MP3384

MP3384

NOT RECOMMENDED FOR NEW DESIGNS

4.5V-25Vin, 4-Channel WLED Boost Converter

代替品

データシート

MP3384 continues to be in production for existing customers. Please consider this alternative for new designs:

MP3384L

3V～25Vin、50Vout、4チャネル、白色LED昇圧型コンバータ

Features & Benefits

高効率
3V〜25Vの入力電圧範囲
50Vの最大ステップアップ電圧
4つの白色LEDストリング用バランスドライバ
ストリング間で2.5%の電流整合精度
選択可能なスイッチング周波数 : 625kHzまたは1.25MHz
PWM調光
プログラム可能な過電圧保護
低電圧誤動作防止機能
開放および短絡LED保護
サーマルシャットダウン
3mm × 3mm 16ピンQFNパッケージ

… and many more!

概要

The MP3384 is a step-up converter with 4-channel current sources designed for driving the white LED arrays for large size LCD panel backlighting applications. The MP3384 uses current mode, fixed frequency architecture. The switching frequency can be selected at 1.25MHz or 625kHz. It generates an output voltage up to 50V from a 4.5V to 25V input supply. The MP3384 independently regulates the current in each LED string to the user programmed value set by an external current setting resistor. The MP3384 applies 4 internal current sources to achieve a current balance of 2.5% regulation accuracy between strings. Its low 600mV regulation voltage on LED current sources reduces power loss and improves efficiency. The MP3384 includes under voltage lockout, current limiting, over voltage, short LED, open LED and thermal shut-down protection. The MP3384 is available in small QFN16 (3mmx 3mm) package.