LTC3412

3

3412fb

TYPICAL PERFOR A CE CHARACTERISTICS

Efficiency vs Load Current

Efficiency vs Load Current

Efficiency vs Load Current

LOAD CURRENT (A)

0.001

100

80

60

40

20

0

10

3412 G01

Burst Mode OPERATION

FORCED CONTINUOUS

0.1

1

0.01

100

90

80

70

60

50

40

30

20

10

0

LOAD CURRENT (A)

0.001

10

3412 G02

1MHz

Burst Mode OPERATION

0.1

1

0.01

LOAD CURRENT (A)

0.001

100

90

80

70

60

50

40

30

20

10

0

10

3412 G03

1MHz

FORCED CONTINUOUS

0.1

1

0.01

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Switching Frequency

0.88

0.95

1.1

MHz

Switching Frequency Range

(Note 6)

0.3

4

MHz

SYNC Capture Range

(Note 6)

0.3

4

MHz

85

110

mΩ

65

90

mΩ

Peak Current Limit

4

5.4

A

Undervoltage Lockout Threshold

2.375

2.500

2.625

V

SW Leakage Current

0.1

1

μA

RUN Threshold

0.5

0.65

0.8

V

RUN/SS Leakage Current

1

μA

Note 1: Stresses beyond those listed under Absolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: The LTC3412E is guaranteed to meet performance specifications

from 0°C to 85°C. Specifications over the – 40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls. The LTC3412I is guaranteed to meet

specified performance over the – 40°C to 85°C temperature range.

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

being delivered at the switching frequency.

Note 6: 4MHz operation is guaranteed by design and not production tested.

Note 7: Switch on resistance is guaranteed by design and test correlation

in the UF package and by production test in the FE package.