LTC3883 datasheet(2/22 Pages) LINER

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LTC3870

3870fb

For more information www.linear.com/LTC3870

pin conFiguraTion

absoluTe MaxiMuM raTings

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

BOOST0, BOOST1.......................................–0.3V to 71V

SW0, SW1 .................................................... –5V to 65V

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

(BOOST0-SW0), (BOOST1-SW1) ................. –0.3V to 6V

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 9) ...............100mA

Operating Junction Temperature Range

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

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

9 10

TOP VIEW

UFD PACKAGE

28-LEAD (4mm

× 5mm) PLASTIC QFN

11 12 13

28 27 26 25 24

MODE0

ISENSE0+

ISENSE0–

RUN0

RUN1

ISENSE1–

ISENSE1+

MODE1

BOOST0

BG0

VIN

PGND

EXTVCC

INTVCC

BG1

BOOST1

SGND

TJMAX = 125°C, θJA = 43°C/W, θJC_BOT = 3.4°C/W

EXPOSED PAD (PIN 29) IS SGND, MUST BE SOLDERED TO PCB

orDer inForMaTion

elecTrical characTerisTics

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 (Note 5)

VRUN0,VRUN1 = 3.3V, No Caps on TG and BG

1.1

2.6

VUVLO

Undervoltage Lockout Threshold

When VIN > 4.2V

VINTVCC Falling

VINTVCC Rising

3.7

4.0

The l 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

LTC3870EUFD#PBF

LTC3870EUFD#TRPBF

3870

28-Lead (4mm

× 5mm) Plastic QFN

–40°C to 125°C

LTC3870IUFD#PBF

LTC3870IUFD#TRPBF

3870

28-Lead (4mm

× 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 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/

(Note 1)

LTC3883 Datasheet(PDF) 2 Page - Linear Technology

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