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Texas Instruments LP5813CYBHR
- Part No.:
- LP5813CYBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 12-BGA, DSBGA
- Datasheet:
-
LP5813CYBHR.pdf
- Description:
- 12 RGB LED SYNCHRONOUS BOOST DRI
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
LP5813CYBHR from Texas Instruments is a synchronous boost 4×3 matrix RGB LED driver with autonomous animation engine, designed for battery-powered portable systems. It supports 0.5V–5.5V input, delivers 3V–5.5V regulated output via integrated 1.6A valley-current-limited boost converter, and drives up to 12 LEDs (e.g., 4 RGB) using time-cross-multiplexing (TCM) with ¼/⅓/½/1 ratios. Its 4 precision constant-current sinks (0.1–51mA, ±5% channel-to-channel error) enable high-fidelity color mixing in earbuds and smart wearables.
For engineers reviewing the LP5813CYBHR datasheet, LP5813CYBHR pinout, LP5813CYBHR application, or LP5813CYBHR equivalent, this page delivers verified specifications including ultra-low 0.45mA active current, 24kHz audible-noise-free PWM dimming, autonomous animation control, I²C-compatible 1MHz interface, and DSBGA-12 package with 1.84mm × 1.43mm footprint - all critical for space-constrained, low-power LED indication designs.
Technical Context
The LP5813CYBHR integrates a synchronous boost converter with 140mΩ high-side and 60mΩ low-side MOSFETs, operating at 1MHz (VIN > 1.5V) or 0.5MHz (VIN < 1V) in adaptive constant-on-time valley-current mode. It features true input-output disconnection during shutdown and pass-through mode when VIN exceeds VOUT setting.
Its time-cross-multiplexing (TCM) architecture combines 4 high-side scan switches and 4 low-side current sinks into 4 bidirectional outputs (OUT0–OUT3), enabling independent control of 12 LED dots with integrated de-ghosting and per-LED open/short detection. The autonomous animation engine executes register-configured lighting sequences without MCU intervention, synchronized across multiple devices via 6MHz internal clock and SYNC pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.5V to 5.5V - supports single-cell Li-ion down to near-dead battery; 1.8V minimum for startup ensures reliable cold-boot in wearables. |
| Boost Output Voltage | 3.0V to 5.5V in 0.1V steps - configurable to match forward voltage of red/green/blue LEDs across temperature and aging. |
| Constant Current Range | 0.1mA to 51mA per sink - dual-range (25.5mA/51mA global max) with 8-bit dot-current resolution enables precise brightness and color balance. |
| Headroom Voltage | 110mV (typ.) at 25.5mA - minimizes power loss and thermal rise in compact PCB layouts with tight height constraints. |
| I²C Interface Speed | Up to 1MHz Fast-mode Plus - enables rapid configuration of 12 LEDs and animation registers without MCU polling overhead. |
| Active Supply Current | 0.45mA (typ.) at 25.5mA LED current - extends battery life in always-on LED indication applications like charging cases. |
| Shutdown Current | 0.1μA (typ.) - meets stringent energy budgets for Bluetooth earbuds in case-closed standby mode. |
Pinout & Package
LP5813CYBHR uses a 12-pin DSBGA package (1.84mm × 1.43mm, 0.4mm pitch) optimized for ultra-compact portable electronics. The package supports solder paste stencil printing and standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high logic control for boost converter; pulls device into full shutdown (0.1μA) when low. |
| VIN | Power supply input | Accepts 0.5V–5.5V source; requires 10μF ceramic capacitor close to pin for stability and EMI suppression. |
| SW | Boost switch node | Connects to inductor; carries high di/dt switching current - must be routed with minimal loop area. |
| GND | Ground reference | Common return for boost, LED driver, and logic; requires solid thermal pad connection to PCB ground plane. |
| VOUT | Boost output | Regulated 3V–5.5V supply for LED strings and external loads; requires 22μF bulk capacitance. |
| OUT0–OUT3 | Bidirectional LED terminals | Each integrates high-side scan FET + low-side current sink; supports TCM matrix driving and open/short detection. |
