LT3504IUFD データシートの表示（PDF） - Linear Technology
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LT3504IUFD Datasheet PDF : 24 Pages
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LT3504
Absolute Maximum Ratings
(Note 1)
EN/UVLO Pin..............................................................40V
EN/UVLO Pin Above VIN Pin.........................................5V
VIN Pin.......................................................................40V
SKY Pin......................................................................46V
SW5 Pin.....................................................................47V
RUN/SS Pins................................................................6V
FB Pins.........................................................................6V
RT/SYNC Pin................................................................6V
PG Pin........................................................................25V
Operating Junction Temperature Range (Notes 2, 8)
LT3504EUFD........................................... –40°C to 125°C
LT3504IUFD............................................ –40°C to 125°C
Storage Temperature Range................... –65°C to 150°C
Pin Configuration
TOP VIEW
28 27 26 25 24 23
DA2 1
22 FB2
SW2 2
21 FB3
DA3 3
20 FB1
SW3 4
SW1 5
29
19 FB4
GND
18 GND
DA1 6
17 RT/SYNC
SW4 7
16 EN/UVLO
DA4 8
15 RUN/SS3
9 10 11 12 13 14
UFD PACKAGE
28-LEAD (4mm × 5mm) PLASTIC QFN
θJA = 43°C/W
EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB
Order Information
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
LT3504EUFD#PBF
LT3504EUFD#TRPBF
3504
28-Lead (4mm × 5mm) Plastic QFN
LT3504IUFD#PBF
LT3504IUFD#TRPBF
3504
28-Lead (4mm × 5mm) Plastic QFN
Consult LTC Marketing for parts specified with wider operating temperature ranges.
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/
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
Electrical Characteristics The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 12V unless otherwise noted.
SYMBOL
CONDITIONS
MIN
TYP
MAX
EN/UVLO Threshold Voltage
Rising
l 1.2
1.44
1.6
EN/UVLO Threshold Voltage Hysteresis
110
EN/UVLO Threshold Current Hysteresis
VEN/UVLO = Measured Rising Threshold – 50mV
1.3
(Note 3)
Internal VIN Undervoltage Lockout
Quiescent Current (VIN) in Shutdown
Quiescent Current (VIN)
Quiescent Current (VIN)
Quiescent Current (SKY)
VEN/UVLO = 0V
VEN/UVLO = 1V (Note 4)
VEN/UVLO = 1.5V, VRUN/SS(1,2,3,4) = Open,
VFB(1,2,3,4) = 0.9V, VSKY = 17V
VEN/UVLO = 1.5V, VRUN/SS(1,2,3,4) = Open,
VFB(1,2,3,4) = 0.9V, VSKY = 17V
2.4
2.9
3.2
0.01
2
4
10
2.7
4.4
UNITS
V
mV
µA
V
µA
µA
mA
mA
3504fa
2
For more information www.linear.com/LT3504
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