AP5002

PWM CONTROL 2A STEP-DOWN CONVERTER

AP5002

Rev. 6

4 of 10

JUNE 2008

www.diodes.com

Electrical Characteristics

Symbol

Parameter

Conditions

Min

Typ.

Max

Unit

Feedback Voltage

0.784

0.8

0.816

V

Feedback Bias Current

-

0.1

0.5

µA

Quiescent Current

-

3

5

mA

Switch Current

--

3.5

-

-

A

Shutdown Supply Current

-

10

-

µA

∆V

OUT

Line Regulation

-

1

2

%

∆V

OUT

Load Regulation

-

0.5

1

%

Oscillation Frequency

Measure waveform at SW pin

400

500

600

KHz

Evaluate oscillation at SW pin

2.0

-

-

EN Pin Input Voltage

Evaluate oscillation stop at SW pin

-

-

0.8

V

Ven = 2V

-10

-

10

µA

EN Pin Input Leakage

Current

Ven = 0.8V

-10

-

10

µA

Soft-Start Time

--

-

3

-

ms

-

110

150

Internal MOSFET Rdson

-

70

100

m

Ω

Thermal shutdown

140

Minimum Duty Cycle

6.5

%

θ

JA

Thermal Resistance

Junction-to-Ambient

SOP-8L (Note 3)

124

θ

JC

Thermal Resistance

Junction-to-Case

SOP-8L (Note 3)

25

Notes:

3. Test condition: Device mounted on 2oz copper, minimum recommended pad layout, FR-4 PCB.