Datasheet > MP4658

MP4658

更新时间： 2024-04-09 19:03:26

品牌	Logo	应用领域
芯源 - MPS		驱动驱动器
页数	文件大小	规格书
19页	814K
描述
4 串、每通道最大 200mA、80V返回 LED 驱动器，带AC/DC 反馈

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MP4658 数据手册

MP4658

4-String, Max 200mA/Channel, 80V Return

LED Driver with AC/DC Feedback

DESCRIPTION

FEATURES

The MP4658 is a 4-string, secondary-side LED

driver for LED backlighting, and is ideal for

monitor and small-sized TV LED backlighting. It

controls the flyback power stage to regulate the

LED current loop and the output supply voltage.

The MP4658 integrates 4-string LED current

balancing. Powered by a 6V to 36V input supply

•

6V to 36V Supply Voltage (V_IN)

80V/200mA, 4-String LED Current Balance

Provides Feedback for the Previous Power

Stage

<2% LED Current Accuracy

1.5% LED Current Balance

Low LEDx Regulation Voltage, High

Efficiency

Analog and PWM Dimming

LED Open Protection, LED Short Protection

LEDx Pin Short-to-GND Protection

Over-Voltage Protection (OVP)

Thermal Protection

•

voltage (V_IN), the MP4658 outputs

compensation signal to control the primary-side

flyback (or other power stage) via an

optocoupler to regulate the output voltage

(V_OUT).

•

The MP4658 supports analog dimming and

PWM dimming to the LED current through the

ADIM and PDIM pins. For analog dimming,

apply a pulse signal with a frequency above

5kHz to the ADIM pin. For PWM dimming, apply

a low-frequency PWM signal to the PDIM pin.

The MP4658 also supports analog mode PWM

dimming to the LED current, which makes the

LED current rise and fall softly.

Available in an SOIC-16 Package

APPLICATIONS

•

LCD Monitor and TVs

Desktop LCD Flat Panel Displays

Flat-Panel Video Displays

All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive.

For MPS green status, please visit the MPS website under Quality

Assurance. “MPS”, the MPS logo, and “Simple, Easy Solutions” are

trademarks of Monolithic Power Systems, Inc. or its subsidiaries.

The MP4658 features numerous smart

protections to increase system reliability,

including open LED protection, short LED string

protection, LEDx short-to-ground protection, FB

over-voltage protection (OVP), feedback open

protection, and thermal protection. The MP4658

is available in an SOIC-16 package.

TYPICAL APPLICATION

V_LED

Flyback

85V to

265V

N_LED

N_P

100V to

380V Bus

V_SYS

V_OUT

DC/DC

N_SYS

MP4658

LED1

LED2

OVP

GND

VIN

COMP2

COMP1

Flyback

Controller

ISET

OPT

>5kHz

ADIM

PDIM

LED3

LED4

ADIM

PDIM

>100Hz

MP4658 Rev. 1.0

10/13/2021

MonolithicPower.com

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

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