INK1101ST

INK1101 is a single channel, linear constant current LED driver, the driving current can be programmed from 5~120mA with an external resistor RFB. The chip operation voltage range is 3.3~5.5V, the as low as 0.3V current programming voltage and 200mV low saturation voltage make INK1101 provide stable current under wide load, maximizing the cascading LED lamps amount. For dimming applications, external components are suggested, and for none dimming applications only 3 external components are required. The chip internal includes high precision band gap reference, 5.5V shunt regulator, over temperature protection and low dropout constant current driver. INK1101 provides users dimming function for dimming applications such as full color driver, stage light and LCD back lighting. INK1101 output current is controlled by the voltage at DIM pin, when DIM voltage is high, the driver is on, when DIM voltage is low, and the driver is off. When no dimming is needed, DIM pin can be left floating or connected to VCC. INK1101 is built- in over temperature protection function. When the chip junction temperature rise up above 150°C, the output is off, when junction temperature falls below 130°C, the output is on. INK1101 is available in small size SOT23- 5 package, and the operation temperature range is - 40 - 85°C

Applications

• Constant Current LED Modules
• Constant Current LED Strips
• LED Lighting
• LED backlighting for LCD
• LED Stage light

Key features

• High load regulation, output current varies little vs. load voltage variation.
• The Maximum output current can be up to 120mA
• Output current can be programmed with an external resistor.
• Chip supply current is low to 300uA, enhances the LED efficacy.
• Built in Over Temperature Protection (OTP)
• Output current deviation between chips: ≤ ± 5%