Datasheet ALED6000 (STMicroelectronics) - 3

ALED6000 Block diagram 2 Block diagram Figure 2. Block diagram
VCC VBIAS VIN BOOT EN EN BOOT ENABLE VREG UVLO CHARGE ISNS CURRENT SENSING REF and BIAS VRAMP 0.25V HS PWM - DRIVER + COMP FB E/A + FB - Logic EN and control TEMP OUT MONITOR SOFT START LS DRIVER ISS SS DIMMING DIM VRAMP GND OSCILLATOR MASTER ILIM & RAMP SLAVE FUNCTION COMP FSW SYNCH ILIM
DS13018
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Rev 2 page 3/45
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