PRODUCT OVERVIEW                                 

HS8540 is a step-down constant current driver chip, mainly used in a variety of LED lighting occasions, requiring less peripheral devices.

HS8540 operating voltage range of 6~30V, the maximum output current of 1.2 amperes.

The output current is controlled by sampling resistance, and the accuracy can reach 5%.

DIM pins perform analog dimming in the input range of 0.7 to 2.5V, or input PWM signal for digital dimming.

When the DIM pin voltage is lower than 0.3V, the chip enters the standby mode with very low power consumption.

Internal integration over temperature, over current and load open circuit protection, to ensure the safe operation of the system.

Adopt SOT89-5 and ESOP8 package.

FEATURES                   

¡ô Operating voltage range 6V ~ 30V

¡ô Built-in 30V NDMOS power tube

¡ô Maximum output current 1.2A

¡ô The output current accuracy reaches 5%

¡ô The same pin multiplexing switch, analog or digital dimming

¡ô Overtemperature protection

¡ô Overcurrent protection

¡ô Open circuit protection

¡ô System efficiency reaches 97%

¡ô Need less peripheral devices, simple application