LT3795 查看數據表（PDF） - Linear Dimensions Semiconductor
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LT3795 Datasheet PDF : 28 Pages
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LT3795
Absolute Maximum Ratings
(Note 1)
VIN ........................................................................... 110V
EN/UVLO.................................................................. 110V
ISP, ISN.................................................................... 110V
TG, GATE...............................................................Note 2
IVINP, IVINN............................................................. 110V
VIN - IVINN.................................................... –0.3V to 4V
INTVCC (Note 3)......................................8.6V, VIN + 0.3V
PWM, SHORTLED, OPENLED......................................12V
FB, RAMP, OVLO..........................................................8V
CTRL1, CTRL2............................................................15V
SENSE.......................................................................0.5V
ISMON, IVINCOMP......................................................5V
VC, VREF, SS.................................................................3V
RT................................................................................2V
Operating Junction Temperature Range (Note 4)
LT3795E/LT3795I................................... –40 to 125°C
LT3795H................................................. –40 to 150°C
Storage Temperature Range.......................–65 to 150°C
Pin Configuration
ISP 1
ISN 2
TG 3
GND 4
ISMON 5
CTRL2 6
FB 7
VC 8
CTRL1 9
VREF 10
SS 11
RT 12
RAMP 13
PWM 14
TOP VIEW
29
GND
28 IVINCOMP
27 IVINP
26 IVINN
25 OVLO
24 EN/UVLO
23 VIN
22 GND
21 GND
20 INTVCC
19 GATE
18 SENSE
17 GND
16 OPENLED
15 SHORTLED
FE PACKAGE
28-LEAD PLASTIC TSSOP
TJMAX = 150°C, θJA = 30°C/W, θJC = 10°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3795EFE#PBF
LT3795EFE#TRPBF
LT3795FE
28-Lead Plastic TSSOP
–40°C to 125°C
LT3795IFE#PBF
LT3795IFE#TRPBF
LT3795FE
28-Lead Plastic TSSOP
–40°C to 125°C
LT3795HFE#PBF
LT3795HFE#TRPBF
LT3795FE
28-Lead Plastic TSSOP
–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, VIN = 24V, EN/UVLO = 24V, CTRL1 = CTRL2 = 2V, PWM = 5V, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
VIN Minimum Operating Voltage
VIN Shutdown IQ
VIN Tied to INTVCC
EN/UVLO = 0V, PWM = 0V
EN/UVLO = 1.15V, PWM = 0V
4.5
V
10
µA
22
µA
VIN Operating IQ (Not Switching)
VREF Voltage
VREF Pin Line Regulation
VREF Pin Load Regulation
SENSE Current Limit Threshold
RT = 82.5k to GND, FB = 1.5V
–100µA ≤ IREF ≤ 10µA
4.5V < VIN < 110V
–100µA ≤ IREF ≤ 0µA
l 1.97
l
100
2.9
2.015
1.5
10
117
3.5
mA
2.06
V
m%/V
m%/µA
125
mV
3795f
2
For more information www.linear.com/LT3795
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