AP1530

PWM CONTROL 3A STEP-DOWN CONVERTER

AP1530 Rev. 1

3 of 8

MARCH 2007

www.diodes.com

Absolute Maximum Ratings

Symbol

Parameter

Rating

Unit

V

Feedback Pin Voltage

V

EN Pin Voltage

V

Switch Pin Voltage

V

Power Dissipation

Internally limited

mW

Operating Junction Temperature Range

-40 to +125

Storage Temperature

-65 to +150

Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical damage. These values must therefore not be

exceeded under any conditions.

Electrical Characteristics

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

Input Voltage

--

3.6

-

18

V

Feedback Voltage

0.784

0.8

0.816

V

Feedback Bias Current

-

0.1

0.5

µA

Switch Current

--

3.5

-

-

A

Current Consumption During

Power Off

-

10

-

µA

Line Regulation

-

1

2

%

Load Regulation

-

0.2

0.5

%

Oscillation Frequency

Measure waveform at SW pin

240

300

360

KHz

Frequency of Current Limit or

Short Circuit Protect

Measure waveform at SW pin

10

-

-

KHz

Evaluate oscillation at SW pin

2.0

-

-

EN Pin Input Voltage

Evaluate oscillation stop at SW pin

-

-

0.8

V

--

-

20

-

µA

EN Pin Input Leakage

Current

--

-

-10

-

µA

--

75

90

105

µA

Soft-Start Time

--

0.3

2

5

ms

-

110

150

-

70

100

mΩ

EFFI

Efficiency

-

92

-

%

Thermal Resistance

Junction-to-Ambient

-

65

-