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Texas Instruments LP5811CYBHR
- Part No.:
- LP5811CYBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 12-BGA, DSBGA
- Datasheet:
-
LP5811CYBHR.pdf
- Description:
- 12 RGB LED SYNCHRONOUS BOOST DRI
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
LP5811CYBHR from Texas Instruments is a synchronous boost 4-channel RGBW LED driver with autonomous animation engine, designed for battery-powered portable electronics. It operates from 0.5V to 5.5V input, delivers 3V–5.5V regulated output via integrated 140mΩ/60mΩ MOSFETs, supports 0.1–51mA per channel with ±5% device-to-device and channel-to-channel current accuracy, and enables audible-noise-free 24kHz PWM dimming - ideal for earbud status lighting and smartwatch indicators.
For engineers reviewing the LP5811CYBHR datasheet, LP5811CYBHR pinout, LP5811CYBHR application, or LP5811CYBHR equivalent, this page provides verified technical context on its boost converter operation, autonomous animation control, I²C-addressable variants, ultra-low 0.1μA shutdown current, and DSBGA-12 package integration for space-constrained wearable designs.
Technical Context
The LP5811CYBHR integrates a quasi-constant-frequency synchronous boost converter (1MHz at VIN > 1.5V, down to 0.5MHz at VIN < 1V) with valley-current limiting (1.6A), pass-through mode when VIN > VOUT, and true input-output disconnection during shutdown. Its digital core includes an autonomous animation engine synchronized across multiple devices via 6MHz internal clock and SYNC pin.
It combines dual-dimming architecture: 8-bit analog dot-current (DC) control per channel with global 1-bit maximum-current (MC) selection (25.5mA/51mA), plus individual 8-bit PWM dimming with linear/exponential curve options up to 24kHz - all managed through a 1MHz max I²C interface supporting four address variants (including LP5811CYBHR's fixed A[4:3] = 10).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 0.5V–5.5V operating; 1.8V min for startup - enables direct single-cell Li-ion or coin-cell operation without pre-regulation. |
| VOUT Setting | 3.0V–5.5V in 0.1V steps - matches forward voltage of RGBW LEDs across varying color bins and temperature. |
| LED Current Range | 0.1–51mA per channel (256-step resolution); ±5% device/channel error - ensures uniform brightness in multi-LED arrays. |
| Headroom Voltage | 110mV typ. at 25.5mA; 210mV typ. at 51mA - minimizes power loss and thermal rise in low-VF white/amber LEDs. |
| Shutdown Current | 0.1μA typ. - preserves battery life in always-on wearables during extended idle periods. |
| I²C Address | Fixed A[4:3] = 10 (binary) - allows up to four LP5811 variants (AY/BY/CY/DY) on same bus without address conflict. |
| Thermal Shutdown | 150°C (LED driver), 155°C (boost), 15°C hysteresis - protects against sustained overloads in sealed enclosures. |
Pinout & Package
LP5811CYBHR uses a 12-pin DSBGA (YBH) package measuring 1.84mm × 1.43mm with 0.4mm pitch, optimized for ultra-compact portable PCBs. Pin functions are validated per TI SNVSCC4C Rev FEBRUARY 2025 datasheet Figure 5-1 and Table 5-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high control of boost converter; <0.42V disables boost and disconnects input from output. |
| VIN | Input power supply | Accepts 0.5–5.5V; requires 10μF ceramic capacitor close to pin for stability and EMI reduction. |
| SW | Boost switch node | Connects to inductor; carries high di/dt switching current - demands tight layout and ground plane coupling. |
| GND | Ground reference | Common return for boost, LED sinks, and logic - must be low-impedance solid plane for noise immunity. |
| VOUT | Boost output | Regulated 3–5.5V supply; powers LED channels and external loads; requires 22μF bulk capacitance. |
| OUT0–OUT3 | Constant-current LED sinks | Four independent 0.1–51mA sinks with open/short detection; floating if unused. |
| SCL/SDA | I²C interface | 1MHz max operation; supports standard/fast/fast-mode plus; level-shift tolerant (1.8V/3.3V/5V logic). |
