ZD3315EVB Evaluation Board Manual:The ZD3315 contains 4 channels of linear regulated, lowdrop out current sources, specifi cally designed to drive upto 4 strings of LED’s with 150mA sourcing current per channel.Each LED string operates individually by terminating toan internal, regulated current sink, which provides matchedand consistent LED current over a wide input supply range.The LED currents are set by an external resistor, RSET, connectedto the ISET pin. The EN pin provides a chip enablefunction and can be used with a PWM pulse to achieve adimming control function or a DC voltage can be insertedinto the ISET pin to control the LED currents.The ZD3315 is available in a 2mm x 3mm 8-pin DFN green package.
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