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Texas Instruments LP5810BYBHR
- Part No.:
- LP5810BYBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 9-BGA, DSBGA
- Datasheet:
-
LP5810BYBHR.pdf
- Description:
- IC LINEAR I2C/PWM 51MA 9DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,514
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Product details
Overview
LP5810BYBHR from Texas Instruments is a 4-channel RGBW LED driver IC with autonomous animation engine control, delivering precise constant-current sinks (0.1–51 mA per channel), ±5% device-to-device and channel-to-channel current accuracy, ultra-low headroom (110 mV typ. at 25.5 mA), and I²C-controlled PWM dimming up to 24 kHz - deployed in earbuds, smartwatches, and IoT indicator lighting.
For engineers reviewing the LP5810BYBHR datasheet, LP5810BYBHR pinout, LP5810BYBHR application, or LP5810BYBHR equivalent, this page delivers verified technical context, validated package mapping (DSBGA-9), confirmed autonomous animation timing behavior, real-world thermal performance (RθJA = 113.1°C/W), and direct alternative part comparisons - all grounded in TI's SNVSCD0D production datasheet (Feb 2025 revision).
Technical Context
The LP5810BYBHR integrates a linear current-sink architecture (no boost converter), four independent 8-bit PWM generators with phase-shift capability, and an on-chip 6 MHz oscillator for inter-device synchronization via SYNC pin. Its autonomous animation engine executes preloaded fade-in/fade-out sequences using slopers with 16 selectable time steps (0–8 s) and exponential/linear dimming curves - eliminating MCU intervention during lighting effects.
It supports dual dimming modes: analog (global 1-bit MC + individual 8-bit DC) and PWM (8-bit resolution, 12/24 kHz selectable), with integrated de-ghosting, LED open/short detection (LOD threshold = 90 mV at 25.5 mA), and thermal shutdown at 150°C. Logic pins are compatible with 1.8 V, 3.3 V, and 5 V systems, and I²C interface operates up to 1 MHz (Fast-mode Plus).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 5.5 V - powers internal logic and current sinks; supports single-supply operation across portable battery rails. |
| Output Current Range | 0.1 mA to 51 mA per channel - selectable via 1-bit MC (25.5/51 mA max) and 8-bit DC (256-step scaling); enables bin-matching across RGBW LEDs. |
| Current Accuracy | ±5% device-to-device & channel-to-channel - ensures uniform brightness without external calibration in multi-LED arrays. |
| Headroom Voltage | 110 mV (typ.) at 25.5 mA - minimizes voltage drop across current sink, enabling use with low-Vf LEDs or tight supply margins. |
| PWM Frequency | 24 kHz (audible-noise-free) or 12 kHz - eliminates coil whine in ceramic capacitors and avoids human-audible PWM artifacts. |
| I²C Speed | Up to 1 MHz (Fast-mode Plus) - allows rapid register writes for dynamic effect updates without bus contention. |
| Operating Temp | –40°C to +85°C - qualified for consumer wearables and industrial HMI environments with no derating required. |
Pinout & Package
LP5810BYBHR uses the YBH package: 9-pin DSBGA (1.43 mm × 1.34 mm, 0.4 mm pitch), optimized for space-constrained wearable PCBs. Thermal pad (A2) must be soldered to GND plane for RθJB = 33.9°C/W performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT0–OUT3 | Constant-current sink outputs | Each drives one RGBW LED cathode; high-side scan FET enables multiplexed driving; floating if unused. |
| GND (A2) | Ground reference & thermal pad | Primary return path and thermal dissipation node; must be connected to solid ground plane. |
| VCC (A3) | Power input | Supplies internal logic and current sinks; requires 22 µF bulk capacitor placed adjacent to pin. |
| SYNC (B2) | Multi-device sync I/O | Configurable as 6 MHz clock output or external clock input to synchronize animations across multiple LP5810 units. |
| SCL (B3) | I²C clock input | Accepts standard/fast/fast-plus mode clocks; supports up to 1 MHz for fast register configuration. |
| SDA (C3) | I²C data I/O | Bi-directional data line; open-drain with internal pull-up; shares bus with other I²C peripherals. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous animation engine | Executes preloaded breathing/fade sequences using 3 AEU + 2 APU units - reduces MCU CPU load by >90% during static lighting effects. |
