LT3845 데이터 시트보기 (PDF) - Linear Technology
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LT3845 Datasheet PDF : 26 Pages
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LT3845
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Supply Voltage (VIN) ........................................65V
Boosted Supply Voltage (BOOST) .............................80V
Switch Voltage (SW) (Note 8)....................... 65V to –2V
Differential Boost Voltage
(BOOST to SW).....................................................24V
Bias Supply Voltage (VCC).........................................24V
SENSE+ and SENSE– Voltages ..................................40V
Differential Sense Voltage
(SENSE+ to SENSE–)................................... 1V to –1V
BURST_EN Voltage ...................................................24V
SYNC, VC, VFB, CSS, and SHDN Voltages ....................5V
SHDN Pin Currents ..................................................1mA
Operating Junction Temperature Range (Note 2)
LT3845E (Note 3)............................... –40°C to 125°C
LT3845I.............................................. –40°C to 125°C
LT3845MP.......................................... –55°C to 125°C
Storage Temperature.............................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec) .................. 300°C
PIN CONFIGURATION
TOP VIEW
VIN 1
SHDN 2
CSS 3
BURST_EN 4
VFB 5
VC 6
SYNC 7
fSET 8
16 BOOST
15 TG
14 SW
17
13 VCC
12 BG
11 PGND
10 SENSE+
9 SENSE–
FE PACKAGE
16-LEAD PLASTIC TSSOP
TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W
EXPOSED PAD (PIN 17) IS SGND, MUST BE SOLDERED TO PCB
TOP VIEW
VFB 1
VC 2
fSET 3
SGND 4
SENSE– 5
SENSE+ 6
PGND 7
BG 8
16 BURST_EN
15 CSS
14 SHDN
13 VIN
12 BOOST
11 TG
10 SW
9 VCC
N PACKAGE
16-LEAD PDIP
TJMAX = 125°C, θJA = 70°C/W, θJC = 34°C/W
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3845EFE#PBF
LT3845EFE#TRPBF
3845FE
16-Lead Plastic TSSOP
–40°C to 125°C
LT3845IFE#PBF
LT3845IFE#TRPBF
3845FE
16-Lead Plastic TSSOP
–40°C to 125°C
LT3845MPFE#PBF
LT3845MPFE#TRPBF
3845FE
16-Lead Plastic TSSOP
–55°C to 125°C
LT3845EN#PBF
LT3845EN#TRPBF
3845N
16-Lead PDIP
–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.
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/
3845fd
2
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