MP4658 – 4-STRING, 80V RETURN LED DRIVER WITH AC/DC FEEDBACK

MP4658 Rev. 1.0

MonolithicPower.com

9

10/13/2021

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TYPICAL PERFORMANCE CHARACTERISTICS (continued)

VIN_AC = 220VAC, VLED = 40V, ILED = 80mA/string, VSYS = 5V, ISYS = 3A, TA = 25°C, unless otherwise

noted.

Start-Up

Shutdown

CH1: VOUT

CH3: VLED

CH4: ILED

CH2: VSW

CH1: VOUT

CH3: VLED

CH4: ILED

CH2: VSW

LED On

100% dimming

LED On

50% dimming

CH1: VOUT

CH2: VSW

CH3: VLED

CH4: ILED

CH1: VOUT

CH2: VSW

CH4: ILED

CH3: VLED

One String Short

One String Open

CH1: VOUT

CH4: ILED

CH3: VLED

CH2: FT

CH1: VOUT

CH4: ILED

CH3: VLED

CH2: FT