LTC3409 datasheet(2/16 Pages) LINER

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LTC3409

3409f

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VRUN

RUN Threshold

●

0.3

0.65

1.1

IRUN

RUN Leakage Current

0.01

µA

VMODE

MODE Threshold

●

0.3

0.65

1.1

IMODE

MODE Leakage Current

0.01

µA

VSYNCTH

SYNC Threshold

●

0.3

0.65

1.1

ISYNC

SYNC Leakage Current

0.01

µA

VFB

Regulated Feedback Voltage

(Note 4) TA = 25°C

0.6007

0.6130

0.6252

(Note 4) 0°C ≤ TA ≤ 85°C

0.5992

0.6130

0.6268

(Note 4) –40°C ≤ TA ≤ 85°C

●

0.5977

0.6130

0.6283

IVFB

Feedback Current

±30

∆VOVL

∆VFBOVL Overvoltage Lockout

∆VOVL = ∆VFBOVL – VFB (Note 6)

∆VFB

Reference Voltage Line Regulation

(Note 4)

●

0.04

0.4

%/V

∆VOUT

Output Voltage Line Regulation

IOUT = 100mA, 1.6V < VIN < 5.5V

0.04

0.4

%/V

IPK

Peak Inductor Current

VIN = 2.2V, VFB = 0.5V or VOUT = 90%,

0.75

1.3

Duty Cycle < 35%

VLOADREG

Output Voltage Load Regulation

0.5

VIN

Input Voltage Range

●

1.6

5.5

Input DC Bias Current

(Note 5)

Active Mode

VOUT = 90%, ILOAD = 0A

350

475

µA

Sleep Mode

VOUT = 103%, ILOAD = 0A

120

µA

Shutdown

VRUN = 0V, VIN = 5.5V

0.1

µA

fOSC

Nominal Oscillator Frequency

SYNC = GND

●

0.9

1.7

2.1

MHz

SYNC = VIN

●

1.8

2.6

3.0

MHz

SYNC TH

SYNC Threshold

When SYNC Input is Toggling (Note 7)

0.63

SYNC fMIN

Minimum SYNC Pin Frequency

MHz

SYNC fMAX

Maximum SYNC Pin Frequency

MHz

SYNC PW

Minimum SYNC Pulse Width

100

tSS

Soft-Start Period

RUN↑

1ms

Input Supply Voltage .................................. – 0.3V to 6V

RUN, VFB, MODE, SYNC Voltages . – 0.3V to (VIN + 0.3V)

SW Voltage ................................... – 0.3V to (VIN + 0.3V)

Operating Temperature Range (Note 2) .. – 40°C to 85°C

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

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

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

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO

(Note 1)

LTC3409EDD

ORDER PART

NUMBER

DD PART MARKING

LBNM

TJMAX = 125°C, θJA = 43°C/ W

EXPOSED PAD (PIN 9) IS GND

MUST BE SOLDERED TO PCB

The

● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.

VIN = 2.2V unless otherwise specified.

ELECTRICAL CHARACTERISTICS

TOP VIEW

DD PACKAGE

8-LEAD (3mm × 3mm) PLASTIC DFN

VFB

GND

VIN

SYNC

RUN

MODE

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