Datasheet AL8843Q (Diodes) - 6
| Manufacturer | Diodes |
| Description | Automotive Compliant 40V 3A Step-Down LED Driver |
| Pages / Page | 18 / 6 — AL8843Q. Typical Performance Characteristics. Quiescent Current. vs. … |
| File Format / Size | PDF / 1.2 Mb |
| Document Language | English |
AL8843Q. Typical Performance Characteristics. Quiescent Current. vs. Input Voltage. vs. Temperature
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AL8843Q Typical Performance Characteristics
(@TA = +25°C, VIN = 16V, unless otherwise specified.)
Quiescent Current vs. Input Voltage Quiescent Current vs. Temperature
440 440 420 420 400 400 380 380 (µA) 360 360 rent (µA) 340 ur 340 C rent 320 320 ur 300 cent C 300 es ent 280 ui 280 ec Q ui 260 Q 260 V =16V IN 240 240 220 220 200 200 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100110 120130 Input Voltage (V) Temperature (oC)
SET Threshold Voltage vs. Input voltage SE T Threshold Voltage vs. Temperature
120 120 115 115 110 110 V) V) 105 m m 105 100 100 tage ( tage ( ol 95 ol 95 d V d V 90 90 hol hol 85 es es 85 hr 80 hr 80 75 75 SET T V SET T V 70 SET_H SET_H V 70 V 65 SET_MEAN SET_MEAN 65 VSET_L V 60 SET_L 60 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100110120130 Input Voltage (V) Temperature (oC)
PWM Dimming (VIN=16V, 3 LEDs, 47μH, RSET =0.3Ω) Analog Dimming (VIN=16V, 3LEDs, 47μH, RSET =0.3Ω) LED Current vs. Duty Cycle LED Current vs. CTRL Pin Voltage
340 360 320 L=47µH,freq=680kHz 330 300 fPWM=100Hz 280 300 fPWM=200Hz 260 fPWM=500Hz 270 240 A) fPWM=1kHz 240 220 A) (m 200 210 (m 180 rent 180 ur 160 rent ur 140 150 D C 120 D C LE 120 100 LE 90 80 60 60 40 30 20 0 0 0 10 20 30 40 50 60 70 80 90 100 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 Duty Cycle (%) CTRL Pi n Voltage (V) AL8843Q 6 of 18 October 2019 Document number: DS41943 Rev. 2 - 2
www.diodes.com
© Diodes Incorporated Document Outline Pin Assignments Description Applications Features
(@TA = +25°C, VIN = 16V, unless otherwise specified.)
Quiescent Current vs. Input Voltage Quiescent Current vs. Temperature
440 440 420 420 400 400 380 380 (µA) 360 360 rent (µA) 340 ur 340 C rent 320 320 ur 300 cent C 300 es ent 280 ui 280 ec Q ui 260 Q 260 V =16V IN 240 240 220 220 200 200 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100110 120130 Input Voltage (V) Temperature (oC)
SET Threshold Voltage vs. Input voltage SE T Threshold Voltage vs. Temperature
120 120 115 115 110 110 V) V) 105 m m 105 100 100 tage ( tage ( ol 95 ol 95 d V d V 90 90 hol hol 85 es es 85 hr 80 hr 80 75 75 SET T V SET T V 70 SET_H SET_H V 70 V 65 SET_MEAN SET_MEAN 65 VSET_L V 60 SET_L 60 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100110120130 Input Voltage (V) Temperature (oC)
PWM Dimming (VIN=16V, 3 LEDs, 47μH, RSET =0.3Ω) Analog Dimming (VIN=16V, 3LEDs, 47μH, RSET =0.3Ω) LED Current vs. Duty Cycle LED Current vs. CTRL Pin Voltage
340 360 320 L=47µH,freq=680kHz 330 300 fPWM=100Hz 280 300 fPWM=200Hz 260 fPWM=500Hz 270 240 A) fPWM=1kHz 240 220 A) (m 200 210 (m 180 rent 180 ur 160 rent ur 140 150 D C 120 D C LE 120 100 LE 90 80 60 60 40 30 20 0 0 0 10 20 30 40 50 60 70 80 90 100 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 Duty Cycle (%) CTRL Pi n Voltage (V) AL8843Q 6 of 18 October 2019 Document number: DS41943 Rev. 2 - 2
www.diodes.com
© Diodes Incorporated Document Outline Pin Assignments Description Applications Features
