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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数据手册

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MP3318 数据手册

MP3318–3-CHANNEL, LINEAR/EXPONENTIAL DIMMING, WLED DRIVER W/ I²C

TYPICAL PERFORMANCE CHARACTERISTICS

V_IN= 3.6V, 8 LEDs/string, I_LED/Ch = 20mA, L = 10µH, T_A= 25°C, unless otherwise noted.

LED Current for Each Channel with

Current Curve (Dimming by code only)

25mA/string

PWM Only

Current Curve (Dimming by PWM only)

25mA/string

Linear Mode

Expo Mode

Linear Mode

Expo Mode

500

1000

1500

2000

0.2

0.4

0.6

0.8

BRIGHTNESS CODE

Dpwm

Efficiency vs. I_LED

V_IN= 3.8V, Fsw = 1MHz, 10μH, DCR = 280mΩ

Efficiency vs. I_LED

V_IN= 3.8V, Fsw = 500kHz, 10μH, DCR = 280mΩ

25mA/string

100%

1MHz Fsw

500kHz Fsw

90%

80%

70%

60%

50%

40%

30%

90%

80%

70%

60%

50%

40%

30%

TOTAL ILED(mA)

Efficiency vs. I_LED

V_IN= 3.8V, Fsw = 250kHz, 10μH, DCR = 280mΩ

LEDx Voltage vs. LED Current

25mA/string

0.9

0.8

100%

90%

80%

70%

60%

50%

40%

30%

VLED1

VLED2

VLED3

250kHz Fsw

0.7

0.6

0.5

0.4

0.3

0.2

0.1

TOTAL ILED(mA)

I_LED/string (mA)

MP3318 Rev.1.0

10/17/2017

www.MonolithicPower.com

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

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