LTC3215
LTC3215
PRODUCTION700mA Low Noise High Current LED Charge Pump
- Part Models
- 2
- 1ku List Price
- Starting From $3.04
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Overview
- High Efficiency Operation: 1x, 1.5x or 2x Boost Modes with Automatic Mode Switching
- Ultralow Dropout ILED Current Control
- Output Current up to 700mA
- Low Noise Constant Frequency Operation*
- Wide VIN Range: 2.9V to 4.4V
- Open/Shorted LED Protection
- LED Disconnect in Shutdown
- Low Shutdown Current: 2.5µA
- 4% LED Current Programming Accuracy
- Automatic Soft-Start Limits Inrush Current
- No Inductors
- Tiny Application Circuit (All Components <1mm Profile)
- 3mm × 3mm 10-Lead DFN Package
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 current during start-up. High switching frequency enables the use of small external capacitors. LED current is programmed with an external resistor. The LED is disconnected from VIN during shutdown.
An ultralow dropout current source maintains accurate LED current at very low ILED voltages. Automatic mode switching optimizes efficiency by monitoring the voltage across the LED current source and switching modes only when ILED dropout is detected. The LTC3215 is available in a low profile 3mm × 3mm 10-Lead DFN package.
Applications
- LED Torch/Camera Light Supply for Cell Phones, PDAs and Digital Cameras
- General Lighting and/or Flash/Strobe Applications
Documentation
Data Sheet 1
User Guide 1
Press Release 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC3215EDD#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LTC3215EDD#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Feb 14, 2025 - 25_0016 Bond Wire Change from Gold to Copper Wire (Notification Only) |
||
| LTC3215EDD#PBF | PRODUCTION | |
| LTC3215EDD#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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LTspice
Models for the following parts are available in LTspice:
- LTC3215
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC3215EDD | Low Noise, High Current LED Flash Charge Pump, VIN = 2.9V to 4.4V, AOT
Resources
LTC3215EDD | Low Noise, High Current LED Flash Charge Pump, VIN = 2.9V to 4.4V, LUM
Resources
LTC3215EDD | Low Noise, High Current LED Flash Charge Pump, VIN = 2.9V − 4.4V, LUM
Resources
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