LT3437IDD datasheet(2/24 Pages) LINER

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LT3437

3437f

LT3437EFE

LT3437IFE

ORDER PART NUMBER

LT3437EDD

LT3437IDD

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

DD PART MARKING

ORDER PART NUMBER

FE PART MARKING

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/

(Note 1)

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

VIN, SHDN 100ms Transient, <15% Duty Cycle ....... 80V

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

BOOST Pin Voltage Operating ................................. 75V

BOOST Pin 100ms Transient, <15% Duty Cycle ...... 85V

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

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

ELECTRICAL CHARACTERISTICS 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 = 1.25V,

CSS/SYNC = 0V unless otherwise noted.

θJA = 45°C/W, θJC(PAD) = 10°C/W

EXPOSED PAD IS GND (PIN 11)

MUST BE SOLDERED TO GND (PIN 4)

TOP VIEW

DD PACKAGE

10-LEAD (3mm

× 3mm) PLASTIC DFN

SHDN

SYNC

BIAS

VIN

BST

GND

CSS

Operating Junction Temperature Range

LT3437EDD (Note 2) ....................... – 40

°C to 125°C

LT3437IDD (Note 2) ........................ – 40

°C to 125°C

LT3437EFE (Note 2) ........................ – 40

°C to 125°C

LT3437IFE (Note 2) ......................... – 40

°C to 125°C

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

°C to 125°C

FE PACKAGE

16-LEAD PLASTIC TSSOP

TOP VIEW

VIN

BOOST

GND

SHDN

SYNC

BIAS

CSS

θJA = 45°C/W, θJC(PAD) = 10°C/W

EXPOSED PAD IS GND (PIN 17)

MUST BE SOLDERED TO GND (PIN 8)

3437EFE

3437IFE

LBDJ

LBDK

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VSHDN

SHDN Threshold

●

1.15

1.3

1.45

ISHDN

SHDN Input Current

SHDN = 12V

●

530

µA

Minimum Input Voltage (Note 3)

●

2.5

IVINS

Supply Shutdown Current

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

0.1

µA

Supply Sleep Current (Note 4)

BIAS = 0V, FB = 1.35V

●

300

500

µA

FB = 1.35V

●

µA

IVIN

Supply Quiescent Current

BIAS = 0V, FB = 1.15V, VC = 0.8V, SYNC = 2V

1.35

BIAS = 5V, FB = 1.15V, VC = 0.8V, SYNC = 2V

0.475

Minimum BIAS Voltage (Note 5)

2.7

3.15

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