Linear Technology LT3491
the LT3491 provides a high efficiency LED driver solution in the smallest of spaces.| Part No. | LT3491 |
|---|---|
| Datasheet | LT3491 Download |
| Manufacturer |  Linear Technology |
| Description | White LED Driver |
| Buy | Stock & Price |
FEATURES
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● Drives Up to Six White LEDs from a 3V Supply High Side Sense Allows “One Wire Current Source” Internal Schottky Diode One Pin Dimming and Shutdown 27V Open LED Protection 2.3MHz Switching Frequency ±5% Reference Accuracy VIN Range: 2.5V to 12V Requires Only 1µF Output Capacitor Wide 300:1 True Color PWMTM Dimming Range 8-Lead SC70 Package Low Profile 6-Lead DFN Package (2mm × 2mm × 0.75mm) Cellular Phones PDAs, Handheld Computers Digital Cameras MP3 Players GPS Receivers TYPICAL APPLICATIO Li-Ion Driver for Four White LEDs SHUTDOWN AND DIMMING CONTROL CTRL EFFICIENCY (%) VIN 3V TO 5V L1 10µH SW GND C1 1µF VIN LT3491 LED C2 1µF CAP RSENSE 10Ω 80 75 70 65 60 55 50 45 40 0 3491 TA01a C1: TAIYO YUDEN LMK212BJ105MD C2: TAIYO YUDEN GMK316BJ105ML L1: MURATA LQH32CN100 U VIN = 3.6V 4 LEDs U 5 Efficiency 10 LED CURRENT (mA) 15 20 3491 TA01b 3491fa 1 LT3491 ABSOLUTE AXI U RATI GS (Note 1) 12V 32V 32V 12V LED Voltage ............................................................
