Datasheet
LTC3729
2
3729fb
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (V
IN
) ......................... 36V to –0.3V
Topside Driver Voltages (BOOST1,2)
......... 42V to –0.3V
Switch Voltage (SW1, 2)
.............................. 36V to –5 V
SENSE1
+
, SENSE2
+
, SENSE1
–
,
SENSE2
–
Voltages .........................(1.1)INTV
CC
to –0.3V
EAIN, V
OS
+
, V
OS
–
, EXTV
CC
, INTV
CC
,
RUN/SS, PGOOD Voltages
.......................... 7V to –0.3V
Boosted Driver Voltage (BOOST‑SW) ........... 7V to –0.3V
PLLFLTR, PLLIN, CLKOUT, PHASMD,
V
DIFFOUT
Voltages ..............INTV
CC
to –0.3V for V
IN
≥ 7V
(Note 1)
V
DIFFOUT
Voltages .............V
IN
– 2V to –0.3V for V
IN
< 7V
I
TH
Voltage ............................................... 2.7V to –0.3V
Peak Output Current <1µs(TGL1,2, BG1,2)
.................5A
INTV
CC
RMS Output Current ................................. 50mA
Operating Ambient Temperature
Range (Note 6)
......................................... –40°C to 85°C
Junction Temperature (Note 2)
............................. 125°C
Storage Temperature Range
................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
(G Package Only) .............................................. 300°C
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TOP VIEW
G PACKAGE
28-LEAD PLASTIC SSOP
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RUN/SS
SENSE1
+
SENSE1
–
EAIN
PLLFLTR
PLLIN
PHASMD
I
TH
SGND
V
DIFFOUT
V
OS
–
V
OS
+
SENSE2
–
SENSE2
+
CLKOUT
TG1
SW1
BOOST1
V
IN
BG1
EXTV
CC
INTV
CC
PGND
BG2
BOOST2
SW2
TG2
PGOOD
T
JMAX
= 125°C, θ
JA
= 95°C/W
32 31 30 29 28 27 26 25
9 10 11 12 13
TOP VIEW
UH PACKAGE
32-LEAD 5mm × 5mm PLASTIC QFN
14 15 16
17
18
19
20
21
22
23
24
8
7
6
5
4
3
2
1EAIN
PLLFLTR
PLLIN
PHASMD
I
TH
SGND
V
DIFFOUT
V
OS
–
BOOST1
V
IN
BG1
EXTV
CC
INTV
CC
PGND
BG2
BOOST2
NC
SENSE1
–
SENSE1
+
NC
RUN/SS
CLKOUT
TG1
SW1
V
OS
+
NC
SENSE2
–
SENSE2
+
PGOOD
TG2
SW2
NC
θ
JA
= 34°C/W
EXPOSED PAD IS GND, MUST BE SOLDERED TO PCB
PIN CONFIGURATION
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3729EG#PBF LTC3729EG#TRPBF LTC3729
28‑Lead Plastic SSOP –40°C to 85°C
LTC3729EUH#PBF LTC3729EUH#TRPBF 3729
32‑Lead (5mm × 5mm)Plastic QFN
–40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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/