The LM3554 is a 2-MHz fixed-frequency, current-mode synchronous boost converter designed to operate as a dual 600-mA (1.2 A total) constant-current driver for high-current white LEDs or as a regulated 4.5-V or 5-V voltage source. It features an I2C-compatible interface for controlling LED current and output voltage, hardware flash enable, and dual synchronization inputs for RF power-amplifier pulse events.
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| Input Voltage (Min) | 2.5V |
| Input Voltage (Max) | 5.5V |
| Output Current (Max) | 1.2A |
| Switching Frequency | 2MHz |
| Efficiency | > 90% |
| Output Voltage (Programmable) | 4.5 or 5.0V |
| Operating Temperature | -30 to 85°C |
| Number of Pins | 16 |
| RoHS | Yes |
| REACH | Yes |
| Us Eccn | EAR99 |
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