LINEAR TECHNOLOGY LTC3217 Manual

Update: 28 September, 2023

The LTC3217 is a low noise charge pump DC/DC converter designed to power four high current LEDs. The LTC3217 requires only four small ceramic capacitors and two current set resistors to form a complete LED power supply and current controller. Built-in soft-start circuitry prevents excessive inrush current during start-up and mode changes. High switching frequency enables the use of small external capacitors. Independent high and low current settings are programmed by two external resistors. Shutdown mode and current output levels are selected via two logic inputs. The current through the LEDs is programmed via ISET1 and ISET2. In addition, the brightness can be controlled by pulse width modulation of the EN2 pin. The charge pump optimizes efficiency based on the voltage across the LED current sources. The part powers up in 1x mode and w

Brand: LINEAR

File format: PDF

Size: 180 KB

MD5 Checksum: 1105E7004F5D16FCDAE7BF68DE8C8240

Publication date: 03 May, 2012

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PDF Link: LINEAR TECHNOLOGY LTC3217 Manual PDF

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