LT3466-1 - White LED Driver and Boost Converter in 3mm x 3mm DFN Package

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.

Features

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

Typical Application

Applications

White LED and OLED Displays
Digital Cameras, Sub-Notebook PCs PDAs, Handheld Computers
TFT - LCD Bias Supply
Automotive

Packaging

Order Information

Part Number	Package	Temp	Price(1-99)	Price (1k)*
LT3466EDD-1#PBF	3x3 DFN-10	E	$2.79	$1.95
LT3466EDD-1#TRPBF	3x3 DFN-10	E		$2.05

Demo Boards

Part Number	Description	Price
DC915A	LT3466EDD-1 Demo Board \| Boost LED Driver Plus LCD Bias Supply, 2.7V ≤ VIN ≤ 14V, VLED up to 34V @ 15mA, VLCD Bias = ±15V @ 10mA	$100.00