MP3386

MP3386

NOT RECOMMENDED FOR NEW DESIGNS

4.5V-25Vin, 50Vout, 6-Channel Boost WLED Driver

ALTERNATIVE PART

NRFND Datasheet

MP3386 continues to be in production for existing customers. Please consider this alternative for new designs:

MP3388S

4.5V-25Vin, 50Vout, 8-Channel Boost WLED Driver

Features & Benefits

High Efficiency
Compact Size
4.3V-to-25V Input Voltage Range
50V Maximum Step-Up Voltage
Balanced Driver for 8 WLED Strings
2.5% Current-Matching Accuracy between Strings
Selectable Switching Frequency of 625kHz or 1.25MHz
PWM or DC Input-Burst PWM Dimming
Programmable Over-Voltage Protection
Under-Voltage Lockout
Open- and Short-LED Protection
Thermal Shutdown
Small QFN24 (4mm × 4mm) Package

… and many more!

概要

The MP3386 is a step-up converter with 6-channel current sources designed for driving the white LED arrays for large size LCD panel backlighting applications. The MP3386 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 MP3386 regulates the current in each LED string to the user programmed value set by an external current setting resistor. The MP3386 applies 6 internal current sources in each LED string terminal to get current balance. And the current matching achieves 3% regulation accuracy between strings. Its low 600mV regulation voltage on LED current sources reduces power loss and improves efficiency. The MP3386 features external PWM dimming or DC input PWM dimming, which allows the flexible control of the backlighting luminance under wide range of the ambient brightness, and also avoids the possibility of PWM dimming audible noise. The dimming PWM signal can be generated internally, and the dimming frequency is programmed by an external setting capacitor.

機能と利点

High Efficiency and Small Size
4.5V to 25V Input Voltage Range
50V Maximum Step-up Voltage
Balanced Driver for 6 Strings of WLED
3% Current Matching Accuracy Between Strings
Selectable Switching Frequency: 1.25MHz or 625kHz
PWM or DC Input Burst PWM Dimming
Programmable Over-voltage Protection Threshold
Under Voltage Lockout
Open and Short LED protection
Thermal Shutdown

アクティブ部品番号

MP3386DR-LF-P MP3386DR-LF-Z

P＆Zの意味

Evaluation Tools

6EV3386DR-00A Evaluation Kit String White LED Driver Evaluation Board

The EV3386DR-00A is an evaluation board for the MP3386DR, a step-up converter designed for large liquid-crystal displays that employ an array of LEDs as the light source. It can drive up to 6 strings in parallel and 10 LEDs per string.

The MP3386 uses internal switch current mode, fixed frequency architecture and includes current ballast in each string terminal, which achieves 3% current regulation accuracy between strings. Low feedback voltage at each LED string help reduce power loss and improve efficiency.

The MP3386 has multiple features to protect the converter from fault conditions, including under-voltage lockout, current limiting, over voltage, short LED, open LED and thermal shut-down protection.

The MP3386 is available in small QFN24 (4mmx 4mm) package.

￥13,871.00
+ tax

設計リソース

シンボル、フットプリント＆3Dモデル

30種以上のフォーマット Show more