Texas Instruments LP5810AYBHR

Overview

LP5810AYBHR 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 supply current at 25.5 mA LED load, and I²C interface up to 1 MHz - used for synchronized multi-device lighting effects in compact wearable and IoT indicators.

For engineers reviewing the LP5810AYBHR datasheet, LP5810AYBHR pinout, LP5810AYBHR application, or LP5810AYBHR equivalent, this page delivers verified electrical specs, DSBGA-9 package mapping, autonomous PWM phase-shift configuration, open/short LED diagnostics, and real-world implementation context for portable electronics and industrial HMI designs.

Technical Context

The LP5810AYBHR integrates a 6 MHz internal oscillator for inter-device synchronization via SYNC pin, supports both manual register control and autonomous animation engine operation with three Animation Engine Units (AEUs) and two Animation Pause Units (APUs) per channel, and enables fade-in/fade-out effects using 256-step slopers with programmable timing (0–8 s in 16 steps). It uses dual dimming: 1-bit global Maximum Current (MC) selection (25.5 mA or 51 mA) plus individual 8-bit Dot Current (DC) scaling.

Its linear current sink architecture achieves 110 mV typical headroom at 25.5 mA and 210 mV at 51 mA, enabling high-efficiency operation with low V_CC (2.7–5.5 V) and logic compatibility across 1.8 V, 3.3 V, and 5 V systems. Integrated de-ghosting, LED open detection (90 mV / 180 mV thresholds), and short detection (configurable 32–68% of V_CC) provide robust fault handling without external circuitry.

Key Specifications

Pinout & Package

LP5810AYBHR is packaged in a 1.43 mm × 1.34 mm, 9-pin DSBGA (YBH) package with thermal pad on underside - optimized for space-constrained PCBs in earbuds, charging cases, and e-tags.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LP5811AYBHR and LP5812AYBHR, the LP5810AYBHR provides optimal integration for compact 4-LED systems - delivering lowest BOM count, smallest 1.43 mm × 1.34 mm DSBGA footprint, and lowest active current (0.4 mA), making it the preferred choice for space- and power-constrained wearables and IoT endpoints.

Availability

LP5810AYBHR is available at Aetrix Electronics and suitable for smart wearables, gaming peripherals, and industrial HMI applications requiring stable component supply, long-lifecycle support, and guaranteed traceability for production programs.

Supply support for LP5810AYBHR 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 expertise in precision LED control and low-power system solutions.

The LP5810AYBHR belongs to TI's LP58xx family of autonomous LED drivers - designed specifically for battery-powered, space-constrained devices needing rich lighting effects without continuous MCU intervention.

FAQ

What is the maximum LED current supported by LP5810AYBHR?

The LP5810AYBHR supports two maximum current modes: 25.5 mA (default, MC = 0) and 51 mA (MC = 1), with each channel independently adjustable via 8-bit Dot Current (DC) scaling from 0% to 100%. This gives precise control over LED brightness while maintaining ±5% channel-to-channel accuracy - critical for RGBW color fidelity in LP5810AYBHR implementations.

Does LP5810AYBHR require external components for basic operation?

Yes - LP5810AYBHR requires a 22 μF capacitor between VCC and GND, placed as close as possible to the device, per TI's layout guidance. No external current-setting resistors are needed, as all current scaling is digital (MC/DC registers). Pull-up resistors (~4.7 kΩ) on SCL/SDA are required for I²C communication, and the SYNC pin may be left floating or grounded if synchronization is unused - all essential for reliable LP5810AYBHR deployment.

How does the autonomous animation engine in LP5810AYBHR reduce MCU load?

The LP5810AYBHR autonomous animation engine executes pre-programmed lighting sequences (breathing, pulsing, fading) using on-chip AEUs and APUs - eliminating the need for real-time PWM updates from the host MCU. Once started via start_cmd, the LP5810AYBHR runs animations independently, freeing the MCU for other tasks while maintaining precise timing and smooth transitions - a core advantage of the LP5810AYBHR architecture.

Can multiple LP5810AYBHR devices be synchronized on one I²C bus?

Yes - up to four LP5810AYBHR devices can share a single I²C bus using unique chip addresses (set by A[4:3] pins). The SYNC pin enables hardware-level synchronization: one device can output a 6 MHz clock to coordinate PWM timing across all units, preventing animation drift and ensuring visually coherent multi-device lighting - a key capability confirmed in LP5810AYBHR's functional block diagram and timing specifications.

What thermal considerations apply to LP5810AYBHR in DSBGA-9 package?

The LP5810AYBHR in YBH (DSBGA-9) package has a junction-to-ambient thermal resistance (R_θJA) of 113.1°C/W. Effective thermal management requires soldering the thermal pad to a solid PCB ground plane; insufficient copper area will cause junction temperatures to exceed the 125°C max operating limit under sustained 51 mA/channel loads. Thermal shutdown activates at 150°C (LED section), protecting the LP5810AYBHR during transient overloads.