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Texas Instruments LP5867YBHR
- Part No.:
- LP5867YBHR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 24-XFBGA, DSBGA
- Datasheet:
-
LP5867YBHR.pdf
- Description:
- 7 X 6 LED MATRIX DRIVER WITH 8-B
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
LP5867YBHR from Texas Instruments is a 7 × 6 LED matrix driver IC with integrated 6 constant-current sinks and 7 high-side PMOS scan switches, supporting up to 42 individually addressable LED dots or 14 RGB pixels. It delivers 0.1–50 mA per sink (VCC ≥ 3.3 V), ±3% device-to-device and channel-to-channel current accuracy at 50 mA, and supports both 8-bit analog dimming and configurable 8-/16-bit PWM dimming for audible-noise-free operation in portable wearables and IoT indicators.
For engineers reviewing the LP5867YBHR datasheet, LP5867YBHR pinout, LP5867YBHR application, or LP5867YBHR equivalent, key selection criteria include its WCSP-24 package footprint, dual I²C (1 MHz) / SPI (12 MHz) interface flexibility, full SRAM-based frame control, and hardware-level de-ghosting + low-brightness compensation essential for high-fidelity LED animation in space-constrained designs.
Technical Context
The LP5867YBHR implements time-multiplexed matrix driving using 7 programmable scan lines and 6 current sinks, with configurable line count (1–7), phase-shifted PWM timing, and blank-time control to minimize transient power spikes. Its internal 32-MHz oscillator feeds configurable 62.5 kHz or 125 kHz PWM generators per LED dot.
It integrates hardware de-ghosting (upside discharge + downside pre-charge), three-group low-brightness compensation (CSR/CSG/CSB), and individual open/short detection per current sink - all managed via register-mapped SRAM with partial-update capability to reduce host MCU bandwidth overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC/VLED Range | 2.7 V to 5.5 V - supports single-supply operation across Li-ion, USB, and logic rails without level shifters. |
| Constant Current Range | 0.1 mA to 50 mA per sink (VCC ≥ 3.3 V) - enables precise brightness control from indicator-level to high-intensity status lighting. |
| Current Accuracy | ±3% device-to-device and channel-to-channel error at 50 mA - ensures uniform luminance across all 42 LEDs without per-unit calibration. |
| PWM Frequency | 62.5 kHz or 125 kHz - eliminates audible noise and flicker in human-visible range while enabling smooth animation transitions. |
| Interface Speed | I²C up to 1 MHz (fast-mode-plus), SPI up to 12 MHz - allows rapid frame updates for dynamic UI effects in real-time applications. |
| Supply Current | ≤1 µA shutdown, ≤10 µA standby, 4.2 mA typical active - extends battery life in always-on wearable and sensor nodes. |
| Package | WCSP-24 (2.55 mm × 1.80 mm) - ultra-compact footprint ideal for thin-profile consumer electronics and compact PCBs. |
Pinout & Package
LP5867YBHR uses a 24-pin Wafer Chip Scale Package (WCSP, YBH) with 0.4-mm pitch and nominal body size 2.55 mm × 1.80 mm. Thermal resistance RθJA = 65.6 °C/W enables operation up to +85 °C ambient without forced cooling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CSR0–CSB1 (Pins C2, B2, B3, B5, C5, C4) | Constant-current sink outputs | Drive cathodes of up to 6 LED columns; each supports 0.1–50 mA with ±3% matching; must float if unused. |
| SW0–SW6 (Pins A1–A6, B6) | High-side PMOS scan switches | Control anode-side scanning of up to 7 LED rows; RDS(on) = 310–750 mΩ depending on VLED; must float if unused. |
| VLED, VCC, VIO/EN (Pins B1, C1, D1) | Power inputs | VLED powers high-side switches; VCC powers core logic; VIO/EN supplies digital I/O and acts as chip enable (active-high). |
| IFS, SCL/SCLK, SDA/MOSI, ADDR0/MISO, ADDR1/SS (Pins C3, D6, D5, D4, D3) | Dual-mode serial interface | IFS selects I²C (low) or SPI (high); pins share functions - no external multiplexer needed; logic compatible with 1.8/3.3/5 V systems. |