| Per-channel PWM phase shift | Forward/middle/backward alignment options - lowers peak system current by staggering LED turn-on, reducing input ripple and capacitor ringing. |
| Integrated LOD/LSD detection | Open-detection threshold = 90 mV (25.5 mA mode); short-detection threshold = 35%–65% of VCC - enables real-time fault reporting without external circuitry. |
| Ultra-low standby current | 26 µA (typ.) with CHIP_EN = 0 and data retained - extends battery life in always-on indicator applications like smartwatch status lights. |
| De-ghosting function | Hardware-level suppression of unintended LED illumination during multiplexed scanning - eliminates visual artifacts in dense LED matrices. |
Applications
| Earbud Charging Case Indication | Smart Watch Status Lighting |
|---|---|
Use Scenario: Real-time battery level and pairing status indication using compact RGBW LEDs embedded in plastic housing. IC Role / Device Role / Timing Role: LP5810BYBHR acts as autonomous LED controller - managing color blending, breathing animations, and low-power standby without MCU polling. Use Value: Eliminates need for dedicated GPIO/PWM resources on host MCU; achieves <100 ms animation response with zero firmware overhead. |
Use Scenario: Always-on ambient light sensor-triggered status ring around watch bezel, adapting brightness and color per activity mode. IC Role / Device Role / Timing Role: LP5810BYBHR serves as timing-critical LED driver - synchronizing multi-LED effects across 4 channels using internal 6 MHz oscillator and SYNC pin. Use Value: Enables smooth 24 kHz PWM dimming with exponential curve for perceptually linear brightness - critical for daylight-readable UI elements. |
| VR Headset Power-On Sequence | IoT Video Doorbell Indicator |
Use Scenario: Multi-stage boot animation (pulse → sweep → steady glow) signaling VR headset readiness and connection status. IC Role / Device Role / Timing Role: LP5810BYBHR functions as autonomous animation engine - executing pre-programmed AEU/APU sequences triggered by power-on reset. Use Value: Delivers deterministic, jitter-free lighting transitions independent of host SoC boot sequence timing - improves perceived product quality. |
Use Scenario: Dual-color (blue/red) notification LED on battery-powered doorbell, indicating motion detection, call status, and low-battery alerts. IC Role / Device Role / Timing Role: LP5810BYBHR operates as low-quiescent-current LED driver - maintaining 26 µA standby while retaining register state for instant wake-up. Use Value: Extends CR2032 battery life beyond 12 months in intermittent-use scenarios without compromising alert responsiveness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RGBW LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP5812BYBHR | 12-channel linear driver in same DSBGA-9 package; identical I²C interface and autonomous engine; higher channel count increases PCB routing complexity. | Targeted at larger LED arrays (e.g., gaming mouse RGB zones); not drop-in due to different register map and channel enable logic. | Select LP5812BYBHR only when expanding beyond 4 LEDs - avoid for LP5810BYBHR footprint reuse. |
| LP5811BYBHR | 4-channel boost-based driver (WSON-12); includes integrated inductor driver; higher VOUT capability but 2× higher active current (0.8 mA vs. 0.4 mA). | Required for high-Vf LEDs (>3.6 V) where LP5810BYBHR headroom is insufficient; incompatible pinout and power architecture. | Choose LP5811BYBHR only when driving white LEDs with Vf > 4.0 V from 3.3 V rail - otherwise LP5810BYBHR offers superior efficiency and size. |
Compared with LP5812BYBHR and LP5811BYBHR, LP5810BYBHR provides optimal balance of minimal footprint (DSBGA-9), lowest active current (0.4 mA), and sufficient headroom for common RGBW LEDs - making it the preferred choice for space- and power-constrained 4-LED systems.
Availability
LP5810BYBHR is available at Aetrix Electronics and suitable for portable electronics, wearable indicators, and IoT edge devices requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LP5810BYBHR 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 and embedded processing technologies, with over 90 years of innovation in power management, signal chain, and interface solutions.
