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AL5887Q

36-Channel I2C/SPI LED Driver

Datasheet

Evaluation Board User Guides

AL5887_Q-EV1-User-Guide.pdf (3.3 MB)

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Description

The AL5887Q is comprised of 36 programmable LED current channels, each with internal 12-bit PWM for color and brightness control through I²C or SPI digital interface. The AL5887Q is ideal for lighting applications and features up to 12 RGB LED modules 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 36 channels. Each channel current can be digitally configured up to 70mA under the thermal limitation of the package.

Features of the AL5887Q are controlled via a I²C/SPI digital interface, which is selectable by the INT_SEL pin. The AL5887Q 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 current (IQ, Power Saving Mode) and easy software programming.

The device operates over the -40°C to +125°C ambient temperature range, and is available in the wettable flank W-QFN6060-52/SWP (Type A1) package.

Feature(s)

AEC-Q100 Grade 1
Input Voltage: 2.7V to 5.5V
36 Precision LED Current Sinks
- OUT Pins Voltage Max. 5.5V
- Maximum of 70mA per Channel Current
- 12-Bit PWM Register with 30kHz Internal PWM Generator
- PWM Phase Shifting
- 6-Bit Global Current Dimming
- Independent Color-Mixing Register per Channel
- Independent Brightness-Control Register per RGB Module
- Logarithmic or Linear Scale Brightness Control
- Three Programmable Banks (A, B, C)
Hardware-Selectable I²C or SPI Digital Interface
- Support 400kHz I²C Interface and 4MHz SPI
Diagnosis Protections Configurable Registers
- Open Drain Fault Pin for Fault Indication
- Individual Fault Mask Registers & Open/Short Registers
- Overtemperature Protection (OTP) with Pre-OTP Warning
Ultra-Low Quiescent Shutdown 1μA:
- Power-Saving Mode: 15μA (Max.)
Totally Lead-Free & Fully RoHS Compliant (Notes 1& 2)
Halogen and Antimony Free. “Green” Device (Note 3)
The AL5887Q is suitable for automotive applications requiring specific change control; this part is AEC-Q100 qualified, PPAP capable, and manufactured in IATF 16949 certified facilities. https://www.diodes.com/quality/product-definitions/

Application(s)

Automotive interior and exterior lighting
Infotainment displays
Automotive status indicator lights
Touch panels and LCD display backlights

Product Specifications

Product Parameters

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 V_{OUT (V)}	5.5 V
Number of Channels	36
LED Current Sense Voltage (mV)	N/A mV
Output Current (mA)	70 mA
Channel Max. Output Current (mA)	70 mA
Accuracy (%)	5 %
Dimming	PWM dimming by Internal Register 12-bit
Temperature Range (°C)	-40 to 125 °C

Technical Documents