LT3748 Просмотр технического описания (PDF) - Linear Technology
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LT3748 Datasheet PDF : 34 Pages
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LT3748
Absolute Maximum Ratings
(Note 1)
VIN, RFB....................................................................100V
VIN to RFB...................................................................±5V
EN/UVLO.......................................................–0.3V, 100V
INTVCC.....................................................VIN + 0.3V, 20V
SS, VC, TC, RREF..........................................................6V
SENSE....................................................................... 0.4V
Operating Junction Temperature Range (Note 2)
LT3748E/LT3748I................................ –40°C to 125°C
LT3748H............................................. –40°C to 150°C
LT3748MP.......................................... –55°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
VIN 1
TOP VIEW
16 RFB
EN/UVLO 3
14 RREF
INTVCC 5
GATE 6
SENSE 7
GND 8
12 TC
11 VC
10 SS
9 GND
MS PACKAGE
16 (12)-LEAD PLASTIC MSOP
TJMAX = 150°C, θJA = 90°C/W
order information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3748EMS#PBF
LT3748EMS#TRPBF
3748
16-Lead Plastic MSOP
–40°C to 125°C
LT3748IMS#PBF
LT3748IMS#TRPBF
3748
16-Lead Plastic MSOP
–40°C to 125°C
LT3748HMS#PBF
LT3748HMS#TRPBF
3748
16-Lead Plastic MSOP
–40°C to 150°C
LT3748MPMS#PBF
LT3748MPMS#TRPBF 3748
16-Lead Plastic MSOP
–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.
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. VIN = 10V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range
l
5
100
V
Quiescent Current
Not Switching
VEN/UVLO = 0.2V
1.3
1.75
mA
0
1
µA
VIN Quiescent Current, INTVCC Overdriven VINTVCC = 10V
300
450
µA
INTVCC Voltage Range
l
4.5
20
V
INTVCC Pin Regulation Voltage
6.8
7
7.2
V
INTVCC Dropout
(VIN – VINTVCC), IINTVCC = 10mA, VIN = 5V
0.7
V
INTVCC Undervoltage Lockout
Falling Threshold
l
3.45
3.6
3.75
V
EN/UVLO Pin Threshold
EN/UVLO Pin Voltage Rising
l
1.19
1.223
1.25
V
EN/UVLO Pin Hysteresis Current
EN/UVLO = 1V
1.9
2.4
2.9
µA
Soft-Start Current
Soft-Start Threshold
Soft-Start Reset Current
VSS = 0.4V (Note 3)
5
µA
0.65
V
3
mA
3748fb
2
For more information www.linear.com/LT3748
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