LTC3828EG datasheet(2/32 Pages) LINER

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LTC3828

3828f

Input Supply Voltage (VIN)........................ 30V to –0.3V

Top Side Driver Voltages

(BOOST1, BOOST2) .................................. 36V to – 0.3V

Switch Voltage (SW1, SW2) ........................ 30V to – 5V

INTVCC, DRVCC, RUN1, RUN2, (BOOST1-SW1),

(BOOST2-SW2) .......................................... 7V to – 0.3V

SENSE1+, SENSE2 +, SENSE1–,

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

FCB/PLLIN, PLLFLTR, CLKOUT,

PHSMD Voltage .............................. INTVCC to –0.3V

TRCKSS1, TRCKSS2 ........................... INTVCC to –0.3V

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

PGOOD ..................................................... 5.5V to –0.3V

ITH1, ITH2, VOSENSE1, VOSENSE2 Voltages ...2.7V to –0.3V

Peak Output Current <10

µs (TG1, TG2, BG1, BG2) .. 3A

INTVCC Peak Output Current ................................ 50mA

Operating Temperature Range (Note 7)

LTC3828E .......................................... – 40

°C to 85°C

Junction Temperature (Note 2) ............................ 125

°C

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

°C to 125°C

Reflow Peak Body Temperature (UH Package) .... 260

°C

Lead Temperature (Soldering, 10 sec)

(GN Package) ................................................... 300

°C

ORDER PART

NUMBER

LTC3828EUH

TJMAX = 125°C, θJA = 34°C/W

EXPOSED PAD IS SGND (PIN 33),

MUST BE SOLDERED TO PCB

The

● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VRUN1, 2 = 5V unless otherwise noted.

ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Main Control Loops

VOSENSE1, 2

Regulated Feedback Voltage

(Note 3); ITH1, 2 Voltage = 1.2V

●

0.792

0.800

0.808

IVOSENSE1, 2

Feedback Current

(Note 3)

±5

±50

VREFLNREG

Reference Voltage Line Regulation VIN = 4.6V to 28V (Note 3)

0.002

0.02

%/V

VLOADREG

Output Voltage Load Regulation

(Note 3)

Measured in Servo Loop;

∆ITH Voltage = 1.2V to 0.7V

●

0.1

0.5

Measured in Servo Loop;

∆ITH Voltage = 1.2V to 2.0V

●

– 0.1

– 0.5

gm1, 2

Transconductance Amplifier gm

ITH1, 2 = 1.2V; Sink/Source 5uA; (Note 3)

1.3

mmho

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

UH PART

MARKING

3828

ORDER PART

NUMBER

LTC3828EG

TJMAX = 125°C, θJA = 95°C/W

TOP VIEW

G PACKAGE

28-LEAD PLASTIC SSOP

CLKOUT

PGOOD

BOOST1

TG1

SW1

VIN

INTVCC

PGND

BG1

BG2

SW2

TG2

BOOST2

RUN2

TRCKSS1

ITH1

SENSE1+

SENSE1–

VOSENSE1

PLLFLTR

RUN1

FCB/PLLIN

SGND

TRCKSS2

SENSE2–

SENSE2+

ITH2

VOSENSE2

32 31 30 29 28 27 26 25

10 11 12 13

TOP VIEW

14 15 16

VOSENSE1

PLLFLTR

RUN1

PHSMD

FCB/PLLIN

SGND

TRCKSS2

SW1

VIN

INTVCC

DRVCC

PGND

BG1

BG2

SW2

UH PACKAGE

32-LEAD (5mm

× 5mm) PLASTIC QFN

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