Product Brochures

LX7165™ is a digitally controlled step-down regulator IC with integrated high side P-Channel MOSFET and low side N-Channel MOSFET, an I2C serial interface port, and fault monitoring functions. The proprietary constant frequency hysteretic control allows for minimal filter components due to its fast transient response. At lower currents, the switching frequency is lowered (PFM mode) to optimize light load efficiency and extend battery life in mobile applications.

The LX7165 will operate from 5V or 3.3V rails. The I²C serial interface allows for on the fly output voltage margining in addition to power monitoring reporting.

Cycle-by-cycle current limiting protects the regulator against over-current conditions. The LX7165 operates in hiccup mode to further enhance the robustness of the converter for heavy over-load or short-circuit faults and it automatically recovers once the fault clears. Thermal protection shuts down the regulator under an over-temperature condition.

FEATURES:
o Operational Input Supply Voltage Range: 3V - 5.5V (short durations to 6.5V)
o Patented Hysteretic Control Technology
o Increased Speed and Reduced Device Bias Currentsl Technology
o Integrated PMOS and NMOS in a Ball Wafer Scale Package
o I²C Serial Interface Port

The LX1977 is a CMOS based Ambient Light Sensor (ALS) with an I2C compatible SMBus interface. This device is ideal for controlling display back lighting systems of low cost consumer products such as TV, portable computers, handheld devices, or medical devices. The LX1977 is available in an 8-pin MSOP package, and is operational over the ambient temperature range -40?C to 85?C. Features: -Human Eye Spectral Response -Very Low IR Sensitivity -12-bit Resolution -5% Typical Accuracy -Rejection to 50/60Hz Interference -Programmable Integration Time -Programmable Interrupt Pin -I2C compatible SMBus Interface -Easy Processor Interface -No Optical Filter Needed

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