Description
LM3643YFFR 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 + | 0.17 |
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 |
Package / Case | DSBGA-12 |
Series | LM3643 |
Packaging | Reel |
Features | I2C Control, IR Mode |
Operating Temperature Range | - 40 C to + 85 C |
Brand | Texas Instruments |
Product Type | LED Lighting Drivers |
Factory Pack Quantity | 3000 |
Subcategory | Driver ICs |
Unit Weight | 0.000088 oz |
For more information, please refer to datasheet
Documents
LM3643YFFR 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.