LP8861-Q1 Series

Low-EMI high-performance 4-channel LED driver for Automotive lighting

Catalog

Low-EMI high-performance 4-channel LED driver for Automotive lighting

Part	Voltage - Input [Min]	Voltage - Input [Max]	Voltage - Output	Outputs and Type	Outputs and Type	Utilized IC / Part	Current - Output / Channel	Features	Supplied Contents	Number of Outputs	Supplier Device Package	Voltage - Supply (Max) [Max]	Voltage - Supply (Min) [Min]	Internal Switch(s)	Grade	Mounting Type	Topology	Frequency [Max]	Frequency [Min]	Package / Case	Package / Case [custom]	Package / Case	Type	Dimming	Qualification	Operating Temperature [Min]	Operating Temperature [Max]	Applications
Texas Instruments LP8861Q1EVM	4.5 V	40 V	45 V	4	Non-Isolated Outputs	LP8861-Q1	100 mA	Dimmable	Board(s)
Texas Instruments LP8861QPWPRQ1			45 V				100 mA			4	20-HTSSOP	40 V	4.5 V		Automotive	Surface Mount	SEPIC Step-Up (Boost)	2.2 MHz	300 kHz	20-PowerTSSOP	4.4 mm	0.173 in	DC DC Regulator	PWM	AEC-Q100	-40 °C	125 °C	Backlight

Catalog

Low-EMI high-performance 4-channel LED driver for Automotive lighting

Key Features

• Qualified for Automotive ApplicationsAECQ100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureInput Voltage Operating Range 4.5 V to 40 VFour High-Precision Current SinksCurrent Matching 1% (Typical)LED String Current up to 100 mA/ChannelDimming Ratio of 10 000:1 at 100 HzIntegrated Boost/SEPIC Converter for LED String PowerOutput Voltage up to 45 VSwitching Frequency 300 kHz to 2.2 MHzSwitching Synchronization InputSpread Spectrum for Lower EMIPower-Line FET Control for Inrush Current Protection and Standby Energy SavingExtensive Fault Detection and Tolerance FeaturesFault OutputInput Voltage OVP, UVLO, and OCPOpen and Shorted LED Fault DetectionAutomatic LED Current Reduction With External Temperature SensorThermal ShutdownMinimum Number of External ComponentsQualified for Automotive ApplicationsAECQ100 Qualified With the Following Results:Device Temperature Grade 1: –40°C to +125°C Ambient Operating TemperatureInput Voltage Operating Range 4.5 V to 40 VFour High-Precision Current SinksCurrent Matching 1% (Typical)LED String Current up to 100 mA/ChannelDimming Ratio of 10 000:1 at 100 HzIntegrated Boost/SEPIC Converter for LED String PowerOutput Voltage up to 45 VSwitching Frequency 300 kHz to 2.2 MHzSwitching Synchronization InputSpread Spectrum for Lower EMIPower-Line FET Control for Inrush Current Protection and Standby Energy SavingExtensive Fault Detection and Tolerance FeaturesFault OutputInput Voltage OVP, UVLO, and OCPOpen and Shorted LED Fault DetectionAutomatic LED Current Reduction With External Temperature SensorThermal ShutdownMinimum Number of External Components

Description

The LP8861-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with integrated boost/SEPIC converter. It has four high-precision current sinks that can provide high dimming ratio brightness control with a PWM input signal. The boost/SEPIC converter has adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes the power consumption by adjusting the voltage to lowest sufficient level in all conditions. The boost/SEPIC converter supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the LP8861-Q1 to avoid disturbance for AM radio band. The LP8861-Q1 has an option to drive an external p-FET to disconnect the input supply from the system in the event of a fault and reduce inrush current and standby power consumption. The device can reduce LED current based on temperature measured with external NTC sensor to protect LED from overheating and extend LED lifetime. The input voltage range for the LP8861-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump condition. The LP8861-Q1 integrates extensive fault detection and protection features. The LP8861-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with integrated boost/SEPIC converter. It has four high-precision current sinks that can provide high dimming ratio brightness control with a PWM input signal. The boost/SEPIC converter has adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes the power consumption by adjusting the voltage to lowest sufficient level in all conditions. The boost/SEPIC converter supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the LP8861-Q1 to avoid disturbance for AM radio band. The LP8861-Q1 has an option to drive an external p-FET to disconnect the input supply from the system in the event of a fault and reduce inrush current and standby power consumption. The device can reduce LED current based on temperature measured with external NTC sensor to protect LED from overheating and extend LED lifetime. The input voltage range for the LP8861-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump condition. The LP8861-Q1 integrates extensive fault detection and protection features.