LT3740_15 datasheet(2/20 Pages) LINER

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LT3740

3740fc

ABSOLUTE MAXIMUM RATINGS

SN–, BGATE, VC, FB, XREF, PGOOD Voltages .............10V

VIN, SHDN, SW, Range Voltages ...............................22V

BIAS, TGATE, BGDP, SN+ Voltages ............................32V

SWB Voltage ............................................................36V

Maximum Junction Temperature........................... 125°C

Operating Temperature Range (Note 2)....–40°C to 85°C

Storage Temperature Range...................–65°C to 125°C

(Note 1)

ELECTRICAL CHARACTERISTICS The l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C, VIN = 5V unless otherwise noted. (Note 2)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Operation Voltage

●

2.2

Maximum Operation Voltage

●

Input Supply Current

SHDN = 0V

SHDN = 5V, BIAS = 14V, FB = 1.5V

0.6

2.5

μA

Feedback Reference Voltage

XREF=1V

●

794

800

808

Feedback Voltage Line Regulation

VIN = 2.5V to 22V

0.006

FB Pin Input Current

FB = 800mV

230

Error Ampliﬁer Transconductance

VC = 1.2V

380

μS

Controller Switching Frequency

●

260

300

330

kHz

Minimum BGATE On Time (Note 3)

500

700

Current Limit

RANGE = 0V

RANGE = Open

RANGE = VIN

105

115

140

Reverse Current Limit

PIN CONFIGURATION

XREF

SHDN

PGOOD

RANGE

VIN

SWB

–

PGND

BGATE

BGDP

TGATE

BIAS

TOP VIEW

DHC PACKAGE

16-LEAD (5mm × 3mm) PLASTIC DFN

TJMAX = 125°C, θJA = 43°C/W

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

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3740EDHC#PBF

LT3740EDHC#TRPBF

3740

16-Lead (5mm

× 3mm) Plastic DFN

–40°C to 85°C

LEAD BASED FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3740EDHC

LT3740EDHC#TR

3740

16-Lead (5mm

× 3mm) Plastic DFN

–40°C to 85°C

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

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/

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