LT3798IMSE-PBF Просмотр технического описания (PDF) - Linear Technology
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LT3798IMSE-PBF Datasheet PDF : 20 Pages
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LT3798
ABSOLUTE MAXIMUM RATINGS
(Note 1)
EN/UVLO....................................................................30V
VIN.............................................................................42V
INTVCC....................................................................... 12V
CTRL1, CTRL2, CTRL3.................................................4V
FB, VREF, COMP+.........................................................3V
VC, OVP, COMP–..........................................................4V
SENSE....................................................................... 0.4V
VIN_SENSE..................................................................1mA
DCM........................................................................±3mA
Operating Temperature Range (Note 2)
LT3798E/LT3798I................................... –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
CTRL1 1
16 VIN_SENSE
CTRL2 2
15 SENSE
CTRL3 3
14 GATE
VREF 4
17
13 INTVCC
OVP 5
GND
12 EN/UVLO
COMVPC+
6
7
COMP– 8
11 VIN
10 DCM
9 FB
MSE PACKAGE
16-LEAD PLASTIC MSOP
θJA = 50°C/W, θJC = 10°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
LT3798EMSE#PBF
LT3798EMSE#TRPBF 3798
16-Lead Plastic MSOP
–40°C to 125°C
LT3798IMSE#PBF
LT3798IMSE#TRPBF
3798
16-Lead Plastic MSOP
–40°C to 125°C
LT3798HMSE#PBF
LT3798HMSE#TRPBF 3798
16-Lead Plastic MSOP
–40°C to 150°C
LT3798MPMSE#PBF
LT3798MPMSE#TRPBF 3798
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 = 18V, INTVCC = 11V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input Voltage Range
10
38
V
VIN Quiescent Current
VIN Quiescent Current, INTVCC Overdriven
VIN Shunt Regulator Voltage
VIN Shunt Regulator Current Limit
INTVCC Quiescent Current
EN/UVLO Pin Threshold
VEN/UVLO = 0.2V
VEN/UVLO = 1.5V, Not Switching
VINTVCC = 11V
I = 1mA
VEN/UVLO = 0.2V
VEN/UVLO = 1.5V, Not Switching
EN/UVLO Pin Voltage Rising
45
60
70
µA
70
µA
60
µA
40
V
8
mA
12.5 15.5 17.5
µA
1.8
2.2
2.7
mA
l 1.21 1.25 1.29
V
EN/UVLO Pin Hysteresis Current
EN/UVLO=1V
8
10
12
µA
VIN_SENSE Threshold
VREF Voltage
Turn Off
0µA Load
200µA Load
27
µA
l 1.97
2.0
2.03
V
l 1.95 1.98 2.03
V
CTRL1/CTRL2/CTRL3 Pin Bias Current
CTLR1/CTRL2/CTRL3 = 1V
±30
nA
3798fa
2
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