Product Overview
The KLR3012AR-BAO is a 3-channel LED driver capable of 150mA per channel. PWM and analog dimming for precise brightness control. 4.5V-28V supply range. Comprehensive protection including OCP, OTP, open/short LED detection. SSOP-20 package. Targeted at RGB LED and general illumination.
Key Specifications
| Type | 3-channel LED Driver |
| Channels | 3 |
| Output Current | 150 mA per channel |
| Dimming | PWM (100:1) + Analog (10:1) |
| Efficiency | >90% |
| Supply Voltage | 4.5V to 28V |
| Protection | OCP, OTP, Open LED, Short LED |
| Operating Temp | -40 to +125C |
| Package | SSOP-20 |
Working Principle
The driver uses a constant-current buck topology for each channel. A reference voltage and external resistor set the full-scale current. PWM dimming modulates the enable signal at up to 25kHz for flicker-free operation. Analog dimming adjusts the reference voltage via an external DAC or potentiometer. Open LED detection monitors output voltage; short LED detection monitors current sense voltage. Thermal shutdown protects at 150C junction.
Applications
- RGB LED driving
- General illumination
- Backlighting
- Signage