DM114 Integrated Circuit Chip 8-Bit CONSTANT CURRENT LED DRIVERS with 3.3v ~ 5v supply voltage
chip in electronics
,integrated components
DM114,DM115
8-Bit CONSTANT CURRENT LED DRIVERS with 3.3v ~ 5v Supply Voltage
General Description
The DM114,DM115 is the constant current driver specifically designed for LED display applications. The value of constant current can be varied using an external resistor. The devices include an 8-bit shift register, latches, and constant current drivers on a single Silicon CMOS chip.
Features
• Maximum Output Voltage: 17V
• Maximum Clock Frequency: 25MHz (Cascade Operation)
• Power Supply Voltage: 3.3V to 5.0V
• CMOS Compatible Input
• Package: PDIP16, SOP16, SSOP16
• Package and Pin Layout: Pin layout and functionality are similar to those of the ST2221A.
(Each characteristic value is different.)
• Constant Current Matching: (Ta = 25°C,VDD = 5.0V)
Chip-to-Chip: ± 10.0%
DM114: Bit-to-Bit: ± 4.0% @ IOUT = 30 ~ 90mA
± 6.0% @ IOUT = 20 ~ 30mA
DM115: Bit-to-Bit: ± 4.0% @ IOUT = 20 ~ 60mA
± 6.0% @ IOUT = 5 ~ 20mA
Maximum Ratings (Ta = 25°C, Tj(max) = 150°C)
| CHARACTERISTIC | SYMBOL | RATING | UNIT |
| Supply Voltage | VDD | 0 ~ 7.0 | V |
| Input Voltage | VIN | -0.4 ~ VDD+0.4 | V |
| Output Current | IOUT | 90 (DM114) | mA |
| 60 (DM115) | |||
| Output Voltage | VOUT | -0.3 ~ 17 | V |
| Clock Frequency | fCLK | 25 | MHz |
| GND Terminal Current | IGND | 750 | mA |
| 500 | |||
| Power Dissipation | PD | 1.64 ( PDIP-16 : Ta=25°C) | W |
| 1.08 ( SOP-16 : Ta=25°C) | |||
| 0.8 ( SSOP-16 : Ta=25°C) | |||
| Thermal Resistance | Rth(j-a) | 76 ( PDIP-16 ) | °C/W |
| 115 ( SOP-16 ) | |||
| 155 ( SSOP-16 ) | |||
| Storage Temperature | Tstg | -55 ~ 150 | °C |
Pin Connection (Top view)
Block Diagram
Equivalent Circuit of Inputs and Outputs
Stock Offer (Hot Sell)
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