| SYNC | Multi-device synchronization | Drives or receives 6MHz sync signal to align PWM phases across multiple LP5811 units for flicker-free effects. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous animation engine | On-chip sequencer executes preloaded lighting patterns without MCU intervention - reduces host processor load in resource-constrained wearables. |
| Integrated de-ghosting | Hardware-level cross-talk suppression between adjacent LED channels - eliminates false illumination during fast PWM transitions. |
| True input-output disconnection | Internal switches fully isolate VIN from VOUT in shutdown - prevents backfeed and leakage into depleted batteries. |
| Ultra-low headroom voltage | 110mV at 25.5mA enables use with low-VF red/amber LEDs while maintaining regulation margin at end-of-life battery voltage. |
| Dual dimming architecture | Simultaneous 8-bit analog (DC) + 8-bit PWM control per channel - achieves >16-bit effective dimming resolution with smooth human-eye response. |
Applications
| Earbud Charging Case Status Lighting | Smartwatch Ambient Indicator |
|---|---|
Use Scenario: Real-time battery level and pairing status indication using RGBW LEDs embedded in compact plastic housing. IC Role / Device Role / Timing Role: LP5811CYBHR acts as autonomous LED driver and timing controller, generating synchronized breathing/fade animations via internal engine. Use Value: Eliminates need for dedicated MCU GPIOs and PWM timers; 0.1μA shutdown current extends case battery life by >30% versus discrete solutions. |
Use Scenario: Always-on ambient light sensing feedback and notification ring around watch bezel under variable ambient conditions. IC Role / Device Role / Timing Role: LP5811CYBHR serves as precision current source and PWM modulator, driving four independent color channels with 24kHz flicker-free dimming. Use Value: 110mV headroom enables stable 25.5mA drive at 2.8V battery voltage, maintaining brightness consistency across full discharge cycle. |
| VR Headset Power-On Sequence | IoT Video Doorbell LED Ring |
Use Scenario: Multi-stage boot-up lighting sequence (white → blue → green) signaling system readiness in enclosed optical module. IC Role / Device Role / Timing Role: LP5811CYBHR functions as autonomous sequencer and voltage-boosted current sink, synchronizing effects across dual units via SYNC pin. Use Value: 6MHz internal oscillator ensures sub-microsecond inter-device timing alignment - critical for stereo-synchronized visual cues. |
Use Scenario: Outdoor-facing LED ring providing motion-triggered illumination and battery-status feedback in weather-sealed enclosure. IC Role / Device Role / Timing Role: LP5811CYBHR operates as robust LED driver with integrated open/short detection, monitoring each segment for field failure. Use Value: ±5% channel-to-channel current matching ensures uniform ring brightness; -40°C to 85°C rating guarantees reliability in uncontrolled environments. |
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 |
|---|---|---|---|
| LP5811ADRRR | Same silicon, WSON-12 package (3mm × 3mm); identical electrical specs and register map. | Requires larger PCB area but offers better thermal dissipation (RθJA = 47.5°C/W vs 92.1°C/W) and reworkability. | Select LP5811ADRRR for industrial HMI or higher-ambient-temperature applications where thermal headroom > PCB size. |
| LP5813CYBHR | 12-channel variant in same DSBGA-12 package; shares identical I²C address (A[4:3]=10), boost architecture, and animation engine. | Supports triple the LED count per device - suitable for smart speaker rings or multi-zone lighting where channel density matters more than footprint. | Choose LP5813CYBHR when scaling beyond 4 LEDs per zone without increasing I²C bus loading or board real estate. |
Compared with LP5811CYBHR, LP5811ADRRR trades miniaturization for thermal performance and manufacturability, while LP5813CYBHR retains identical footprint and interface compatibility but doubles channel count - enabling design reuse across product tiers without firmware changes.
