Product Overview
The MP24833GN-Z from MPS (Monolithic Power Systems) is a 4-channel LED backlight driver operating from 4.5V to 26V input with 55 mA per string. It integrates a boost converter and 4 current sinks for LCD panel backlight driving with PWM dimming.
Key Specifications
| Function | 4-channel LED backlight driver |
| Input Voltage | 4.5V to 26V |
| Output Channels | 4 strings |
| LED Current | Up to 55 mA per string |
| Dimming | PWM dimming input |
| Efficiency | Up to 90% |
| Package | QFN-16 (4x4mm) |
Working Principle
An integrated boost converter generates a high voltage rail from the input. Four precision current sinks regulate LED string current to 55 mA each with ±3% matching. External PWM input chops the current for brightness control. Automatic headroom control minimizes boost voltage to optimize efficiency across LED string voltage variations.
Applications
- LCD TV / monitor backlight
- Laptop display backlight
- Automotive display
- Tablet backlight