Datasheet AL3069Q (Diodes) - 2
| Fabricante | Diodes |
| Descripción | Automotive Display LED-Backlight Driver |
| Páginas / Página | 18 / 2 — AL3069Q. Typical Applications Circuit. Pin Descriptions. Pin Number. Pin … |
| Formato / tamaño de archivo | PDF / 1.4 Mb |
| Idioma del documento | Inglés |
AL3069Q. Typical Applications Circuit. Pin Descriptions. Pin Number. Pin Name. Function. www.diodes.com
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AL3069Q Typical Applications Circuit
L 10mH D V V OUT IN C R OUT1 OV1 COUT2 CIN 10mF OUT 22mF 1MW 22mF CS VIN RCS ROV2 0.15W 10kW 51kW Adjustable ON OFF EN RT OVP Q R 9 T COMP CH1 120kW 6 R - C 1kW 0 - 3 - CC L VCC 0.22mF A CH4 CVCC 2.2mF FAULTB ISET RISET PWM1 PWMD GND 10kW
Pin Descriptions Pin Number Pin Name Function
U-QFN4040- TSSOP-16EP 16/SWP (Type DX) (Type UXB) 1 2 CH4 LED current sink 4. Leave the pin open directly if not used. LED current set pin. The corresponding maximum current of all four strings is set through 2 3 ISET connecting a resister from this pin to GND. Overvoltage protection pin. When the OVP pin voltage exceeds 2.0V, the OVP is triggered, 3 4 OVP and the power switch is turned off. When the OVP pin voltage drops below hysteresis voltage, the OVP is released, and the power switch will resume normal operation. 4 5 RT Frequency control pin. ON/OFF control pin. Forcing this pin voltage above 2.4V enables the IC while below 0.5V 5 6 EN shuts down the IC. When the IC is in shutdown mode, all functions are disabled to reduce the supply current below 3µA. 6 8 CS Power switch current-sense input. Boost converter power switch gate output. This pin outputs high voltage (5V) to drive the 7 9 OUT external nMOSFET. 8 10 VCC 5V linear regulator output pin. This pin should be bypassed to GND with a ceramic capacitor. Supply input pin. A capacitor (typical 10µF) should be connected between the VIN and GND 9 11 VIN to keep the DC input voltage constant. 10 12 FAULTB Fault indication. Asserted low to report faulty conditions. 11 13 COMP Soft-start and control loop compensation. 12 14 PWMD Apply a low frequency PWM signal to this pin to get directive PWM dimming function. 13 15 CH1 LED current sink 1. Leave the pin open directly if not used. 14 16 CH2 LED current sink 2. Leave the pin open directly if not used. 15 1 GND Ground 16 7 CH3 LED current sink 3. Leave the pin open directly if not used. Exposed pad. Internally connected to GND. It should be externally connected to GND and Exposed Pad Exposed Pad Exposed Pad thermal mass for enhanced thermal impedance. It should not be used as electrical conduction path. AL3069Q 2 of 18 July 2025 Document number: DS46159 Rev. 2 - 2
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L 10mH D V V OUT IN C R OUT1 OV1 COUT2 CIN 10mF OUT 22mF 1MW 22mF CS VIN RCS ROV2 0.15W 10kW 51kW Adjustable ON OFF EN RT OVP Q R 9 T COMP CH1 120kW 6 R - C 1kW 0 - 3 - CC L VCC 0.22mF A CH4 CVCC 2.2mF FAULTB ISET RISET PWM1 PWMD GND 10kW
Pin Descriptions Pin Number Pin Name Function
U-QFN4040- TSSOP-16EP 16/SWP (Type DX) (Type UXB) 1 2 CH4 LED current sink 4. Leave the pin open directly if not used. LED current set pin. The corresponding maximum current of all four strings is set through 2 3 ISET connecting a resister from this pin to GND. Overvoltage protection pin. When the OVP pin voltage exceeds 2.0V, the OVP is triggered, 3 4 OVP and the power switch is turned off. When the OVP pin voltage drops below hysteresis voltage, the OVP is released, and the power switch will resume normal operation. 4 5 RT Frequency control pin. ON/OFF control pin. Forcing this pin voltage above 2.4V enables the IC while below 0.5V 5 6 EN shuts down the IC. When the IC is in shutdown mode, all functions are disabled to reduce the supply current below 3µA. 6 8 CS Power switch current-sense input. Boost converter power switch gate output. This pin outputs high voltage (5V) to drive the 7 9 OUT external nMOSFET. 8 10 VCC 5V linear regulator output pin. This pin should be bypassed to GND with a ceramic capacitor. Supply input pin. A capacitor (typical 10µF) should be connected between the VIN and GND 9 11 VIN to keep the DC input voltage constant. 10 12 FAULTB Fault indication. Asserted low to report faulty conditions. 11 13 COMP Soft-start and control loop compensation. 12 14 PWMD Apply a low frequency PWM signal to this pin to get directive PWM dimming function. 13 15 CH1 LED current sink 1. Leave the pin open directly if not used. 14 16 CH2 LED current sink 2. Leave the pin open directly if not used. 15 1 GND Ground 16 7 CH3 LED current sink 3. Leave the pin open directly if not used. Exposed pad. Internally connected to GND. It should be externally connected to GND and Exposed Pad Exposed Pad Exposed Pad thermal mass for enhanced thermal impedance. It should not be used as electrical conduction path. AL3069Q 2 of 18 July 2025 Document number: DS46159 Rev. 2 - 2
www.diodes.com
© 2025 Copyright Diodes Incorporated. All Rights Reserved.