LP8862-Q1 Series

High-performance 2-channel LED driver for Automotive lighting

Catalog

High-performance 2-channel LED driver for Automotive lighting

Part	Voltage - Supply (Min) [Min]	Voltage - Supply (Max) [Max]	Qualification	Grade	Applications	Number of Outputs	Current - Output / Channel	Internal Switch(s)	Mounting Type	Frequency [Max]	Frequency [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Dimming	Type	Voltage - Output	Package / Case	Package / Case [custom]	Package / Case	Topology	Supplier Device Package	Utilized IC / Part	Features	Supplied Contents	Outputs and Type	Outputs and Type	Voltage - Input [Min]	Voltage - Input [Max]
Texas Instruments LP8862QPWPRQ1	4.5 V	40 V	AEC-Q100	Automotive	Backlight	2	160 mA		Surface Mount	2.2 MHz	300 kHz	-40 °C	125 °C	PWM	DC DC Regulator	45 V	20-PowerTSSOP	4.4 mm	0.173 in	SEPIC Step-Up (Boost)	20-HTSSOP
Texas Instruments LP8862Q1EVM							160 mA									45 V						LP8862-Q1	Dimmable	Board(s)	2	Non-Isolated	4.5 V	40 V

Catalog

High-performance 2-channel LED driver for Automotive lighting

Key Features

• Qualified for Automotive ApplicationsAEC-Q100 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 VTwo High-Precision Current SinksCurrent Matching 1% (Typical)LED String Current up to 160 mA per 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 FeaturesFault OutputInput Voltage OVP, UVLO, and OCPOpen and Shorted LED Fault DetectionThermal ShutdownMinimum Number of External ComponentsQualified for Automotive ApplicationsAEC-Q100 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 VTwo High-Precision Current SinksCurrent Matching 1% (Typical)LED String Current up to 160 mA per 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 FeaturesFault OutputInput Voltage OVP, UVLO, and OCPOpen and Shorted LED Fault DetectionThermal ShutdownMinimum Number of External Components

Description

The LP8862-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with integrated DC-DC converter. The DC-DC supports both boost and SEPIC modes of operation. The device has two high-precision current sinks that can provide high dimming ratio brightness control with a PWM input signal. The boost/SEPIC converter has an adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes power consumption by adjusting the voltage to the lowest sufficient level in all conditions. DC-DC supports spread spectrum for switching frequency and an external synchronization with a dedicated pin. A wide-range adjustable frequency allows the LP8862-Q1 to avoid disturbance for AM radio band. The input voltage range for the LP8862-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump conditions. The device supports PWM brightness dimming ratio of 10 000:1 for 100-Hz input PWM frequency. The LP8862-Q1 integrates extensive fault detection features. The device has an option to drive an external p-FET to disconnect the input supply from the system in the event of a fault. This feature also reduces inrush current and standby power consumption. The LP8862-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with integrated DC-DC converter. The DC-DC supports both boost and SEPIC modes of operation. The device has two high-precision current sinks that can provide high dimming ratio brightness control with a PWM input signal. The boost/SEPIC converter has an adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes power consumption by adjusting the voltage to the lowest sufficient level in all conditions. DC-DC supports spread spectrum for switching frequency and an external synchronization with a dedicated pin. A wide-range adjustable frequency allows the LP8862-Q1 to avoid disturbance for AM radio band. The input voltage range for the LP8862-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump conditions. The device supports PWM brightness dimming ratio of 10 000:1 for 100-Hz input PWM frequency. The LP8862-Q1 integrates extensive fault detection features. The device has an option to drive an external p-FET to disconnect the input supply from the system in the event of a fault. This feature also reduces inrush current and standby power consumption.