Datasheet AL8843Q (Diodes) - 10
| Manufacturer | Diodes |
| Description | Automotive Compliant 40V 3A Step-Down LED Driver |
| Pages / Page | 18 / 10 — AL8843Q. Typical Performance Characteristics. LED Current vs. Output … |
| File Format / Size | PDF / 1.2 Mb |
| Document Language | English |
AL8843Q. Typical Performance Characteristics. LED Current vs. Output Voltage. (RSET =0.067Ω, L=47μH). (RSET=0.05Ω, L=47μH)
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AL8843Q Typical Performance Characteristics
(continued) (@TA = +25°C, VIN = 16V, unless otherwise specified.)
LED Current vs. Output Voltage LED Current vs. Output Voltage (RSET =0.067Ω, L=47μH) (RSET=0.05Ω, L=47μH)
1.56 2.11 V =10V IN V =12V IN 2.10 V =10V IN V =12V IN 1.55 V =16V IN V =20V IN 2.09 V =16V IN V =20V IN V =24V 1.54 IN V =28V IN 2.08 V =24V IN V =28V IN V =32V IN V =36V IN 2.07 V =32V IN 1.53 (A) V =40V IN (A) V =36V IN 2.06 V =40V IN rent rent 1.52 2.05 ur ur 2.04 D C D C 1.51 LE LE 2.03 1.50 2.02 2.01 1.49 2.00 1.48 1.99 3 6 9 12 15 18 21 24 27 30 33 3 6 9 12 15 18 21 24 27 30 33 Output Voltage (V) Output Voltage (V)
Performance Characteristics
(@VIN = 16V, 3 LEDs, RSET = 0.3Ω, L = 47μH, TA = +25°C, unless otherwise specified.)
Steady State Start Up
VIN I 10V/div L 100mA/div VSW 10V/div VCTRL 2V/div VSW I 5V/div L 200mA/div Time 1μs/div Time 20μs/div
PWM Dimming (100Hz, Duty=50%) LED Open Protection
VCTRL VSW 2V/div 10V/div VSW 10V/div IL 200mA/div IL VLED 200mA/div 5V/div Time 5ms/div Time 1ms/div AL8843Q 10 of 18 October 2019 Document number: DS41943 Rev. 2 - 2
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© Diodes Incorporated Document Outline Pin Assignments Description Applications Features
(continued) (@TA = +25°C, VIN = 16V, unless otherwise specified.)
LED Current vs. Output Voltage LED Current vs. Output Voltage (RSET =0.067Ω, L=47μH) (RSET=0.05Ω, L=47μH)
1.56 2.11 V =10V IN V =12V IN 2.10 V =10V IN V =12V IN 1.55 V =16V IN V =20V IN 2.09 V =16V IN V =20V IN V =24V 1.54 IN V =28V IN 2.08 V =24V IN V =28V IN V =32V IN V =36V IN 2.07 V =32V IN 1.53 (A) V =40V IN (A) V =36V IN 2.06 V =40V IN rent rent 1.52 2.05 ur ur 2.04 D C D C 1.51 LE LE 2.03 1.50 2.02 2.01 1.49 2.00 1.48 1.99 3 6 9 12 15 18 21 24 27 30 33 3 6 9 12 15 18 21 24 27 30 33 Output Voltage (V) Output Voltage (V)
Performance Characteristics
(@VIN = 16V, 3 LEDs, RSET = 0.3Ω, L = 47μH, TA = +25°C, unless otherwise specified.)
Steady State Start Up
VIN I 10V/div L 100mA/div VSW 10V/div VCTRL 2V/div VSW I 5V/div L 200mA/div Time 1μs/div Time 20μs/div
PWM Dimming (100Hz, Duty=50%) LED Open Protection
VCTRL VSW 2V/div 10V/div VSW 10V/div IL 200mA/div IL VLED 200mA/div 5V/div Time 5ms/div Time 1ms/div AL8843Q 10 of 18 October 2019 Document number: DS41943 Rev. 2 - 2
www.diodes.com
© Diodes Incorporated Document Outline Pin Assignments Description Applications Features
