STEVAL-ILL046V2HB LED driver with inhibit based on the ST1CC40 in an SO-8 BW package
The STEVAL-ILL046V2 demonstration board is based on the ST1CC40, which is an 850 kHz fixed switching frequency monolithic step-down DC-DC converter designed to operate as a precise constant current source with an adjustable current capability of up to 3 A DC.
In closed loop operation, the ST1CC40 feedback pin voltage is 100 mV, thus the sensing resistor calculation is expressed as Rs = 100mV/ILED
The STEVAL-ILL046V2 is provided with 660 mA by connecting a 150 mΩ sensing resistor to the feedback pin.
The overall application size is minimized, thanks to the high switching frequency and ceramic output capacitor compatibility.
The STEVAL-ILL046V2 demonstration board is fully protected against overheating, overcurrent and output short-circuit.
The inhibit mode minimizes the current consumption in standby (6 μA) to maximize battery life in portable devices.
- 3 to 18 V operating input voltage range
- 850 kHz fixed switching frequency
- 100 mV (typ) current sense voltage drop
- 6 μA standby current in inhibit mode
- ±7% output current accuracy
- Synchronous rectification
- Embedded compensation network
- Internal current limiting
- Ceramic output capacitor compliant
- Thermal shutdown
- RoHS compliant
DB1863: HB LED driver with inhibit based on the ST1CC40 in an SO-8 BW package
Board Manufacturing Specification
STEVAL-ILL046V2 gerber files
Bill of Materials
Sample & BuyTop
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