Product Summary

The DM114 is a constant current driver specifically designed for LED display applications. The value of constant current can be varied using an external resistor. The DM114 includes an 8-bit shift register, latches, and constant current drivers on a single Silicon CMOS chip.

Parametrics

DM114 absolute maximum ratings: (1)Supply Voltage, VDD: 0 to 7.0V; (2)Input Voltage, VIN: -0.4 to VDD+0.4V; (3)Output Current, IOUT: 90mA; (4)Output Voltage, VOUT: -0.3 to 17V; (5)Clock Frequency, fCLK: 25MHz; (6)GND Terminal Current, IGND: 750mA; (7)power dissipation, PD: 1.64W ( PDIP-16: Ta=25℃); 1.08W ( SOP-16: Ta=25℃); 0.8W ( SSOP-16: Ta=25℃) single-layer; 1.47W ( SSOP-16: Ta=25℃) 4-layer; (8)thermal resistance, Rth(j-a): 76℃/W (PDIP-16); 115℃/W (SOP-16); 155℃/W (SSOP-16) single-layer; 85℃/W (SSOP-16) 4-layer; (9)Storage Temperature, Tstg: -55 to 150℃.

Features

DM114 features: (1)Maximum Output Voltage: 17V; (2)Maximum Clock Frequency: 25MHz (Cascade Operation); (3)Power Supply Voltage: 3.3V to 5.0V; (4)CMOS Compatible Input; (5)Package: PDIP16, SOP16, SSOP16; (6)Package and Pin Layout: Pin layout and functionality are similar to those of the ST2221A (Each characteristic value is different); (7)Constant Current Matching: (Ta = 25℃, VDD = 5.0V); Chip-to-Chip: ±10.0%; Bit-to-Bit: ±4.0% @ IOUT = 30 to 90mA; ±6.0% @ IOUT = 20 to 30mA.

Diagrams

DM114 block diagram

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