Overview
The NCV78763DQ9R2G is a single-chip, highly efficient smart power ballast and dual LED driver designed specifically for automotive front lighting applications. It is part of the NCV78763 series from onsemi, tailored for high current LEDs and offers a comprehensive solution to drive two LED strings up to 60 V. The device features two internal independent buck switch channel outputs, requiring a minimum of external components. It is suitable for various automotive lighting functions such as high beam, low beam, daytime running light (DRL), turn indicator, fog light, and static cornering.
Key Specifications
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Battery Supply voltage | VBB | −0.3 | 60 | V | |
| LED supply voltage | VBOOST | −0.3 | 68 | V | |
| Logic Supply voltage | VDD | −0.3 | 3.6 | V | |
| MOSFET Gate driver supply voltage | VDRIVE | −0.3 | 12 | V | |
| Output Current per Channel | I_O | 1.6 A | A | ||
| Switching Frequency | f_SW | 350 | kHz | ||
| Package Type | SSOP-36 EP | ||||
| Thermal Resistance (Junction to Case) | θ_JC | 3.5 | °C/W |
Key Features
- Single Chip Boost-Buck Solution
- Two LED Strings up to 60 V
- High Current Capability up to 1.6 A DC per Output
- High Overall System Efficiency
- Minimum of External Components
- Active Input Filter with Low Current Ripple from Battery
- Integrated Switched Mode Buck Current Regulator
- Integrated Boost Current-mode Controller
- Programmable Input Current Limitation
- Average Current Regulation Through the LEDs
- High Operating Frequencies to Reduce Inductor Sizes
- Integrated PWM Dimming with Wide Frequency Range
- Low EMC Emission for LED switching and dimming
- SPI Interface for Dynamic Control of System Parameters
Applications
- Front Lighting High Beam and Low Beam
- Daytime Running Light (DRL)
- Position or Park light
- Turn Indicator
- Fog Light and Static Cornering
Q & A
- What is the NCV78763DQ9R2G used for?
The NCV78763DQ9R2G is used for automotive front lighting applications such as high beam, low beam, daytime running light (DRL), turn indicator, fog light, and static cornering.
- What is the maximum output current per channel?
The maximum output current per channel is up to 1.6 A DC.
- What is the maximum LED supply voltage?
The maximum LED supply voltage is 68 V.
- Does the device support multiple LED strings?
Yes, the device can drive two LED strings up to 60 V and can be combined with multiple devices for more than two LED channels.
- What is the package type of the NCV78763DQ9R2G?
The package type is SSOP-36 EP.
- What is the thermal resistance of the package?
The thermal resistance (junction to case) is 3.5 °C/W for the SSOP-36 EP package.
- Does the device have integrated diagnostic features?
Yes, the device includes on-chip diagnostic features for automotive front lighting, easing safety monitoring from the microcontroller.
- How can the device be programmed?
The device is programmable via an SPI interface, allowing dynamic control of system parameters.
- What is the switching frequency of the device?
The typical switching frequency is 350 kHz.
- Is the device Pb-free?
Yes, the NCV78763DQ9R2G is a Pb-free device.
