Texas Instruments LP5810ADSDR

Overview

LP5810ADSDR from Texas Instruments is a 4-channel linear RGBW LED driver IC with autonomous animation engine, constant-current sinks (0.1–51 mA per channel), ±5% device-to-device and channel-to-channel current accuracy, ultra-low 0.4 mA active current at 25.5 mA LED load, and I²C interface up to 1 MHz - deployed in smart wearables, gaming peripherals, and IoT status indicators.

For engineers reviewing the LP5810ADSDR datasheet, LP5810ADSDR pinout, LP5810ADSDR application, or LP5810ADSDR equivalent, this page delivers verified electrical specs, WSON-8 package mapping, autonomous PWM phase-shift capability, open/short LED diagnostics, and real-world lighting use cases - all grounded in TI's SNVSCD0D production datasheet (Feb 2025 revision).

Technical Context

The LP5810ADSDR implements a fully integrated linear current-sink architecture with four independent 8-bit programmable channels, each supporting analog dimming (global 1-bit MC + individual 8-bit DC) and PWM dimming (24 kHz or 12 kHz, linear/exponential curves, configurable phase alignment). Its autonomous animation engine uses three Animation Engine Units (AEUs) and two Animation Pause Units (APUs) per channel to execute fade-in/fade-out sequences without MCU intervention.

It features integrated de-ghosting, LED open/short detection (LOD threshold = 90 mV @ 25.5 mA, 180 mV @ 51 mA), thermal shutdown (150 °C), and under-voltage lockout (2.5 V rising). The internal 6 MHz oscillator enables inter-device synchronization via SYNC pin, allowing coordinated lighting across multiple LP5810ADSDR units on a shared I²C bus.

Key Specifications

Pinout & Package

LP5810ADSDR is packaged in an 8-pin WSON (DSD) with 3 mm × 3 mm body size and exposed thermal pad. Pinout matches Figure 5-2 of SNVSCD0D datasheet.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 4-channel RGBW LED driver applications.

Compared with LP5812ADSDR and LP5811ADRRR, the LP5810ADSDR delivers optimal balance of ultra-low power (0.4 mA active), compact WSON-8 packaging, and autonomous animation - making it the most efficient choice for space-constrained, battery-sensitive 4-LED applications where boost voltage is unnecessary.

Availability

LP5810ADSDR is available at Aetrix Electronics and suitable for smart wearables, gaming peripherals, and IoT status indicators requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for LP5810ADSDR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies, with decades of automotive- and industrial-grade reliability validation.

The LP5810ADSDR belongs to TI's LP58xx family of intelligent LED drivers designed specifically for low-power, high-fidelity RGBW lighting in portable and human-interface applications - emphasizing autonomy, precision, and integration.

FAQ

What is the maximum LED forward voltage supported by LP5810ADSDR?

The LP5810ADSDR is a linear current-sink driver with no internal boost stage, so its maximum supported LED forward voltage equals V_CC minus the headroom voltage. At 25.5 mA output, typical headroom is 110 mV; thus, with a 5.5 V supply, the device supports LEDs up to ~5.39 V. For higher-V_f LEDs, TI recommends LP5812ADSDR (integrated boost) instead of LP5810ADSDR.

Does LP5810ADSDR support true RGBW independent control?

Yes. LP5810ADSDR provides full independent control of all four channels (OUT0–OUT3), each with separate 8-bit Dot Current (DC) and 8-bit PWM registers, plus individual phase alignment and exponential/linear dimming curve selection. This enables precise white-point tuning, dynamic color mixing, and per-LED animation sequencing - confirmed in Section 7.3.1–7.3.3 of the LP5810ADSDR datasheet.

How does the autonomous animation engine reduce MCU overhead?

The LP5810ADSDR's autonomous animation engine executes preloaded AEU/APU patterns (fade-in/fade-out, breathing, etc.) entirely on-chip after start_cmd initiation. Once running, it requires zero real-time MCU intervention - freeing the host processor for other tasks. The LP5810ADSDR maintains full visibility via readable PWM_value and pattern_status registers, enabling status polling without interrupt latency.

What is the purpose of the SYNC pin on LP5810ADSDR?

The SYNC pin on LP5810ADSDR serves dual roles: as a 6 MHz clock output (when vsync_out_en = 1) to synchronize lighting effects across multiple LP5810ADSDR devices, or as an external clock input for system-level timing alignment. When unused, it must be tied to GND to minimize leakage current - a requirement explicitly stated in Table 5-1 of the LP5810ADSDR datasheet.

Can LP5810ADSDR detect LED failures in real time?

Yes. LP5810ADSDR integrates per-channel LED open detection (LOD) and LED short detection (LSD) with configurable thresholds. LOD triggers when cathode voltage falls below 90 mV (at 25.5 mA) for 3 consecutive PWM cycles; LSD activates when voltage exceeds 35% of V_CC. Both flags are latched in dedicated status registers and can be cleared via Fault_Clear register - enabling robust fault reporting in safety-critical UIs.