TS1518 Datasheet | Taiwan Semiconductor

Step-Up DC-DC Converter, White LED Driver SOT-25 Pin Definition: 1. SW 2. Ground 3. Feedback 4. CTRL 5. Input .. General Description The TS1518 is a step-up DC-DC converter; operates as current source to drive up to 6 white LEDs(VIN at 3.0V) or 8 LEDs(VIN at 3.5V) or 9 LEDs(VIN at 3.5V) in series. Series connecting of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors. The light intensity of these LEDs is proportional to the current passing through them. The TS1518 switches at a fixed frequency of ~930KHz, allowing the use of tiny, low profile inductors and capacitors to minimize footprint and...