LM3643AYFFR Texas Instruments - Yeehing Electronics

Dual LED flash driver Capable of up to 1.5A

Pricing (USD)

Quantity	Unit Price
1 — 99	0.618
100 — 249	0.475
250 — 999	0.35
1,000 +	0.14

The above prices are for reference only.

Specifications

Manufacturer	Texas Instruments
Product Category	LED Lighting Drivers
RoHS	Y
Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C
Mounting Style	SMD/SMT
Package / Case	DSBGA-12
Series	LM3643
Packaging	Reel
Features	I2C Control, IR Mode
Height	0.625 mm
Length	1.69 mm
Operating Temperature Range	- 40 C to + 85 C
Width	1.31 mm
Brand	Texas Instruments
Product Type	LED Lighting Drivers
Factory Pack Quantity	3000
Subcategory	Driver ICs

For more information, please refer to datasheet

Documents

LM3643AYFFR Datasheet

More Information

The LM3643 is a dual LED flash driver that provides a high level of adjustability within a small solution size. The LM3643 utilizes a 2-MHz or 4-MHz fixed-frequency synchronous boost converter to provide power to the dual 1.5-A constant current LED sources. The total LED current the LM3643 boost can deliver is 1.5 A (ILED1 + ILED2 ). The dual 128 level current sources provide the flexibility to adjust the current ratios between LED1 and LED2 with each driver capable of delivering a maximum of 1.5 A (ex: ILED1 = 1.5 A and ILED2 = 0FF, ILED1 = 0FF and ILED2 = 1.5 A, or a current configuration with a current less than 1.5 A , ILED1 = 950 mA and ILED2 = 250 mA). An adaptive regulation method ensures the current sources remain in regulation and maximizes efficiency.