STEVAL-ILL046V2 Datasheet, PDF (1/4 Pages) STMicroelectronics – Thermal shutdown

STEVAL-ILL046V2
HB LED driver with inhibit based on the ST1CC40 in an SO-8
BW package
Data brief
Features
 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
Description
The STEVAL-ILL046V2 evaluation 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 = 100 mV/ILED.
The STEVAL-ILL046V2 is provided with 660 mA
by connecting a 150 mW 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 evaluation 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.
May 2016
DocID024105 Rev 2
For further information contact your local STMicroelectronics sales
office
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