3

LTC3427

3427fa

TYPICAL PERFOR A CE CHARACTERISTICS

2-Cell Alkaline to 3.3V Efficiency

Li-Ion to 5V Efficiency

2-Cell Alkaline to 5V Efficiency

Inrush Current Control

Load Transient Response

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 LTC3427E 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 is measured into the V

bootstrapped to the output. The current will reflect to the input supply by:

(V

ELECTRICAL CHARACTERISTICS

Note 4: Specification is guaranteed by design and not 100% tested in

production.

Note 5: The LTC3427 includes an overtemperature shutdown that is

intended to protect the device during momentary overload conditions.

Junction temperature will exceed 125

°C when the overtemperature

shutdown is active. Continuous operation above the specified maximum

operating junction temperature may impair device reliability.

LOAD CURRENT (mA)

1

70

75

80

85

90

10

100

1000

3427 G01

65

60

55

50

95

100

LOAD CURRENT (mA)

1

70

75

80

85

90

10

100

1000

3427 G02

65

60

55

50

95

100

LOAD CURRENT (mA)

1

70

75

80

85

90

10

100

1000

3427 G03

65

60

55

50

95

100

1V/DIV

SHDN

5V/DIV

L = 4.7

µH

500

µs/DIV

3427 G04

INDUCTOR

CURRENT

100mA/DIV

100mV/DIV

AC COUPLED

40mA

TO 100mA

L = 4.7

µH

100

µs/DIV

3427 G05

500ns/DIV

L = 4.7

µH

3427 G13

10mA

50mA

100mA