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Onsemi NCV78723 | Demoboard Image sensor demo
High Efficiency Buck Dual LED Driver with Integrated Current Sensing for Automotive Front Lighting
Overview
| Topology | Buck Converter |
| Input voltage | 8-68 V |
| Switching frequency | 8-12 kHz |
| Output 1 | 60 V / 1.79 A |
| IC revision | 2 |
Description
The NCV78723 is a single-chip and high efficient Buck Dual LEDDriver designed for automotive front lighting applications like highbeam, low beam, DRL (daytime running light), turn indicator, foglight, static cornering, etc. The NCV78723 is in particular designed forhigh current LEDs and provides a complete solution to drive 2 LEDstrings of up-to 60 V. It includes 2 independent current regulators forthe LED strings and required diagnostic features for automotive frontlighting with a minimum of external components – the chip doesn’tneed any external sense resistor for the buck current regulation.The available output current and voltages can be customized perindividual LED string. When more than 2 LED channels are requiredon 1 module, then 2, 3 or more devices NCV78723 can be combined;also with NCV78713 device – the derivative of the NCV78723incorporating Buck Single LED Driver. Thanks to the SPIprogrammability, one single hardware configuration can supportvarious application platforms.
Features
Single Chip
- Buck Topology
- 2 LED Strings up-to 60 V
- High Current Capability up to 1.6 A DC per Output
- High Overall Efficiency
- Minimum of External Components
- Integrated High Accuracy Current Sensing
- Integrated Switched Mode Buck Current Regulator
- Average Current Regulation through the LEDs
- High Operating Frequencies to Reduce Inductor Sizes
- Low EMC Emission for LED Switching and Dimming
- SPI Interface for Dynamic Control of System Parameters
- Fail Safe Operating (FSO) Mode, Stand-Alone Mode
Typical applications
- DRL
- Low Beam
- High Beam
- Turn Indicator
- Static Cornering
- Position or Park Light
- Fog
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins | PCB/Cable/Panel | Modularity | Type | IR(A) | ISAT(A) | fres(MHz) | ISAT,10%(A) | ISAT,30%(A) | IR,40K(A) | IRP,40K(A) | RDC max.(mΩ) | C | VR(V (DC)) | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | DF(%) | Pitch(mm) | Ø D(mm) | L(mm) | Packaging | xPxC | Variant | Ports | Shielding | Tab | EMI | Application System | Working Voltage(V (AC)) | Gender | Version | VIN | VOut1(V) | IOut1(A) | VOut2(V) | IOut2(A) | VOut3(V) | IOut3(A) | L(µH) | n | VT(V (AC)) | Size | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-TPC SMT Tiny Power Inductor, 2, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TPC SMT Tiny Power Inductor | Pins2 | – | – | – | Rated Current0.925 A | Saturation Current0.7 A | Self Resonant Frequency20 MHz | – | – | – | – | DC Resistance185 mΩ | – | – | – | – | – | – | – | – | Length4.8 mm | – | – | – | – | ShieldingShielded | – | – | – | – | – | – | – | – | – | – | – | – | – | Inductance22 µH | – | – | Size4828 | MountSMT | ||||
 | WE-PD SMT Power Inductor, 2, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PD SMT Power Inductor | Pins2 | – | – | – | Rated Current2.5 A | – | Self Resonant Frequency4.3 MHz | Saturation Current @ 10%3.1 A | Saturation Current @ 30%3.8 A | Rated Current2.5 A | Performance Rated Current3.2 A | DC Resistance110 mΩ | – | – | – | – | – | – | – | – | Length12 mm | – | – | – | – | ShieldingShielded | – | – | – | – | – | VersionStandard | – | – | – | – | – | – | – | Inductance100 µH | – | – | Size1210 | MountSMT | ||||