Availability
LP5811CYBHR is available at Aetrix Electronics and suitable for portable electronics, wearable indicators, and IoT edge devices requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for LP5811CYBHR 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 ICs, with decades of expertise in precision LED drivers and low-power system solutions.
LP5811CYBHR belongs to TI's LP58xx family of autonomous RGBW LED drivers engineered specifically for battery-constrained portable and wearable applications demanding ultra-low quiescent current, integrated boost, and hardware-accelerated lighting effects.
FAQ
What is the minimum input voltage required to start up the LP5811CYBHR?
The LP5811CYBHR requires a minimum of 1.8V on VIN to initiate boost converter startup. Once operational, it sustains regulation down to 0.5V input - enabling use with partially discharged single-cell Li-ion or alkaline batteries. Startup occurs only when EN is high and VIN exceeds the 1.8V UVLO rising threshold; below 0.4V, the device enters full shutdown.
How does the LP5811CYBHR achieve audible-noise-free PWM dimming?
The LP5811CYBHR supports PWM frequencies up to 24kHz in its highest setting (pwm_fre = 0), which exceeds the human hearing range (typically <20kHz). This eliminates coil whine and LED buzz in sensitive audio-adjacent applications like earbuds and VR headsets. The 8-bit resolution ensures smooth brightness transitions without visible stepping.
Can multiple LP5811CYBHR devices be synchronized for coordinated lighting effects?
Yes - the LP5811CYBHR includes a dedicated SYNC pin and generates a precise 6MHz internal clock. When configured as master, it drives SYNC to slave devices; as slave, it locks to incoming SYNC. This enables pixel-perfect timing alignment across multiple LP5811CYBHR units for seamless multi-device animations without MCU coordination.
What protection features are integrated into the LP5811CYBHR?
The LP5811CYBHR integrates thermal shutdown (150°C for LED driver, 155°C for boost), output over-voltage protection (5.5–5.9V trip), LED open/short detection per channel, and true input-output disconnection during shutdown. These features prevent damage from overtemperature, overvoltage, wiring faults, and battery reverse connection in field-deployed devices.
Is the LP5811CYBHR compatible with 1.8V I²C systems?
Yes - the SCL, SDA, and SYNC pins accept 1.8V logic levels (VIH_LOGIC ≥ 1.4V, VIL_LOGIC ≤ 0.4V), and the device operates with 1.8V, 3.3V, or 5V-compatible control signals. Its I²C interface supports standard (100kHz), fast (400kHz), and fast-mode plus (1MHz) speeds, ensuring interoperability with modern low-voltage microcontrollers.
LP5811CYBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 12-BGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 0.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 3V ~ 5.5V
- Current - Output / Channel:
- 1.6A
- Frequency:
- 500kHz, 1MHz
- Dimming:
- Analog, PWM
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DSBGA (1.84x1.43)
LP5811CYBHR FAQ
1.How can I place an order for LP5811CYBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5811CYBHR 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 LP5811CYBHR reliable?
The price and inventory of LP5811CYBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5811CYBHR is usually 5 days.
3.What payment methods are accepted for LP5811CYBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5811CYBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5811CYBHR?
LP5811CYBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5811CYBHR 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 LP5811CYBHR?
For technical support, including LP5811CYBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5811CYBHR requirements.
6.How does Aetrix verify that LP5811CYBHR is sourced from the original manufacturer or authorized distributors?
All LP5811CYBHR 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 LP5811CYBHR meets industry standards.
7.What is the process for return or replacement of LP5811CYBHR?
All LP5811CYBHR units undergo pre-shipment inspection (PSI). If there is an issue with LP5811CYBHR, 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 LP5811CYBHR part is unused and in its original packaging.
Return procedure for LP5811CYBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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