LTC3780EG Datasheet - Page 2

• Manufacturer Part Number: LTC3780EG
• Description: IC,SMPS CONTROLLER,CURRENT-MODE,CMOS,SSOP,24PIN,PLASTIC
• Manufacturer: Linear Technology

PACKAGE/ORDER
ABSOLUTE
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
SYMBOL
Main Control Loop
V
I
V
LTC3780
Input Supply Voltage (V
Topside Driver Voltages
(BOOST1, BOOST2) .................................. –0.3V to 42V
Switch Voltage (SW1, SW2) ........................ –5V to 36V
INTV
(BOOST2 – SW2), PGOOD .......................... –0.3V to 7V
PLLIN Voltage .......................................... –0.3V to 5.5V
PLLFLTR Voltage ...................................... –0.3V to 2.7V
FCB, STBYMD Voltages ....................... –0.3V to INTV
I
2
VOSENSE
TH
OSENSE
LOADREG
PLLFLTR
STBYMD
V
SENSE
SENSE
PGOOD
, V
OSENSE
PLLIN
SGND
RUN
CC
FCB
OSENSE
I
SS
TH
+
–
, EXTV
T
JMAX
24-LEAD PLASTIC SSOP
10
11
12
1
2
3
4
5
6
7
8
9
= 125°C, θ
G PACKAGE
Voltages .............................. –0.3V to 2.4V
TOP VIEW
CC
PARAMETER
Feedback Reference Voltage
Feedback Pin Input Current
Output Voltage Load Regulation
, RUN, SS, (BOOST – SW1),
JA
W
MAXIMUM
= 130°C/W
24
23
22
21
20
19
18
17
16
15
14
13
IN
BOOST1
TG1
SW1
V
EXTV
INTV
BG1
PGND
BG2
SW2
TG2
BOOST2
)........................ –0.3V to 36V
IN
W W
CC
CC
INFORMATION
U
ORDER PART
RATINGS
LTC3780EG
LTC3780IG
NUMBER
W
U
A
= 25°C. V
CONDITIONS
I
(Note 3)
(Note 3)
TH
∆I
∆I
The
= 1.2V (Note 3)
TH
TH
U
(Note 1)
= 1.2V to 0.7V
= 1.2V to 1.8V
●
CC
IN
V
indicates specifications which apply over the full operating
SENSE
SENSE
PLLFTR
OSENSE
= 15V unless otherwise noted.
SGND
RUN
FCB
I
TH
Peak Output Current <10ms (TG1, TG2, BG1, BG2) .. 3A
INTV
Operating Temperature Range (Note 7)
Junction Temperature (Note 2) ............................ 125°C
Storage Temperature Range .................. –65°C to 125°C
Lead Temperature (Soldering, 10 sec)
+
–
1
2
3
4
5
6
7
8
LTC3780E ........................................... – 40°C to 85°C
LTC3780I ............................................ – 40°C to 85°C
SSOP Only ........................................................ 300°C
32-LEAD (5mm × 5mm) PLASTIC QFN
32 31 30 29 28 27 26 25
EXPOSED PAD (PIN 33) IS SGND
9 10 11 12
CC
(MUST BE SOLDERED TO PCB)
T
JMAX
Peak Output Current ................................ 40mA
= 125°C, θ
UH PACKAGE
TOP VIEW
33
13 14 15 16
JA
= 34°C/W
●
●
●
0.792
MIN
24
23
22
21
20
19
18
17
SW1
V
EXTV
INTV
BG1
PGND
BG2
SW2
IN
CC
CC
0.800
–0.1
TYP
–5
0.1
ORDER PART
LTC3780EUH
LTC3780IUH
MARKING
NUMBER
UH PART
0.808
3780
3780I
MAX
–0.5
–50
0.5
UNITS
3780f
nA
%
%
V