The output current of the ZLED7015 is adjusted via a resistor, Rs, connected from pin FB to ground. An internal 0.3V reference improves efficiency and minimizes losses in resistor Rs. The LED current can be adjusted by applying a DC voltage to a pin or by pulse-width modulation (PWM) on the same pin.
The ZLED7015 features soft initialization, ensuring a controlled rise in output voltage and preventing excessive current spikes. Additionally, the device includes overvoltage protection, which is adjusted using two external resistors, R1 and R2.
The ZLED7015 can also be used in applications requiring constant voltage operation, with a voltage range from 6V to 30V. Its 1MHz switching frequency allows for the use of compact, low-cost external components.
Common applications for the ZSLS7015 include:
LED tubes (fluorescent tube replacements)
, retrofit lighting
, architectural/building lighting,
MR16 lights (LED replacements for halogen lamps
), SELV (Separated or Safety Extra-Low Voltage) electrical standards
, LED backlighting
, signage and outdoor lighting
, and industrial, energy-saving, and low-voltage applications.
ZMDi offers the ZLED7015Kit-E1, which includes a circuit board and five sample units for quick and easy evaluation of the device's capabilities.
The ZLED7015 comes in a 10-pin MSOP package and operates in the industrial temperature range of -40 to +85ºC.
