LT3575 查看數據表（PDF） - Linear Technology
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LT3575 Datasheet PDF : 24 Pages
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LT3575
ABSOLUTE MAXIMUM RATINGS
SW ............................................................................60V
VIN, SHDN/UVLO, RFB, BIAS.....................................40V
SS, VC, TC, RREF, RILIM ..............................................5V
Maximum Junction Temperature .......................... 125°C
Operating Junction Temperature Range (Note 2)
LT3575E, LT3575I.............................. –40°C to 125°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
NC 1
VIN 2
SW 3
SW 4
BIAS 5
SHDN/UVLO 6
SS 7
RILIM 8
16 NC
15 NC
14 GND
17
13 TEST
GND
12 TC
11 RREF
10 RFB
9 VC
FE PACKAGE
16-LEAD PLASTIC TSSOP
TJMAX = 125°C, θJA = 38°C/W, θJC = 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE CONNECTED TO GND
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3575EFE#PBF
LT3575EFE#TRPBF
3575FE
16-Lead Plastic TSSOP
–40°C to 125°C
LT3575IFE#PBF
LT3575IFE#TRPBF
3575FE
16-Lead Plastic TSSOP
–40°C to 125°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 = 12V, unless otherwise noted.
PARAMETER
Input Voltage Range
Quiescent Current
Soft-Start Current
SHDN/UVLO Pin Threshold
SHDN/UVLO Pin Hysteresis Current
Soft-Start Threshold
Maximum Switching Frequency
Switch Current Limit
Minimum Current Limit
Switch VCESAT
RREF Voltage
RREF Voltage Line Regulation
RREF Pin Bias Current
CONDITIONS
SS = 0V
VSHDN/UVLO = 0V
SS = 0.4V
UVLO Pin Voltage Rising
VUVLO = 1V
RILIM = 10k
VC = 0V
ISW = 0.5A
VIN = 3V
3V < VIN < 40V
(Note 3)
MIN TYP MAX UNITS
l
3
40
V
4.5
mA
0
1
μA
7
μA
l 1.15 1.22 1.32
V
2.2
2.8
3.2
μA
0.7
V
1000
kHz
2.8
3.5
4.2
A
400
mA
75
125
mV
1.21 1.23 1.25
V
l 1.20
1.26
0.01 0.03
%/V
l
100
600
nA
3575f
2
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