LT3512 Просмотр технического описания (PDF) - Linear Technology
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LT3512 Datasheet PDF : 24 Pages
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LT3512
ABSOLUTE MAXIMUM RATINGS
(Note 1)
SW (Note 4) ............................................................150V
VIN, EN/UVLO..........................................................100V
RFB............................................................100V, VIN ±6V
BIAS...................................................................VIN, 20V
RREF,TC, VC .................................................................6V
Operating Junction Temperature Range (Note 2)
LT3512E, LT3512I .............................. –40°C to 125°C
LT3512H ............................................ –40°C to 150°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATION
EN/UVLO 1
TOP VIEW
16 SW
VIN 3
14 RFB
GND 5
BIAS 6
NC 7
GND 8
12 RREF
11 TC
10 VC
9 GND
MS PACKAGE
16(12)-LEAD PLASTIC MSOP
θJA = 90°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3512EMS#PBF
LT3512EMS#TRPBF
3512
16-Lead Plastic MSOP
–40°C to 125°C
LT3512IMS#PBF
LT3512IMS#TRPBF
3512
16-Lead Plastic MSOP
–40°C to 125°C
LT3512HMS#PBF
LT3512HMS#TRPBF
3512
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.
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 = 24V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input Voltage Range
Quiescent Current
EN/UVLO Pin Threshold
VIN = BIAS
Not Switching
VEN/UVLO = 0.2V
EN/UVLO Pin Voltage Rising
l
6
4.5
100
V
15
V
3.5
4.5
mA
0
μA
l 1.15 1.21 1.27
V
EN/UVLO Pin Current
Maximum Switching Frequency
VEN/UVLO =1.1V
VEN/UVLO =1.4V
2.0
2.6
3.3
μA
0
μA
650
kHz
Minimum Switching Frequency
40
kHz
Maximum Current Limit
420
600
800
mA
Minimum Current Limit
80
120 150
mA
Switch VCESAT
RREF Voltage
ISW = 200mA
0.5
V
1.18 1.20 1.215
V
l 1.17
1.23
V
RREF Voltage Line Regulation
RREF Pin Bias Current
Error Amplifier Voltage Gain
6V < VIN < 100V
(Note 3)
0.01 0.03
%/V
l
80
400
nA
150
V/V
Error Amplifier Transconductance
∆I = 2μA
140
μmhos
3512f
2
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