Texas Instruments
LM3643AYFFR
LM3643AYFFR
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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.
