LTC3108-1 datasheet(2/24 Pages) LINER

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LTC3108-1

31081fa

ABSOLUTE MAXIMUM RATINGS

SW Voltage ..................................................–0.3V to 2V

C1 Voltage....................................................–0.3V to 6V

C2 Voltage (Note 5).........................................–8V to 8V

VOUT2, VOUT2_EN...........................................–0.3V to 6V

VAUX.................................................... 15mA into VAUX

(Note 1)

GND

VOUT2_EN

VS1

VS2

VAUX

VSTORE

VOUT

VOUT2

VLDO

PGD

TOP VIEW

DE PACKAGE

12-LEAD (4mm

3mm) PLASTIC DFN

TJMAX = 125°C, θJA = 43°C/W

EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB (NOTE 4)

GN PACKAGE

16-LEAD PLASTIC SSOP NARROW

TOP VIEW

GND

VAUX

VSTORE

VOUT

VOUT2

VLDO

PGD

GND

VOUT2_EN

VS1

VS2

GND

TJMAX = 125°C, θJA = 110°C/W

PIN CONFIGURATION

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Start-Up Voltage

Using 1:100 Transformer Turns Ratio, VAUX = 0V

No-Load Input Current

Using 1:100 Transformer Turns Ratio; VIN = 20mV,

VOUT2_EN = 0V; All Outputs Charged and in Regulation

3mA

Input Voltage Range

Using 1:100 Transformer Turns Ratio

VSTARTUP

500

The

l denotes the speciﬁcations which apply over the full operating

junction temperature range, otherwise speciﬁcations are for TA = 25°C (Note 2). VAUX = 5V, unless otherwise noted.

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3108EDE-1#PBF

LTC3108EDE-1#TRPBF

31081

12-Lead (4mm × 3mm) Plastic DFN

–40°C to 125°C

LTC3108IDE-1#PBF

LTC3108IDE-1#TRPBF

31081

12-Lead (4mm × 3mm) Plastic DFN

–40°C to 125°C

LTC3108EGN-1#PBF

LTC3108EGN-1#TRPBF

31081

16-Lead Plastic SSOP

–40°C to 125°C

LTC3108IGN-1#PBF

LTC3108IGN-1#TRPBF

31081

16-Lead Plastic SSOP

–40°C to 125°C

Consult LTC Marketing for parts speciﬁed for other ﬁxed output voltages or wider operating temperature ranges.

*The temperature grade is identiﬁed by a label on the shipping container.

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/

VS1, VS2, VAUX, VOUT, PGD........................–0.3V to 6V

VLDO, VSTORE ............................................–0.3V to 6V

Operating Junction Temperature Range

(Note 2)................................................. –40°C to 125°C

Storage Temperature Range.................. –65°C to 125°C

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