LTC3521IFE Просмотр технического описания (PDF) - Linear Technology
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LTC3521IFE Datasheet PDF : 22 Pages
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LTC3521
Absolute Maximum Ratings (Note 1)
PVIN1, PVIN2, VIN Voltage.............................. –0.3V to 6V
SW1A, SW1B, SW2, SW3 Voltage
DC............................................................. –0.3V to 6V
Pulsed < 100ns.............................................–1V to 7V
Voltage, All Other Pins.................................. –0.3V to 6V
Operating Junction Temperature Range
(Notes 2, 5)............................................. –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
TOP VIEW
FB3 1
FB2 2
SHDN2 3
PGOOD3 4
PGOOD2 5
PGOOD1 6
VIN 7
GND 8
PWM 9
FB1 10
21
PGND1A
20 PVIN2
19 SW2
18 PGND2
17 SW3
16 VOUT1
15 SW1A
14 SW1B
13 PVIN1
12 SHDN1
11 SHDN3
FE PACKAGE
20-LEAD PLASTIC TSSOP
TJMAX = 150°C, θJA = 40°C/W (NOTE 4)
UNDERSIDE METAL INTERNALLY CONNECTED TO V– (PCB CONNECTION OPTIONAL)
EXPOSED PAD (PIN 21) IS PGND1A AND MUST BE SOLDERED TO PCB GROUND
TOP VIEW
24 23 22 21 20 19
SHDN2 1
PGOOD3 2
PGOOD2 3
PGOOD1 4
VIN 5
GND 6
25
PGND1A
18 PGND2
17 SW3
16 VOUT1
15 SW1A
14 SW1B
13 NC
7 8 9 10 11 12
UF PACKAGE
24-LEAD (4mm × 4mm) PLASTIC QFN
TJMAX = 125°C, θJA = 37°C/W
EXPOSED PAD (PIN 25) IS PGND1A AND MUST BE SOLDERED TO PCB GROUND
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3521EFE#PBF
LTC3521EFE#TRPBF
LTC3521FE
20-Lead Plastic TSSOP
–40°C to 125°C
LTC3521IFE#PBF
LTC3521IFE#TRPBF
LTC3521FE
20-Lead Plastic TSSOP
–40°C to 125°C
LTC3521EUF#PBF
LTC3521EUF#TRPBF
3521
24-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C
LTC3521IUF#PBF
LTC3521IUF#TRPBF
3521
24-Lead (4mm × 4mm) Plastic QFN –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/
3521fb
2
For more information www.linear.com/LTC3521
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