| Component ID | Type | Value / Part | Function | |--------------|-------------------|--------------------------------|---------------------------| | F1 | PTC Resettable Fuse| 1.1A, 6V (e.g., SMD1206P110) | Overcurrent protection | | D1, D2 | Schottky Diode | SS34 (3A, 40V) or BAT54C | Rectification / ORing | | L1 | Power Inductor | 4.7µH ±20%, CD54 | Buck converter main coil | | L2 | Boost Inductor | 22µH, CDRH6D28 | Backlight boost | | C1, C2 (input)| Ceramic / Electro| 100µF/16V (cap) + 10µF ceramic | Input bulk/decoupling | | C5, C6 (PLL) | Ceramic (NP0) | 22pF (crystal load) | Clock stability | | Rsen | Resistor (1206) | 1.0 ohm, 1% | LED current sense | | Rfb1, Rfb2 | Resistors (0603) | 10k / 2.2k (depends on Vout) | Feedback divider |
If you are reverse-engineering or repairing a BM5291 Ver 1.3 PCB, expect these standard values: bm5291 ver 1.3 schematic
Let’s compare notes. I’ll post hi-res snapshots of the full schematic below. | Component ID | Type | Value /
A schematic diagram is a visual representation of an electronic circuit, showcasing the relationships between various components, such as resistors, capacitors, inductors, and integrated circuits. The BM5291 Ver 1.3 schematic likely comprises a complex network of these components, carefully designed to perform a specific function or set of functions. The BM5291 Ver 1
Updating specific resistors or capacitors to more stable tolerances for more accurate voltage detection. Core Components in the Schematic