Overview
The NCV7680PWR2G, manufactured by ON Semiconductor, is a linear current regulator and controller specifically designed for automotive LED rear combination lamps. This device features eight linear programmable constant current sources, enabling precise control over LED brightness levels. It supports two brightness levels for stop and tail illumination, as well as optional PWM control. The NCV7680PWR2G is AEC Q100 qualified, ensuring reliability in automotive environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VP) | 6 | - | 16 | V |
| Output Current per Channel | - | 35 | 75 | mA |
| Junction Temperature (TJ) | -40 | - | 150 | °C |
| Quiescent Current (8 Channels, STOP Mode) | - | 6.5 | 8.0 | mA |
| Current Matching (at 25°C) | - | ±5 | - | % |
| Overvoltage Set Back Threshold | 16.0 | 18.7 | 24.5 | V |
| Open Circuit Detection Threshold | 0.3 | 0.4 | 0.5 | V |
| PWM Frequency | 0.5 | 1.0 | 2.1 | kHz |
Key Features
- Constant Current Outputs for LED String Drive
- LED Drive Current up to 75 mA per Channel
- Open LED String Diagnostic with Open-Drain Output
- Slew Rate Control to Eliminate EMI Concerns
- Low Dropout Operation for Pre-Regulator Applications
- External Modulation Capable
- On-chip 1 kHz Tail PWM Dimming
- Single Resistor for Stop Current Set Point and Tail Dimming Set Point
- Overvoltage Set Back Power Limitation
- AEC Q100 Qualified
- 16 Lead SOICW Exposed Pad Package
- Pb-Free Device
Applications
- Rear Combination Lamps (RCL)
- Daytime Running Lights (DRL)
- Fog Lights
- Center High Mounted Stop Lamps (CHMSL) Arrays
- Turn Signal and Other Externally Modulated Applications
- LCD Back Lighting
Q & A
- What is the primary function of the NCV7680PWR2G?
The NCV7680PWR2G is a linear current regulator and controller designed for regulating and controlling LED-based rear combination lamps in automotive applications.
- How many constant current sources does the NCV7680PWR2G have?
The device features eight linear programmable constant current sources.
- What is the maximum output current per channel?
The maximum output current per channel is 75 mA.
- What is the operating temperature range of the NCV7680PWR2G?
The junction temperature range is from -40°C to 150°C.
- Does the NCV7680PWR2G support PWM dimming?
- How is the stop current set point programmed?
The stop current set point is programmed using a single resistor (RSTOP).
- What is the purpose of the overvoltage set back power limitation?
The overvoltage set back power limitation reduces the drive current during overvoltage conditions, particularly useful in low current applications without an external FET.
- Is the NCV7680PWR2G AEC Q100 qualified?
- What package type does the NCV7680PWR2G come in?
- How is open LED string detection reported?
