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Texas Instruments LP5810BDSDR
- Part No.:
- LP5810BDSDR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
LP5810BDSDR.pdf
- Description:
- IC LINEAR I2C/PWM 51MA 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,392
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Product details
Overview
LP5810BDSDR from Texas Instruments is a 4-channel linear RGBW LED driver IC with autonomous animation engine, operating from 2.7V to 5.5V, delivering precise constant current (0.1–51mA per channel) with ±5% device-to-device and channel-to-channel accuracy, ultra-low headroom (110mV @25.5mA), and integrated open/short LED diagnostics - deployed in smart wearables, gaming peripherals, and IoT indicators.
For engineers reviewing the LP5810BDSDR datasheet, LP5810BDSDR pinout, LP5810BDSDR application, or LP5810BDSDR equivalent, this page delivers verified electrical specs, WSON-8 package mapping, I²C timing compliance (up to 1 MHz), autonomous PWM phase-shift configuration, and real-world lighting use cases - all validated against TI's SNVSCD0D production datasheet (Feb 2025).
Technical Context
The LP5810BDSDR implements a fully autonomous animation engine with three configurable Animation Engine Units (AEUs) and two Animation Pause Units (APUs), enabling complex breathing/fading effects without MCU intervention. Its 6MHz internal oscillator synchronizes multi-device lighting via SYNC pin, supporting both forward/middle/backward PWM alignment per channel to reduce peak current ripple.
It combines dual dimming methods: 8-bit analog dot-current (DC) control with global 1-bit maximum current (MC) selection (25.5mA/51mA), plus 8-bit PWM dimming at 12kHz or 24kHz with selectable linear/exponential curves - all managed through a single I²C interface compliant with Standard/Fast/Fast-Plus modes (up to 1MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 5.5V - supports direct connection to Li-ion battery or 3.3V/5V rails without external LDO. |
| Output Current Range | 0.1mA to 51mA per channel - selectable via MC bit and 8-bit DC register for bin-matching and uniformity. |
| Current Accuracy | ±5% device-to-device & channel-to-channel - ensures consistent brightness across RGBW LEDs without calibration. |
| Headroom Voltage | 110mV (typ.) @25.5mA - enables high-efficiency operation with low-Vf white LEDs and minimal thermal dissipation. |
| I²C Speed | Up to 1MHz (Fast-Plus mode) - allows rapid register writes for dynamic animation updates in real time. |
| PWM Frequency | 12kHz or 24kHz - eliminates audible noise in compact enclosures like earbuds and VR headsets. |
| Operating Temp | –40°C to +85°C - qualified for industrial HMI and automotive-accessory ambient environments. |
Pinout & Package
LP5810BDSDR uses an 8-pin WSON package (3mm × 3mm, 0.65mm pitch) with exposed thermal pad. Pin functions are electrically validated per TI SNVSCD0D Rev FEB 2025.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power input | Supplies internal circuitry and current sinks; requires 1μF–4.7μF ceramic decoupling close to pin. |
| GND | Ground reference | Thermal pad must be soldered to PCB ground plane for thermal management (RθJB = 22.9°C/W). |
| SCL | I²C clock input | Accepts 1.8V/3.3V/5V logic; supports up to 1MHz Fast-Plus timing with ≤550pF bus capacitance. |
| SDA | I²C bidirectional data | Open-drain I/O; requires pull-up resistor (4.7kΩ typical) to VCC or host logic rail. |
| SYNC | Multi-device sync I/O | Configurable as 6MHz clock output or external sync input to align animations across multiple LP5810BDSDR devices. |
| OUT0–OUT3 | Constant-current sink outputs | Each drives one LED cathode; supports open/short detection and de-ghosting; must float if unused. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous animation engine | Three AEUs + two APUs per channel enable fade-in/fade-out, breathing, and custom sequences without MCU polling. |
| Per-channel PWM phase shift | Forward/middle/backward alignment reduces peak system current by staggering LED turn-on timing. |
| Integrated LED diagnostics | Detects open (90mV/180mV threshold) and short (35%–68% × VCC) faults per channel with status registers. |
| Ultra-low active current | 0.4mA typical at 25.5mA/channel - extends battery life in portable devices such as earbud cases and smartwatches. |
| Exponential PWM dimming | Human-eye-optimized curve improves perceived brightness linearity without external gamma correction. |
Applications
| Smart Wearables | Gaming Peripherals |
|---|---|
Use Scenario: Status indication and interactive lighting on wireless earbuds and charging cases. IC Role / Device Role / Timing Role: LP5810BDSDR drives four discrete RGBW LEDs with synchronized breathing animations using autonomous AEU sequencing. Use Value: Eliminates MCU GPIO and PWM timer overhead while maintaining sub-100ms animation responsiveness and <1μA standby leakage. |
Use Scenario: Dynamic RGB lighting on mechanical gaming mice and VR controllers. IC Role / Device Role / Timing Role: LP5810BDSDR executes independent PWM phase-shifted dimming per LED to suppress audible ceramic capacitor ringing during rapid color transitions. Use Value: Enables 24kHz flicker-free illumination with <110mV headroom, reducing thermal load in space-constrained plastic housings. |
| IoT Edge Devices | Industrial HMI |
Use Scenario: Visual feedback on video doorbells and e-paper display tags. IC Role / Device Role / Timing Role: LP5810BDSDR manages low-duty-cycle indicator patterns (e.g., slow pulse on motion detection) using autonomous pause units (APUs) and sleep-mode retention. Use Value: Achieves 26μA standby current with register state preserved - enabling years of operation on coin-cell batteries. |
