LTC3441

3

3441fa

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 LTC3441E is guaranteed to meet performance specifications

from 0

°C to 70°C. Specifications over the –40°C to 85°C operating

temperature range are assured by design, characterization and correlation

with statistical process controls.

Note 3: Current measurements are preformed when the outputs are not

switching.

Note 4: This IC includes overtemperature protection that is intended to

protect the device during momentary overload conditions. Junction

temperature will exceed 125

°C when overtemperature protection is active.

Continuous operation above the specified maximum operating junction

temperature may result in device degradation or failure.

ELECTRICAL CHARACTERISTICS

TYPICAL PERFOR A CE CHARACTERISTICS

Load Transient Response,

100mA to 1A

100mV/DIV

1A

100mA

100

μs/DIV

3441 G01

10mV/DIV

AC-COUPLED

BUCK

BUCK-BOOST

BOOST

L = 4.7

μH1μs/DIV

3441 G02

μF

Switch Pins in Buck-Boost Mode

SW1

2V/DIV

50ns/DIV

3441 G03

SW2

2V/DIV

SW1

2V/DIV

50ns/DIV

3441 G04

SW2

2V/DIV

Switch Pins Entering

Buck-Boost Mode

Efficiency

30

90

100

20

10

80

50

70

60

40

0.1

10

100

1000

3441 G17

0

1

Burst Mode

OPERATION