LT3753EFE ......................................... –40°C to 125°C
LT3753IFE .......................................... –40°C to 125°C
LT3753HFE ........................................ –40°C to 150°C
LT3753MPFE ..................................... –55°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 Sec) .................. 300°C
OVLO 10
T
AO
11
T
AS
12
T
OS
13
T
BLNK
14
NC 15
NC 16
SS2 17
GND 18
PGND 19
FE PACKAGE
VARIATION: FE38(31)
38-LEAD PLASTIC TSSOP
θ
JA
= 25°C/W
EXPOSED PAD (PIN 39) IS PGND AND GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3753EFE#PBF
LT3753IFE#PBF
LT3753HFE#PBF
LT3753MPFE#PBF
TAPE AND REEL
LT3753EFE#TRPBF
LT3753IFE#TRPBF
LT3753HFE#TRPBF
LT3753MPFE#TRPBF
PART MARKING*
LT3753FE
LT3753FE
LT3753FE
LT3753FE
PACKAGE DESCRIPTION
38-Lead Plastic TSSOP
38-Lead Plastic TSSOP
38-Lead Plastic TSSOP
38-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°C to 150°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on nonstandard 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/
3753fa
For more information
www.linear.com/LT3753
3
LT3753
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 12V, UVLO_V
SEC
= 2.5V.
PARAMETER
Operational Input Voltage
V
IN(ON)
V
IN(OFF)
V
IN(ON/OFF)
Hysteresis
V
IN
Quiescent Current
UVLO_V
SEC
Micropower Threshold (V
SD
)
V
IN
Shutdown Current (Micropower)
UVLO_V
SEC
Threshold (V
SYS_UV
)
V
IN
Shutdown Current (After Soft-Stop)
UVLO_V
SEC
(ON) Current
UVLO_V
SEC
(OFF) Current
Hysteresis Current
With One-Shot Communication Current
OVLO (Rising) (No Switching, Reset SS1)
OVLO (Falling) (Restart SS1)
OVLO Hysteresis
OVLO Pin Current (Note 10)
Oscillator
Frequency: f
OSC
= 100kHz
Frequency: f
OSC
= 300kHz
Frequency: f
OSC
= 500kHz
f
OSC
Line Regulation
Frequency and D
VSEC
Foldback Ratio (Fold)
SYNC Input High Threshold
SYNC Input Low Threshold
SYNC Pin Current
SYNC Frequency/Programmed f
OSC
Linear Regulator (INTV
CC
)
INTV
CC
Regulation Voltage
Dropout (V
IN
-INTV
CC
)
INTV
CC
UVLO(+)
INTV
CC
UVLO(–)
INTV
CC
UVLO Hysteresis
INTV
CC
OVLO(+)
INTV
CC
OVLO(–)
INTV
CC
OVLO Hysteresis
INTV
CC
Current Limit
INTV
CC
= 0V
INTV
CC
= 8.75V
l
l
l
ELECTRICAL CHARACTERISTICS
CONDITIONS
l
l
MIN
8.5
TYP
7.75
7.42
MAX
100
8.4
0.55
7.5
0.6
40
1.320
220
UNITS
V
V
V
V
mA
V
µA
V
µA
µA
0.11
0.2
1.180
0.33
5.9
0.4
20
1.250
165
0
FB = 1.5V (Not Switching)
I
VIN
< 20µA
UVLO_V
SEC
= 0.2V
l
l
UVLO_V
SEC
= 1V
UVLO_V
SEC
= V
SYS_UV
+ 50mV
UVLO_V
SEC
= V
SYS_UV
– 50mV
l
(Note 13)
l
4.0
1.220
23
5
25
1.250
1.215
35
5
0.9
5
6.0
1.280
47
100
100
106
321
530
0.1
1.8
µA
µA
V
V
mV
nA
mA
nA
kHz
kHz
kHz
%/V
V
V
µA
OVLO = 0V
OVLO = 1.5V (SS1 = 2.7V)
OVLO = 1.5V (SS1 = 1.0V)
R
T
= 82.5k
R
T
= 24.9k
R
T
= 14k
R
T
= 24.9k, 8.5V < V
IN
< 100V
SS1 = V
SSACT
+ 25mV, SS2 = 2.7V
(Note 4)
(Note 4)
SYNC = 6V
1.0
9.4
V
IN
= 8.75V, I
INTVCC
= 10mA
(Start Switching)
(Stop Switching)
0.1
(Stop Switching)
(Start Switching)
15.9
15.4
0.38
9.5
19
l
l
l
94
279
470
100
300
500
0.05
4
1.2
0.6
1.025
75
1.25
10
0.6
7
6.8
0.2
16.5
16
0.5
13
27
7.4
7.2
0.3
17.2
16.7
0.67
17
32
10.4
kHz/kHz
V
V
V
V
V
V
V
V
mA
mA
4
3753fa
For more information
www.linear.com/LT3753
LT3753
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
便携式数字数据采集系统（PDDAS）使用了LabVIEW实时模块和PXI，以控制风洞测试和采集记录来自128个不同通道的空气压力数据 "通过LabVIEW实时模块，可以在各种操作情况下获得采集空气压力数据及向风洞提供反馈控制信号所需的确定性响应时间。" – Dave Scheibenhoffer, G Systems 挑战: 用一个可采集、分析和存储来自下一代喷气式战斗机引擎设计的动...[详细]
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