参数资料
型号: LTC3521IFE#TRPBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: SWITCHING REGULATOR, 1350 kHz SWITCHING FREQ-MAX, PDSO20
封装: 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20
文件页数: 12/22页
文件大小: 1476K
代理商: LTC3521IFE#TRPBF
LTC3521
2
3521fa
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS
PVIN1, PVIN2, VIN Voltage ............................. –0.3V to 6V
SW1A, SW1B, SW2, SW3 Voltage
DC............................................................ –0.3V to 6V
Pulsed < 100ns........................................... –1V to 7V
(Note 1)
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/
ORDER INFORMATION
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
FE PACKAGE
20-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
9
10
TOP VIEW
20
19
18
17
16
15
14
13
12
11
FB3
FB2
SHDN2
PGOOD3
PGOOD2
PGOOD1
VIN
GND
PWM
FB1
PVIN2
SW2
PGND2
SW3
VOUT1
SW1A
SW1B
PVIN1
SHDN1
SHDN3
21
PGND1A
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
24 23 22 21 20 19
7
8
9
TOP VIEW
25
PGND1A
UF PACKAGE
24-LEAD (4mm
× 4mm) PLASTIC QFN
10 11 12
6
5
4
3
2
1
13
14
15
16
17
18
SHDN2
PGOOD3
PGOOD2
PGOOD1
VIN
GND
PGND2
SW3
VOUT1
SW1A
SW1B
NC
FB2
FB3
PV
IN2
PGND1A
SW2
NC
PW
M
FB1
SHDN3
SHDN1
PV
IN1
PGND1B
TJMAX = 125°C, θJA = 37°C/W
EXPOSED PAD (PIN 25) IS PGND1A AND MUST BE SOLDERED TO PCB GROUND
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