LT8609_15 datasheet(2/22 Pages) LINER

2 / 22 page

LT8609

8609f

For more information www.linear.com/LT8609

pin conFiguraTion

absoluTe MaxiMuM raTings

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

FB, TR/SS . .................................................................4V

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

Operating Junction Temperature Range (Note 2)

LT8609E ................................................ –40 to 125°C

LT8609I ................................................. –40 to 125°C

LT8609H................................................–40 to 150°C

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

(Note 1)

BST

INTVCC

SYNC

EN/UV

VIN

TR/SS

TOP VIEW

GND

MSE PACKAGE

10-LEAD PLASTIC MSOP

θJA = 40°C/W

EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB

orDer inForMaTion

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT8609EMSE#PBF

LT8609EMSE#TRPBF

LTGRW

10-Lead Plastic MSOP

–40°C to 125°C

LT8609IMSE#PBF

LT8609IMSE#TRPBF

LTGRW

10-Lead Plastic MSOP

–40°C to 125°C

LT8609HMSE#PBF

LT8609HMSE#TRPBF

LTGRW

10-Lead Plastic MSOP

–40°C to 150°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 nonstandard 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/

elecTrical characTerisTics The

denotes the specifications which apply over the full operating

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

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

2.7

3.0

3.2

VIN Quiescent Current

VEN/UV = 0V, VSYNC = 0V

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

1.7

µA

VIN Current in Regulation

VIN = 6V, VOUT = 2.7V, Output Load = 100µA

VIN = 6V, VOUT = 2.7V, Output Load = 1mA

480

700

µA

Feedback Reference Voltage

VIN = 6V, ILOAD = 100mA, 25°C

VIN = 6V, ILOAD = 100mA

0.778

0.770

0.782

0.786

0.794

Feedback Voltage Line Regulation

VIN = 4.0V to 40V, ILOAD = 0.5A, –40°C to 150°C

0.02

0.04

%/V

Feedback Pin Input Current

VFB = 1V

±20

Minimum On-Time

ILOAD = 1.5A

ILOAD = 1.5A, SYNC = 1.9V

Minimum Off Time

115

Oscillator Frequency

RFSET = 221k, ILOAD = 0.5A

RFSET = 60.4k, ILOAD = 0.5A

RFSET = 18.2k, ILOAD = 0.5A

155

640

1.925

200

700

2.00

245

760

2.075

kHz

MHz

Top Power NMOS On-Resistance

ILOAD = 1A

185

mΩ

Top Power NMOS Current Limit

3.4

4.5

5.7

Bottom Power NMOS On-Resistance

115

mΩ

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