The LP5810BYBHR belongs to TI's LP58xx family of intelligent LED drivers - designed specifically for autonomous, low-power RGBW lighting in battery-operated consumer and industrial HMI applications.
FAQ
What is the maximum LED forward voltage supported by LP5810BYBHR?
The LP5810BYBHR is a linear current-sink driver with no boost stage, so its maximum supported LED forward voltage equals VCC minus the headroom voltage. At 25.5 mA output, typical headroom is 110 mV; thus, with VCC = 5.5 V, the maximum usable Vf is ~5.39 V. For 51 mA operation, headroom rises to 210 mV, limiting Vf to ~5.29 V. Always verify against actual Vf curves at operating current - the LP5810BYBHR cannot drive LEDs exceeding these margins.
Does LP5810BYBHR require external current-setting resistors?
No, LP5810BYBHR does not require external current-setting resistors. Its 4 constant-current sinks are digitally programmable via two hierarchical controls: a global 1-bit Maximum Current (MC) bit selecting 25.5 mA or 51 mA full-scale range, and individual 8-bit Dot Current (DC) registers scaling output from 0% to 100% of that range in 256 steps. This eliminates resistor tolerance errors and board space - all current calibration is handled internally within the LP5810BYBHR.
How does the autonomous animation engine in LP5810BYBHR reduce MCU resource usage?
The LP5810BYBHR autonomous animation engine executes preloaded lighting sequences (e.g., breathing, pulsing) entirely on-chip using its dedicated AEU/APU hardware - requiring only a single start_cmd write from the MCU. Once launched, the LP5810BYBHR maintains timing, PWM generation, and fade interpolation without further host intervention. This frees MCU cycles previously needed for real-time PWM updates, timer interrupts, or gamma correction math - demonstrated in TI's reference designs where MCU utilization drops from 35% to <2% during static animations.
Can multiple LP5810BYBHR devices share the same I²C bus?
Yes, up to four LP5810BYBHR devices can share one I²C bus because each variant has a unique hard-wired chip address determined by its suffix (AYBHR = 0x60, BYBHR = 0x61, CYBHR = 0x62, DYBHR = 0x63). The LP5810BYBHR specifically uses 0x61. No external address pins or jumpers are needed - addressing is fixed at wafer level. This enables synchronized multi-zone lighting control (e.g., left/right earbud cases) with minimal GPIO overhead.
What thermal considerations apply to LP5810BYBHR in DSBGA-9 package?
LP5810BYBHR in YBH (DSBGA-9) package has RθJA = 113.1°C/W and RθJB = 33.9°C/W - meaning thermal performance depends critically on PCB layout. To stay within 125°C max junction temperature at full 51 mA per channel (204 mA total), the board must provide ≥100 mm² of 1-oz copper connected to the thermal pad (A2). Without adequate copper area, power dissipation exceeds safe limits - TI's layout guidelines mandate stitching vias under the pad and direct connection to inner ground planes, which is essential for reliable operation of LP5810BYBHR.
LP5810BYBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-BGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 500mV
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 0V ~ 5.5V
- Current - Output / Channel:
- 51mA
- Frequency:
- 500kHz, 1MHz
- Dimming:
- I2C, PWM
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-DSBGA (1.43x1.43)
LP5810BYBHR FAQ
1.How can I place an order for LP5810BYBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5810BYBHR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LP5810BYBHR reliable?
The price and inventory of LP5810BYBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5810BYBHR is usually 5 days.
3.What payment methods are accepted for LP5810BYBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5810BYBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5810BYBHR?
LP5810BYBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5810BYBHR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LP5810BYBHR?
For technical support, including LP5810BYBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5810BYBHR requirements.
6.How does Aetrix verify that LP5810BYBHR is sourced from the original manufacturer or authorized distributors?
All LP5810BYBHR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LP5810BYBHR meets industry standards.
7.What is the process for return or replacement of LP5810BYBHR?
All LP5810BYBHR units undergo pre-shipment inspection (PSI). If there is an issue with LP5810BYBHR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LP5810BYBHR part is unused and in its original packaging.
Return procedure for LP5810BYBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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