Lumissil IS32LT3136: 32-Channel Linear OLED Driver
OLED driver with UART networking, EMI mitigation, diagnostics, and ASIL-B functionality to animated rear lamps, taillights, and DRL lighting
The IS32LT3136 is designed for common-cathode OLED panels and features 32 independently controlled channels, with up to 22V output capability to accommodate a wide OLED forward voltage variation. Each channel supports 12-bit PWM dimming and 8-bit channel current adjustment, for fine control of brightness and uniformity at the pixel or segment level. The device supports output current from 1mA to 35mA per channel, with ±4% device to device current accuracy and ±4% bit to bit mismatch at 15mA, helping designers achieve the precision required by premium rear-light signatures and segmented OLED effects.
Key features
- Input VLED voltage tolerates up to 22V, nominal operation voltage between 4.5V to 20V
- UART Communication Interface
- Individual PWM dimming to each channel
- 32 channels capable of 35mA each
- Slew rate control and spread spectrum optimize EMI performance
- 256 steps (8-bit) global current setting
- Individual 256 steps (8-bit) DC current adjustment to each channel
- DC feedback (DCFB) for automatic DC/DC VLED adjustment
- Programmable PWM frequency
- 10-bit ADC for pin voltage measurement
- Support OTP for data storage with fail safe mode1
- Fault protection with reporting
- QFN-48 (6×6mm) package
- AEC-Q100 qualification with Temperature Grade 1: -40°C to 125°C
- Developed according to ISO 26262 processes to support ASIL-B applications
Applications
- Animation (OLED) rear light
- Animation taillight
- Animation daytime running light
- Automotive ambient lighting
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