Overview
The NCV30161MNWTXG is a constant-current buck regulator designed by onsemi for driving high power LEDs. This hysteretic step-down driver is ideal for industrial and automotive applications, requiring minimal external components. It operates with an input voltage range of 6.3 V to 40 V and features a dedicated PWM input for pulsed dimming, enabling a wide range of brightness control. The device is AEC-Q100 qualified and PPAP capable, ensuring reliability in harsh environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VIN Input Supply Voltage Range | 6.3 | - | 40 | V |
| IQ_IN Quiescent Current into VIN | 0.075 | 1.5 | 2.15 | mA |
| VCC Internal Regulator Output | 4.0 | 5.0 | 5.5 | V |
| VUV+ Under-Voltage Lock-out Threshold (VIN Rising) | 5.5 | 6.0 | 6.5 | V |
| VUV- Under-Voltage Lock-out Threshold (VIN Falling) | 5.2 | 5.6 | 6.3 | V |
| CS Regulation Upper Limit (CS Increasing, FET Turns-OFF) | 213 | 220 | 226 | mV |
| CS Regulation Lower Limit (CS Decreasing, FET Turns-ON) | 174 | 180 | 186 | mV |
| Switching Frequency Range | - | - | 2400 kHz | kHz |
| TJ Operating Junction Temperature Range | -40 | - | 125 | °C |
| TSD Thermal Shutdown | 160 | 165 | 180 | °C |
Key Features
- Adjustable LED current through a resistor connected to the CS pin
- Single pin brightness and enable/disable control using PWM
- Supports all-ceramic output capacitors and capacitor-less outputs
- Thermal shutdown protection and shorted LED protection
- Capable of 100% duty cycle operation
- Thermally enhanced DFN10 package with wettable flanks
- No control loop compensation required
- High switching frequency allows the use of smaller external components
Applications
- LED Driver
- Constant Current Source
- Automotive Lighting
- Industrial Lighting
Q & A
- What is the input voltage range of the NCV30161MNWTXG?
The input voltage range is from 6.3 V to 40 V.
- What type of control does the NCV30161MNWTXG use?
The device uses hysteretic control for current regulation.
- How is the LED current adjusted in the NCV30161MNWTXG?
The LED current is adjusted through a resistor connected to the CS pin.
- What is the purpose of the DIM/EN pin?
The DIM/EN pin is used for PWM dimming control and to enable/disable the power MOSFET and LED array.
- What are the thermal protection features of the NCV30161MNWTXG?
The device features thermal shutdown protection and shorted LED protection.
- What is the maximum operating junction temperature of the NCV30161MNWTXG?
The maximum operating junction temperature is 125°C.
- Is the NCV30161MNWTXG AEC-Q100 qualified?
Yes, the device is AEC-Q100 qualified and PPAP capable.
- What type of package does the NCV30161MNWTXG come in?
The device comes in a DFN10 3 mm x 3 mm package with wettable flanks.
- What is the recommended decoupling capacitor for the VIN pin?
A 10 μF ceramic capacitor is recommended for the VIN pin.
- How does the NCV30161MNWTXG handle over-current protection?
The device turns off the FET and prevents it from turning on again until power is recycled if the voltage on the CS pin exceeds the over-current protection limit.
