LP8863-Q1 LP8863-Q1 Automotive Display LED-Backlight Driver With Six 150-mA Channels | TI.com

LP8863-Q1 (ACTIVE)

LP8863-Q1 Automotive Display LED-Backlight Driver With Six 150-mA Channels

 

Description

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.

Features

  • 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

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Parametrics Compare all products in Automotive LED drivers

 
Topology
Channels (#)
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Iout (Max) (A)
Iq (Typ) (mA)
LED current per channel (mA)
Switching Frequency (Max) (kHz)
Operating temperature range (C)
Features
Applications
Package Group
Package size: mm2:W x L (PKG)
Rating
LP8863-Q1 LP8860-Q1 LP8861-Q1 TPS61193-Q1 TPS61194-Q1 TPS61196-Q1
Boost Controller
Sepic Controller    
Boost Controller     Boost
Sepic    
Boost
Sepic    
Boost
Sepic    
Boost    
6     4     4     3     4     6    
3     3     4.5     4.5     4.5     8    
48     48     40     40     40     30    
7     2     7     6     6     120    
48     48     40     45     40     120    
0.9     0.6     0.4     0.1     0.4     0.2    
10     2.5     5     5     5     2    
150     150     100     100     100     200    
2200     2200     2200     2200     2200     800    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
Adjustable Switch Frequency
Boost Sync
Enable/Shutdown
Fault Diagnostic
Hybrid Dimming/Phase Shift
I2C Control
Power-Line FET
Precision Dimming Control
Soft Start
Spread Spectrum    
Adjustable Switch Frequency
Boost Sync
Fault Diagnostic
Hybrid Dimming/Phase Shift
I2C Control
Spread Spectrum    
Adjustable Switch Frequency
Boost Sync
Fault Detection
Power-Line FET
Sepic Sync
Spread Spectrum
Temperature Compensation    
Boost Sync
Spread Spectrum    
Boost Sync
Spread Spectrum    
Adjustable Switch Frequency    
Backlight     Backlight
Dome
Foot Well    
Backlight
Dome
Foot Well    
Backlight     Backlight     Backlight    
HTSSOP | 38     HLQFP | 32     HTSSOP | 20     HTSSOP | 20     HTSSOP | 20     HTSSOP | 28    
38HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 38)     32HLQFP: 81 mm2: 9 x 9 (HLQFP | 32)     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)     20HTSSOP: 42 mm2: 6.4 x 6.5 (HTSSOP | 20)     28HTSSOP: 62 mm2: 6.4 x 9.7 (HTSSOP | 28)    
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