MP024-10

– PRIMARY-SIDE CC/CV REGULATOR

MP024-10 Rev.1.0

www.MonolithicPower.com

7

4/17/2017

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2017 MPS. All Rights Reserved.

PIN FUNCTIONS

SOIC8-7B

Pin #

Name

Description

1

FB

Feedback. The FB voltage determines the operation mode (CV mode or CC

mode).

2

GND

Ground.

4

DRAIN

Drain of the internal MOSFET. DRAIN is integrated with an internal high-

voltage current source, which charges up VCC for start-up.

5

SOURCE

Source of the internal MOSFET. Connect a current sense resistor to detect the

MOSFET current for peak-current-mode control in CV and CC mode.

6

SS

Select sampling time by different external resistor configurations.

7

CP

Output cable compensation. Connect a 1µF ceramic capacitor to CP as a low-

pass filter. The compensation voltage can be adjusted by the resistor divider. CP

can also be used to select the secondary duty limitation by different external

resistor configurations.

8

VCC

Supply voltage. When VCC is lower than a certain level, the internal high

voltage current source is turned on to charge up VCC. When VCC is charged to

a certain level by the internal high-voltage current source, the IC begins working.

In addition to the bulk capacitor, a 0.1µF ceramic capacitor can be connected as

close to VCC as possible to decouple the noise disturbance.