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    Stepped constant current circuit diagram Share LED buck constant current drive chip H6119 4-40V

     

    H6119 is a buck-down LED constant current driver for a continuous inductor current conduction mode for driving one or more LED strings. The H6119 operating voltage ranges from 4V to 30V, providing an adjustable output current, the output current can reach 1A, and can drive up to dozens of watts based on different input voltages and external devices H6119. The H6119 built-in power switch uses a high-end current detection circuit, as well as the dimming foot DIM compatible with PWM and analog dimming. When the DIM foot voltage is lower than 0.3V, the output is turned off, and enter the standby state. The H6119 has built-in over temperature protection circuit, when the chip reaches the over-temperature protection point into the over-temperature protection mode, the output current gradually decreases to improve system reliability. H6119 outputs current without turning when the low voltage difference is working, improves the LED working life, and has excellent load adjustment rate and linear adjustment rate using constant current circuit. Program characteristics: 1. Output current is up to: 1A 2. High efficiency: 98% 3. Excellent load adjustment rate and linear adjustment rate 4. High-end current detection 5. Glowness control frequency: 25kHz 6. Hall loop control, no loop compensation 7. Working frequency is up to: 1MHz 8. Current accuracy: ± 3% 9. Wide input voltage: 4V ~ 30V 10. Intelligent over temperature protection 11. Low pressure difference without flush Chip package: H6119 SOT23-5 package. Application range: 1.LED spare light, signal light 2. Low voltage LED spotlights replace the halogen lamp 3. Car lighting, etc. Read more

     

     

     

     

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