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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
- Static Cornering
- Position or Park Light
- Fog
- Turn Indicator
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | Application | PCB/Cable/Panel | Modularity | Application System | IR (A) | ISAT (A) | fres (MHz) | IRP,40K (A) | RDC max. (mΩ) | C | VR (V (DC)) | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | DF (%) | Pitch (mm) | Ø D (mm) | L (mm) | Packaging | Version | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | VOut3 (V) | IOut3 (A) | L (µH) | n | VT (V (AC)) | Size | Mount | Pins | xPxC | Gender | Type | Operating Temperature | Working Voltage (V (AC)) | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 691322110003 | SPEC | – | 6 files | WR-TBL Series 3221 - 3.50 mm Horizontal PCB Header | Pluggable | PCB | No | – | 10.5 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | – | 3.5 | – | 11.9 | Box | – | – | – | – | – | – | – | – | – | – | – | – | THT | 3 | – | – | Horizontal | -40 °C up to +105 °C | 300 | |
| 691322110004 | SPEC | – | 6 files | WR-TBL Series 3221 - 3.50 mm Horizontal PCB Header | Pluggable | PCB | No | – | 10.5 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | – | 3.5 | – | 15.4 | Box | – | – | – | – | – | – | – | – | – | – | – | – | THT | 4 | – | – | Horizontal | -40 °C up to +105 °C | 300 | |
 | 691322310003 | SPEC | – | 6 files | WR-TBL Series 322 - 3.81 mm Horizontal PCB Header | Pluggable | PCB | No | – | 10.5 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | – | 3.81 | – | 12.62 | Box | – | – | – | – | – | – | – | – | – | – | – | – | THT | 3 | – | – | Horizontal | -40 °C up to +105 °C | 300 | |
| 691322310004 | SPEC | – | 6 files | WR-TBL Series 322 - 3.81 mm Horizontal PCB Header | Pluggable | PCB | No | – | 10.5 | – | – | – | – | – | – | – | -40 °C up to +105 °C | – | – | – | 3.81 | – | 16.43 | Box | – | – | – | – | – | – | – | – | – | – | – | – | THT | 4 | – | – | Horizontal | -40 °C up to +105 °C | 300 | |
 | 744043220 | SPEC | 8 files | WE-TPC SMT Tiny Power Inductor | – | – | – | – | 0.925 | 0.7 | 20 | – | 185 | – | – | – | – | – | – | – | – | – | 4.8 | – | – | – | – | – | – | – | – | – | 22 | – | – | 4828 | SMT | 2 | – | – | – | -40 °C up to +125 °C | – | ||
 | 7447709101 | SPEC | 8 files | WE-PD SMT Power Inductor | – | – | – | – | 2.5 | 3.1 | – | 3.2 | 110 | – | – | – | – | – | – | – | – | – | 12 | – | Standard | – | – | – | – | – | – | – | 100 | – | – | 1210 | – | – | – | – | – | -40 °C up to +125 °C | – | ||
 | 749119250 | SPEC | – | 8 files | WE-PoE Power over Ethernet Transformer | – | – | – | – | – | 0.7 | – | – | – | – | – | – | -40 °C up to +125 °C | – | – | – | – | – | 16.3 | – | Flyback | 36 - 57 V (DC) | 5 | 0.47 | 5 | 0.47 | 5 | 0.47 | 210 | 6:1:1:1:1.75 | 1500 | ER14.5/6 | SMT | – | – | – | – | -40 °C up to +125 °C | – | |
 | 860040875003 | SPEC | 7 files | WCAP-ATUL Aluminum Electrolytic Capacitors | – | – | – | – | – | – | – | – | – | 68 µF | 100 | 7000 | -40 °C up to +105 °C | 460 | 68 | 9 | 5 | 10 | 16 | Ammopack | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | ||
 | 618009231321 | SPEC | – | 6 files | WR-DSUB 10.30 mm Female Angled PCB Connector w. Hex Screw | – | PCB | – | – | 3 | – | – | – | – | – | – | – | – | – | – | – | 2.77 | – | 30.81 | Tray | Standard | – | – | – | – | – | – | – | – | – | – | – | – | 9 | – | Female | Angled | -55 °C up to +105 °C | 125 | |
 | 615008148521 | SPEC | – | 7 files | WR-MJ Modular Jack Horizontal Plastic 8P8C Tab Up | – | – | – | CAT 3 | 1.5 | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Tray | – | – | – | – | – | – | – | – | – | – | – | – | THT | – | 8P8C | – | Horizontal | -40 °C up to +85 °C | 120 |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 691322110003 | SPEC | – |
| 691322110004 | SPEC | – |
| 691322310003 | SPEC | – |
| 691322310004 | SPEC | – |
| 744043220 | SPEC | |
| 7447709101 | SPEC | |
| 749119250 | SPEC | – |
| 860040875003 | SPEC | |
| 618009231321 | SPEC | – |
| 615008148521 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | Application | PCB/Cable/Panel | Modularity | Application System | IR (A) | ISAT (A) | fres (MHz) | IRP,40K (A) | RDC max. (mΩ) | C | VR (V (DC)) | Endurance (h) | Operating Temperature | IRIPPLE (mA) | ILeak (µA) | DF (%) | Pitch (mm) | Ø D (mm) | L (mm) | Packaging | Version | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | VOut3 (V) | IOut3 (A) | L (µH) | n | VT (V (AC)) | Size | Mount | Pins | xPxC | Gender | Type | Operating Temperature | Working Voltage (V (AC)) | Samples |
|---|