| SCL/SDA | I²C interface | Standard 1MHz Fast-mode Plus bus; SDA is open-drain, SCL is input-only - no pull-up required on SCL. |
| SYNC | Multi-device synchronization | Drives or receives 6MHz sync signal to align animation timing across multiple LP5813 units. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous animation engine | Executes preloaded lighting sequences (fade, blink, chase) without MCU CPU cycles - reduces firmware complexity and latency in real-time UI feedback. |
| Time-cross-multiplexing (TCM) | Drives 12 LEDs using only 4 pins with hardware-level de-ghosting - eliminates need for external multiplexing logic and saves PCB area vs. discrete solutions. |
| Ultra-low headroom current sinks | 110mV typical saturation at 25.5mA - enables use of low-Vf red LEDs and maintains efficiency even as battery voltage drops below 3V. |
| Configurable PWM dimming | 8-bit per-LED resolution with linear/exponential curves - achieves perceptually uniform brightness steps and eliminates audible coil whine up to 24kHz. |
| Integrated LED fault detection | Per-channel open-circuit (70–110mV threshold) and short-circuit (32–68% of VOUT) detection - enables fail-safe UI behavior and diagnostics in consumer products. |
Applications
| Earbud Charging Case Indication | Smart Watch Status Lighting |
|---|---|
Use Scenario: Real-time battery level and pairing status shown via multi-color LED ring inside compact charging case. IC Role / Device Role / Timing Role: LP5813CYBHR acts as autonomous LED controller - manages color, intensity, and animation timing independently while MCU sleeps. Use Value: Extends case battery life by 30% vs. MCU-driven PWM due to 0.45mA active current and 0.1μA shutdown, while delivering smooth 24kHz flicker-free illumination. |
Use Scenario: Always-on ambient light sensor-triggered status indicators (e.g., notifications, heart rate) on curved watch bezel. IC Role / Device Role / Timing Role: LP5813CYBHR provides TCM-driven matrix control for 12 discrete LED positions with individual PWM phase shift to eliminate visual scanning artifacts. Use Value: Achieves uniform brightness across curved surface using 4-output TCM topology and ±5% channel-to-channel current matching - no software calibration needed. |
| VR Headset Power-On Sequence | IoT Video Doorbell LED Ring |
Use Scenario: Multi-stage boot animation (pulse → sweep → steady) during VR headset power-up to signal system readiness. IC Role / Device Role / Timing Role: LP5813CYBHR executes synchronized animations across front and side LEDs using internal 6MHz oscillator and SYNC pin daisy-chaining. Use Value: Eliminates MCU timing jitter and inter-device skew - ensures visually coherent lighting effects across 3+ LP5813CYBHR units with sub-microsecond alignment. |
Use Scenario: Weather-resistant LED ring providing motion-triggered status (blue idle → white active → red alert) on outdoor doorbell. IC Role / Device Role / Timing Role: LP5813CYBHR serves as robust LED driver with integrated open/short detection - flags failed LEDs before user notices, reducing field returns. Use Value: Maintains consistent color fidelity across temperature (-40°C to +85°C) using ±5% device-to-device current error spec and programmable VOUT compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RGB LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP5813BYBHR | Different I²C address (bit3=1, bit4=0); identical electrical specs and package | Same functionality; used when multiple LP5813 units share one I²C bus | Select LP5813BYBHR only when requiring distinct I²C addressing on same bus - no performance trade-off. |
| LP5813DYBHR | Different I²C address (bit3=1, bit4=1); identical electrical specs and package | Same functionality; used for fourth device on shared I²C bus with LP5813AYBHR/LP5813BYBHR/LP5813CYBHR | Choose LP5813DYBHR to expand multi-device LED systems beyond three units without bus arbitration hardware. |
Compared with LP5813BYBHR and LP5813DYBHR, LP5813CYBHR offers identical drive capability, efficiency, and feature set but enables unique I²C addressing (bit3=0, bit4=1) - essential for scalable, daisy-chained LED systems where each device must respond to distinct commands without software workarounds.
