See datasheet for actual packaging/pinout drawings

Packaging

Package | PIN:

YZR | 9

Temp:

S (-30 to 85)

ECO Plan:

Green (RoHS & no Sb/Br)

LM3508TL/NOPB


Synchronous Magnetic Constant Current White LED Driver

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Qty.Price
1 - 9 $ 1.03
10 - 24 $ 0.92
25 - 99 $ 0.85
100 - 249 $ 0.73
250 - 499 $ 0.67
500 - 749 $ 0.55
750 - 999 $ 0.44
1000 - 9999 $ 0.35

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Texas Instruments LM3508TL/NOPB

The LM3508 is a synchronous boost converter (no external Schottky diode required) that provides a constant current output. It is designed to drive up to 4 series white LEDs at 30mA from a single-cell Li-Ion battery. A single low power external resistor is used to set the maximum LED current. The LED current can be adjusted by applying a PWM signal of up to 100kHz to the DIM pin. Internal soft-start circuitry is designed to eliminate high in-rush current at start-up. For maximum safety, the device features an advanced short-circuit protection when the output is shorted to ground. Additionally, over-voltage protection and an 850kHz switching frequency allow for the use of small, low-cost output capacitors with lower voltage ratings. During shutdown, the output is disconnected from the input preventing a leakage current path through the LEDs to ground. The LM3508 is available in a tiny 9-bump chip-scale DSBGA package.

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