Datasheet

LTC3852
2
3852f
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (V
IN1
) .........................6V to –0.3V
Top Side Driver Voltage (BOOST) ...............46V to – 0.3V
Switch Voltage (SW) ..................................40V to – 0.3V
V
PUMP
.......................................................5.5V to –0.3V
SHDN, RUN ..................................................6V to – 0.3V
V
PUMP
Short-Circuit Duration .......................... Indefi nite
V
IN2
............................................................40V to –0.3V
INTV
CC
, (BOOST-SW), RUN, PGOOD ...........6V to – 0.3V
INTV
CC
, Peak Output Current .................................50mA
SENSE
+
, SENSE
–
..........................................6V to – 0.3V
MODE/PLLIN, TRACK/SS .....................INTV
CC
to –0.3V
FREQ/PLLFLTR .....................................INTV
CC
to –0.3V
I
TH
, V
FB
........................................................3V to – 0.3V
Operating Junction Temperature (Note 2) ............. 125°C
Storage Temperature Range ..................–65°C to 125°C
(Note 1)
TOP VIEW
UDD PACKAGE
24-LEAD
(
3mm s 5mm
)
PLASTIC QFN
SENSE
–
SENSE
+
PGOOD
GND2
BG
NC
C
+
C
–
FREQ/PLLFLTR
MODE/PLLIN
SW
TG
BOOST
V
IN2
INTV
CC
V
PUMP
NC
SHDN
GND1
V
IN1
V
FB
I
TH
TRACK/SS RUN
6
5
4
3
2
1
7
8
15
16
17
18
19
20
14
13
9101112
24 23 22 21
25
GND
T
JMAX
= 125°C, q
JA
= 38°C/W
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3852EUDD#PBF LTC3852EUDD#TRPBF LFRJ
24-Lead (3mm ¥ 5mm) Plastic QFN
–40°C to 125°C
LTC3852IUDD#PBF LTC3852IUDD#TRPBF LFRJ
24-Lead (3mm ¥ 5mm) 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.
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/