LT3503 Просмотр технического описания (PDF) - Linear Technology
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LT3503 Datasheet PDF : 20 Pages
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LT3503
ABSOLUTE AXI U RATI GS
(Note 1)
Input Voltage (VIN) .................................................. 20V
BOOST Pin Voltage .................................................. 40V
BOOST Pin Above SW Pin ....................................... 20V
SHDN Pin ................................................................ 20V
FB Voltage ................................................................. 6V
Operating Temperature Range (Note 2) ... –40°C to 85°C
Maximum Junction Temperature .......................... 125°C
Storage Temperature Range ................. – 65°C to 150°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
FB 1
6 SHDN
GND 2
7
5 VIN
BOOST 3
4 SW
DCB PACKAGE
6-LEAD (2mm ´ 3mm) PLASTIC DFN
TJMAX = 125°C, θJA = 64°C/ W
EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER DCB PART MARKING
LT3503EDCB
LCGW
Order Options Tape and Reel: Add #TR Lead Free: Add #PBF
Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VIN = 12V, VBOOST = 17V, unless otherwise noted. (Note 2)
PARAMETER
VIN Operating Range
Undervoltage Lockout
Feedback Voltage
FB Pin Bias Current
Quiescent Current
Quiescent Current in Shutdown
Reference Line Regulation
Switching Frequency
Maximum Duty Cycle
CONDITIONS
VFB = Measured VREF (Note 4)
Not Switching
VSHDN = 0V
VIN = 5V to 20V
VFB = 0.7V
VFB = 0V
MIN TYP MAX
3.6
20
3.0
3.4
3.6
●
765
780
795
●
50
150
1.9
2.6
0.01
2
0.007
2.0
2.2
2.4
36
●
76
81
UNITS
V
V
mV
nA
mA
µA
%/V
MHz
kHz
%
3503f
2
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