General Description

The DM134、DM135、DM136 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

• 5V CMOS Compatible Input

• Maximum Clock Frequency: 25MHz (Cascade Operation)

• Maximum Output Voltage: 17V

• Package: DIP24, SOP24, SSOP24, QFN32,

              TSSOP24-exposedPAD(DM135)

• Package and Pin Layout: Pin layout and functionality are similar to those of the ST2221C.

                    (Each characteristic value is different.)

z Constant Current Matching: (Ta = 25°C、VDD = 5.0V)

                                       Chip-to-Chip: ± 10.0%

                                       Bit-to-Bit:

                                          DM134: ± 4.0% @ IOUT = 30 ~ 90mA

                                                     ± 6.0% @ IOUT = 20 ~ 30mA

                                          DM135: ± 4.0% @ IOUT = 10 ~ 50mA

                                                     ± 6.0% @ IOUT = 5 ~ 10mA

                                          DM136: ± 4.0% @ IOUT = 3 ~ 15mA