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LTC3520EUF データシートの表示(PDF) - Linear Technology

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LTC3520EUF Datasheet PDF : 24 Pages
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LTC3520
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PVIN1, PVIN2, PVIN3, SVIN Voltage................ –0.3V to 6V
SW1A, SW1B, SW2 Voltage
DC............................................................ –0.3V to 6V
Pulsed <100ns ............................................ –1V to 7V
Voltage, All Other Pins ................................. –0.3V to 6V
Operating Junction Temperature Range
(Note 2).................................................. –40°C to 125°C
Maximum Junction Temperature (Note 5) ............ 125°C
Storage Temperature Range .................. –65°C to 150°C
PIN CONFIGURATION
TOP VIEW
24 23 22 21 20 19
SVIN 1
AOUT 2
AIN 3
RT 4
PWM1 5
SD1 6
18 FB1
17 SS1
16 SGND
25
15 VC1
14 FB2
13 SS2
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
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING*
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC3520EUF#PBF
LTC3520EUF#TRPBF
3520
24-Lead (4mm × 4mm) Plastic QFN –40°C to 85°C
LTC3520IUF#PBF
LTC3520IUF#TRPBF
3520
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.
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
junction temperature range, otherwise specifications are at TA = 25°C, SVIN = PVIN1 = PVIN2 = PVIN3 = 3.6V, VOUT1 = 3.3V, RT = 54.9k,
unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Input Voltage
l 2.2
5.5
V
Quiescent Current in Shutdown
VSD1 = VSD2 = VSD3 = 0V
LTC3520E
LTC3520I
l
0.01
1
μA
l
0.5
4
μA
Undervoltage Lockout
Burst Mode Quiescent Current, Both Converters
Oscillator Frequency
Buck Converter
SVIN Rising
VFB1 = VFB2 = 0.88V, VSD3 = 0V
RT = 54.9k
2
2.2
V
55
μA
l 0.8
1
1.2
MHz
PMOS Switch Resistance
0.32
Ω
NMOS Switch Resistance
0.18
Ω
NMOS Switch Leakage
PMOS Switch Leakage
VSW2 = 5V, SVIN = PVIN1 = PVIN2 = PVIN3 = 5V
VSW2 = 0V, SVIN = PVIN1 = PVIN2 = PVIN3 = 5V
0.1
5
μA
0.1
10
μA
3520fa
2

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