LTC3731HG datasheet(2/32 Pages) LINER

2 / 32 page

LTC3731H

3731hf

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

ELECTRICAL CHARACTERISTICS

(Note 1)

Topside Driver Voltages (BOOSTN) ............ 38V to –0.3V

Switch Voltage (SWN)................................... 32V to –5V

Boosted Driver Voltage (BOOSTN – SWN) .... 7V to –0.3V

Peak Output Current <1ms (TGN, BGN) ..................... 5A

Supply Voltages (VCC, VDR), PGOOD

Pin Voltage .................................................. 7V to –0.3V

RUN/SS, PLLFLTR, PLLIN, UVADJ,

FCB Voltages ............................................. VCC to –0.3V

ITH Voltage ................................................ 2.4V to –0.3V

Operating Junction

Temperature Range (Note 2) .................–40

°C to 140°C

Storage Temperature Range ..................–65

°C to 150°C

Lead Temperature G Package (Soldering, 10sec) .. 300

°C

ORDER PART

NUMBER

LTC3731HG

TOP VIEW

G PACKAGE

36-LEAD PLASTIC SSOP

VCC

PLLIN

PLLFLTR

FCB

EAIN

SGND

SENSE1+

SENSE1–

SENSE2+

SENSE2–

SENSE3–

SENSE3+

RUN/SS

ITH

UVADJ

CLKOUT

PGOOD

BOOST1

TG1

SW1

BOOST2

TG2

SW2

VDR

BG1

PGND

BG2

BG3

SW3

TG3

BOOST3

PHASMD

SGND

TJMAX = 140°C, θJA = 95°C/W, θJC = 32°C/W

PINS 5 AND 6 CAN BE GROUNDED OR NC

PIN 7 MUST BE LEFT AS NC

The

● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VCC = VRUN/SS = 5V unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Main Control Loop

VREGULATED

Regulated Voltage at EAIN

VITH = 1.2V (Note 3)

0.594

0.600

0.606

● 0.590

0.600

0.614

VSENSEMAX

Maximum Current Sense Threshold

VEAIN = 0.5V, VITH Open,

VSENSE1–, VSENSE2–, VSENSE3– = 0.6V, 1.8V

●

IMATCH

Maximum Current Threshold Match

Worst-Case Error at VSENSEMAX

–5

VLOADREG

Output Voltage Load Regulation

(Note 3)

Measured in Servo Loop,

∆ITH Voltage = 1.2V to 0.7V

●

0.1

0.7

Measured in Servo Loop,

∆ITH Voltage = 1.2V to 2V

●

–0.1

–0.7

VREFLNREG

Output Voltage Line Regulation

VCC = 4.5V to 7V

0.03

%/V

Transconductance Amplifier gm

ITH = 1.2V, Sink/Source 25µA (Note 3)

●

mmho

gmOL

Transconductance Amplifier GBW

ITH = 1.2V (gm • ZL, ZL = Series 1k-100kΩ-1nF)

MHz

VFCB

Forced Continuous Threshold

●

0.54

0.60

0.66

LTC3731HG Datasheet(PDF) 2 Page - Linear Technology

LTC3731HG Datasheet(HTML) 2 Page - Linear Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Datasheet Download

Link URL