LT3724
2
3724fd
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (V
IN
) ......................... 65V to –0.3V
Boosted Supply Voltage (BOOST)
.............. 80V to –0.3V
Switch Voltage (SW)(Note 8)
........................ 65V to –1V
Differential Boost Voltage
(BOOST to SW)
...................................... 24V to –0.3V
Bias Supply Voltage (V
CC
) .......................... 24V to –0.3V
SENSE
+
and SENSE
–
Voltages ................... 40V to –0.3V
(SENSE
+
to SENSE
–
) ................................... 1V to –1V
BURST_EN Voltage
.................................... 24V to –0.3V
V
C
, V
FB
, C
SS
, and SHDN Voltages................. 5V to –0.3V
C
SS
and SHDN Pin Currents .....................................1mA
Operating Junction Temperature Range (Notes 2, 3)
LT3724E
............................................. –40°C to 125°C
LT3724I
.............................................. –40°C to 125°C
LT3724MP.......................................... –55°C to 125°C
Storage Temperature
.............................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
.................. 300°C
(Note 1)
FE PACKAGE
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
TOP VIEW
16
15
14
13
12
11
10
9
V
IN
NC
SHDN
C
SS
BURST_EN
V
FB
V
C
SGND
BOOST
TG
SW
NC
V
CC
PGND
SENSE
+
SENSE
–
17
T
JMAX
= 125°C, θ
JA
= 40°C/W, θ
JC
= 10°C/W
EXPOSED PAD IS SGND (PIN 17), MUST BE SOLDERED TO PCB
ELECTRICAL CHARACTERISTICS
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3724EFE#PBF LT3724EFE#TRPBF 3724EFE 16-Lead Plastic TSSOP –40°C to 125°C
LT3724IFE#PBF LT3724IFE#TRPBF 3724IFE 16-Lead Plastic TSSOP –40°C to 125°C
LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3724MPFE LT3724MPFE#TR 3724MPFE 16-Lead Plastic TSSOP –55°C to 125°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/
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 20V, V
CC
= BOOST = BURST_EN = 10V, SHDN = 2V,
SENSE
–
= SENSE
+
= 10V, SGND = PGND = SW = 0V, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Operating Voltage Range (Note 4)
Minimum Start Voltage
UVLO Threshold (Falling)
UVLO Threshold Hysteresis
l
l
l
4
7.5
3.65
3.8
670
60
3.95
V
V
V
mV
I
VIN
V
IN
Supply Current
V
IN
Burst Mode Current
V
IN
Shutdown Current
V
CC
> 9V
V
BURST_EN
= 0V, V
FB
= 1.35V
V
SHDN
= 0V
20
20
10
15
µA
µA
µA
