Zetex launched a new driver series to meet the needs of the next generation LED

Analog signal processing and power management solutions supplier Zetex Semiconductors (Zetex) company, recently launched three models of flexible LED driver provides advanced performance of high brightness LED products required for the next generation of designers. The new ZXLD132X inductor DC-DC converter family, can be in the buck, boost and buck / boost configuration, driving a single or multiple current ranging from 700mA to 1.5A LED. These drives use a compact 3 x 4 mm DFN package to reduce the circuit footprint of existing solutions by half.

These new chips using innovative variable "switch" time control circuit, and an adjustable peak switch current limit, control than other PFM solutions easier. These drives also ensure that the peak current of the LED current and inductor can be accurately and independently set.

ZXLD132X feedback control circuit has good load and current regulation function, wide temperature range and can carry out the battery life can be used across - 40 degrees C to 125 degrees C, the typical current stability of +/-3%. Simply introduce the DC voltage signal, the LED current can be reduced to 10% from the default value of; if the PWM input, can be adjusted to the low of 2%.

Integration high ZXLD132X LED driver has perfect thermal control circuit to monitor external thermal control operation. When the temperature exceeds the preset limit, it will decrease the output current linearly. Only a low level of DC voltage signal is introduced, the components can be switched off.

Future Lighting Solutions Patrick Durand global application manager said: "like Luxeon K2 for a class of the next generation of high brightness LED products, often need to drive performance more stable, so as to achieve the maximum lumen output. Zetex latest LED driver is designed to provide the desired output current performance, more importantly, simplify, reflecting the higher ease of use. "

Zetex vice president of Asia Hu Guangfa said: "through the DC-DC converter, a precise and stable output current of the current monitor, thermal control circuit and the strong performance of 2A NPN switch transistor, DFN package integrated into small, we can let the customer reflect the maximum lumen output from the most advanced LED technology. "

As the number one in the series of products, ZXLD1320 can drive the buck in the input voltage range of 4V to 18V, LED provides 1.5A continuous current. The maximum power of the component can be 24W, depending on the supply voltage and the external component selection. It can be used in halogen lamp replacement applications and battery powered applications.

ZXLD1321 is a step-up drive, can operate in the 1V to 12V input voltage range, LED current 1A. ZXLD1322 is a buck / boost driver that provides 700mA current in the 2.5V to 15V input voltage range. These two components are suitable for high power LED flashlight, LED backup lighting and general LED driver applications.

Source: Zetex Semiconductors