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Texas Instruments LP8860EQVFPRQ1
- Part No.:
- LP8860EQVFPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerLQFP
- Datasheet:
-
LP8860EQVFPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 32HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,309
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Product details
Overview
LP8860EQVFPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED driver IC with integrated boost controller, four 150mA precision current sinks, 3V–48V input range, and hybrid PWM/current dimming supporting >13,000:1 dimming ratio - used in instrument cluster and infotainment LCD backlight systems.
For engineers reviewing the LP8860EQVFPRQ1 datasheet, LP8860EQVFPRQ1 pinout, LP8860EQVFPRQ1 application, or LP8860EQVFPRQ1 equivalent, key selection criteria include adaptive boost voltage control, I²C/SPI programmability, thermal fault management via external NTC, and EMI-reduction features including spread-spectrum switching and phase-shifted PWM outputs.
Technical Context
The LP8860EQVFPRQ1 integrates a digitally controlled boost converter (100kHz–2.2MHz, spread-spectrum capable) with adaptive output voltage regulation based on real-time LED headroom sensing - minimizing power loss across varying string forward voltages. Its four independent current sinks support both display mode (phase-shifted PWM for ripple/noise reduction) and cluster mode (simplified global dimming).
Control is implemented via dual-interface logic: hardware PWM input (100Hz–500Hz) or configurable I²C/SPI (400kHz I²C, 14MHz SPI), enabling dynamic brightness slope, fault diagnostics (short/open LED, overtemperature, OVP/UVP), and power-line FET sequencing for inrush suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 48V - supports direct connection to automotive battery rail including cold-crank (3V) and load-dump (48V) transients. |
| LED Channel Current | Up to 150mA per channel with ±3% accuracy and 0.5% typical matching - ensures uniform luminance across multi-string displays. |
| Dimming Resolution | 16-bit digital (SPI/I²C) or >13,000:1 analog PWM - enables smooth, flicker-free brightness control for HUD and CID applications. |
| Boost Switching Frequency | Programmable 100kHz–2.2MHz with spread-spectrum option - avoids AM band interference and reduces EMI filter size. |
| Operating Temperature | −40°C to +125°C ambient (AEC-Q100 Grade 1) - validated for under-hood and dashboard mounting locations. |
| Fault Diagnostics | Integrated LED short/open, thermal, VIN OVP/UVP, and boost overcurrent detection with open-drain FAULT pin - enables fail-safe system response. |
Pinout & Package
LP8860EQVFPRQ1 is housed in a 32-pin HLQFP (7.0mm × 7.0mm) package with exposed thermal pad (PowerPAD™). Pin functions are validated per TI SNVSA21H datasheet Rev. APRIL 2025.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | LED current sink outputs | Four independent high-side current sources; each drives up to 150mA with <0.75V saturation at full load. |
| VDD, VDDIO/EN | Core and I/O supply inputs | VDD powers internal circuitry (3–5.5V); VDDIO/EN sets logic level reference and enables device (active-high). |
| PWM, NSS, SCLK/SCL, MOSI/SDA, MISO | Digital control interface pins | Support standalone PWM dimming or full-featured I²C (400kHz)/SPI (14MHz) configuration and status readback. |
| FAULT, SQW, SYNC, VSYNC | System signaling terminals | Open-drain FAULT alerts host MCU; SQW provides auxiliary clock; SYNC/VSYNC enable timing synchronization with display controller or external clock source. |
| ISENSE, GD, FB, SD | Boost power-stage control | ISENSE/GD drive external MOSFET; FB regulates boost output; SD controls external power-line FET for inrush limiting and standby power cut-off. |
| TSENSE, ISET, FILTER | Analog configuration inputs | TSENSE connects external NTC for temperature-dependent current derating; ISET sets max LED current; FILTER configures PLL bandwidth. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Boost Voltage Control | Monitors LED headroom in real time and dynamically adjusts boost output to minimum required level - reducing power loss by up to 15% vs fixed-output designs. |
| Phase-Shifted PWM (PSPWM) | Staggers PWM timing across four channels - cuts peak boost current by ~50%, lowers output ripple, and eliminates audible ceramic capacitor noise. |
| Hybrid Dimming Architecture | Combines analog current scaling with digital PWM - maintains high optical efficiency (>90%) while achieving >13,000:1 dimming range without color shift. |
| Automotive Fault Coverage | Detects and reports LED open/short, thermal runaway, VIN OVP/UVP, boost overcurrent, and TSENSE disconnection - meets ASIL-B diagnostic coverage requirements. |
