3

LTC3418

3418f

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Switching Frequency

0.88

1

1.12

MHz

Switching Frequency Range

(Note 6)

0.3

4

MHz

SYNC Capture Range

(Note 6)

0.3

4

MHz

35

50

mΩ

25

35

mΩ

Peak Current Limit

12

17

A

Undervoltage Lockout Threshold

1.75

2

2.25

V

Reference Output

1.219

1.250

1.281

V

SW Leakage Current

0.1

1

µA

RUN Threshold

0.5

0.65

0.8

V

The

ELECTRICAL CHARACTERISTICS

Note 1: Absolute Maximum Ratings are those values beyond which the life

of a device may be impaired.

Note 2: The LTC3418 is guaranteed to meet performance specifications

temperature range are assured by design, characterization and correlation

with statistical process controls.

Note 4: Dynamic supply current is higher due to the internal gate charge

being delivered at the switching frequency.

Note 6: This parameter is guaranteed by design and characterization.

TYPICAL PERFOR A CE CHARACTERISTICS

Switch On-Resistance

vs Input Voltage

INPUT VOLTAGE (V)

2.25

0

5

15

20

25

4.25

45

3418 G01

10

3.25

2.75

4.75

3.75

5.25

30

PFET

NFET

35

40

On-Resistance vs Temperature

TEMPERATURE (°C)

–40

0

5

15

20

25

50

35

0

40

60

3418 G02

10

40

45

30

PFET

NFET

–20

20

80

100 120

TEMPERATURE (°C)

–40 –20

0.7980

0.7990

120

3418 G07

0.7970

0.7960

020

40

60

100

80

0.8000

0.7975

0.7985

0.7965

0.7995

Internal Reference Voltage

vs Temperature