LLT3837EFE datasheet(2/28 Pages) LINER

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LT3837

3837fa

ELECTRICAL CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

VCC to GND ................................................ –0.3V to 22V

UVLO, SYNC Pin Voltage ............................–0.3V to VCC

SENSE–, SENSE+ Pin Voltage...................... –0.5V, +0.5V

FB Pin Current........................................................±2mA

VC Pin Current........................................................±1mA

Operating Junction Temperature Range

(Notes 2, 3) .......................................... –40°C to 125°C

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

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

(Note 1)

The

l denotes speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are TA = 25°C. VCC = 14V; PG, SG Open; VC = 1.4V, VSENSE = 0, RCMP = 1k, RTON = 90k,

RPGDLY = 27.4k, RENDLY = 90k, unless otherwise speciﬁed.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Power Supply

VCC Operating Range

4.5

VCC Supply Current (ICC) (Note 5)

VC = Open

6.4

VCC Shutdown Current

VC = Open, VUVLO = OV

150

μA

Feedback Ampliﬁer

Feedback Regulation Voltage (VFB)

1.220

1.237

1.251

Feedback Pin Input Bias Current

RCMP Open

200

Feedback Ampliﬁer Transconductance

ΔIC = ±10μA

700

1000

1400

μmho

Feedback Ampliﬁer Source or Sink Current

μA

Feedback Ampliﬁer Clamp Voltage

VFB = 0.9

VFB = 1.4

2.56

0.84

Reference Voltage/Current Line Regulation

12V ≤ VIN ≤ 18V

0.005

0.05

PIN CONFIGURATION

FE PACKAGE

16-LEAD PLASTIC TSSOP

TOP VIEW

VCC

tON

ENDLY

SYNC

SFST

OSC

PGDLY

RCMP

CCMP

SENSE+

SENSE–

UVLO

TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W

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

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT3837EFE#PBF

LT3837EFE#TRPBF

3837EFE

16-Lead Plastic TSSOP

–40°C to 125°C

LEAD BASED FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LLT3837EFE

LT3837EFE#TR

3837EFE

16-Lead Plastic TSSOP

–40°C to 125°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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