MBRS340 データシートの表示（PDF） - Linear Technology
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MBRS340 Datasheet PDF : 24 Pages
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LT3975
ABSOLUTE MAXIMUM RATINGS
(Note 1)
VIN, EN Voltage (Note 3)............................................42V
BOOST Pin Voltage....................................................55V
BOOST Pin Above SW Pin..........................................30V
FB, RT, SYNC, SS Voltage............................................6V
PG Voltage.................................................................30V
OUT Voltage...............................................................16V
Operating Junction Temperature Range (Note 2)
LT3975E.............................................. –40°C to 125°C
LT3975I.............................................. –40°C to 125°C
LT3975H............................................. –40°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec).................... 300°C
PIN CONFIGURATION
FB 1
SS 2
OUT 3
BOOST 4
SW 5
SW 6
SW 7
NC 8
TOP VIEW
17
GND
16 SYNC
15 PG
14 RT
13 EN
12 VIN
11 VIN
10 VIN
9 NC
MSE PACKAGE
16-LEAD PLASTIC MSOP
θJA = 40°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3975EMSE#PBF
LT3975EMSE#TRPBF 3975
16-Lead Plastic MSOP
–40°C to 125°C
LT3975IMSE#PBF
LT3975IMSE#TRPBF
3975
16-Lead Plastic MSOP
–40°C to 125°C
LT3975HMSE#PBF
LT3975HMSE#TRPBF 3975
16-Lead Plastic MSOP
–40°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 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/
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2)
PARAMETER
Minimum Input Voltage
Dropout Comparator Threshold
Dropout Comparator Threshold Hysteresis
Quiescent Current from VIN
FB Pin Current
Feedback Voltage
FB Voltage Line Regulation
Switching Frequency
Minimum Switch On-Time
Minimum Switch Off-Time (Note 4)
CONDITIONS
(Note 3)
(VIN – OUT) Falling
VEN Low
VEN High, VSYNC Low
VEN High, VSYNC Low
VFB = 1.5V
4.3V < VIN < 40V (Note 3)
RT = 11.8k
RT = 41.2k
RT = 294k
MIN TYP MAX
l
4
4.3
430
500
570
25
0.7
1.3
1.6
2.7
l
30
l
0.1
12
1.183 1.197 1.212
l 1.173 1.197 1.222
0.0003 0.01
1.8
2.25
2.7
0.8
1
1.2
160
200
240
105
150
200
UNITS
V
mV
mV
µA
µA
µA
nA
V
V
%/V
MHz
MHz
kHz
ns
ns
3975f
2
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