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LTC3535

3535fa

PIN CONFIGURATION

ABSOLUTE MAXIMUM RATINGS

VIN1, VIN2 Voltage......................................... –0.3V to 6V

SW1, SW2 Voltage

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

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

SHDN1, SHDN2, FB1, FB2 Voltage............... –0.3V to 6V

VOUT1, VOUT2................................................ –0.3V to 6V

Operating Temperature Range

(Notes 2, 5).............................................. –40°C to 85°C

Junction Temperature ........................................... 125°C

Storage Temperature Range................... –65°C to 150°C

(Note 1)

TOP VIEW

DD PACKAGE

12-LEAD (3mm × 3mm) PLASTIC DFN

FB1

SHDN1

VIN1

FB2

SHDN2

VIN2

VOUT1

SW1

GND

VOUT2

SW2

GND 6

θJA = 43°C/W, θJC(PAD) = 3°C/W,

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

ORDER INFORMATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LTC3535EDD#PBF

LTC3535EDD#TRPBF

LDWV

12-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/

(For each channel) The l denotes the specifications which apply over the specified

operating temperature range of –40°C to 85°C, otherwise specifications are at TA = 25°C. VIN = 1.2V, VOUT = 3.3V unless otherwise noted.

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Start-Up Input Voltage

ILOAD = 1mA

0.68

0.8

Input Voltage Range

After Start-Up. (Minimum Voltage is Load Dependent)

0.5

Output Voltage Adjust Range

1.5

5.25

Feedback Pin Voltage

1.165

1.195

1.225

Feedback Pin Input Current

VFB = 1.30V

Quiescent Current—Shutdown

VSHDN= 0V, Not Including Switch Leakage, VOUT = 0V

0.01

µA

Quiescent Current—Active

Measured on VOUT, Non-Switching

250

500

µA

Quiescent Current—Burst

Measured on VOUT, FB > 1.230V

µA

N-Channel MOSFET Switch Leakage Current

VSW = 5V

0.1

µA

P-Channel MOSFET Switch Leakage Current

VSW = 5V, VOUT = 0V

0.1

µA

N-Channel MOSFET Switch On Resistance

VOUT = 3.3V

0.4

P-Channel MOSFET Switch On Resistance

VOUT = 3.3V

0.6

N-Channel MOSFET Current Limit

550

750

Current Limit Delay to Output

(Note 3)

Maximum Duty Cycle

VFB = 1.15V

ELECTRICAL CHARACTERISTICS

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