| VCAP (Pin D2) | Internal LDO output | Provides regulated voltage for internal circuitry; requires 1 µF ceramic capacitor to GND placed adjacent to pin. |
| GND (Pin B4) | Ground reference | Primary return path for all currents; must connect to low-impedance system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Full addressable SRAM | Enables partial frame updates and eliminates full-buffer rewrites - reduces I²C/SPI traffic by >70% during static content changes. |
| Hardware de-ghosting | Integrated upside (scan-line discharge) and downside (current-sink pre-charge) circuits eliminate unintended LED turn-on without software intervention. |
| Three-group low-brightness compensation | Separately adjusts CSR, CSG, and CSB current sinks to correct color shift and non-uniformity below 10% duty cycle - critical for RGB pixel fidelity. |
| Individual LED open/short detection | Automatically identifies fault conditions per sink and reports status via register flags - enables robust failure diagnostics in production firmware. |
| Configurable PWM resolution | Per-dot 8-bit or 16-bit PWM depth selectable via register - balances update speed (8-bit) vs. smoothness (16-bit) for different animation requirements. |
Applications
| Smartwatch Status Display | Fitness Tracker Indicator Array |
|---|---|
|
Use Scenario: Driving segmented or pixelated status icons (battery, Bluetooth, notifications) on curved, space-limited watch faces. IC Role / Device Role / Timing Role: LED matrix controller managing 42 discrete dots via time-multiplexed scanning with synchronized PWM dimming. Use Value: Ultra-small WCSP-24 footprint and <1 µA shutdown current extend coin-cell battery life beyond 6 months in always-on mode. |
Use Scenario: Animated step-count or heart-rate feedback using multi-color LED patterns on wristband edge indicators. IC Role / Device Role / Timing Role: RGB-capable driver controlling 14 pixels (7 scan × 2 sinks) with independent group-level color current tuning. Use Value: Hardware low-brightness compensation maintains consistent white point and color balance across 0–100% intensity range. |
| IoT Sensor Node Status Panel | Wireless Earbud Charging Case LED |
|
Use Scenario: Visual status feedback (connectivity, firmware update, sensor health) on compact environmental or industrial sensors. IC Role / Device Role / Timing Role: Low-power LED driver interfacing directly to ARM Cortex-M0+ MCU via I²C at 400 kHz. Use Value: Dual 1.8 V / 3.3 V logic compatibility eliminates level-shifter components; 10 µA standby current minimizes quiescent drain. |
Use Scenario: Battery-level and charging-state indication using animated ring or bar patterns inside tight earbud case cavities. IC Role / Device Role / Timing Role: Compact matrix driver delivering synchronized PWM dimming to 42 dots with phase-shifted timing to suppress peak current surges. Use Value: Integrated phase-shift and switch blank time control reduces input capacitance stress and EMI in shared power domains. |
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 | Supports 108 LED dots (18 × 6), higher max current (100 mA/sink), VQFN-40 package (5 mm × 5 mm) | Targeted at larger displays (e.g., smart home hubs), not wearable-scale indicators | Select LP5866RKPR only when >42 LEDs or >50 mA per sink are required; incompatible pinout and layout. |
| LP5864RSMR | Supports 72 LED dots (18 × 4), VQFN-32 package (4 mm × 4 mm), same 50 mA/sink limit but no low-brightness compensation | Suitable for mid-size panels where color fidelity at low intensity is non-critical | LP5864RSMR lacks hardware de-ghosting and low-brightness compensation - requires additional firmware tuning for uniformity. |
Compared with LP5866RKPR and LP5864RSMR, the LP5867YBHR uniquely combines ultra-compact WCSP packaging, hardware-level ghost cancellation, and per-group low-brightness correction - making it the only option optimized for high-fidelity, battery-sensitive wearable LED interfaces.
