LT3466-1
LT3466-1
PRODUCTIONWhite LED Driver and Boost Converter in 3mm x 3mm DFN Package
- Part Models
- 2
- 1ku List Price
- Starting From $3.06
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Overview
- Drives Up to 10 White LEDs from a 3.6V Supply
- Two Independent Step-Up DC/DC Converters
- Independent Dimming and Shutdown Control of the Outputs
- ±1.5% Output Voltage Accuracy (Boost Converter)
- ±4% LED Current Programming Accuracy
- Internal Schottky Diodes
- Internal Soft-Start Eliminates Inrush Current
- Output Overvoltage Protection (39.5V Max VOUT)
- Fixed Frequency Operation Up to 2MHz
- 83% Efficiency Driving 8 White LEDs at 15mA from a 3.6V Supply
- Wide Input Voltage Range: 2.7V to 24V
- Tiny (3mm × 3mm) 10-Lead DFN Package
LT3466-1 is a dual switching regulator that combines a white LED driver and a boost converter in a low profile, small footprint (3mm × 3mm × 0.75mm) DFN package. The LED driver can be configured to drive up to 10 White LEDs in series and the boost converter can be used for generating the LCD bias voltages or driving a secondary OLED display. Series connection of the LEDs provides identical LED currents resulting in uniform brightness and eliminating the need for ballast resistors and expensive factory calibration.
The LT3466-1 provides independent dimming and shutdown control of the two converters. The operating frequency can be set with an external resistor over a 200kHz to 2MHz range. The white LED driver features a low 200mV reference, thereby minimizing power loss in the current setting resistor for better efficiency. The boost converter achieves ±1.5% output voltage accuracy by the use of a precision 0.8V reference. Protection features include output overvoltage protection and internal soft-start. Wide input supply range allows operation from 2.7V to 24V.
Applications
- White LED and OLED Displays
- Digital Cameras, Sub-Notebook PCs PDAs, Handheld Computers
- TFT - LCD Bias Supply
- Automotive
Documentation
Data Sheet 1
User Guide 1
Technical Articles 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 |
|---|---|---|---|
| LT3466EDD-1#PBF | 10-Lead DFN (3mm x 3mm w/ EP) | ||
| LT3466EDD-1#TRPBF | 10-Lead DFN (3mm x 3mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
LTspice 2
- LT3466-1 - LED Driver IC
- LT3466-1 Demo Circuit - Li-Ion to ±15V TFT LCD Bias Supply (3-14V to +15V @ 10mA & -15V @ 10mA)
Models for the following parts are available in LTspice:
- LT3466
- LT3466-1
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
LT3466EDD-1 Demo Board | Boost LED Driver Plus LCD Bias Supply, 2.7V ≤ VIN ≤ 14V, VLED up to 34V @ 15mA, VLCD Bias = ±15V @ 10mA
Resources
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