 | WR-TBL Series 3221 - 3.50 mm Horizontal PCB Header, 3, PCB Header | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 3221 - 3.50 mm Horizontal PCB Header | Pins3 | PCB/Cable/PanelCable | ModularityNo | TypePCB Header | Rated Current10.5 A | – | – | – | – | – | – | – | – | – | – | – | – | – | Pitch3.5 mm | – | Length11.9 mm | PackagingBox | – | – | – | – | – | – | – | Working Voltage300 V (AC) | – | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT | |||
 | WR-TBL Series 322 - 3.81 mm Horizontal PCB Header, 3, PCB Header | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 322 - 3.81 mm Horizontal PCB Header | Pins3 | PCB/Cable/PanelCable | ModularityNo | TypePCB Header | Rated Current10.5 A | – | – | – | – | – | – | – | – | – | – | – | – | – | Pitch3.81 mm | – | Length12.62 mm | PackagingBox | – | – | – | – | – | – | – | Working Voltage300 V (AC) | – | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT | |||
| WR-TBL Series 3221 - 3.50 mm Horizontal PCB Header, 4, PCB Header | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 3221 - 3.50 mm Horizontal PCB Header | Pins4 | PCB/Cable/PanelCable | ModularityNo | TypePCB Header | Rated Current10.5 A | – | – | – | – | – | – | – | – | – | – | – | – | – | Pitch3.5 mm | – | Length15.4 mm | PackagingBox | – | – | – | – | – | – | – | Working Voltage300 V (AC) | – | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT | ||
| WR-TBL Series 322 - 3.81 mm Horizontal PCB Header, 4, PCB Header | Simulation– | Downloads6 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-TBL Series 322 - 3.81 mm Horizontal PCB Header | Pins4 | PCB/Cable/PanelCable | ModularityNo | TypePCB Header | Rated Current10.5 A | – | – | – | – | – | – | – | – | – | – | – | – | – | Pitch3.81 mm | – | Length16.43 mm | PackagingBox | – | – | – | – | – | – | – | Working Voltage300 V (AC) | – | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT | ||
 | WR-DSUB PCB, 9, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-DSUB PCB | Pins9 | PCB/Cable/PanelPCB | – | TypeAngled | Rated Current3 A | – | – | – | – | – | – | – | – | – | – | – | – | – | Pitch2.77 mm | – | Length30.81 mm | PackagingTray | – | Variantwith Hex Screw | – | – | – | – | – | Working Voltage125 V (AC) | GenderFemale | VersionStandard | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | WE-PoE Power over Ethernet Transformer, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PoE Power over Ethernet Transformer | – | – | – | – | – | Saturation Current0.7 A | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Length16.3 mm | – | – | – | – | – | – | – | – | – | – | VersionFlyback | Input Voltage 36 - 57 V (DC) | Output Voltage 15 V | Output Current 10.47 A | Output Voltage 25 V | Output Current 20.47 A | Output Voltage 35 V | Output Current 30.47 A | Inductance210 µH | Turns Ratio6:1:1:1:1.75 | Insulation Test Voltage1500 V (AC) | SizeER14.5/6 | MountSMT | |||
 | WCAP-ATUL Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATUL Aluminum Electrolytic Capacitors | – | – | – | – | – | – | – | – | – | – | – | – | Capacitance68 µF | Rated Voltage100 V (DC) | Endurance 7000 | Ripple Current460 mA | Leakage Current68 µA | Dissipation Factor9 % | Pitch5 mm | Diameter10 mm | Length16 mm | PackagingAmmopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||||
 | WR-MJ Cat 3 Modular Jacks – THT, –, – | Simulation– | Downloads7 files | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-MJ Cat 3 Modular Jacks – THT | – | – | – | TypeHorizontal | Rated Current1.5 A | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | PackagingTray | Number of Pins (xPxC)8P8C | – | Ports1x1 | ShieldingPlastic | Tab PositionUp | EMI FingersNo | Application SystemCAT 3 | Working Voltage120 V (AC) | – | – | – | – | – | – | – | – | – | – | – | – | – | MountTHT |