LTC3819EG datasheet(2/32 Pages) LINER

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LTC3819

3819f

ORDER PART

NUMBER

LTC3819EG

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

TJMAX = 125°C, θJA = 85°C/W

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

temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VBIAS = 5V, VRUN/SS = 5V unless otherwise noted.

(Note 1)

Input Supply Voltage (VIN).........................36V to –0.3V

Topside Driver Voltages (BOOST1,2) .........42V to – 0.3V

Switch Voltage (SW1, 2) .............................36V to – 5 V

SENSE1+, SENSE2 +, SENSE1–,

SENSE2 – Voltages ................... (1.1)INTVCC to –0.3V

EAIN, VOS+, VOS–, EXTVCC, INTVCC, RUN/SS,

VBIAS, ATTENIN, ATTENOUT, PGOOD, NO_CPU,

VID0–VID4, Voltages ...............................7V to – 0.3V

Boosted Driver Voltage (BOOST-SW) .......... 7V to – 0.3V

PLLFLTR, PLLIN, VDIFFOUT,

FCB Voltages ................................... INTVCC to –0.3V

ITH Voltage ................................................2.7V to –0.3V

Peak Output Current <1

µs(TG1, 2, BG1, 2)................ 3A

INTVCC RMS Output Current ................................ 50mA

Operating Ambient Temperature Range

(Note 2) .............................................. – 40

°C to 85°C

Junction Temperature (Note 3) ............................. 125

°C

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

°C to 150°C

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

°C

TOP VIEW

G PACKAGE

36-LEAD PLASTIC SSOP

RUN/SS

SENSE1+

SENSE1–

EAIN

PLLFLTR

PLLIN

FCB

ITH

SGND

VDIFFOUT

VOS

–

VOS

SENSE2–

SENSE2+

ATTENOUT

NO_CPU

VID0

VID1

PGOOD

TG1

SW1

BOOST1

VIN

BG1

EXTVCC

INTVCC

PGND

BG2

BOOST2

SW2

TG2

ATTENIN

VBIAS

VID4

VID3

VID2

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Main Control Loop

VEAIN

Regulated Feedback Voltage

ITH Voltage = 1.2V; Measured at VEAIN (Note 4)

●

0.594

0.600

0.606

VSENSEMAX

Maximum Current Sense Threshold

●

IINEAIN

Feedback Current

(Note 4)

– 5

– 50

VLOADREG

Output Voltage Load Regulation

(Note 4)

Measured in Servo Loop,

∆ITH Voltage: 1.2V to 0.7V ●

0.1

0.5

Measured in Servo Loop,

∆ITH Voltage: 1.2V to 2V

●

– 0.1

– 0.5

VREFLNREG

Reference Voltage Line Regulation

VIN = 3.6V to 30V (Note 4)

0.002

0.02

%/V

VFCB

Forced Continuous Threshold

●

0.57

0.6

0.63

IFCB

Forced Continuous Current

– 0.17

– 1

µA

VBINHIBIT

Burst Inhibit (Constant Frequency)

Measured at FCB pin

4.3

4.8

Threshold

VOVL

Output Overvoltage Threshold

Measured at VEAIN

●

0.64

0.66

0.68

UVLO

Undervoltage Lockout

VIN Ramping Down

3.33

Consult LTC Marketing for parts specified with wider operating temperature ranges.

Order Options Tape and Reel: Add #TR

Lead Free: Add #PBF

Lead Free Tape and Reel: Add #TRPBF

Lead Free Part Marking: http://www.linear.com/leadfree/

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