LINEAR TECHNOLOGY 700mA Low Noise High Current LED Charge Pump Manual

The LTC3215 is a low noise, high current charge pump DC/DC converter designed to power high current LEDs. The part includes an accurate programmable current source capable of driving loads up to 700mA from a 2.9V to 4.4V input. Low external parts count (two flying capacitors, one programming resistor and two bypass capacitors) makes the LTC3215 ideally suited for small, battery-powered applications. Built-in soft-start circuitry prevents excessive inrush cur- rent during start-up. High switching frequency enables the use of small external capacitors. LED current is pro- grammed with an external resistor. The LED is discon- nected from VIN during shutdown. An ultralow dropout current source maintains accurate LED current at very low IL

Brand: LINEAR

File format: PDF

Size: 160 KB

MD5 Checksum: AB1C4FD6088C635AAD0E2A1C153AD16B

Publication date: 17 February, 2012

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