LT3435IFE datasheet(2/24 Pages) LINER

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LT3435

3435fa

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VSHDN

SHDN Threshold

1.15

1.3

1.45

ISHDN

SHDN Input Current

SHDN = 12V

●

520

µA

Minimum Input Voltage (Note 3)

●

2.4

IVINS

Supply Shutdown Current

SHDN = 0V, BOOST = 0V, FB/PGFB = 0V

0.1

µA

Supply Sleep Current (Note 4)

BIAS = 0V, FB = 1.35V

●

170

250

µA

FB = 1.35V

●

µA

IVIN

Supply Quiescent Current

BIAS = 0V, FB = 1.15V

3.3

BIAS = 5V, FB = 1.15V

2.6

Minimum BIAS Voltage (Note 5)

●

2.7

3.1

IBIASS

BIAS Sleep Current (Note 4)

●

125

180

µA

IBIAS

BIAS Quiescent Current

SYNC = 3.3V

700

900

µA

Minimum Boost Voltage (Note 6)

ISW = 1.5A

1.8

Input Boost Current (Note 7)

ISW = 3A

VREF

Reference Voltage (VREF)

3.3V < VVIN < 60V

●

1.225

1.25

1.275

IFB

FB Input Bias Current

200

EA Voltage Gain (Note 8)

900

V/V

EA Voltage gm

dI(VC)= ±10µA

400

650

900

µMho

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

ELECTRICAL CHARACTERISTICS

(Note 1)

VIN, SHDN, BIAS, PGOOD, SW ............................... 60V

BOOST Pin Above SW ............................................ 35V

BOOST Pin Voltage ................................................. 68V

SYNC, CSS, PGFB, FB................................................ 6V

Operating JunctionTemperature Range

(Note 2) ........................................... – 40

°C to 125°C

Storage Temperature Range ................. – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec).................. 300

°C

The

● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TJ = 25°C. VIN = 12V, SHDN = 12V, BIAS = 5V, FB/PGFB = 1.25V, CSS/SYNC = 0V

unless otherwise noted.

TJMAX = 125°C, θJA = 45°C/W, θJC(PAD) = 10°C/W

EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO GND (PIN 8)

FE PART MARKING

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

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/

ORDER PART NUMBER

LT3435EFE

LT3435IFE

3435EFE

3435IFE

FE PACKAGE

16-LEAD PLASTIC TSSOP

TOP VIEW

VIN

BOOST

GND

PGOOD

SHDN

SYNC

PGFB

BIAS

CSS

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