Availability
LP5867YBHR is available at Aetrix Electronics and suitable for smartwatches, fitness trackers, and IoT sensor nodes requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing for consumer electronics production.
Supply support for LP5867YBHR 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 technologies with over 90 years of innovation in precision analog design.
The LP5867YBHR belongs to TI's LP58xx LED matrix driver family, engineered specifically for high-density, low-power, and visually accurate LED animation in space- and energy-constrained portable electronics.
FAQ
What is the maximum number of LEDs the LP5867YBHR can drive?
The LP5867YBHR drives up to 42 individual LED dots in a 7 × 6 matrix configuration (7 scan lines × 6 constant-current sinks) or 14 RGB pixels (7 scan lines × 2 sinks per color). This is fixed by its internal architecture - no firmware or register configuration increases this limit. Each LED dot is fully addressable via the device's SRAM-based frame buffer.
Does the LP5867YBHR support both I²C and SPI interfaces simultaneously?
No - the LP5867YBHR supports I²C or SPI exclusively, selected by the logic state of the IFS pin. When IFS is low, SCL/SDA/ADDR0/ADDR1 operate as I²C signals (up to 1 MHz). When IFS is high, SCLK/MOSI/MISO/SS function as SPI signals (up to 12 MHz). Pin sharing prevents concurrent use.
How does the LP5867YBHR handle LED open-circuit and short-circuit faults?
The LP5867YBHR performs automatic per-sink open/short detection during normal operation. Open detection triggers at VCS < 0.25 V; short detection activates when VCS > VLED − 1 V. Fault status is latched in dedicated registers (OPEN_FLAG, SHORT_FLAG) and can be read via I²C/SPI - enabling real-time diagnostics without external sensing circuitry.
What is the purpose of the VCAP pin on the LP5867YBHR?
The VCAP pin outputs the regulated voltage from the LP5867YBHR's internal LDO, which powers internal analog blocks. A mandatory 1 µF ceramic capacitor must be placed between VCAP and GND, located as close as possible to the pin. Omitting or misplacing this capacitor causes unstable current regulation and potential display artifacts or reset behavior.
Can the LP5867YBHR drive RGB LEDs with independent color control?
Yes - the LP5867YBHR supports RGB operation via its three programmable color groups: CC_Group1 (CSR0/CSR1), CC_Group2 (CSG0/CSG1), and CC_Group3 (CSB0/CSB1). Each group has independent 7-bit color current scaling (0–100% of max current), allowing precise white-point tuning and dynamic color mixing without MCU-level gamma correction.
LP5867YBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Linear
- Topology:
- Constant Current
- Internal Switch(s):
- Yes
- Number of Outputs:
- 6
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 2.7V ~ 5.5V
- Current - Output / Channel:
- 50mA
- Frequency:
- 31.2MHz
- Dimming:
- Analog, I2C, PWM, SPI
- Applications:
- General Purpose
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-DSBGA (2.55x1.8)
LP5867YBHR FAQ
1.How can I place an order for LP5867YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for LP5867YBHR 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 LP5867YBHR reliable?
The price and inventory of LP5867YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP5867YBHR is usually 5 days.
3.What payment methods are accepted for LP5867YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP5867YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP5867YBHR?
LP5867YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP5867YBHR 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 LP5867YBHR?
For technical support, including LP5867YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP5867YBHR requirements.
6.How does Aetrix verify that LP5867YBHR is sourced from the original manufacturer or authorized distributors?
All LP5867YBHR 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 LP5867YBHR meets industry standards.
7.What is the process for return or replacement of LP5867YBHR?
All LP5867YBHR units undergo pre-shipment inspection (PSI). If there is an issue with LP5867YBHR, 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 LP5867YBHR part is unused and in its original packaging.
Return procedure for LP5867YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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