LTC3407-3 datasheet(2/16 Pages) LINER

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LTC3407-3

34073fa

(Note 1)

VIN Voltages.................................................– 0.3V to 6V

VOUT1, VOUT2 Voltages .................... – 0.3V to VIN + 0.3V

RUN1, RUN2 Voltages ................................ –0.3V to VIN

MODE/SYNC Voltage .................................. – 0.3V to VIN

SW1, SW2 Voltage ......................... – 0.3V to VIN + 0.3V

POR Voltage ................................................– 0.3V to 6V

Ambient Operating Temperature

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

°C to 85°C

Junction Temperature (Note 5) ............................. 125

°C

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

°C to 125°C

ABSOLUTE

AXI U

RATI GS

ORDER PART NUMBER

DD PART MARKING

TJMAX = 125°C, θJA = 40°C/W, θJC = 10°C/W

EXPOSED PAD (PIN 11) IS PGND, MUST BE SOLDERED TO PCB GND

LTC3407EDD-3

PACKAGE/ORDER I FOR ATIO

TOP VIEW

DD PACKAGE

10-LEAD (3mm

× 3mm) PLASTIC DFN

VOUT2

RUN2

POR

SW2

MODE/

SYNC

VOUT1

RUN1

VIN

SW1

GND

LCJB

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/

ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V, unless otherwise specified. (Note 2)

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VIN

Operating Voltage Range

●

3.3

5.5

VOUT1

Output Voltage (Note 3)

°C ≤ TA ≤ 85°C

1.764

1.8

1.836

–40

°C ≤ TA ≤ 85°C

●

1.755

1.8

1.836

VOUT2

Output Voltage (Note 3)

°C ≤ TA ≤ 85°C

3.234

3.3

3.366

–40

°C ≤ TA ≤ 85°C

●

3.218

3.3

3.366

∆VLINE REG

Reference Voltage Line Regulation (Note 3) VIN = 3.3V to 5.5V (Channel 1)

0.3

0.5

%/V

VIN = 3.6V to 5.5V (Channel 2)

∆VLOAD REG

Output Voltage Load Regulation (Note 3)

0.5

Input DC Supply Current (Note 4)

Active Mode

VOUT1 = 1.5V, VOUT2 = 2.8V

700

950

µA

Sleep Mode

VOUT1 = 1.9V, VOUT2 = 3.5V, MODE/SYNC = 3.6V

µA

Shutdown

RUN = 0V, VIN = 5.5V, MODE/SYNC = 0V

0.1

µA

fOSC

Oscillator Frequency

VOUT1 = 1.8V, VOUT2 = 3.3V

●

1.8

2.25

2.7

MHz

fSYNC

Synchronization Frequency

2.25

MHz

ILIM

Peak Switch Current Limit, Channel 1 +

VIN = 3V, VOUT1 = 1.5V, VOUT2 = 2.8V,

0.95

1.2

1.6

Channel 2

Duty Cycle <35%

RDS(ON)

Top Switch On-Resistance

(Note 6)

0.35

0.45

Ω

Bottom Switch On-Resistance

(Note 6)

0.30

0.45

Ω

ISW(LKG)

Switch Leakage Current

VIN = 5V, VRUN = 0V, VOUT1 = VOUT2 = 0V

0.01

µA

POR

Power-On Reset Threshold

VOUT Ramping Down, MODE/SYNC = 0V

–8.5

Power-On Reset On-Resistance

100

200

Ω

Power-On Reset Delay

262,144

Cycles

VRUN

RUN Threshold

●

0.3

1.5

IRUN

RUN Leakage Current

●

0.01

µA

VMODE

MODE Threshold Low

0.5

MODE Threshold High

VIN – 0.5

VIN

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

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