Typical Schematic
When paired with an InnoSwitch3-MX isolated switcher IC, an InnoMux controller IC dramatically simplifies the power supply design for monitors and TVs by replacing the ACDC and DCDC converters with a single-stage flyback topology. This enables very high system efficiency on a small PCB footprint.
The LED backlight control offers excellent minimum threshold regulation as well as analog and several PWM dimming options. The sequenced PWM dimming option further improves visual performance and stabilizes power demand. Extensive protection features are provided.
Product Highlights
CV and 4-Channel LED Backlight Controller
Eliminates buck and LED backlight boost converters
One or two constant voltage outputs
- Independently regulated outputs with instantaneous transient response ±5% CV on 0%-100%-0% load step
Typical output voltages
- One CV mode: 5 V to 18 V
- Two CV mode: 5 V and 12 V to 18 V
1-4 string LED backlight
- 3% matching accuracy for LED strings
- Analog, PWM, sequenced PWM and filtered PWM operation
- Up to 100 V string voltage / up to 960 mA total string current
- Up to 2:1 LED string voltage range
Advanced Protection / Safety Features
Individual overload protection for all outputs
String imbalanced / short / open protection
Output overvoltage set for auto-restart
Convenient Packages
28-Lead HSOP for single-sided wave soldered PCBs or small 28-Lead QFN (5x5 mm Body) for compact multilayer designs
Data Sheets