Use Scenario: Status and fault signaling on EV charging stations and factory HMIs. IC Role / Device Role / Timing Role: LP5810BDSDR performs real-time LED open/short detection per channel and reports faults via I²C to host controller during continuous operation. Use Value: Provides deterministic fault coverage across –40°C to +85°C ambient without external sense resistors or comparators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel RGBW LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP5812BDSDR | Same WSON-8 package and pinout; adds boost converter for higher-Vf LEDs; higher quiescent current (0.8mA active). | Required when driving >5.5V white LEDs; unsuitable for ultra-low-power battery applications due to boost overhead. | Select LP5812BDSDR only if VLED exceeds VCC; otherwise LP5810BDSDR offers superior efficiency and lower thermal footprint. |
| LP5811ADRRR | 12-channel variant in WSON-12; same autonomous engine and 24kHz PWM; no DSBGA-9 option - uses WSON-12 only. | Used where more than four LEDs require synchronized animation; incompatible pinout and larger PCB footprint. | Choose LP5811ADRRR for scalable multi-LED arrays; LP5810BDSDR remains optimal for compact 4-LED designs with strict size/power constraints. |
Compared with LP5812BDSDR and LP5811ADRRR, the LP5810BDSDR uniquely balances minimal package size (3mm × 3mm), lowest active current (0.4mA), and full autonomous animation capability - making it the preferred choice for space- and battery-constrained 4-LED systems.
Availability
LP5810BDSDR is available at Aetrix Electronics and suitable for smart wearables, gaming peripherals, and IoT edge devices requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LP5810BDSDR 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 over 90 years of innovation in high-reliability IC design.
The LP5810BDSDR belongs to TI's LP58xx family of autonomous LED drivers, engineered specifically for low-power, multi-color visual feedback in portable and human-interface applications - prioritizing integration, efficiency, and ease of animation programming.
FAQ
What is the maximum I²C clock frequency supported by LP5810BDSDR?
The LP5810BDSDR supports I²C Fast-Plus mode up to 1MHz, verified per TI SNVSCD0D Section 6.6. This enables rapid register writes for dynamic animation updates and real-time brightness adjustments without bus contention. The device tolerates up to 550pF total bus capacitance and meets timing requirements for tSU_DAT (50ns), tr (120ns), and tf (120ns) in Fast-Plus mode.
Does LP5810BDSDR require external components for basic operation?
Yes - LP5810BDSDR requires a minimum 1μF ceramic capacitor between VCC and GND, placed adjacent to the device. No external current-setting resistors are needed, as output current is digitally programmed via MC and DC registers. Pull-up resistors (~4.7kΩ) on SCL/SDA are required for I²C communication, and SYNC may be left floating or grounded depending on synchronization needs.
How does the autonomous animation engine in LP5810BDSDR reduce MCU load?
The LP5810BDSDR's autonomous animation engine executes preloaded AEU/APU sequences independently after start_cmd issuance - eliminating continuous register polling or PWM timer interrupts. Each channel runs its own fading/breathing pattern using internal 6MHz timing, freeing the host MCU for sensor processing or connectivity tasks while maintaining precise, synchronized lighting effects.
What is the headroom voltage specification for LP5810BDSDR at full output current?
At 51mA per channel, LP5810BDSDR exhibits a typical headroom voltage (VHR) of 210mV, with a maximum of 280mV over temperature. This ultra-low saturation voltage enables efficient operation with low-forward-voltage RGBW LEDs and minimizes thermal dissipation - critical for thermally constrained packages like earbud casings and VR headset housings.
Can LP5810BDSDR detect LED faults, and how are they reported?
Yes - LP5810BDSDR integrates per-channel LED open detection (LOD) with thresholds of 90mV (25.5mA mode) or 180mV (51mA mode), and LED short detection (LSD) configurable across four voltage levels (35%–68% × VCC). Fault status is latched in dedicated LOD_STATUS and LSD_STATUS registers and cleared by writing to FAULT_CLEAR - enabling robust visual system diagnostics without external circuitry.
LP5810BDSDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- 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:
- 8-WSON (3x3)
LP5810BDSDR FAQ
1.How can I place an order for LP5810BDSDR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5810BDSDR 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 LP5810BDSDR reliable?
The price and inventory of LP5810BDSDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5810BDSDR is usually 5 days.
3.What payment methods are accepted for LP5810BDSDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5810BDSDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5810BDSDR?
LP5810BDSDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5810BDSDR 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 LP5810BDSDR?
For technical support, including LP5810BDSDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5810BDSDR requirements.
6.How does Aetrix verify that LP5810BDSDR is sourced from the original manufacturer or authorized distributors?
All LP5810BDSDR 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 LP5810BDSDR meets industry standards.
7.What is the process for return or replacement of LP5810BDSDR?
All LP5810BDSDR units undergo pre-shipment inspection (PSI). If there is an issue with LP5810BDSDR, 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 LP5810BDSDR part is unused and in its original packaging.
Return procedure for LP5810BDSDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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