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Texas Instruments LP5860TRKPR
- Part No.:
- LP5860TRKPR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
LP5860TRKPR.pdf
- Description:
- 11 X 18 HIGH-CURRENT LED MATRIX
- Quantity:
- Payment:
- Shipping:
Inventory:1,379
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Product details
Overview
LP5860TRKPR from Texas Instruments is an 11 × 18 high-current LED matrix driver IC with 18 constant current sinks and 11 high-side PMOS scan switches, supporting up to 198 individually addressable LED dots. It delivers 100mA per sink at VCC ≥ 3.3V, ±5% device-to-device and channel-to-channel current accuracy, and supports both 8-bit analog dimming and 8-/16-bit audible-noise-free PWM dimming for RGB keyboard backlighting and smart appliance indicators.
For engineers reviewing the LP5860TRKPR datasheet, LP5860TRKPR pinout, LP5860TRKPR application, or LP5860TRKPR equivalent, this page provides verified technical context, validated package mapping (RKP/VQFN-40), confirmed SRAM-based addressing architecture, real-world thermal performance (RθJA = 31.4°C/W), and two manufacturer-validated alternative part options for LED matrix system design.
Technical Context
The LP5860TRKPR implements a time-multiplexed 11-line scan architecture with programmable scan count (6–11 lines) and phase-shifted PWM to balance transient power. Its dual-dimming engine combines global 3-bit maximum current (MC), 3-group 7-bit color current (CC), and per-dot 8-bit dot current (DC) for precise analog control alongside configurable 8-/16-bit PWM generators operating at 62.5 kHz or 125 kHz.
It integrates de-ghosting circuitry (upside/downside), low-brightness compensation across three CS groups, full SRAM-based frame buffering, and dual-interface support: I²C up to 1 MHz (fast mode plus) and SPI up to 12 MHz - selected via the IFS pin. Internal LDO powers logic from VCC, while separate VLED and VIO_EN rails enable flexible power domain partitioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7V to 5.5V - supports single-supply operation across 3.3V and 5V systems without level shifters. |
| Max Sink Current | 100mA per CS (VCC ≥ 3.3V) - enables direct drive of high-brightness LEDs without external boost or current amplification. |
| Current Accuracy | ±5% device-to-device and channel-to-channel - ensures uniform LED luminance across full 198-dot matrix without per-channel calibration. |
| PWM Frequency | 62.5 kHz or 125 kHz - eliminates audible noise in consumer-facing backlighting applications like keyboards and appliances. |
| Interface Speed | I²C ≤ 1 MHz (fast mode plus), SPI ≤ 12 MHz - allows rapid frame updates for smooth animation in real-time UIs. |
| Thermal Resistance | RθJA = 31.4°C/W (RKP package) - enables stable operation at 85°C ambient with standard PCB copper area and thermal pad grounding. |
| Shutdown Current | ≤ 1 µA - meets ultra-low-power requirements for always-on indicator systems with battery backup. |
Pinout & Package
RKP package: 40-pin VQFN (5.00 mm × 5.00 mm) with exposed thermal pad. Requires connection of AGND and thermal pad to common ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS0–CS17 | Constant current sink outputs | 18 dedicated current-sink terminals; each drives one LED cathode in multiplexed matrix; floating if unused. |
| SW0–SW10 | High-side PMOS scan switch outputs | 11 high-voltage, low-RDS(on) p-channel drivers (310 mΩ @ 5V); control anode side of LED rows. |
| VLED | LED supply input | Independent power rail for scan switches; decoupled with CVLED capacitor; supports 2.7V–5.5V. |
| VCC / VIO_EN | Core logic supply / digital I/O enable | VCC powers internal LDO; VIO_EN supplies I/O buffers and enables chip - requires 1nF local decoupling. |
| IFS | Interface select input | Logic-level control: Low = I²C mode (SDA/SCL), High = SPI mode (MOSI/MISO/SS/SCLK). |
| VCAP | Internal LDO output | 1.78V regulated output; must be decoupled with 1µF capacitor to GND for stable core voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Full SRAM frame buffer | Enables partial or full frame refresh without host CPU intervention - reduces data traffic and bus load during animation. |
| Programmable de-ghosting | Configurable upside (scan line discharge) and downside (current sink pre-charge) ghost cancellation - eliminates false LED turn-on in dense matrices. |
| Three-group low-brightness compensation | Per-group correction (CS0/3/6/9/12/15, etc.) mitigates color shift and non-uniformity below 10% duty cycle - critical for UI legibility at night. |
| Individual 8-/16-bit PWM per dot | Supports both fine-grained (256-step) and ultra-smooth (65,536-step) dimming - selectable per LED for mixed-brightness displays. |
| Open/short LED detection | Hardware-accelerated fault detection on all 18 sinks using VLOD_TH (0.25V) and VLSD_TH (VLED – 1V) thresholds - enables fail-safe UI reporting. |
Applications
| Smart Appliance Indicator Panels | RGB Mechanical Keyboard Backlighting |
|---|---|
|
Use Scenario: Multi-zone status lighting on washing machines, ovens, and HVAC controllers with animated feedback. IC Role / Device Role / Timing Role: Primary LED matrix controller managing 198 discrete dots across 11 rows and 18 columns using time-multiplexed scanning. Use Value: Enables rich visual UX (e.g., progress bars, icon animations) with zero microcontroller overhead via SRAM frame buffering and hardware de-ghosting. |
Use Scenario: Per-key RGB illumination with smooth gradient effects and responsive keypress feedback. IC Role / Device Role / Timing Role: Dedicated LED driver handling 100mA per key LED while synchronizing 125kHz PWM across all keys to eliminate buzz. Use Value: Delivers flicker-free, silent illumination with individual 16-bit PWM control - essential for premium gaming peripherals. |
| Outdoor Keypad Backlighting | IR Module Status Indication |
|
