AP2006

200KHz, PWM Buck DC/DC & Linear Controller

This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of

this product. No rights under any patent accompany the sale of the product.

Rev.1.1 Nov 17, 2004

1/7

Features

- Provides two regulated voltages

-one PWM Controller( Drive PMOS)

-one Linear Controller (Drive NPN and NMOS)

- Adjustable version: 1.23+/- 2.5%.

- 250KHz +10% fixed switching frequency

- Thermal-shutdown and current-limit protection

- SS/EN Soft-Start/Enable Function.

- Operating voltage can be up to 22V

- Low power standby mode

- Pb-Free Package: SOP8,DIP8

Applications

- Simple High-efficiency step-down regulator

- On-card switching regulators

- XDSL…

General Descriptions

The AP2006 series are monolithic IC’s containing a

PWM and a linear power controller. The PWM

driving a external PMOS. Due to the reduction of

the number of external components, board space

can be saved easily. The external shutdown

function can be controlled by logic level. It switchs

the IC into the standby mode. The internal

compensation provides a good line and load

regulation without external component. Short circuit

protection prohibits the over current in the output

switchs. The AP2006 series operate at the

switching frequency of 250KHz. Therefore, it is able

to use the smaller sized filters than what used to be

used with the lower frequency switching regulators.

Other features include a guaranteed +3% tolerance

on output voltage under specified input voltage and

output load conditions, and +20% on the oscillator

frequency. The linear controller is able to drive an

external NPN transistor, with 30mA current limit

pre-driver. The ICs are available in a standard

SOP8/DIP8 package.

Pin Assignments

AP2006

7

5

4

3

2

1

6 FB1

FB2

SCP

GND

SS/EN

V

CC

(Top View)

OUT2

8

OUT1

SOP-8/DIP-8

Pin Descriptions

Name

Description

Operating voltage input

SCP

Short circuit protect

OUT1

Connecting PMOS’s Gate

GND

Ground

FB1

FB2

Output voltage feedback control

SS/EN

Soft-start/Enable function

OUT2

Linear Controller Driving External NPN