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Texas Instruments LP5891ZXLR
- Part No.:
- LP5891ZXLR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 96-TFBGA
- Datasheet:
-
LP5891ZXLR.pdf
- Description:
- 48 16 LED MATRIX DRIVER WITH 16-
- Quantity:
- Payment:
- Shipping:
Inventory:2,229
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Product details
Overview
LP5891ZXLR from Texas Instruments is a 48-channel common-cathode RGB LED matrix driver with 16 integrated scan-line FETs, supporting up to 64×64 RGB pixels via four-device stacking. It delivers precise constant-current outputs (0.2–20 mA per channel), ±0.5% typical channel-to-channel accuracy, and operates across –40°C to +85°C ambient temperature. It targets high-density LED backlighting in gaming keyboards and broadcast equipment.
For engineers reviewing the LP5891ZXLR datasheet, LP5891ZXLR pinout, LP5891ZXLR application, or LP5891ZXLR equivalent, key selection factors include its 96-pin BGA package, independent VR/VG/VB power rails, 16-bit PWM grayscale control, LED open/short detection capability, and CCSI interface with 50-MHz max SCLK - all critical for low-EMI, high-refresh-rate RGB matrix designs.
Technical Context
The LP5891ZXLR implements a rising-edge Continuous Clock Series Interface (CCSI) with only three wires (SCLK/SIN/SOUT), enabling daisy-chained configurations of up to four devices while minimizing EMI. Its internal frequency multiplier supports GCLK rates from 40 MHz to 160 MHz, decoupled from the external 50-MHz SCLK limit.
It integrates SRAM for 1–64 multiplexing, supports intelligent power-saving mode (ICC = 0.9 mA), and features per-color 8-bit brightness control plus 3-bit global control. Built-in LED fault detection (open, weak-short, short) reports status to host controllers without external circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.5 V–5.5 V: Enables direct connection to standard logic rails (e.g., 3.3 V or 5 V systems) without level-shifting. |
| VR/VG/VB Range | 2.5 V–5.5 V: Allows independent optimization of red, green, and blue LED forward voltages for color fidelity and efficiency. |
| Output Current | 0.2 mA–20 mA per channel: Supports wide LED brightness range while maintaining ±0.5% typical channel matching. |
| Knee Voltage | 0.26 V max at 5 mA: Minimizes voltage headroom loss, enabling operation with low-Vf micro-LEDs or tight supply margins. |
| RDS(ON) | 190 mΩ for scan switches: Reduces conduction loss during active scanning, critical for thermal management in high-duty-cycle displays. |
| Operating Temp | –40°C to +85°C: Qualified for industrial and commercial indoor environments including gaming peripherals and audio mixers. |
| CCSI SCLK Max | 50 MHz: Enables fast data loading (e.g., full 64×64 frame in <1.3 ms at 50 MHz), supporting >240 Hz refresh rates. |
Pinout & Package
LP5891ZXLR uses a 96-pin BGA package (6 mm × 6 mm body size) with exposed thermal pad connected to GND. Pin functions are defined per TI SLDS269A datasheet Figure 5-2 and Table 5-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IREF | Reference current setting input | Connects external resistor to set max output current; 0.8 V nominal reference voltage enables precise, temperature-stable current programming. |
| VCC | Core logic supply | Powers digital core and interface; independent from LED supplies, allowing low-power standby while LEDs remain biased. |
| VR / VG / VB | Red/Green/Blue LED anode supplies | Separate inputs enable dynamic adjustment of per-color voltage to match Vf drift and optimize efficiency. |
| R0–R15 / G0–G15 / B0–B15 | Constant-current LED cathode outputs | 48 dedicated channels grouped by color; each drives one LED cathode in common-cathode matrix topology. |
| LINE0–LINE15 | Scan-line switch outputs | 16 high-side FETs (190 mΩ RDS(ON)) drive LED anodes row-wise; support daisy-chained stacking via configurable scan sequencing. |
| SCLK / SIN / SOUT | CCSI serial interface | 3-wire daisy-chain interface: SCLK (50 MHz max), SIN (data in), SOUT (data out); eliminates parallel bus routing and reduces EMI. |
| GND (multiple pins + thermal pad) | Power and signal reference | Multiple GND connections and thermal pad ensure low-impedance return path and efficient heat dissipation in compact layouts. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit PWM grayscale control | 65,536-step intensity resolution per channel enables smooth dimming and high-fidelity color gradients without visible banding. |
| Built-in LED fault detection | Real-time open, weak-short, and short detection on all 48 outputs - reported via register read - eliminates need for external sensing circuitry. |
| Stackable architecture | Four LP5891ZXLR devices can be daisy-chained to drive 64×64 RGB matrices; scan sequencing and memory mapping handled internally. |
| Ultra-low power modes | Intelligent power save mode draws only 0.9 mA ICC, reducing system-level power consumption during idle or low-brightness states. |
| Low-knee constant-current drivers | 0.26 V max knee voltage at 5 mA allows use with low-Vf micro-LEDs and extends usable voltage margin for battery-powered applications. |
Applications
| Gaming Keyboard Backlighting | Audio Mixer Status Indicators |
|---|---|
Use Scenario: High-density RGB backlighting for mechanical keycaps with per-key color animation and dynamic lighting effects. IC Role / Device Role / Timing Role: LP5891ZXLR acts as the primary LED matrix controller, driving 16×16 RGB zones per device with synchronized PWM timing and scan-line sequencing. Use Value: 16-bit grayscale and per-color brightness control enable smooth transitions and accurate color reproduction; CCSI interface simplifies PCB routing in space-constrained keyboard PCBs. |
Use Scenario: Real-time visual feedback for channel mute/solo, gain staging, and signal clipping on professional DJ and broadcast mixing consoles. IC Role / Device Role / Timing Role: LP5891ZXLR serves as a fault-aware LED driver, delivering precise current to status LEDs while reporting open/short faults to prevent misleading indicators. Use Value: Built-in LED diagnostics eliminate false status indications; low-knee voltage ensures reliable operation with diverse LED types used across mixer front panels. |
| Mini-LED Local Dimming Panel | RGB Luminous Control Panel |
