Datasheet AL5873Q (Diodes) - 2

AL5873Q Typical Applications Circuit
Tail C IN VIN Stop RPW
N
M FAULT B
IO
PWM
T A
AL5873 ADIM
M
Q RFUL
R
L
O
FULL LED1
F
LED2 REF2 LED3
IN
RREF REF1 GND
D
2 RREF
E
1
C N Figure 1. Typical Application A V D A Pin Descriptions Pin Number Pin Name Description
VIN 1 Power Supply for LED Driver NC 2, 4, 5 No Connection PWM Signal Input for Channel 1 to 3, Internally Pulled Down. PWM 3 This pin also serves as enable function of chip. The chip enters standby mode when the PWM pin is pulled to ground longer than 25ms. GND 6, 7, 8 Ground for LED Driver LED3 9 Channel 3 LED Cathode LED2 10 Channel 2 LED Cathode LED1 11 Channel 1 LED Cathode REF2 12 Stop Reference Current Setting, Enabled When FULL is Pulled High. Select LED Current Level Set by External Resistor. When FULL pin is pulled high, the LED current is set by resistor connected to REF2 pin; FULL 13 When FULL pin is pulled low, the LED current is set by resistor connected to REF1 pin. When FULL pin is left floating, this pin is pulled to ground by internal current sink. REF1 14 Tail Reference Current Setting Analog Dimming Input for All Channels. Drive with DC voltage (0.3V < V ADIM 15 ADIM < 1.5V) to adjust output current from 0 to 100%. FAULTB 16 Fault Report. Asserted Low to report faulty conditions. Exposed Pad. Internally connected to GND. It should be externally connected to GND and thermal mass Exposed PAD Exposed PAD for enhanced thermal impedance. It should not be used as electrical conduction path. AL5873Q 2 of 16 February 2021 Document number: DS42780 Rev. 2 - 2
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