Datasheet > MP3318

MP3318

更新时间： 2024-04-09 19:01:28

品牌	Logo	应用领域
芯源 - MPS		驱动驱动器
页数	文件大小	规格书
25页	900K
描述
带I2C接口的3 路、38V 输出、线性/指数调光升压 WLED 驱动器

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MP3318 数据手册

MP3318

3-Channel, 38V_OUT,

Linear/Exponential Dimming

Step-Up WLED Driver with I²C

DESCRIPTION

FEATURES

The MP3318 is a WLED step-up converter with

three current sinks and a 2.7 - 5.5V power supply

input. The MP3318 uses peak-current mode to

regulate the LED current set by the internal



2.7V - 5.5V Input Voltage

42V, 250mΩ Internal MOSFET

3-Channel Current Sink, Each Channel

Enable/Disable Respectively

LED Current Up to 25mA in Backlighting

Mode

Linear or Exponential Analog Dimming

LED Current Up to 50mA in Flash Mode

11-Bit Dimming Resolution

Excellent LED Current Accuracy

Excellent LED String Current Matching

500kHz/1MHz Switching Frequency with

Optional -12% Shift

Auto-Switching Frequency (250kHz,

500kHz, 1MHz)



The MP3318 integrates a 250mΩ, 42V MOSFET.

The maximum LED voltage is up to 38V. The

MP3318 is able to drive 10 LEDs in series for

LCD panel applications larger than 5”.



The MP3318 supports both linear and

exponential analog dimming with 11-bit, ultra-

high resolution to accurately regulate the

dimming current. Its auto-switching frequency

function can optimize the efficiency performance.

Full protection features include LED open and

short protection, cycle-by-cycle current-limit

protection, and thermal shutdown.

The I²C interface can set the internal register to

program the MP3318 for flexible applications,

such as dimming mode, LED current ramp, and

protection threshold.



High-Speed I²C Interface (1.2MHz)

Internal Soft Start to Reduce Inrush Current

Current-Limit Protection (0.75A, 1A, 1.25A,

1.5A)

LED Open Protection (17V, 23V, 30V, 38V)

LED Short Protection (2V, 3V, 5V)

Available in a WLCSP-12 (1.3mmx1.7mm)

Package



The MP3318 is available in a tiny WLCSP-12

(1.3mmx1.7mm) package.

APPLICATIONS



Smartphones

Tablets

GPS Receivers

LCD Video Displays with One-Cell Li-Ion

Battery

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” and “The Future of Analog IC Technology” are registered

trademarks of Monolithic Power Systems, Inc.

MP3318 Rev.1.0

10/17/2017

www.MonolithicPower.com

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

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