MANUFACTURER PART RECORDAL58263A
Diodes IncorporatedAL58263A is a Diodes Incorporated 16-channel constant-current LED driver with 16-bit grayscale Adaptive Pulse Density Modulation (APDM) — for indoor/outdoor LED video displays, variable message signs, traffic signs, billboards and LCD backlighting where uniform brightness and flicker-free dimming decide display quality. The APDM architecture is the selection point: by mitigating non-ideal output-current distortion from non-symmetric transient responses and separating frame waveform components, it improves output-current linearity and raises the system refresh rate versus conventional PWM dimming. It runs from 3.0 V to 5.0 V, supports output channel voltages up to 15 V, interfaces with a 25 MHz data clock, and delivers up to 45 mA of precise programmable current per channel. Each channel current is set through the digital interface, while the overall range is set by one external sensing resistor plus two independent 4-bit global current-gain controls (separate Group A and Group B banks). Accuracy is 1.5% typical / 3.5% maximum channel-to-channel current skew and 3% typical / 6% maximum chip-to-chip skew, with 0.1%/V output-voltage regulation, and built-in LED open/short diagnostics whose results are stored in registers for MCU readout, plus a 155°C thermal alarm with 15°C hysteresis. It comes in a thermally enhanced TSSOP-24EP package with exposed pad, rated -40°C to +105°C ambient. Selection advice: do not treat the A variant as a drop-in identical to the base AL58263 — the base part runs 3.0 V to 5.5 V with up to 55 mA per channel and a single 6-bit global current control, so re-check voltage headroom, current budget and gain-register programming when swapping. Solder the exposed thermal pad and provide a generous copper spread for full-current operation. Featured on Mouser New Products (2026-10-15). Parameters verified against Diodes Incorporated documentation. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.
Power ManagementLED driverTSSOP-24EP