Datasheet
LTC3605A
2
3605afg
For more information www.linear.com/LTC3605A
pin conFiguraTionabsoluTe MaxiMuM raTings
PV
IN
, SV
IN
, SW Voltage.............................. –0.3V to 22V
SW Transient Voltage ..................................–2V to 24.5V
BOOST Voltage ..........................–0.3V to PV
IN
+ INTV
CC
RUN Voltage............................................... –0.3V to 22V
V
ON
Voltage ............................................... –0.3V to SV
IN
INTV
CC
Voltage ......................................... –0.3V to 3.6V
ITH, RT, CLKOUT, PGOOD Voltage ........ –0.3V to INTV
CC
CLKIN, PHMODE, MODE Voltage ..........–0.3V to INTV
CC
TRACK/SS, FB Voltage ..........................–0.3V to INTV
CC
Operating Junction Temperature Range
(Note 2) .................................................. –40°C to 125°C
Storage Temperature Range .................. –65°C to 125°C
(Note 1)
24 23 22 21 20 19
7 8 9
TOP VIEW
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
RT
PHMODE
MODE
FB
TRACK/SS
ITH
PV
IN
PV
IN
SW
SW
SW
SW
CLKIN
CLKOUT
SGND
INTV
CC
BOOST
SV
IN
RUN
PGOOD
V
ON
PGND
SW
SW
25
PGND
T
JMAX
= 125°C, θ
JA
= 37°C/W
EXPOSED PAD (PIN 25) IS PGND, MUST BE SOLDERED TO PCB
orDer inForMaTion
elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
SV
IN
SV
IN
Supply Range 4 20 V
PV
IN
V
IN
Power Supply Range 1.2 20 V
I
Q
Input DC Supply Current
Active
Shutdown
(Note 3)
Mode = 0, R
T
= 162k
V
IN
=12V, RUN = 0
1.5
11
5
40
mA
µA
V
FB
Feedback Reference Voltage ITH
=1.2V (Note 4)
l
0.594 0.600 0.606 V
DV
FB(LINE)
Feedback Voltage Line Regulation V
IN
= 4V to 20V, ITH = 1.2V
l
0.001 0.03 %/V
DV
FB(LOAD)
Feedback Voltage Load Regulation
l
0.1 0.3 %
I
FB
Feedback Pin Input Current ±30 nA
g
m
(EA) Error Amplifier Transconductance ITH = 1.2V 1.15 1.35 1.6 mS
t
ON(MIN)
Minimum On-Time 40 ns
t
OFF(MIN)
Minimum Off-Time 70 ns
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
J
≈ T
A
= 25°C (Note 2). V
IN
= 12V unless otherwise noted.
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3605AEUF#PBF LTC3605AEUF#TRPBF 3605A 24-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C
LTC3605AIUF#PBF LTC3605AIUF#TRPBF 3605A 24-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified 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 specifications, go to: http://www.linear.com/tapeandreel/. Some packages are available in 500 unit reels through
designated sales channels with
#TRMPBF suffix.
http://www.linear.com/product/LTC3605A#orderinfo
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