12-Channel Linear LED Driver
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The AL58812Q is comprised of 12 programmable LED current channels each with internal 12-bit PWM for color and brightness control through I2C or SPI digital interface. AL58812Q is ideal for up to 4 RGB LED modules lighting applications with 3 programmable banks (A, B, C) for software control of each color. An external resistor can set up the global output current of all 12 channels. Each channel current can digitally be configured up to 70mA under the thermal limitation of the package.
Features of the AL58812Q are controlled via I2C/SPI digital interface, which is selectable by the INT_SEL pin. The AL58812Q has a 30kHz, 12-bit PWM generator for each channel, as well as channel/module independent color mixing and brightness control registers to enable vivid LED effects with zero audible noise. Users can benefit from the device’s ultra-low shutdown IQ Power Saving Mode and easy software programming.
The device operates over -40°C to +125°C ambient temperature range. The AL58812Q is available in W-QFN5050-40/SWP (Type A1) MSL level 1 package.
| AEC Qualified | Yes |
|---|---|
| Compliance (Only Automotive Supports PPAP) | Automotive |
| Topology | Linear LED Driver |
| Minimum Supply Voltage (V) | 2.7 V |
| Maximum Supply Voltage (V) | 5.5 V |
| Maximum VOUT (V) | 5.5 V |
| Number of Channels | 12 |
| LED Current Sense Voltage (mV) | N/A mV |
| Low Dropout VSAT (mV) | 200@70mA (Typ) mV |
| Output Current (mA) | 70 mA |
| Channel Max. Output Current (mA) | 70 mA |
| Accuracy (%) | ±3 % |
| Control Interface/Protocols | I2C/SPI |
| Diagnosis & Protection | Fault Pin and Diagnosis Registers |
| Dimming (Analog) | 6-bit global brightness control |
| Dimming (PWM) | 12-bit - 30KHz internal oscillator and register |
| Temperature Range (°C) | -40 to 125 °C |
