GUI for evaluation module (EVM)
LP8863-Q1
LP8863-Q1 Automotive Display LED-Backlight driver with Six 150-mA channels
Data sheet
LP8863-Q1
- Qualified for Automotive Applications
- AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Input Voltage Operating Range 3 V to 48 V
- Six High-Precision Current Sinks
- Current Matching 1% (typical)
- Dimming Ratio 32 000:1 Using 152-Hz LED Output PWM Frequency
- Up to 16-bit LED Dimming Resolution With SPI, I2C, or PWM Input
- Automatically Detects Used LED Strings and Adjusts LED-Channel Phase Shift
- Independent Current Control for Each Channel
- Hybrid PWM and Current Dimming Function
- Up to 47-V VOUT Boost or SEPIC DC/DC Controller
- Switching Frequency 300 kHz to 2.2 MHz
- Boost Spread Spectrum for Reduced EMI
- Boost Sync Input to Set Boost Switching Frequency From an External Clock
- Integrated Charge Pump Supports Low VIN Conditions Such as Cold Crank
- Output Voltage Automatically Discharged When Boost is Disabled
- Extensive Fault Diagnostics
The LP8863-Q1 is an automotive high-efficiency LED driver with boost controller. The six high-precision current sinks support phase shifting that is automatically adjusted based on the number of channels in use. Current sink brightness can be controlled individually and globally through the SPI or I2C interface; brightness can also be globally controlled with PWM input.
The boost controller has adaptive output voltage control based on the headroom voltages of the LED current sinks. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the LP8863-Q1 to avoid disturbance for AM radio band.
The LP8863-Q1 supports built-in hybrid PWM and current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.
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Technical documentation
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View all 9 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LP8863-Q1 Automotive Display LED-Backlight Driver With Six 150-mA Channels datasheet (Rev. B) | PDF | HTML | 02 Jul 2018 |
| Application note | LP886x-Q1 Feedback Resistor Design Considerations | PDF | HTML | 12 May 2021 | |
| Functional safety information | LP8863-Q1 Functional Safety, FIT Rate, and Failure Mode Distribution | 27 Apr 2020 | ||
| Application note | LP8863-Q1 Automatic String Detection Deep Dive | PDF | HTML | 06 Apr 2020 | |
| Application note | Some Guidelines and Tips for the LED Driver Application | 14 Aug 2019 | ||
| White paper | Powering automotive displays to create interactive driving experiences | 21 Dec 2017 | ||
| Application note | LP8863-Q1 External Component Selection Guide (Rev. A) | 24 Jul 2017 | ||
| Application note | PCB Layout Guideline for Automotive LED Drivers | 07 Apr 2017 | ||
| EVM User's guide | LP8863-Q1 Boost Evaluation Board (LP8863BOOSTEVM) | 15 Mar 2017 |
Design & development
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Reference designs
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This reference design conserves power and extends life of LCD and backlight by adjusting the backlight brightness relative to the ambient light level. The capTIvate touch slider allows the brightness to be finetuned per the user's brightness preference. The sensitive thermal requirements of the (...)
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| HTSSOP (DCP) | 38 | View options |
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