DP2525B中文資料ETC數據手冊PDF規(guī)格書

FEATURES

Low Cost Solution Buil-in 800V power BJT

Multi-Mode PSR Control

Audio Noise Free Operation

±4 CC and CV Regulation

Optimized Dynamic Response

Low Standby Power <100mW

Programmable Cable Drop Compensation

(CDC) in CV Mode

Built-in AC Line & Load CC Compensation

Build in Protections:

 Short Load Protection (SLP)

 Cycle-by-Cycle Current Limiting

 Leading Edge Blanking (LEB)

 Pin Floating Protection

 VDD OVP & UVP & Clamp

Available with DP2525 Versions in SOP-7

Package

APPLICATIONS

Battery Chargers for Cellular Phones

AC/DC Power Adapter and LED Lightings

GENERAL DESCRIPTION

DP2525 is a low cost and high performance

Primary Side Regulation (PSR) controller for

offline small power converter applications which

can provide very tight output voltage regulation

(CV) and output current control (CC) ideal for

charging applications.

In CV mode, DP2525 adopts Multi Mode Control

which uses the hybrid of AM (Amplitude

Modulation) mode and (Frequency Modulation)

FM mode to improve system efficiency and

reliability. In CC mode, the IC uses PFM control

with line and load CC compensation. The IC can

achieve audio noise free operation and optimized

dynamic response. The built-in Cable Drop

Compensation (CDC) function can provide

excellent CV performance.

DP2525 integrates functions and protections of

Under Voltage Lockout (UVLO), VDD over Voltage

Protection (VDD OVP), Cycle-by-cycle Current

Limiting (OCP), Short Load Protection (SLP), Pin

Floating Protection, VDD Clamping, etc.