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LP8866S-Q1 Datasheet(PDF) 1 Page - Texas Instruments |
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LP8866S-Q1 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 82 page  LP8866S-Q1 Automotive Display LED-backlight Driver with Six 150-mA Channels 1 Features • 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 3 V to 48 V • Six high-precision current sinks – Up to 150-mA DC current for each current sink – Current matching 1% (typical) – Dimming ratio 32 000:1 using 152-Hz 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 48-V VOUT boost or SEPIC DC/DC controller – Switching frequency 100 kHz to 2.2 MHz – 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 2 Applications • Backlight for: – Automotive infotainment – Automotive instrument clusters – Smart mirrors – Heads-up displays (HUD) 3 Description The LP8866S-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 LP8866S-Q1 to avoid disturbance for AM radio band. The LP8866S-Q1 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency. Device Information PART NUMBER(1) PACKAGE BODY SIZE (NOM) LP8866S-Q1 HTSSOP (38) 9.70 mm × 4.40 mm QFN (32)(2) 5 mm × 5 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. (2) Product preview. L OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 FB VDD LP8866(S)-Q1 ISNSGND PWM VIN EN BST_FSET COUT ISNS GD PWM_FSET LED_SET BST_SYNC CIN SGND SCL SDA INT ISET SD MODE LED_GND PGND VOUT VSENSE_N VSENSE_P RISENSE C1N C1P CPUMP UVLO DISCHARGE VDD HOST I2C VDD CVDD C2x CPUMP RG RSENSE RFB1 RFB2 RFB3 RISET RUVLO1 RUVLO2 RSD RMODE RBST_FSET RPWM_FSET RLED_SET Simplified Schematic Brightness (%) 0 10 20 30 40 50 60 70 80 90 100 75 80 85 90 95 D007 VOUT = 29 V VOUT = 36 V VOUT = 42 V VOUT = 46 V System Efficiency www.ti.com LP8866S-Q1 SNVSBD1A – AUGUST 2020 – REVISED FEBRUARY 2021 Copyright © 2021 Texas Instruments Incorporated Submit Document Feedback 1 Product Folder Links: LP8866S-Q1 LP8866S-Q1 SNVSBD1A – AUGUST 2020 – REVISED FEBRUARY 2021 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
Similar Part No. - LP8866S-Q1_V01 |
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Similar Description - LP8866S-Q1_V01 |
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