LM3508TL/NOPB Texas Instruments - Yeehing Electronics

Synchronous magnetic constant current white LED driver

Pricing (USD)

Quantity	Unit Price
1 — 99	0.953
100 — 249	0.733
250 — 999	0.54
1,000 +	0.27

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	LED Lighting Drivers
RoHS	Y
Number of Channels	1 Channel
Output Current	30 mA
Input Voltage	2.7 V to 5.5 V
Operating Frequency	850 kHz
Supply Current - Max	30000 uA
Minimum Operating Temperature	- 30 C
Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT
Package / Case	uSMD
Series	LM3508
Packaging	Reel
Features	OVP
Height	0.36 mm
Length	1.51 mm
Operating Temperature Range	- 30 C to + 85 C
Output Type	Constant Current
Type	Inductive
Width	1.51 mm
Brand	Texas Instruments
Topology	Boost
Product Type	LED Lighting Drivers
Factory Pack Quantity	250
Subcategory	Driver ICs

For more information, please refer to datasheet

Documents

LM3508TL/NOPB Datasheet

More Information

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.