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LT3503

3503f

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

ORDER PART NUMBER

DCB PART MARKING

LT3503EDCB

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

TJMAX = 125°C, θJA = 64°C/ W

EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB

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/

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN Operating Range

3.6

Undervoltage Lockout

3.0

3.4

3.6

Feedback Voltage

●

765

780

795

FB Pin Bias Current

VFB = Measured VREF (Note 4)

●

150

Quiescent Current

Not Switching

1.9

2.6

Quiescent Current in Shutdown

VSHDN = 0V

0.01

µA

Reference Line Regulation

VIN = 5V to 20V

0.007

%/V

Switching Frequency

VFB = 0.7V

2.0

2.2

2.4

MHz

VFB = 0V

kHz

Maximum Duty Cycle

●

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)

ELECTRICAL CHARACTERISTICS

Consult LTC Marketing for parts specified with wider operating temperature ranges.

LCGW

TOP VIEW

SHDN

VIN

GND

BOOST

DCB PACKAGE

6-LEAD (2mm

´ 3mm) PLASTIC DFN

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