MP3326

– 16-CHANNEL LED DRIVER WITH I2C AND SEPARATED PDIM/ADIM

MP3326 Rev. 1.0

www.MonolithicPower.com

10

1/4/2021

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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

VIN = 4.5V, LED = 16P/1S, ISET = 25mA/string, TJ = 25°C, unless otherwise noted.

Slew Rate

PWM dimming, slew rate =

5μs

Phase Shift

PWM dimming, duty = 20%

CH1: VIN

1V/div.

CH4: ILED

100mA/div.

CH1: VIN

5V/div.

CH2: ILED1

50mA/div.

CH3: ILED2

50mA/div.

CH4: ILED

(total)

200mA/div.

10

μs/div.

200

μs/div.

Refresh Function

fPWM = 250Hz, RFRSH = 1FF

LED Short Protection

RFSH/FLT fault enabled

CH1: VIN

2V/div.

CH2:

RFSH/FLT

2V/div.

CH4: ILED

200mA/div.

CH2:

RFSH/FLT

5V/div.

CH1: VIN

2V/div.

CH3: VLED1

2V/div.

CH4: ILED

200mA/div.

2ms/div.

2ms/div.

LED Open-Load Protection

RFSH/FLT fault enabled

CH2:

RFSH/FLT

5V/div.

CH1: VIN

2V/div.

CH3: VLED1

1V/div.

CH4: ILED

200mA/div.

2ms/div.