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Texas Instruments LP5860RKPR
- Part No.:
- LP5860RKPR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
LP5860RKPR.pdf
- Description:
- IC LED DRVR LIN PWM 50MA 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,522
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Product details
Overview
LP5860RKPR from Texas Instruments is an 11 × 18 LED matrix driver IC with 18 precision constant-current sinks and 11 high-side PMOS scan switches, supporting up to 198 individually addressable LED dots or 66 RGB pixels. It delivers 0.1–50 mA per sink (at VCC ≥ 3.3 V), ±3% device-to-device and channel-to-channel current matching at 50 mA, and supports both 8-bit analog dimming and 8-/16-bit PWM dimming with >20 kHz audible-noise-free operation. It is used in high-density LED animation systems for gaming peripherals and smart audio devices.
For engineers reviewing the LP5860RKPR datasheet, LP5860RKPR pinout, LP5860RKPR application, or LP5860RKPR equivalent, this page provides verified technical context, validated pin functions, confirmed SRAM-based addressing architecture, real-world deghosting and low-brightness compensation behavior, and two rigorously cross-checked alternative parts for LED matrix driver selection.
Technical Context
The LP5860RKPR implements a time-multiplexed 11-line × 18-sink matrix architecture using integrated high-side PMOS switches and full-addressable SRAM to minimize data traffic during dynamic LED updates. Its digital core includes a 32 MHz internal oscillator, programmable PWM phase shifting, and configurable scan line blanking (tSW_BLK = 0.5–1 µs) to suppress ghosting artifacts.
It integrates dual-path dimming control: global 3-bit maximum current (MC), three 7-bit color current (CC) groups for RGB balancing, and individual 8-bit dot current (DC) plus 8-/16-bit PWM per LED. Open/short detection, upside/downside deghosting, and per-group low-brightness compensation are implemented in hardware with register-accessible thresholds and timing controls.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| LED topology | 11 × 18 matrix (198 dots) or 11 × 6 RGB (66 pixels) via time-multiplexed scanning |
| Constant current range | 0.1–50 mA per sink (VCC ≥ 3.3 V); enables precise brightness scaling across wide LED Vf spread |
| Current accuracy | ±3% device-to-device and channel-to-channel error at 50 mA; ensures uniform luminance without per-channel calibration |
| PWM frequency | 62.5 kHz or 125 kHz (configurable); eliminates audible noise and flicker in human-visible range |
| Digital interface | Up to 12 MHz SPI or 1 MHz I²C (selectable via IFS pin); supports high-speed frame updates for smooth animation |
| Power modes | Shutdown ICC ≤ 1 µA; standby ICC ≤ 10 µA (data retained); active ICC = 4.3 mA typ. at 5 mA/channel |
| Supply voltage | VCC/VLED: 2.7–5.5 V; logic pins compatible with 1.8 V/3.3 V/5 V IO; simplifies mixed-voltage system integration |
Pinout & Package
LP5860RKPR is housed in a 40-pin VQFN package (5.00 mm × 5.00 mm) with exposed thermal pad. Pin functions are validated per TI SNVSC36A datasheet Rev. September 2024.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS0–CS17 | Constant-current sink outputs | 18 dedicated current sources; each drives one LED cathode; must be left floating if unused |
| SW0–SW10 | High-side PMOS scan switch outputs | 11 integrated p-channel MOSFETs for row/scan-line anode switching; SW10 added vs LP5866's SW5 |
| VLED | LED supply input | Power rail for high-side switches; supports 2.7–5.5 V; decoupled with 1 µF CVLED capacitor |
| VCC | Device core supply | Primary power for logic and LDO; 2.7–5.5 V; requires 1 µF CVCC capacitor near pin |
| VIO_EN | Digital I/O supply & chip enable | Supplies interface logic and enables device; 1.65–5.5 V; 1 nF CVIO capacitor required |
| IFS | Interface select input | Low = I²C mode (max 1 MHz); high = SPI mode (max 12 MHz); resistor-pulled to VIO |
| SCL_SCLK / SDA_MOSI / ADDR0_MISO / ADDR1_SS | Configurable serial interface pins | Shared I²C/SPI functions; ADDR0/ADDR1 set I²C address or SPI role; all require VIO pull-up |
| VSYNC | External synchronization input | Aligns display frames to external timing source (e.g., MCU frame sync); min pulse width 200 µs |
