MPQ3364

– 4-CH BOOST WLED DRIVER WITH HIGH DIM RATIO AND I2C, AEC-Q100

MPQ3364 Rev. 1.1

MonolithicPower.com

12

7/7/2021

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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

VIN = 12V, L = 22µH, LED = 4P/12S, fSW = 400kHz, ISET = 75mA, TA = 25°C, unless otherwise noted.

Open LED Protection

Open 1 string during normal operation

Short LED Protection

Short 1 string during normal operation

CH1: VSW

20V/div.

CH2: VFF

5V/div.

CH3: IL

500mA/div.

CH4: ILED

200mA/div.

CH1: VLED4

5V/div.

CH2: VLED1

20V/div.

CH3: IL

1A/div.

CH4: ILED

200mA/div.

2ms/div.

4ms/div.

Short Inductor Protection

Short Diode Protection

CH1: VSW

20V/div.

CH2: VFF

5V/div.

CH3: II_SHORT

5A/div.

CH4: ILED

200mA/div.

CH1: VSW

20V/div.

CH2: VFF

5V/div.

CH3:

II_SHORT

5A/div.

CH4: ILED

200mA/div.

10µs/div.

10µs/div.

Short VOUT to GND Protection

Thermal Protection

CH1: VSW

20V/div.

CH2: VSD

5V/div.

CH3: IL

5A/div.

CH4: ILED

200mA/div.

CH1: VSW

20V/div.

CH2: VFF

5V/div.

CH3: IL

1A/div.

CH4: ILED

200mA/div.

1ms/div.

1s/div.