Datasheet ILD8150, ILD8150E (Infineon) - 10

ILD8150/ILD8150E LED driver IC for high power LEDs with hybrid dimming down to 0.5% Functional description 3.1.4 Low power mode
If the shut-down signal (SD neg.) is driven low for more than tSD_LO the low power mode is active. If the shut- down signal is held high for more than tSD_HI the IC resumes from low power mode. Low power enabled when A is high Low power enabled when B is low Low power disabled when A is low Low power disabled when B is high or Z 3.3 V 3.3 V SD B SD A
Figure 12 Shut-down signal interfacing
high SD tSD_LO tSD_HI low high SW low
Figure 13 Shut-down timings 3.2 Protection features 3.2.1 Over-temperature protection
The over-temperature protection turns off the output stage when the junction temperature exceeds the temperature threshold TOT,OFF. When the junction temperature falls below the temperature threshold TOT,ON the output stage turns on again. In case of over-temperature the IC stops switching and waits for the over-temperature condition to disappear. The low power mode is not entered in case of over-temperature. tOT,OFF tOT,ON Junction temperature 0 high SW low
Figure 14 Over-temperature protection reaction
Datasheet 10 V1.0 2019-01-31 Document Outline Features Potential applications Description Table of contents 1 Functional block diagram 2 Pin configuration 3 Functional description 3.1 Buck controller features 3.1.1 Output current regulation 3.1.2 Dimming 3.1.3 Digital soft-start 3.1.4 Low power mode 3.2 Protection features 3.2.1 Over-temperature protection 3.2.2 Under-voltage protection 4 Thermal and electrical characteristics 4.1 Package characteristics 4.2 Absolute maximum ratings 4.3 Operating conditions 4.4 Electrical characteristics 5 Package dimensions Disclaimer