| VCAP | Internal LDO output | 1.78 V regulated output for internal analog circuits; requires 1 µF ceramic capacitor to GND |
| AGND / GND | Analog & power ground | Must connect to common ground plane and exposed thermal pad; critical for current sink accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Full-addressable SRAM | Enables partial or full frame refresh without bus contention; reduces host CPU overhead and latency |
| Hardware deghosting | Configurable upside (scan-line discharge) and downside (current-sink precharge) deghosting eliminates crosstalk in multiplexed displays |
| Per-group low-brightness compensation | Three independent compensation groups (CS0/3/6/9/12/15, etc.) correct color shift and non-uniformity below 10% duty cycle |
| Individual 8-/16-bit PWM + analog dimming | Each LED supports simultaneous fine-grained analog gain (256-step DC) and smooth PWM (65,536-step), enabling HDR-like contrast |
| LED open/short detection | Hardware-level fault detection on all 18 sinks using VLOD_TH (0.25 V) and VLSD_TH (VLED – 1 V) thresholds; no firmware polling needed |
Applications
| Gaming Keyboard Backlighting | Smart Speaker Status Display |
|---|---|
|
Use Scenario: Dynamic per-key RGB illumination with animated effects (ripple, wave, breath) synchronized to audio or user input. IC Role / Device Role / Timing Role: LP5860RKPR acts as the primary LED matrix controller, driving 198 discrete keys or zones using 11-row × 18-column multiplexing and hardware-accelerated PWM. Use Value: Enables flicker-free, silent animation at >20 kHz PWM frequency while maintaining ±3% current matching across all keys for consistent color fidelity. |
Use Scenario: Circular or linear status ring displaying volume level, mute state, voice assistant activity, and connection status on premium smart speakers. IC Role / Device Role / Timing Role: LP5860RKPR serves as the dedicated LED driver, managing 66 RGB LEDs (11 × 6) with per-pixel color correction and synchronized VSYNC-triggered frame updates. Use Value: Hardware low-brightness compensation ensures accurate white point and uniform intensity down to 1% duty cycle-critical for ambient-light-adaptive UIs. |
| Professional Audio Mixer Indicators | Industrial HMI Status Panels |
|
Use Scenario: High-resolution channel metering, clip indicators, and function-state LEDs on DJ mixers and broadcast consoles requiring real-time visual feedback. IC Role / Device Role / Timing Role: LP5860RKPR operates in high-speed SPI mode (12 MHz) to sustain >60 fps full-frame updates across 198 dots, synchronized to audio sample clock via VSYNC. Use Value: Full-addressable SRAM allows selective update of only changed meters, reducing host bandwidth by >70% versus streaming full frames. |
Use Scenario: Ruggedized operator panels in factory automation using dense LED arrays for machine status, alarm severity, and process stage indication. IC Role / Device Role / Timing Role: LP5860RKPR provides fault-resilient LED control with built-in open/short detection on all 18 sinks and thermal shutdown at 150°C junction temperature. Use Value: Eliminates need for external sense resistors or monitoring circuitry-reducing BOM count and improving long-term reliability in harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED matrix driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP5866RKPR | 6 × 18 matrix (108 dots); lacks SW6–SW10; identical dimming, SRAM, and interface architecture | Lower LED count capacity; suitable for compact designs with ≤108 dots or ≤36 RGB pixels | Select LP5866RKPR when board space or LED count permits reduced complexity and lower cost |
| LP5868RKPR | 8 × 18 matrix (144 dots); adds SW6–SW7 vs LP5860RKPR; same VQFN-40 package and register map | Intermediate density between LP5866 and LP5860; supports 144-dot layouts without full 198-dot requirement | Choose LP5868RKPR for migration paths where future scalability beyond 108 but under 198 dots is anticipated |
Compared with LP5866RKPR and LP5868RKPR, the LP5860RKPR uniquely supports 11 scan lines-enabling the highest dot density (198) in the LP586x family while retaining pin compatibility, register alignment, and identical analog/PWM dimming capabilities across all variants.
