LTC3835 Linear Technology, LTC3835 Datasheet - Page 2
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LTC3835
Manufacturer Part Number
LTC3835
Description
Low IQ Synchronous Step-Down Controller
Manufacturer
Linear Technology
Datasheet
1.LTC3835.pdf
(28 pages)
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ABSOLUTE MAXIMUM RATINGS
LTC3835
Input Supply Voltage (V
Top Side Driver Voltage (BOOST) ............... 42V to –0.3V
Switch Voltage (SW) ..................................... 36V to –5V
INTV
RUN, TRACK/SS ......................................... 7V to –0.3V
SENSE
PLLIN/MODE, PHASMD, PLLLPF ......... INTV
EXTV
I
PIN CONFIGURATION
2
TH
, V
CC
CC
FB
+
, (BOOST-SW), CLKOUT, PGOOD ... 8.5V to –0.3V
, SENSE
...................................................... 10V to –0.3V
Voltages ...................................... 2.7V to –0.3V
EXPOSED PAD (PIN 21) IS SGND MUST BE SOLDERED TO PCB
TRACKS/SS
CLKOUT
PLLLPF
EXTV
INTV
SGND
PGND
–
V
I
BG
Voltages ........................ 11V to –0.3V
TH
CC
CC
FB
20-LEAD PLASTIC TSSOP
T
10
1
2
3
4
5
6
7
8
9
JMAX
IN
FE PACKAGE
= 125°C, θ
TOP VIEW
) ......................... 36V to –0.3V
21
JA
= 35°C/W
20
19
18
17
16
15
14
13
12
11
PHASMD
PLLIN/MODE
PGOOD
SENSE
SENSE
RUN
BOOST
TG
SW
V
IN
+
–
CC
to –0.3V
(Note 1)
Peak Output Current <10μs (TG,BG) ...........................3A
INTV
Operating Temperature Range (Note 2).... –40°C to 85°C
Junction Temperature (Note 3) ............................. 125°C
Storage Temperature Range
Storage Temperature Range
Lead Temperature (FE Package, Soldering, 10 sec) ... 300°C
FE Package ........................................ –65°C to 150°C
UFD Package ..................................... –65°C to 125°C
CC
Peak Output Current ................................. 50mA
EXPOSED PAD (PIN 21) IS SGND MUST BE SOLDERED TO PCB
TRACK/SS
SGND
PGND
V
I
20-PIN (4mm 5mm) PLASTIC QFN
BG
TH
FB
T
1
2
3
4
5
6
JMAX
20 19 18 17
= 125°C, θ
7
UFD PACKAGE
TOP VIEW
8
21
9 10
JA
= 37°C/W
16
15
14
13
12
11
PGOOD
SENSE
SENSE
RUN
BOOST
TG
+
–
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