Datasheet for LTC3217:
- Manufacturer Part Number : LTC3217
- Manufacturer : AD
- Description : 600mA Low Noise Multi-LED Camera Light Charge Pumps
- Series : LTC3217
- Reference Price : USD 1.36
- Our Price : We have a better price, contact us by email
- Product Type : LED Driver IC
- Function : Inductorless (Charge Pump) LED Drivers
- Current Suggest : Production
- Status : Production
- RoHS Status: -
- Voltage: -
- Feature: -
- Package Case: -
- Temperature Range: -
- Packing: Reel/Tray/Tube
- Standard Packing Quantity: -
- Country of Origin: -
- Other Part Number : LTC3217
- Shipping methods : DHL FEDEX UPS TNT
- Delivery Time : Ship within 1 day.
- Manufacturer Production time : 6-8 weeks (Normally have stocks)
- Weight : 0.001KG
Contact us to check the best price and real time inventory quantity for LTC3217. If you need any more information about LTC3217, you can also send us by email. Our email is [email protected], we will reply you in 12 hours.
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 will automatically switch to boost mode whenever any enabled LED current source begins to enter dropout. The first dropout switches the part into 1.5x mode and a subsequent dropout switches the part into 2x mode. The LTC3217 resets to 1x mode whenever the part is shut down.
The LTC3217 is available in a low profile 16-lead (3mm × 3mm × 0.75mm) QFN package.
Applications
- Multi-LED Camera Light Supply for Cellphones/ DSCs/PDAs
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
