LTC3822 datasheet(2/20 Pages) LINER

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LTC3822

3822f

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

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Main Control Loops

Input DC Supply Current

(Note 4)

Normal Operation

340

500

µA

Shutdown

RUN = 0

7.5

µA

UVLO

VIN = UVLO Threshold – 200mV

µA

Undervoltage Lockout Threshold

VIN Falling

●

1.95

2.25

2.55

VIN Rising

●

2.15

2.45

2.75

Shutdown Threshold Of RUN Pin

0.7

1.1

1.4

Regulated Feedback Voltage

(Note 5)

●

0.594

0.6

0.606

Output Voltage Line Regulation

2.75V < VIN < 4.5V (Note 5)

0.025

0.1

%/V

Output Voltage Load Regulation

ITH = 1.3V to 0.9V (Note 5)

0.1

0.5

ITH = 1.3V to 1.7V

–0.1

–0.5

Input Supply Voltage (VIN)....................... –0.3V to 4.5V

BOOST Voltage ..........................................– 0.3V to 10V

FREQ, RUN, IPRG Voltages .......... –0.3V to (VIN + 0.3V)

VFB, ITH Voltages...................................... –0.3V to 2.4V

SW Voltage .......................................... – 2V to VIN + 1V

TG, BG Peak Output Current (<10

µs)........................ 1A

ABSOLUTE MAXIMUM RATINGS

PACKAGE/ORDER INFORMATION

Operating Temperature Range

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

°C to 85°C

Storage Ambient Temperature Range ... – 65

°C to 125°C

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

°C

Lead Temperature

(Soldering, 10 sec, MSE only) .......................... 300

°C

The

● indicates specifications that apply over the full operating temperature

range; otherwise, specifications are at TA = 25°C. VIN = 3.3V unless otherwise noted.

ELECTRICAL CHARACTERISTICS

(Note 1)

LTC3822EDD

LCBF

LTC3822EMSE

LTCBG

TJMAX = 125°C, θJA = 43°C/W

EXPOSED PAD IS GND

(MUST BE SOLDERED TO PCB)

TJMAX = 125°C, θJA = 40°C/W

EXPOSED PAD IS GND

(MUST BE SOLDERED TO PCB)

TOP VIEW

DD PACKAGE

10-LEAD (3mm

× 3mm) PLASTIC DFN

RUN

ITH

VFB

IPRG

FREQ

BOOST

VIN

BOOST

VIN

RUN

ITH

VFB

IPRG

FREQ

TOP VIEW

MSE PACKAGE

10-LEAD PLASTIC MSOP

ORDER PART NUMBER

DD PART MARKING

ORDER PART NUMBER

MSE PART MARKING

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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