LT3475_15 datasheet(2/20 Pages) LINER

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LT3475/LT3475-1

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VIN Pin .........................................................(-0.3V), 40V

BOOST Pin Voltage ...................................................60V

BOOST Above SW Pin...............................................30V

OUT, LED, Pins (LT3475)...........................................15V

OUT, LED Pins (LT3475-1).........................................25V

PWM Pin...................................................................15V

VADJ Pin ......................................................................6V

VC, RT, REF Pins ..........................................................3V

SHDN Pin...................................................................VIN

Maximum Junction Temperature (Note 2)............. 125°C

Operating Temperature Range (Note 3)

LT3475E/LT3475E-1............................. –40°C to 85°C

LT3475I/LT3475I-1............................. –40°C to 125°C

Storage Temperature Range................... –65°C to 150°C

Lead Temperature Range (Soldering, 10 sec) ....... 300°C

(Note 1)

The ● denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN = 12V, VBOOST = 16V, VOUT = 4V unless otherwise noted (Note 3)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

●

3.7

Input Quiescent Current

Not Switching

Shutdown Current

SHDN = 0.3V, VBOOST = VOUT = 0V

0.01

μA

ELECTRICAL CHARACTERISTICS

ABSOLUTE

AXI U

RATI GS

FE PACKAGE

20-LEAD PLASTIC TSSOP

TOP VIEW

OUT1

LED1

BOOST1

SW1

VIN

SW2

BOOST2

LED2

OUT2

PWM1

VADJ1

VC1

REF

SHDN

GND

VC2

VADJ2

PWM2

TJMAX = 125°C, θJA = 30°C/W, θJC = 8°C/W

EXPOSED PAD (PIN 21) IS GROUND AND MUST

BE ELECTRICALLY CONNECTED TO THE PCB.

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3475EFE#PBF

LT3475EFE#TRPBF

LT3475EFE

20-Lead Plastic TSSOP

–40°C to 85°C

LT3475IFE#PBF

LT3475IFE#TRPBF

LT3475IFE

20-Lead Plastic TSSOP

–40°C to 125°C

LT3475EFE-1#PBF

LT3475EFE-1#TRPBF

LT3475FE-1

20-Lead Plastic TSSOP

–40°C to 85°C

LT3475IFE-1#PBF

LT3475IFE-1#TRPBF

LT3475FE-1

20-Lead Plastic TSSOP

–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/

PIN CONFIGURATION

ORDER INFORMATION

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