Datasheet

LTC3854
2
3854fb
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (V
IN
) ........................ 40V to –0.3V
Top Side Driver Voltage (BOOST)
............... 46V to –0.3V
Switch Voltage (SW)
.................................. 40V to –5.0V
INTV
CC
, BOOST-SW .................................... 6V to –0.3V
SENSE
+
, SENSE
–
......................................... 6V to –0.3V
RUN/SS
........................................................ 6V to –0.3V
(Note 1)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3854EDDB#PBF LTC3854EDDB#TRPBF LDPC
12-Lead (3mm × 2mm) Plastic DFN
–40°C to 85°C
LTC3854IDDB#PBF LTC3854IDDB#TRPBF LDPC
12-Lead (3mm × 2mm) Plastic DFN
–40°C to 85°C
LTC3854EMSE#PBF LTC3854EMSE#TRPBF 3854 12-Lead Plastic MSOP –40°C to 85°C
LTC3854IMSE#PBF LTC3854IMSE#TRPBF 3854 12-Lead Plastic MSOP –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on non-standard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ITH, FB Voltages ....................................... 2.7V to –0.3V
INTV
CC
Peak Output Current (Note 8) ....................40mA
Operating Temperature Range
(Notes 2, 3)
..........................................–40°C to 85°C
Maximum Junction Temperature
...................... 125°C
Storage Temperature Range
.................. –65°C to 125°C
TOP VIEW
13
DDB PACKAGE
12-LEAD (3mm × 2mm) PLASTIC DFN
FB
ITH
RUN/SS
BOOST
TG
SW
SENSE
+
SENSE
–
V
IN
INTV
CC
BG
GND
8
7
10
9
11
12
5
6
4
2
3
1
T
JMAX
= 125°C, θ
JA
= 76°C/W, θ
JC
= 10°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
FB
ITH
RUN/SS
BOOST
TG
SW
12
11
10
9
8
7
SENSE
+
SENSE
–
V
IN
INTV
CC
BG
GND
TOP VIEW
MSE PACKAGE
12-LEAD PLASTIC MSOP
13
T
JMAX
= 125°C, θ
JA
= 40°C/W, θ
JC
= 16°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION