ACE722A

Technology

2A PWM BUCK DC-DC Converter

VER 1.2

2

Note 1: Stresses greater than those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.

These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated

under “Recommended Operating Conditions” is not implied. Exposure to “Absolute Maximum Ratings” for extended periods may

affect device reliability.

Packaging Type

SOP-8

1

8

2

7

3

6

4

5

Pin

SOP-8

Function

1

NC

Not Connected

2

VIN

Supply Voltage Input Pin. ACE722A operates from a 4.75V to 25V DC voltage. Bypass

VIN to GND with a suitable large capacitor to eliminate noise on the input.

3

SW

Power Switch Output Pin. SW is the switch node that supplies power to the output.

4

GND

Ground Pin

5

FB

Feedback Pin. Through an external resistor divider network, FB senses the output voltage

and regulates it. To prevent current limit run away in a short circuit fault condition, the

frequency feedback comparator lowers the oscillator frequency to 40kHz when the FB

voltage is below 0.52V. The feedback threshold voltage is 0.8V.

6

COMP

Compensation Pin. This pin is the output of the error amplifier. Frequency compensation

is done at this pin by connecting a series RC to ground (parallel a C if necessary)

7

EN

Enable Pin. Drive EN pin high to turn on the device, drive it low to turn off. Default of this

pin is high level.

8

NC

Not Connected