AP2004(2006) Ver la hoja de datos (PDF) - Diodes Incorporated.

Número de pieza

componentes Descripción

Fabricante

AP2004
(Rev.:2006)

PWM BUCK CONTROLLER

Diodes Incorporated. 

AP2004

PWM BUCK CONTROLLER

Electrical Characteristics (Continued) (TA = 25ºC, VCC = 6V, f = 200 Khz)

Output section

Symbol

Parameter

ILEAK

Leakage current

Sink current

IDRV

Source current

VSAT

Output saturation voltage

ISC

Short-circuit output current

PWM comparator

Symbol

Parameter

VT0

VT100

Total device

Symbol

Input threshold voltage at f =

10 KHz (COMP)

Parameter

ICCA

Soft Start

Symbol

Average supply current

Parameter

VSS

Soft-start Voltage

ISS

Constant Charge Current

Conditions

VO = 25V

VIN = 20V

VIN = 20V

IO = 10 mA

VO = 6V

Conditions

CT

Maximum duty cycle

Conditions

CT = 270pF

Conditions

Min. Typ. Max. Unit

10 µA

200

mA

200

mA

1.0 1.5

V

120

mA

Min. Typ. Max. Unit

0.6 0.7

V

1.2 1.3

V

Min. Typ. Max. Unit

6

10 mA

Min. Typ. Max. Unit

2.3

V

20

µA

Typical Application Circuit

R3 1K~30K

Vcc = 12V

C2

10nF

Optional

Q1

P mos

AF9435P L1

AF4835P 22uH

C1

470uF

Output

5V/5A

5A

R1

9K

C4

50nF

Optional

C3

470uF

R2

3K

C4 270pF

C5 50nF

C6 220nF

Vout=Vref ⎜⎛1 + R1 ⎟⎞

⎝ R2 ⎠

Step-Down DC/DC converter

AP2004 Rev. 2

5 of 8

www.diodes.com

DECEMBER 2006

© Diodes Incorporated

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