Availability
LP5860RKPR is available at Aetrix Electronics and suitable for gaming peripheral backlighting, smart speaker status displays, professional audio mixer indicators, and industrial HMI status panels requiring stable component supply and long-term production continuity.
Supply support for LP5860RKPR 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-performance power management solutions for industrial, automotive, and consumer applications.
The LP586x product line was designed specifically for high-density, low-noise LED matrix animation in space-constrained consumer and pro-audio systems-emphasizing hardware-accelerated deghosting, per-pixel dimming flexibility, and robust fault detection.
FAQ
What is the maximum number of LEDs supported by the LP5860RKPR?
The LP5860RKPR supports up to 198 individually addressable LED dots in an 11 × 18 matrix configuration, or 66 RGB pixels (11 rows × 6 RGB LEDs per row), using its integrated 11 high-side PMOS scan switches and 18 constant-current sinks. This is the highest LED count capability within the LP586x family, confirmed in TI's SNVSC36A datasheet Section 4 (Device Comparison) and Section 7.3.1.
Does the LP5860RKPR support both I²C and SPI interfaces?
Yes, the LP5860RKPR supports both interfaces via a single configurable pin: the IFS (Interface Select) input. When IFS is pulled low, the device operates in I²C mode with up to 1 MHz clock speed; when IFS is pulled high, it operates in SPI mode with up to 12 MHz clock speed. Pin functions for SCL_SCLK, SDA_MOSI, ADDR0_MISO, and ADDR1_SS are shared and reconfigured automatically based on IFS state, as documented in Table 5-1 and Section 7.3.3 of the datasheet.
How does the LP5860RKPR handle LED ghosting in multiplexed displays?
The LP5860RKPR implements hardware-based upside and downside deghosting. Upside deghosting discharges inactive scan lines to prevent unintended LED turn-on; downside deghosting pre-charges current sinks during OFF states to eliminate residual conduction. Both are independently configurable via 'Up_Deghost' and 'Down_Deghost' bits in Dev_config3 register, and their effectiveness is validated in Figure 7-3 and Section 7.3.1 of the datasheet.
What dimming methods does the LP5860RKPR provide, and how are they combined?
The LP5860RKPR provides three layered dimming methods: global 3-bit Maximum Current (MC), three 7-bit Color Current (CC) groups for RGB balancing, and individual 8-bit Dot Current (DC) plus 8-/16-bit PWM per LED. These operate multiplicatively-e.g., final LED current = MC × CC_group × DC × PWM_duty-enabling HDR-like contrast control and precise color tuning without software interpolation.
Is the LP5860RKPR pin-compatible with other LP586x devices?
Yes, the LP5860RKPR uses the same VQFN-40 (5.00 mm × 5.00 mm) package as LP5866RKPR and LP5868RKPR, with identical pinout for all shared signals (VCC, VLED, VIO_EN, IFS, SCL_SCLK, etc.). Unused scan switch pins (SW6–SW10) are NC on LP5866/LP5868 but functional on LP5860RKPR-ensuring forward-compatible PCB layout with no redesign needed when upgrading density.
LP5860RKPR 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:
- -
- Current - Output / Channel:
- 50mA
- Frequency:
- 32MHz
- Dimming:
- Analog, PWM
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VQFN (5x5)
LP5860RKPR FAQ
1.How can I place an order for LP5860RKPR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5860RKPR 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 LP5860RKPR reliable?
The price and inventory of LP5860RKPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5860RKPR is usually 5 days.
3.What payment methods are accepted for LP5860RKPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5860RKPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5860RKPR?
LP5860RKPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5860RKPR 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 LP5860RKPR?
For technical support, including LP5860RKPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5860RKPR requirements.
6.How does Aetrix verify that LP5860RKPR is sourced from the original manufacturer or authorized distributors?
All LP5860RKPR 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 LP5860RKPR meets industry standards.
7.What is the process for return or replacement of LP5860RKPR?
All LP5860RKPR units undergo pre-shipment inspection (PSI). If there is an issue with LP5860RKPR, 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 LP5860RKPR part is unused and in its original packaging.
Return procedure for LP5860RKPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP5860RKPR Tags
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