16位驅動ic 主要用于led屏幕及護欄管

高性價比新版通用16位恒流驅動ic，dm134

iout = 5~90ma, voutmax) = 17v n 絕佳的恒流精度：信道對信道：±3%；芯片對芯片：±6% n 具獨步全球的led開／短路在線自檢功能：100ns(min) 的快速偵測反饋， 無須切換操作模式，不影響畫面品質 n 具過溫斷電功能(180°c) n 輸出通道分時使能，可有效降低emi n 與dm134／5／a、st2221c完全兼容，新推出sop封裝(腳間距1.0 mm)

general description
the dm134b、dm135b are constant current drivers specifically designed for led display applications. the value of constant current can be varied using an external resistor. the devices include a 16-bit shift register, latches, and constant current drivers on a single silicon cmos chip.

features
3.3v~5v cmos compatible input maximum clock frequency: 25mhz (cascade operation) maximum output voltage: package: package and pin layout: 17v dip24, sop24, ssop24, qfn32 pin layout and functionality are similar to those of the st2221c. (each characteristic value is different.) constant current matching: (ta = 25°c、vdd = 5.0v) chip-to-chip: ± 10.0% bit-to-bit: dm134b:± 4.0% @ iout = 30 ~ 90ma ± 6.0% @ iout = 20 ~ 30ma dm135b:± 4.0% @ iout = 20 ~ 60ma ± 6.0% @ iout = 5 ~ 20ma

16-bit constant current led drivers