This reference design demonstrates an efficient, step-down, high-power LED driver with strobe and synchronization for fire alarms. A 3-A LED is driven from a common, quasi-regulated 12-V input bus at over 85% efficiency. The circuit supports a clock input for the strobe function which allows synchronization of multiple LED drivers to a common clock source.
| Output voltage options | PMP9762.1 |
|---|---|
| Vin (Min) (V) | 4.5 |
| Vin (Max) (V) | 17 |
| Vout (Nom) (V) | 3.5 |
| Iout (Max) (A) | 3 |
| Output Power (W) | 10.5 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Buck- Synchronous |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Detailed schematic diagram for design layout and components
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| Type | Title | Date | ||
|---|---|---|---|---|
| Application note | PMP9762 Test Results | Feb. 20, 2015 |
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