AIC1555

4

ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

2.5

6.5

V

Output Adjustment Range

V

Feedback Voltage

0.731

0.75

0.769

V

Feedback Accuracy

-2.5

+2.5

%

Line Regulation

Duty Cycle = 100% to 23%

+1

%

Load Regulation

-1.3

%

FB Input Current

-50

0.01

50

nA

0.32

0.65

0.38

Ω

0.32

0.65

0.38

Ω

P-Channel Current-Limit

Threshold

(Note 2)

1

1.5

2.1

A

Quiescent Current

SYNC/MODE = GND,

35

70

µ

A

Shutdown Supply Current

SHDN = LX = GND, includes LX

leakage current

0.1

1

µ

A

LX Leakage Current

-20

0.1

20

µ

A

Oscillator Frequency

400

500

600

KHz

SYNC Capture Range

500

1000

KHz

Maximum Duty Cycle

100

%

Undervoltage Lockout

Threshold

UVLO

85mV

1.9

2.0

2.1

V

Logic Input High

SHDN , SYNC/MODE, LIM

2

V

Logic Input Low

SHDN , SYNC/MODE, LIM

0.4

V

Logic Input Current

SHDN , SYNC/MODE, LIM

-1

0.1

1

µ

A

SYNC/MODE Minimum

Pulse Width

High or low

500

nS

Note 1: Specifications are production tested at TA=25°C. Specifications over the -40°C to 85°C operating

temperature range are assured by design, characterization and correlation with Statistical Quality

Controls (SQC).

Note 2: Maximum specification is guaranteed by design, not production tested.