Datasheet ALED6000 (STMicroelectronics)

ALED6000
Datasheet Automotive 3 A 61 V monolithic current source with dimming capability
Features
• AECQ100 qualification • Up to 3 A DC output current HTSSOP16 • 4.5 V to 61 V operating input voltage • RDS(on) = 250 mΩ typ. • Adjustable fSW (250 kHz - 1.5 MHz) • Dimming function with dedicated pin • Low IQ shutdown (10 µA typ. from VIN) • Low IQ operating (2.4 mA typ.) • 3.2% output current accuracy • Synchronization • Enable with dedicated pin • Adjustable soft-start time • Adjustable current limitation • Low-dropout operation (12 μs max.) • VBIAS improves efficiency at light load • Auto recovery thermal shutdown
Applications Product status link
• Suitable for automotive systems ALED6000 • HB LED driving applications • Halogen bulb replacement
Device summary Order code
ALED6000PHTR
Description Package
HTSSOP16 The ALED6000 is a step down monolithic switching regulator designed to source up to 3 A DC current for high power LED driving. The wide input voltage range makes the ALED6000 the ideal choice for automotive systems. The 250 mV typical RSENSE voltage drop enhances the efficiency performance. Digital dimming is implemented by driving the dedicated DIM pin. The adjustable current limitation, designed to select the inductor RMS current accordingly with the nominal output LEDs current, and the switching frequency adjustability make the size of the application compact. Pulse-by-pulse current sensing, improved by digital frequency scaling, implements an effective constant current protection over the different application conditions. The embedded switch- over feature on the VBIAS pin maximizes the efficiency. Multiple devices can be synchronized sharing the SYNCH pin to prevent beating noise in low noise applications and the input current RMS value to be reduced.
DS13018
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Rev 2
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May 2021
www.st.com For further information contact your local STMicroelectronics sales office. Document Outline Cover image Features Applications Description 1 Application schematic 2 Block diagram 3 Pin settings 3.1 Pin connection 3.2 Pin description 3.3 Maximum ratings 3.4 Thermal data 3.5 ESD protection 4 Electrical characteristics 5 Functional description 5.1 Oscillator and synchronization 5.2 Soft-start 5.3 Digital dimming 5.4 Error amplifier and light-load management 5.5 Low VIN operation 5.6 Overcurrent protection 5.7 Overtemperature protection 6 Application information 6.1 Input capacitor selection 6.2 Output capacitor and inductor selection 6.3 Compensation strategy 6.4 Thermal considerations 6.5 Layout considerations 7 Demonstration board 8 Application notes – alternative topologies 8.1 Inverting buck-boost 8.2 Positive buck-boost 8.3 Floating boost 8.4 Compensation strategy for alternative topologies 9 Package information 9.1 HTSSOP16 package information Revision history