LT3479

3

3479fb

ELECTRICAL CHARACTERISTICS

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 LT3479 is guaranteed to meet performance specifications

from 0°C to 70°C. Specifications over the –40°C to 85°C operating

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage

l

2.3

2.5

V

Quiescent Current

0.1

5

1

7.5

μA

mA

Reference Voltage

l

1.216

1.235

1.250

V

Reference Voltage Line Regulation

0.01

0.03

%/V

Out of Pin

100

μA

Soft-Start Pin Current

SS = 0.5V, Out of Pin

9

μA

FBP Pin Bias Current

25

100

nA

FBN Pin Bias Current

25

100

nA

Feedback Amplifier Offset Voltage

–2

2

6

mV

Feedback Amplifier Voltage Gain

250

V/V

Feedback Amplifier Transconductance

150

μS

Feedback Amplifier Sink Current

10

μA

Feedback Amplifier Source Current

10

μA

Switching Frequency

0.9

160

2.7

1

200

3.5

1.15

240

4.1

MHz

kHz

MHz

Maximum Switch Duty Cycle

l

84

93

%

SHDN Pin Current

30

0.1

60

1

μA

μA

SHDN Pin Threshold

0.3

1.5

2

V

Inductor Current Limit

(Note 3)

3.5

5

6.5

A

Switch Current Limit

(Note 3)

3

4.5

6

A

120

200

mV

Switch Leakage Current

SW = 40V

0.2

5

μA

The

temperature range are assured by design, characterization and correlation

with statistical process controls.

DE package guaranteed by design and/or correlation to static test.