CFD435A LED Driver IC
The CFD435A is an LED display driver chip from Chipfountain recognized by NovaStar's control system. This page covers its specifications, datasheet, and which NovaStar receiving cards and firmware support it.
NovaStar support
| LED Driver IC | CFD435A |
| Manufacturer | Chipfountain |
| Driver type | Standard |
CFD435A technical specifications
| Output channels | 16 |
| PWM type | S-PWM |
| Max scan | 1-32 |
| Output current (mA) | 0.3-25 |
| Max data clock (MHz) | 30 |
| Supply voltage (V) | 3.0-5.5 |
| Package | QSOP24 |
Key features
- built-in 16K SRAM (up to 1:32 scan)
- PWM refresh-multiplier + GCLK-multiplier technology
- current-grayscale technology to lift low-gray refresh rate
- built-in dynamic energy-saving (lowers panel temperature)
- column blanking
- 64-step global current gain
- 4-step programmable constant-current knee point (0.2/0.3/0.4/0.5 V)
- LED open-circuit detection & protection
- port voltage-clamp caterpillar/ghost suppression
- Schmitt-trigger logic inputs
- current accuracy +/-1.2% typ. (between channels and between ICs)
- operating temperature -40 to 85 C
Typical use: high-end fine-pitch LED display (up to 1:32 scan).
NovaStar receiving cards & firmware that drive the CFD435A
Important: each NovaStar receiving card ships several firmware versions, and each one supports a different group of pixel driver ICs paired with a group of row/scan decode chips — the version label selects the chip group, not a newer/older build. A panel is defined by both its driver IC and its decode/scan chip, so the firmware must list both. To drive the CFD435A, flash the exact version listed for your card below; a higher-numbered version meant for a different chip group will not work.
⚠️ Don't upgrade unless you have a reason to. Receiving-card firmware is not like a controller update that adds features — a higher number just means a different driver-IC group. If your screen works, leave it alone; only re-flash to match a different driver IC.
A card name joined with “/” (e.g. DH7516-S / 7512-S / 7508-S) is a single NovaStar firmware family: those models share one firmware package, so the versions shown for that row are different firmware lines for the same card — not one firmware per model.
| Receiving card | Supported firmware |
|---|---|
| A10s Plus-N | |
| A5s Plus | |
| A5s Plus-N | |
| A7s Plus | |
| A8s Pro | |
| A8s-N | |
| DH3208 | |
| DH7512 | |
| DH7516 | |
| DH7516-S / 7512-S / 7508-S | |
| MRV208-N | |
| MRV412 | |
| MRV412-N / MRV416-N | |
| MRV416 | |
| NV3210 / NV7508 / NV7512 / NV7516 | |
| TCC80 |
Frequently asked questions
What is the CFD435A LED driver IC?
The CFD435A is an LED display driver chip made by Chipfountain. It is used on the LED module to drive the pixels.
Does NovaStar support the CFD435A?
Yes — the CFD435A is in NovaStar's recognized driver-IC library, and NovaLCT can auto-configure it with Smart Settings. Exact support depends on your receiving card model and firmware; upload your config to our RCFGX viewer to confirm.
How do I find out which driver IC my LED panel uses?
Open your receiving card configuration file (.rcfgx) — it records the driver IC type and firmware version. Our free online RCFGX viewer reads this for you without installing NovaLCT.