LT1425CS datasheet(3/20 Pages) LINER

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LT1425

ELECTRICAL CHARACTERISTICS V

IN = 5V, TJ = 25°C, VSW Open, VC = 1.4V, unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Load Compensation

∆VRCCOMP/∆ISW

0.45

Ω

SYNC Function

Minimum SYNC Amplitude

1.5

2.2

Synchronization Range

320

450

kHz

SYNC Pin Input Resistance

Ω

Power Supply

VIN(MIN)

Minimum Input Voltage

2.8

3.1

ICC

Supply Current

7.0

9.5

Shutdown Mode Supply Current

µA

Shutdown Mode Threshold

0.4

0.9

1.3

TYPICAL PERFORMANCE CHARACTERISTICS

Switch Saturation Voltage vs

Switch Current

TEMPERATURE (

°C)

–50

3.1

3.0

2.9

2.8

2.7

2.6

2.5

2.4

1425 G03

–25

100

125

Switch Current Limit vs

Duty Cycle

Minimum Input Voltage vs

Temperature

SWITCH CURRENT (A)

1.2

1.0

0.8

0.6

0.4

0.2

0.6

1.0

1425 G01

0.2

0.4

0.8

1.2

1.4

125

°C

–55

°C

DUTY CYCLE (%)

1425 G02

20 30

50 60 70 80 90 100

2.0

1.5

1.0

0.5

TA = 25°C

The q denotes the specifications which apply over the full operating

temperature range.

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

of a device may be impaired.

Note 2: Feedback amplifier transconductance is RREF referred.

Note 3: Voltage gain is RREF referred.

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