| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
1,200 pcs
|
1200 pcs | On Request | 1 | On Request | On Request | 05+ | On Request | On Request |
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The DM134B from SITI is a versatile 16-bit constant current LED driver integrated circuit, specifically engineered for LED display applications. It operates on a supply voltage ranging from 3.3V to 5V, making it compatible with a wide array of microcontrollers and systems.
Key electrical features include a maximum clock frequency of 25MHz for cascade operation and a maximum output voltage of 17V. The constant current output can be adjusted using an external resistor connected to the R-EXT pin, offering design flexibility. The chip provides precise current matching, with chip-to-chip matching at ±10.0% and bit-to-bit matching varying by model and current range.
The DM134B is available in multiple package types: DIP24, SOP24, SSOP24, and QFN32, catering to different assembly and prototyping needs. Its design incorporates a 16-bit shift register, latches, and constant current drivers on a single CMOS chip, simplifying circuit design for LED displays.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.17 | $1.17 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The supply voltage range is 3.3V to 5V.
The maximum clock frequency is 25MHz in cascade operation.
The maximum output voltage is 17V.
The DM134B is available in DIP24, SOP24, SSOP24, and QFN32 packages.
For output currents between 30mA and 90mA, bit-to-bit matching is ±4%. For 20mA to 30mA, it is ±6%. Chip-to-chip matching is ±10%.
The ST2221C has similar pin layout and functionality.