LT3971 datasheet(2/24 Pages) LINER

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LT8611

8611p

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VIN, EN/UV, PG, ISP, ISN...........................................42V

BIAS..........................................................................30V

BST Pin Above SW Pin................................................4V

FB, TR/SS, RT, INTVCC, IMON, ICTRL.........................4V

SYNC Voltage .............................................................6V

Operating Junction Temperature Range (Note 2)

LT8611E ................................................. –40 to 125°C

LT8611I .................................................. –40 to 125°C

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

(Note 1)

24 23 22 21

TOP VIEW

GND

UDD PACKAGE

24-LEAD (3mm

5mm) PLASTIC QFN

11 12

SYNC

TR/SS

EN/UV

VIN

PGND

BIAS

INTVCC

BST

θJA = 38°C/W, θJC(PAD) = 10°C/W

EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB

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

temperature range, otherwise specifications are at TA = 25°C.

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT8611EUDD#PBF

LT8611EUDD#TRPBF

8611

24-Lead (3mm

× 5mm) Plastic QFN

–40°C to 125°C

LT8611IUDD#PBF

LT8611IUDD#TRPBF

8611

24-Lead (3mm

× 5mm) Plastic QFN

–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/

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

2.9

3.4

VIN Quiescent Current

VEN/UV = 0V, VSYNC = 0V

1.0

μA

VEN/UV = 2V, Not Switching, VSYNC = 0V

1.7

μA

VEN/UV = 2V, Not Switching, VSYNC = 2V

0.46

VIN Current in Regulation

VOUT = 0.97V, VIN = 6V, Output Load = 100μA

VOUT = 0.97V, VIN = 6V, Output Load = 1mA

210

350

μA

Feedback Reference Voltage

VIN = 6V, ILOAD = 0.5A

0.967

0.956

0.970

0.973

0.984

Feedback Voltage Line Regulation

VIN = 4.0V to 42V, ILOAD = 0.5A

0.004

0.02

%/V

Feedback Pin Input Current

VFB = 1V

–20

INTVCC Voltage

ILOAD = 0mA, VBIAS = 0V

ILOAD = 0mA, VBIAS = 3.3V

3.23

3.25

3.4

3.29

3.57

3.35

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