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LP8866-Q1

AKTIV

LED-Hintergrundbeleuchtungstreiber für Fahrzeuganwendungen mit sechs 200-mA-Kanälen

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Datenblatt

LP8866-Q1

AKTIV
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Produktdetails

Number of channels 6 Topology Boost with Current Sink, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 3 Vin (max) (V) 48 Vout (min) (V) 0 Vout (max) (V) 48 Iout (max) (A) 1.2 Iq (typ) (mA) 20 Switching frequency (max) (kHz) 2200 Features Adjustable Switch Frequency, Boost Sync, Current Derating, Enable/Shutdown, Fault Detection, Fault Diagnostic, Global dimming, Hybrid Dimming/Phase Shift, I2C control, LED Open Detection, LED Short to Ground Detection, LED Shorted Detection, Load Disconnect During Shutdown, Power-Line FET, Soft Start, Spread Spectrum, Synchronization Pin, Thermal shutdown
Number of channels 6 Topology Boost with Current Sink, SEPIC Controller Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 3 Vin (max) (V) 48 Vout (min) (V) 0 Vout (max) (V) 48 Iout (max) (A) 1.2 Iq (typ) (mA) 20 Switching frequency (max) (kHz) 2200 Features Adjustable Switch Frequency, Boost Sync, Current Derating, Enable/Shutdown, Fault Detection, Fault Diagnostic, Global dimming, Hybrid Dimming/Phase Shift, I2C control, LED Open Detection, LED Short to Ground Detection, LED Shorted Detection, Load Disconnect During Shutdown, Power-Line FET, Soft Start, Spread Spectrum, Synchronization Pin, Thermal shutdown
HTSSOP (DCP) 38 62.08 mm² 9.7 x 6.4 VQFN (RHB) 32 25 mm² 5 x 5
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Input voltage operating range 3V to 48V
  • Six high-precision current sinks
    • Up to 200mA DC current for each current sink
    • Current matching 1% (typical)
    • Dimming ratio 32 000:1 using 152Hz LED output PWM frequency
    • Up to 16-bit LED dimming resolution with I2C, or PWM input
    • 8 Configurable LED strings configuration
  • Auto-phase shift PWM dimming
  • 12-bit analog dimming
  • Up to 48V VOUT boost or SEPIC DC/DC controller
    • Switching frequency 100kHz to 2.2MHz
    • Boost spread spectrum for reduced EMI
    • Boost sync input to set boost switching frequency from an external clock
    • Output voltage automatically discharged when boost is disabled
  • Extensive fault diagnostics
  • AEC-Q100 qualified for automotive applications:
    • Device temperature grade 1: –40°C to +125°C, TA
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C4B
  • Input voltage operating range 3V to 48V
  • Six high-precision current sinks
    • Up to 200mA DC current for each current sink
    • Current matching 1% (typical)
    • Dimming ratio 32 000:1 using 152Hz LED output PWM frequency
    • Up to 16-bit LED dimming resolution with I2C, or PWM input
    • 8 Configurable LED strings configuration
  • Auto-phase shift PWM dimming
  • 12-bit analog dimming
  • Up to 48V VOUT boost or SEPIC DC/DC controller
    • Switching frequency 100kHz to 2.2MHz
    • Boost spread spectrum for reduced EMI
    • Boost sync input to set boost switching frequency from an external clock
    • Output voltage automatically discharged when boost is disabled
  • Extensive fault diagnostics

The LP8866-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. LED brightness can be controlled globally through the I²C interface or 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 boost voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the LP8866-Q1 to avoid disturbance for AM radio band.

The LP8866-Q1 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.

The LP8866-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. LED brightness can be controlled globally through the I²C interface or 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 boost voltage to the lowest sufficient level in all conditions. A wide-range adjustable frequency allows the LP8866-Q1 to avoid disturbance for AM radio band.

The LP8866-Q1 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet LP8866-Q1 Automotive Display LED-backlight Driver with Six 200 mA Channels datasheet (Rev. C) PDF | HTML 07 Mai 2024
Application note LP886x-Q1 Feedback Resistor Design Considerations PDF | HTML 12 Mai 2021
Certificate LP8866EVM EU Declaration of Conformity (DoC) 01 Sep 2020
Application note LP8864-Q1, LP8864S-Q1, LP8866-Q1, and LP8866S-Q1 Diagnostic Description and Faul PDF | HTML 16 Jul 2020
Technical article Overcoming challenges for backlight LED drivers in automotive display solutions PDF | HTML 16 Jul 2020
EVM User's guide LP8866EVM User's Guide (Rev. A) 30 Jun 2020
Application note LP8866-Q1 Typical Design Guidelines to Achieve CISPR25 Class 5 Conducted and Rad PDF | HTML 29 Jun 2020

Design und Entwicklung

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Evaluierungsplatine

LP8866EVM — LP8866-Q1-Evaluierungsmodul für 6-kanaligen LED-Treiber für die Automobilindustrie

The LP8866EVM helps designers to evaluate the characteristics, operation, and performance of the LP8866(S)-Q1 device, a 6-channel high-efficiency LED driver for automotive display LED backlighting. The LP8866(S)-Q1 device integrates a boost or SEPIC controller and six high-precision current sinks. (...)

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PSpice® für TI ist eine Design- und Simulationsumgebung, welche Sie dabei unterstützt, die Funktionalität analoger Schaltungen zu evaluieren. Diese voll ausgestattete Design- und Simulationssuite verwendet eine analoge Analyse-Engine von Cadence®. PSpice für TI ist kostenlos erhältlich und (...)
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