Catalyst Semiconductor, Inc., a provider of analog, mixed-signal devices and non-volatile memory, has expanded its LED driver lineup to introduce new products for the large-screen LED panel market. The new CAT4016 is a 16-channel, constant current source LED driver designed for billboards, advertising subtitles, meters or other large-size, general-purpose indoor and outdoor LED displays.
The CAT4016's LED channel maintains a steady current state at output voltages as low as 0.4V (when the LED current is 2mA to 100mA), which allows for higher power efficiency in application designs. The LED current can be set by an external resistor. A high-speed, four-wire serial interface with up to 25MHz frequency controls each LED channel through a shift register and latch architecture. A separate serial data output pin allows multiple devices to be used in series via the same serial interface. The CAT4016 also features thermal protection that allows the device to turn off the LED output when the die temperature exceeds the allowable limit.
As a replacement for other manufacturers' similar products, the CAT4016 offers a wider variety of packages for users to choose from, including 24-pin SOIC, TSSOP, QSOP and TQFN packages measuring only 4 x 4mm.
Features
16 channel constant current source
Serial interface up to 25MHz
Applicable LED current range is 2mA ~ 100mA
LED current is set by external resistor
The minimum differential pressure when the LED current is 30mA is 300mV
Overheat protection
24-lead SOIC, TSSOP, QSOP, and TQFN (4 x 4mm) packages
Price and availability
When the order quantity is 10,000 pieces, the unit price of the CAT4016 is $0.54. Samples are available and the expected delivery time is 6-8 weeks after receiving the order.
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