Availability
LP5813CYBHR is available at Aetrix Electronics and suitable for portable electronics, wearable UI indication, and IoT edge device lighting requiring stable component supply, long-term lifecycle support, and guaranteed authentic sourcing.
Supply support for LP5813CYBHR 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 decades of expertise in power management and LED driver innovation.
The LP5813CYBHR belongs to TI's LP58xx family of autonomous LED drivers, engineered specifically for ultra-low-power, space-constrained RGB indication in battery-operated consumer electronics - prioritizing integration, efficiency, and ease of animation implementation.
FAQ
What is the I²C address of LP5813CYBHR?
The LP5813CYBHR has a fixed I²C slave address determined by its hardware pin configuration: bit4 = 1 and bit3 = 0, resulting in a 7-bit address of 0x2A (with R/W bit). This allows up to four LP5813 variants (AYBHR, BYBHR, CYBHR, DYBHR) to coexist on the same I²C bus without address conflict. The address is non-programmable and verified in TI's SNVSC74C datasheet Section 4.
Does LP5813CYBHR support direct drive mode without multiplexing?
Yes, LP5813CYBHR supports direct drive mode in addition to time-cross-multiplexing (TCM) and mix-drive modes. In direct mode, each of the four outputs (OUT0–OUT3) drives a single LED string independently, bypassing matrix scanning. This mode is selected via the 'drive_mode' register bit and is ideal for applications requiring simultaneous full-brightness operation of fewer than four LEDs.
How does the autonomous animation engine in LP5813CYBHR reduce MCU load?
The LP5813CYBHR autonomous animation engine executes lighting sequences (e.g., fade, blink, chase) directly from internal registers without MCU intervention. Once configured, it runs independently using its 6MHz internal oscillator, freeing the host processor for other tasks. This reduces firmware complexity, eliminates timing-critical PWM updates, and lowers overall system power consumption - especially valuable in Bluetooth LE devices.
What is the minimum input voltage required to start up LP5813CYBHR?
The LP5813CYBHR requires a minimum of 1.8V on VIN to initiate startup (UVLO rising threshold), after which it can operate down to 0.5V. During startup, the device performs soft-start with 450μs typical ramp time to VOUT regulation. Below 0.4V (UVLO falling threshold), LP5813CYBHR enters full shutdown. This 1.8V startup requirement ensures reliable initialization from partially charged batteries in portable systems.
Can LP5813CYBHR drive common-anode RGB LEDs?
No, LP5813CYBHR is designed exclusively for common-cathode RGB LED configurations. Its OUT0–OUT3 pins integrate low-side constant-current sinks and high-side scan switches - meaning each output sources voltage (via VOUT) and sinks current to GND through the LED cathode. Driving common-anode LEDs would require external high-side current sources, which are not supported by the LP5813CYBHR architecture.
LP5813CYBHR 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:
- 1
- Voltage - Supply (Min):
- 0.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 3V ~ 5.5V
- Current - Output / Channel:
- 1.6A (Switch)
- Frequency:
- 500kHz, 1MHz
- Dimming:
- Analog, PWM
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-DSBGA (1.84x1.43)
LP5813CYBHR FAQ
1.How can I place an order for LP5813CYBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5813CYBHR 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 LP5813CYBHR reliable?
The price and inventory of LP5813CYBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5813CYBHR is usually 5 days.
3.What payment methods are accepted for LP5813CYBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5813CYBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5813CYBHR?
LP5813CYBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5813CYBHR 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 LP5813CYBHR?
For technical support, including LP5813CYBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5813CYBHR requirements.
6.How does Aetrix verify that LP5813CYBHR is sourced from the original manufacturer or authorized distributors?
All LP5813CYBHR 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 LP5813CYBHR meets industry standards.
7.What is the process for return or replacement of LP5813CYBHR?
All LP5813CYBHR units undergo pre-shipment inspection (PSI). If there is an issue with LP5813CYBHR, 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 LP5813CYBHR part is unused and in its original packaging.
Return procedure for LP5813CYBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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