LTC3523-2 datasheet(2/16 Pages) LINER

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LTC3523/LTC3523-2

3523fb

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VIN1, VIN2, VBAT, VOUT Voltages .................... –0.3V to 6V

SHDN1, PGOOD1, PGOOD2, FB1 Voltages .. –0.3V to 6V

SHDN2, FB2, MODE Voltages ...... –0.3V to (VIN2 + 0.3V)

SW1 Voltage

DC.............................................................. 0.3V to 6V

Pulse < 100ns.......................................... –0.3V to 7V

SW2 Voltage Pulse < 100ns......... –0.3V to (VIN2 + 0.3V)

Operating Temperature Range

(Notes 2, 3).............................................. –40°C to 85°C

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

(Note 1)

16 15 14 13

TOP VIEW

UD PACKAGE

16-LEAD (3mm

3mm) PLASTIC QFN

FB1

VIN1

PG00D1

VOUT

FB2

PGOOD2

MODE

VIN2

TJMAX = 125°C, θJA = 68°C/W

EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB

ORDER INFORMATION

ELECTRICAL CHARACTERISTICS

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Start-Up Voltage

1.6

1.8

Frequency

LTC3523

LTC3523-2

0.9

1.8

1.2

2.4

1.5

2.65

MHz

Quiescent Current–Shutdown

VSHDN1 = VSHDN2 = 0V, VOUT = 0V, VIN1 = VIN2 = VBAT

0.5

μA

Quiescent Current –Sleep

Measured from VSUPPLY, VIN1 = VIN2 = VBAT = 2.4V

μA

Quiescent Current VOUT – Sleep

Measured from VOUT = 3.3V (Note 4)

μA

SHDN1, SHDN2 Input High

SHDN1, SHDN2 Input Low

0.35

SHDN1, SHDN2 Input Current

VSHDN = 5.5V

1.4

μA

PGOOD1, PGOOD2 Threshold

Referenced to the Feedback Voltage

–6

–9

–14

PGOOD1, PGOOD2 Low Voltage

IPGOOD = 1mA

0.35

PGOOD1, PGOOD2 Leakage

VPGOOD = 5.25V

0.01

μA

MODE Input High

1.0

MODE Input Low

0.35

The

l denotes the speciﬁcations which apply over the full operating

temperature range, otherwise speciﬁcations are at TA = 25°C. VIN1 = VIN2 = VBAT = 2.4V, VOUT = 3.3V, unless otherwise speciﬁed.

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3523EUD#PBF

LTC3523EUD-2#PBF

LTC3523EUD#TRPBF

LTC3523EUD-2#TRPBF

LCYC

LDDR

16-Lead (3mm

× 3mm) Plastic DFN

16-Lead (3mm

× 3mm) Plastic DFN

–40°C to 85°C

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

Consult LTC Marketing for information on non-standard lead based ﬁnish parts.

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/

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