LM3501TL-16 Datasheet PDF - National Semiconductor

●Synchronous Step-up DC/DC Converter for White LED Applications •Synchronous rectification, high efficiency and no external schottky diode required •Uses small surface mount components Can drive 2-5 white LEDs in series (may function with more low-VF LEDs) •2.7V to 7V input range •Internal output over-voltage •protection (OVP) circuitry, with no external zener diode required •LM3500-16: 15.5V OVP; LM3500-21: 20.5V OVP. •True shutdown isolation •Input undervoltage lockout •Requires only small ceramic capacitors at the input and output Thermal Shutdown •0.1µA shutdown current •Small 8-bump thin micro SMD package LCD Bias Supplies •White LED Backlighting •Handheld Devices •Digital Cameras •Portable Applications