The LM3644YFFR is a dual-channel 4MHz I²C dimming driver from Texas Instruments. It operates over a temperature range of -40°C to 85°C and is RoHS compliant. This device features a boost topology with a maximum supply voltage of 5.5V and a maximum output current of 1.5A per channel. The LM3644YFFR is available in a VFBGA-24 package and is suitable for surface mount applications.
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Texas Instruments LM3644YFFR technical specifications.
| Dimming | I²C |
| Frequency | 4MHz |
| Lead Free | Lead Free |
| Max Input Voltage | 5.5V |
| Min Input Voltage | 2.5V |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Output Current | 1.5A |
| Max Supply Voltage | 5.5V |
| Mount | Surface Mount |
| Number of Channels | 2 |
| Number of Outputs | 2 |
| Output Current per Channel | 750mA |
| Output Type | Frequency |
| Package Quantity | 3000 |
| Packaging | Tape and Reel |
| Quiescent Current | 300uA |
| Radiation Hardening | No |
| RoHS Compliant | Yes |
| Topology | Boost |
| RoHS | Compliant |
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