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.)
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