Datasheet
LTC3834
2
3834fb
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (V
IN
) ......................... 36V to –0.3V
Topside Driver Voltage (BOOST) ................ 42V to –0.3V
Switch Voltage (SW) ..................................... 36V to –5V
INTV
CC
, (BOOST-SW), CLKOUT, PGOOD .. 8.5V to –0.3V
RUN, TRACK/SS ......................................... 7V to –0.3V
SENSE
+
, SENSE
–
Voltages ........................ 11V to –0.3V
PLLIN/MODE, PHASMD, PLLLPF ......... INTV
CC
to –0.3V
EXTV
CC
...................................................... 10V to –0.3V
(Note 1)
FE PACKAGE
20-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
9
10
TOP VIEW
20
19
18
17
16
15
14
13
12
11
CLKOUT
PLLLPF
I
TH
TRACKS/SS
V
FB
SGND
PGND
BG
INTV
CC
EXTV
CC
PHASMD
PLLIN/MODE
PGOOD
SENSE
+
SENSE
–
RUN
BOOST
TG
SW
V
IN
21
T
JMAX
= 125°C, θ
JA
= 35°C/W
EXPOSED PAD (PIN 21) IS SGND, MUST BE SOLDERED TO PCB
20 19 18 17
7 8
TOP VIEW
UFD PACKAGE
20-PIN (4mm s 5mm) PLASTIC QFN
9 10
6
5
4
3
2
1
11
12
13
14
15
16
I
TH
TRACK/SS
V
FB
SGND
PGND
BG
PGOOD
SENSE
+
SENSE
–
RUN
BOOST
TG
PLLLPF
CLKOUT
PHASMD
PLLIN/MODE
INTV
CC
EXTV
CC
V
IN
SW
21
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN 21) IS SGND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3834EFE#PBF LTC3834EFE#TRPBF LTC3834FE 20-Lead Plastic TSSOP –40°C to 85°C (Note 2)
LTC3834IFE#PBF LTC3834IFE#TRPBF LTC3834FE 20-Lead Plastic TSSOP –40°C to 85°C
LTC3834EUFD#PBF LTC3834EUFD#TRPBF 3834
20-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°C (Note 2)
LTC3834IUFD#PBF LTC3834IUFD#TRPBF 3834
20-Lead (4mm × 5mm) Plastic QFN
–40°C to 85°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/
I
TH
, V
FB
Voltages ...................................... 2.7V to –0.3V
Peak Output Current <10μs (TG, BG) ..........................3A
INTV
CC
Peak Output Current ................................. 50mA
Operating Temperature Range (Note 2).... –40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range ................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
FE Package ....................................................... 300°C