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Datasheet ILD8150, ILD8150E (Infineon) - 7

ПроизводительInfineon
Описание80V DC-DC buck LED driver IC with hybrid dimming down to 0.5%
Страниц / Страница19 / 7 — ILD8150/ILD8150E. LED driver IC for high power LEDs with hybrid dimming …
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Язык документаанглийский

ILD8150/ILD8150E. LED driver IC for high power LEDs with hybrid dimming down to 0.5%. Functional description. Analog dimming

ILD8150/ILD8150E LED driver IC for high power LEDs with hybrid dimming down to 0.5% Functional description Analog dimming

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ILD8150/ILD8150E LED driver IC for high power LEDs with hybrid dimming down to 0.5% Functional description
100 x Iout/Iref [%] 100
Analog dimming
12.5
Hybrid dimming
0.5 0.5 12.5 100 DPWM_IN [%]
Figure 5 Hybrid dimming curve Figure 6
shows the output current in analog dimming. IOUT [A] ILED,AVG ILED,AVG time [s] 1/fSW tON tOFF
Figure 6 Output current waveform in analog dimming at two dimming levels Figure 7
shows the output current in hybrid dimming. IOUT [A] ILED,AVG time [s] tPWM_OUT,ON 1/fOUT
Figure 7 Output current waveform in hybrid dimming
The ILD8150 turns the output stage respectively off when the PWM dimming input signal duty cycle is less than DPWM_IN,OFF and on when the PWM dimming input signal duty cycle is higher than DPWM_IN,ON. The two dim-to-off levels create a hysteresis that avoids unstable states at the on/off boundary. Datasheet 7 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
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