Use Scenario: Local dimming backlight for high-dynamic-range displays using dense arrays of mini-LEDs segmented into independently controlled zones. IC Role / Device Role / Timing Role: LP5891ZXLR provides per-zone constant-current drive and PWM timing for local dimming control, coordinated via daisy-chained CCSI interface. Use Value: ±0.5% channel-to-channel current matching ensures uniform luminance across dimming zones; stackable architecture scales to 64×64 zone control without additional controllers. |
Use Scenario: Customizable illuminated control surfaces in studio monitors, synthesizers, and smart home hubs requiring programmable RGB feedback per button or slider. IC Role / Device Role / Timing Role: LP5891ZXLR functions as a compact, self-contained LED driver with embedded SRAM, storing frame data for static or animated panel states. Use Value: On-chip SRAM eliminates external memory; 3-wire CCSI interface reduces MCU GPIO count and simplifies firmware updates for dynamic UI elements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar RGB LED matrix driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC59731 | 12-channel, 16-bit PWM, no scan-line switches; requires external MOSFETs for row driving | Limited to smaller matrices (e.g., 12×N); lacks integrated fault detection and stacking capability | Select when driving low-channel-count linear LED strips or when external row control is already present. |
| IS31FL3733 | 28-channel, 12-bit PWM, integrated scan drivers, but only 128 Hz max refresh at full load; no CCSI interface | Lower grayscale resolution and slower interface limit suitability for high-speed animation or large matrices | Select for cost-sensitive consumer panels where 12-bit grayscale and lower refresh suffice. |
Compared with TLC59731 and IS31FL3733, LP5891ZXLR offers higher channel count (48), deeper grayscale (16-bit), integrated 16-line scanning, and daisy-chain scalability - making it uniquely suited for demanding, high-resolution RGB matrix applications requiring reliability and design simplicity.
Availability
LP5891ZXLR is available at Aetrix Electronics and suitable for gaming peripheral manufacturing, broadcast equipment integration, and mini-LED backlighting projects requiring stable component supply and long-term production continuity.
Supply support for LP5891ZXLR 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 precision power management and LED driver innovation.
The LP5891 product line was designed specifically for high-density, high-fidelity RGB LED matrix applications - emphasizing low EMI, fault resilience, and scalable architecture for gaming, pro-audio, and display systems.
FAQ
What is the operating temperature range for LP5891ZXLR?
The LP5891ZXLR is rated for ambient operating temperatures from –40°C to +85°C, as confirmed in Section 6.3 of the TI SLDS269A datasheet. This range applies specifically to the LP5891RRFR and LP5891ZXLR variants, distinguishing them from the extended-temperature LP5891MRRFR (–55°C to +125°C). LP5891ZXLR is qualified for commercial and industrial indoor applications.
Does LP5891ZXLR support daisy-chaining with other LP5891 devices?
Yes, LP5891ZXLR supports daisy-chaining via its Continuous Clock Series Interface (CCSI) using SCLK, SIN, and SOUT pins. Up to four LP5891ZXLR devices can be stacked to drive larger matrices (e.g., 64×64 RGB pixels), with scan-line sequencing and memory mapping managed through configuration registers FC2 and FC4.
How is output current programmed on LP5891ZXLR?
Output current on LP5891ZXLR is set by an external resistor connected between IREF and GND, establishing a 0.8 V reference. The resulting current is scaled by an 8-bit per-color brightness control (CC_R/G/B) and a 3-bit global brightness control (BC), enabling fine-grained adjustment from 0.2 mA to 20 mA per channel with ±0.5% typical matching.
What fault detection capabilities does LP5891ZXLR provide?
LP5891ZXLR implements real-time LED open, weak-short, and short detection on all 48 constant-current outputs. Detection status is stored in dedicated registers (e.g., FAULT_STATUS) and can be read back via the CCSI interface - eliminating the need for external sensing components and enabling robust system-level diagnostics in LP5891ZXLR-based designs.
What package type is used for LP5891ZXLR?
LP5891ZXLR uses a 96-pin BGA package with 6 mm × 6 mm body size and an exposed thermal pad, as specified in the "Device Information" table of the TI SLDS269A datasheet. This differs from the 76-pin VQFN (9 mm × 9 mm) used by LP5891RRFR, and the package is not interchangeable without PCB redesign.
LP5891ZXLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 96-TFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 48
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- -
- Current - Output / Channel:
- 20mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 96-NFBGA (6x6)
LP5891ZXLR FAQ
1.How can I place an order for LP5891ZXLR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5891ZXLR 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 LP5891ZXLR reliable?
The price and inventory of LP5891ZXLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5891ZXLR is usually 5 days.
3.What payment methods are accepted for LP5891ZXLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5891ZXLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5891ZXLR?
LP5891ZXLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5891ZXLR 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 LP5891ZXLR?
For technical support, including LP5891ZXLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5891ZXLR requirements.
6.How does Aetrix verify that LP5891ZXLR is sourced from the original manufacturer or authorized distributors?
All LP5891ZXLR 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 LP5891ZXLR meets industry standards.
7.What is the process for return or replacement of LP5891ZXLR?
All LP5891ZXLR units undergo pre-shipment inspection (PSI). If there is an issue with LP5891ZXLR, 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 LP5891ZXLR part is unused and in its original packaging.
Return procedure for LP5891ZXLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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