Use Scenario: Weather-resistant keypad lighting for building access systems requiring high brightness and wide temperature operation. IC Role / Device Role / Timing Role: High-current sink driver delivering 100mA per LED under 85°C ambient, with thermal shutdown at 150°C junction. Use Value: Maintains consistent luminance across -40°C to +85°C via ±5% current matching and low-VSAT design (0.7V @ 100mA). |
Use Scenario: Visual confirmation of IR emitter activity in video surveillance and IP camera modules. IC Role / Device Role / Timing Role: Low-latency LED driver synchronized to IR burst timing via VSYNC input for precise activity correlation. Use Value: Eliminates timing ambiguity between IR transmission and user-visible feedback using hardware VSYNC-triggered display modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED matrix driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP5866TRKPR | 6-line scan (108 LED dots), same RKP package and 100mA sink rating; lower max dot count but identical interface and register map. | Better suited for compact 6×18 or 4×27 RGB layouts where full 11-line capability is unnecessary. | Select when board space or LED count permits reduced scan complexity and lower dynamic power consumption. |
| LP5860MRKPR | Extended temperature grade (–55°C to +125°C); otherwise identical functionality and pinout; higher VSAT (0.8V @ 100mA). | Required for aerospace, industrial, or automotive under-hood environments exceeding 85°C ambient. | Choose only when extended temperature qualification is mandatory - not a drop-in replacement for commercial-grade designs. |
Compared with LP5866TRKPR and LP5860MRKPR, the LP5860TRKPR uniquely balances maximum 198-dot capacity with commercial-temperature reliability and lowest VSAT (0.7V) for minimal power loss in high-current backlighting.
Availability
LP5860TRKPR is available at Aetrix Electronics and suitable for smart appliance indicator panels, RGB mechanical keyboard backlighting, and outdoor keypad backlighting requiring stable component supply across production lifecycles.
Supply support for LP5860TRKPR 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 high-reliability power management solutions for industrial, automotive, and consumer markets.
The LP5860TRKPR belongs to TI's LP58xx LED matrix driver family, engineered specifically for high-density, high-current, animated LED interfaces in cost-sensitive, thermally constrained consumer and industrial UI applications.
FAQ
What is the maximum number of LEDs the LP5860TRKPR can drive?
The LP5860TRKPR drives up to 198 LED dots using its 11 high-side scan switches and 18 constant current sinks in an 11 × 18 matrix configuration. This supports 66 RGB pixels or 198 monochrome indicators. The scan count is programmable from 6 to 11 lines, and the LP5860TRKPR does not support expansion beyond 198 dots without external multiplexing.
Does the LP5860TRKPR support both I²C and SPI interfaces simultaneously?
No - the LP5860TRKPR uses a single hardware interface selected by the IFS pin: low for I²C (SCL_SCLK/SDA_MOSI/ADDRx), high for SPI (SCLK/MOSI/MISO/SS). Both protocols share physical pins but cannot operate concurrently. Interface selection is static at power-up and requires a hardware change to switch.
What is the purpose of the VCAP pin on the LP5860TRKPR?
The VCAP pin is the output of the internal LDO regulator, providing a stable ~1.78V supply for the LP5860TRKPR's digital core. It must be decoupled with a 1µF ceramic capacitor to AGND, placed as close as possible to the pin. Failure to properly decouple VCAP risks logic instability, register corruption, or failure to exit shutdown mode.
How does the LP5860TRKPR handle LED open-circuit and short-circuit faults?
The LP5860TRKPR implements hardware-based LED fault detection on all 18 current sinks. Open detection triggers when sink voltage exceeds 0.25V (VLOD_TH); short detection activates when voltage drops below (VLED – 1V) (VLSD_TH). Detected faults are reported via status registers and do not require host polling - enabling immediate UI response or system-level error logging.
Can the LP5860TRKPR achieve true 16-bit PWM resolution across all 198 LEDs simultaneously?
Yes - the LP5860TRKPR supports individual 16-bit PWM dimming per LED dot when configured in Mode 2 or Mode 3, using its internal 32MHz oscillator and programmable PWM frequency divider. All 198 channels maintain independent 16-bit resolution without sacrificing frame rate, enabled by the full SRAM frame buffer and hardware PWM generators.
LP5860TRKPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- Yes
- Number of Outputs:
- 18
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 2.7V ~ 5.5V
- Current - Output / Channel:
- 100mA
- Frequency:
- 31.2MHz
- Dimming:
- Analog, I2C, PWM, SPI
- Applications:
- Backlight, Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VQFN (5x5)
LP5860TRKPR FAQ
1.How can I place an order for LP5860TRKPR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5860TRKPR 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 LP5860TRKPR reliable?
The price and inventory of LP5860TRKPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5860TRKPR is usually 5 days.
3.What payment methods are accepted for LP5860TRKPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5860TRKPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5860TRKPR?
LP5860TRKPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5860TRKPR 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 LP5860TRKPR?
For technical support, including LP5860TRKPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5860TRKPR requirements.
6.How does Aetrix verify that LP5860TRKPR is sourced from the original manufacturer or authorized distributors?
All LP5860TRKPR 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 LP5860TRKPR meets industry standards.
7.What is the process for return or replacement of LP5860TRKPR?
All LP5860TRKPR units undergo pre-shipment inspection (PSI). If there is an issue with LP5860TRKPR, 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 LP5860TRKPR part is unused and in its original packaging.
Return procedure for LP5860TRKPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP5860TRKPR Tags
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