LT3570(RevA) Просмотр технического описания (PDF) - Linear Technology
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LT3570 Datasheet PDF : 20 Pages
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LT3570
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN1, VIN2, VIN3, VBIAS Voltage ..................................40V
BOOST Voltage .........................................................60V
BOOST Pin Above SW2.............................................25V
NPN_DRV Voltage.......................................................8V
SW1 Voltage .............................................................40V
SHDN1, SHDN2, SHDN3 Voltage ..............................40V
SYNC, RT Voltage........................................................3V
SS1, SS2 Voltage........................................................3V
FB1, FB2, FB3 Voltage...............................................10V
VC1, VC2 Voltage..........................................................3V
Maximum Junction Temperature........................... 125°C
Operating Temperature Range (Note 2).. –40°C to 125°C
Storage Temperature Range
TSSOP ............................................... –65°C to 150°C
QFN.................................................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)
TSSOP Only ...................................................... 300°C
PIN CONFIGURATION
TOP VIEW
24 23 22 21 20 19
VIN2 1
VIN2 2
SW2 3
SW1 4
GND 5
GND 6
18 VC2
17 SS2
16 GND
25
15 RT
14 SYNC
13 SHDN3
7 8 9 10 11 12
UF PACKAGE
24-LEAD (4mm s 4mm) PLASTIC QFN
TJMAX = 125°C, θJA = 37°C/W
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
TOP VIEW
FB1 1
SHDN1 2
SHDN2 3
SHDN3 4
20 VC1
19 SS1
18 VIN1
17 GND
SYNC 5
RT 6
SS2 7
VC2 8
16 SW1
21
15 SW2
14 VIN2
13 BOOST
FB2 9
FB3 10
12 VIN3
11 NPN_DRV
FE PACKAGE
20-LEAD PLASTIC TSSOP
TJMAX = 125°C, θJA = 38°C/W
EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LT3570EUF#PBF
LT3570EUF#TRPBF
3570
24-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C
LT3570IUF#PBF
LT3570IUF#TRPBF
3570
24-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C
LT3570EFE#PBF
LT3570EFE#TRPBF
LT3570FE
20-Lead Plastic TSSOP
–40°C to 125°C
LT3570IFE#PBF
LT3570IFE#TRPBF
LT3570FE
20-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.
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/
3570fa
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