Datasheet
LTC3545/LTC3545-1
2
35451fb
ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage .................................... –0.3V to 6V
RUNx, PGOODx ............................. –0.3V to (V
IN
+ 0.3V)
V
FBx
, SYNC/MODE ........................ –0.3V to (V
IN
+ 0.3V)
SWx .............................................. –0.3V to (V
IN
+ 0.3V)
P-Switch Source Current (DC) (Note 8) ...................1.1A
(Note 1)
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
General Characteristics
V
IN
Input Voltage Range
●
2.25 5.5 V
V
FBx
Regulated Feedback Voltage (Note 5) T
A
= 25°C
0°C ≤ T
A
≤ 85°C
LTC3545IUD; –40°C < T
A
< 125°C
●
●
0.592
0.588
0.588
0.6
0.6
0.6
0.608
0.612
0.612
V
V
V
ΔV
FBx
Reference Voltage Line Regulation (Note 5) V
IN
= 2.25V to 5.5V
●
0.08 0.15 %/V
The ● denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. V
IN
= PV
IN
= 3.6V unless otherwise noted. (Note 2)
N-Channel Sink Current (DC) (Note 8) .....................1.1A
Peak SW Sink and Source Current (Note 8) .............1.3A
Operating Junction Temperature Range
(Note 2) ............................................. –40°C to 125°C
Storage Temperature Range ................... –65°C to 125°C
LTC3545 LTC3545-1
16 15 14 13
5 6 7 8
17
UD PACKAGE
16-LEAD (3mm s 3mm) PLASTIC QFN
TOP VIEW
9
10
11
12
4
3
2
1SW1
PGOOD1
RUN2
PGOOD2
V
FB2
V
FB3
RUN3
SYNC/MODE
GNDA
V
IN
RUN1
V
FB1
SW2
PGND
PV
IN
SW3
T
JMAX
= 125°C, θ
JA
= 55°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
16 15 14 13
5 6 7 8
TOP VIEW
17
UD PACKAGE
16-LEAD (3mm s 3mm) PLASTIC QFN
9
10
11
12
4
3
2
1SW1
PGOOD1
RUN2
PGOOD2
V
FB2
V
FB3
RUN3
PGOOD3
GNDA
V
IN
RUN1
V
FB1
SW2
PGND
PV
IN
SW3
T
JMAX
= 125°C, θ
JA
= 55°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3545EUD#PBF LTC3545EUD#TRPBF LCSR
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 125°C
LTC3545IUD#PBF LTC3545IUD#TRPBF LCSR
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 125°C
LTC3545EUD-1#PBF LTC3545EUD-1#TRPBF LDDP
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 125°C
LTC3545IUD-1#PBF LTC3545IUD-1#TRPBF LDDP
16-Lead (3mm × 3mm) Plastic QFN
–40°C to 125°C
Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi ed by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based fi nish parts.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifi cations, go to:
http://www.linear.com/tapeandreel/
ORDER INFORMATION