LTM4675 datasheet(2/20 Pages) LINER

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LTC3870-1

38701f

For more information www.linear.com/LTC3870-1

pin conFiguraTion

absoluTe MaxiMuM raTings

VIN ............................................................. –0.3V to 65V

VCC0, VCC1.................................................... –0.3V to 6V

ISENSE0+, ISENSE0−, ISENSE1+, ISENSE1−....... –0.3V to 15V

INTVCC, RUN0/RUN1 .................................. –0.3V to 6V

EXTVCC .................................................... –0.3V to 14V

MODE0/MODE1,

FREQ, PHASMD, ILIM........................–0.3V to INTVCC

FAULT0/FAULT1, ITH0/ITH1, SYNC .............. –0.3V to 3.6V

INTVCC, EXTVCC Peak Current (Note 7) ...............100mA

Operating Junction

Temperature Range............................ –40°C to 125°C

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

24 23 22 21 20 19

TOP VIEW

UF PACKAGE

24-LEAD (4mm

× 4mm) PLASTIC QFN

GND

10 11 12

ISENSE0+

ISENSE0–

RUN0

RUN1

ISENSE1–

ISENSE1+

VCC0

VIN

GND

EXTVCC

INTVCC

VCC1

TJMAX = 125°C, θJA = 46.9°C/W, θJC_BOT = 4.5°C/W

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

orDer inForMaTion

elecTrical characTerisTics The

denotes the specifications which apply over the specified operating

junction temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 15V, VRUN0,VRUN1 = 3.3V, fSYNC = 350kHz

(externally driven) unless otherwise specified.

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3870EUF-1#PBF

LTC3870EUF-1#TRPBF

38701

24-Lead (4mm × 4mm) Plastic QFN

–40°C to 125°C

LTC3870IUF-1#PBF

LTC3870IUF-1#TRPBF

38701

24-Lead (4mm × 4mm) 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.

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/. Some packages are available in 500 unit reels through

designated sales channels with #TRMPBF suffix.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Input Voltage Range

(Note 3)

4.5

VOUT

Output Voltage Range

(Note 4)

0.5

Input Voltage Supply Current

Normal Operation

VRUN0, VRUN1 = 0V

VRUN0, VRUN1 = 3.3V

1.1

2.6

VUVLO

Undervoltage Lockout Threshold

when VIN > 4.2V

VINTVCC Falling

VINTVCC Rising

3.7

4.0

CONTROL LOOP

IISENSE0+,

IISENSE1+

Current Sense + Pin Current

VISENSE0,1+ = 3.3V

±0.1

±1

µA

IISENSE0–,

IISENSE1–

Current Sense – Pin Current

VISENSE0,1– = 3.3V

±0.1

±1

µA

(Note 1)

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