LP8864S-Q1 Series

Automotive display LED-backlight driver with four 200-mA channels

Catalog

Automotive display LED-backlight driver with four 200-mA channels

Part	Current - Output / Channel	Grade	Applications	Type	Qualification	Mounting Type	Operating Temperature [Min]	Operating Temperature [Max]	Number of Outputs	Voltage - Supply (Max)	Supplier Device Package	Topology	Dimming	Frequency [Min]	Frequency [Max]	Package / Case	Voltage - Output [Min]	Voltage - Output [Max]	Voltage - Supply (Min) [Min]	Voltage - Input [Min]	Voltage - Input [Max]	Voltage - Output	Supplied Contents	Utilized IC / Part	Outputs and Type	Outputs and Type	Features	Voltage - Supply (Max) [Max]	Package / Case
Texas Instruments LP8864SQRHBRQ1	150 mA	Automotive	Backlight	DC DC Controller	AEC-Q100	Surface Mount Wettable Flank	-40 °C	125 °C	4	5.5 V	32-VQFN (5x5)	SEPIC Step-Up (Boost)	Analog I2C PWM	100 kHz	2.2 MHz	32-VFQFN Exposed Pad	0 VDC	48 V	3 V
Texas Instruments LP8864EVM	200 mA																			3 V	48 V	48 V	Board(s) Cable(s)	LP8864-Q1	4	Non-Isolated	Dimmable
Texas Instruments LP8864QDCPRQ1	200 mA	Automotive	Backlight	DC DC Controller	AEC-Q100	Surface Mount	-40 °C	125 °C	4		38-HTSSOP	SEPIC Step-Up (Boost)	PWM	100 kHz	2.2 MHz	38-PowerTFSOP	0 VDC	48 V	3 V									48 V	0.173 in 4.4 mm
Texas Instruments LP8864SQDCPRQ1	150 mA	Automotive	Backlight	DC DC Controller	AEC-Q100	Surface Mount	-40 °C	125 °C	4		38-HTSSOP	SEPIC Step-Up (Boost)	PWM	100 kHz	2.2 MHz	38-PowerTFSOP	0 VDC	48 V	3 V									48 V	0.173 in 4.4 mm

Catalog

Automotive display LED-backlight driver with four 200-mA channels

Key Features

• AEC-Q100 qualified for automotive applications:Device temperature grade 1: –40°C to +125°C, TADevice HBM ESD classification level 2Device CDM ESD classification level C4BInput voltage operating range 3V to 48VFour high-precision current sinksUp to 150mA DC current for each current sinkCurrent matching 1% (typical)Dimming ratio 32 000:1 using 152Hz LED output PWM frequencyUp to 16-bit LED dimming resolution with I2C, or PWM input8 Configurable LED strings configurationAuto-phase shift PWM dimming12-bit analog dimmingUp to 48V VOUT boost or SEPIC DC/DC controllerSwitching frequency 100kHz to 2.2MHzBoost spread spectrum for reduced EMIBoost sync input to set boost switching frequency from an external clockOutput voltage automatically discharged when boost is disabledExtensive fault diagnosticsAEC-Q100 qualified for automotive applications:Device temperature grade 1: –40°C to +125°C, TADevice HBM ESD classification level 2Device CDM ESD classification level C4BInput voltage operating range 3V to 48VFour high-precision current sinksUp to 150mA DC current for each current sinkCurrent matching 1% (typical)Dimming ratio 32 000:1 using 152Hz LED output PWM frequencyUp to 16-bit LED dimming resolution with I2C, or PWM input8 Configurable LED strings configurationAuto-phase shift PWM dimming12-bit analog dimmingUp to 48V VOUT boost or SEPIC DC/DC controllerSwitching frequency 100kHz to 2.2MHzBoost spread spectrum for reduced EMIBoost sync input to set boost switching frequency from an external clockOutput voltage automatically discharged when boost is disabledExtensive fault diagnostics

Description

The LP8864S-Q1 is an automotive high-efficiency LED driver with boost controller. The Four 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 LP8864S-Q1 to avoid disturbance for AM radio band. The LP8864S-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 LP8864S-Q1 is an automotive high-efficiency LED driver with boost controller. The Four 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 LP8864S-Q1 to avoid disturbance for AM radio band. The LP8864S-Q1 supports built-in hybrid PWM dimming and analog current dimming, which reduces EMI, extends the LED lifetime, and increases the total optical efficiency.