SNVA757D August   2017  – September 2020 LP8860-Q1

 

  1. 1LP8860-Q1 Version Summary
  2. 2Specific EEPROM Versions
    1. 2.1  A Version
    2. 2.2  B Version
    3. 2.3  C Version
    4. 2.4  D Version
    5. 2.5  E Version
    6. 2.6  F Version
    7. 2.7  G Version
    8. 2.8  H Version
    9. 2.9  J Version
    10. 2.10 L Version
    11. 2.11 N Version
    12. 2.12 R Version
  3. 3Revision History

2.7 G Version

The LP8860G-Q1 is configured for one string × 400 mA using a 5-V VDD and I2C or SPI to control brightness. Table 2-13 lists detailed configuration and full EEPROM information for the LP8860G-Q1.

Table 2-13 Detailed EEPROM Configuration: LP8860G-Q1
A
BoostSwitching Current Limit4 A
SYNC InputDisabled
2 × Charge PumpDisabled
Spread SpectrumDisabled
ƒSW400 kHz
VDD5 V
Initial Boost Voltage35 V
LED DriverInput Brightness Control MethodI2C/SPI BRT Register
Maximum LED current per Channel400 mA
ISET Resistor ControlDisabled
Number of Channels1 string (4 channels combined)
Channel Phase ShiftSingle phase
LED Output Dimming MethodHybrid dimming
Current to PWM Switch Point12.5%
Current Linearity Correction SlopeN/A
Output PWM Dimming Frequency4.883 kHz
Dimming Resolution13-bit PWM + 4-bit dither
Drive Strength and Rise Time100 ns
Dimming Ratio4096:1
Sloper105 ms
Driver Headroom VoltageVSAT + 50 mV
Fault HandlingShort LED Fault Threshold10.6 V
VIN OVP LevelDisabled
VIN UVLO Level3 V
VDD UVLO3 V
Input OCP Limit6 A
Powerline FET TypePMOS
SD Pulldown Current440 µA
Temperature CompensationInternal Temperature CompensationDisabled
External Temperature CompensationDisabled
Current Dimming Knee PointN/A
EXT_TEMP_GAIN[3:0]N/A
EXT_TEMP_LEVEL_HIGH[3:0]N/A
EXT_TEMP_LEVEL_LOW[3:0]N/A
VSYNC and PLLPLLEnabled
VSYNC inputDisabled
SYNC or HSYNCN/A
PWM_SYNCN/A
Pre-dividerN/A
Slow PLL DividerN/A
R_SELN/A
SEL_DividerN/A
PWM_FREQN/A
PWM_RESN/A
Table 2-14 EEPROM Register Values: LP8860G-Q1
ADDRESS (HEX) VALUE (BIN) VALUE (HEX)
6011110010F2
610000000000
6211010100D4
6311011011DB
6411011111DF
65000111011D
660111001072
670111011177
680111011177
690111000171
6A001110113B
6B0000000000
6C000010100A
6D0011000030
6E10110000B0
6F1000010084
7011000100C4
7111110011F3
7211100101E5
7311100110E6
740011010135
750000011006
7611011100DC
7711111111FF
78001111103E

Figure 2-7 shows the use case for the LP8860G-Q1

GUID-519BE8F5-B406-4093-A8BA-D9D3D1B2921B-low.gifFigure 2-7 Use Case for LP8860G-Q1