| EMI Optimization Suite | Includes spread-spectrum switching, programmable frequency (100kHz–2.2MHz), external sync input, and gate-drive strength tuning - simplifies CISPR-25 Class 5 compliance. |
Applications
| Automotive Instrument Clusters | Central Information Displays (CID) |
|---|---|
Use Scenario: High-brightness, wide-temperature TFT-LCD backlight with dynamic contrast and night/day mode switching. IC Role / Device Role / Timing Role: Four-channel LED driver with adaptive boost and phase-shifted PWM ensures uniform illumination and low EMI in confined gauge cluster PCB layout. Use Value: Maintains >90% system efficiency across 3V–16V input range while suppressing audible noise and meeting CISPR-25 radiated emissions limits. |
Use Scenario: Large-format LCD backlight requiring precise luminance uniformity and seamless brightness transitions during navigation UI updates. IC Role / Device Role / Timing Role: Configurable display mode driver synchronizes LED PWM to display refresh (via VSYNC) and implements programmable brightness slope for perceptually smooth transitions. Use Value: 16-bit dimming resolution and thermal derating via TSENSE prevent hot-spotting and extend LED lifetime beyond 10,000 hours at 85°C ambient. |
| Heads-Up Displays (HUD) | Smart Rearview Mirrors |
Use Scenario: Compact projection-based HUD with high-luminance LED array and strict EMI constraints near ADAS sensors. IC Role / Device Role / Timing Role: Boost controller operates at 2.2MHz with spread spectrum to avoid RF interference; PSPWM minimizes conducted noise on shared power rails. Use Value: Enables Class 5 CISPR-25 compliance without additional ferrite beads or shielding - reducing BOM cost and board area by 22%. |
Use Scenario: Auto-dimming electrochromic mirror with integrated status indicators and ambient light-adaptive backlighting. IC Role / Device Role / Timing Role: Cluster mode operation provides simplified global dimming control via single PWM input; power-line FET control (SD pin) enables zero-power standby. Use Value: Reduces quiescent current to 5μA in shutdown and supports wake-on-fault functionality for always-on safety monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP8862-Q1 | 2-channel, 160mA/channel, no I²C/SPI, adds SEPIC support | Suitable for simpler dual-string clusters where serial configurability is unnecessary | Choose LP8862-Q1 only when channel count and interface flexibility are secondary to cost and SEPIC topology requirement. |
| TPS61194-Q1 | 4-channel, 100mA/channel, no boost sync or spread spectrum, fixed 2.2MHz switching | Targeted at space-constrained CIDs with lower current demand and relaxed EMI targets | Select TPS61194-Q1 if system-level EMI filtering is already sufficient and thermal derating via external sensor is not required. |
Compared with LP8860EQVFPRQ1, LP8862-Q1 reduces channel count and removes digital interface but adds SEPIC capability for buck-boost flexibility, while TPS61194-Q1 trades current capacity and advanced EMI features for smaller solution size - making LP8860EQVFPRQ1 optimal for high-fidelity, thermally managed, and EMI-sensitive automotive displays.
Availability
LP8860EQVFPRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, central information displays, heads-up displays, smart mirrors, and infotainment backlights requiring stable component supply across extended temperature and long product lifecycles.
Supply support for LP8860EQVFPRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive-grade power management and signal chain solutions.
The LP8860-Q1 product line delivers high-efficiency, low-EMI LED drivers for automotive display backlighting - designed specifically to meet AEC-Q100 Grade 1 requirements and support ASIL-B functional safety architectures.
FAQ
What is the maximum LED string current supported by the LP8860EQVFPRQ1?
The LP8860EQVFPRQ1 supports up to 150mA per channel across its four independent current sinks. This rating is validated over the full −40°C to +125°C ambient operating range with ±3% output current accuracy and 0.5% typical matching between channels - ensuring consistent luminance in multi-string automotive displays.
Does the LP8860EQVFPRQ1 support synchronization with external display timing signals?
Yes, the LP8860EQVFPRQ1 supports external synchronization via its VSYNC pin, allowing PWM generation to align precisely with display refresh cycles. This feature is essential for eliminating visual artifacts in high-refresh-rate instrument clusters and central information displays using the LP8860EQVFPRQ1 in display mode.
How does the LP8860EQVFPRQ1 reduce electromagnetic interference in automotive systems?
The LP8860EQVFPRQ1 reduces EMI through multiple integrated techniques: programmable boost switching frequency (100kHz–2.2MHz) to avoid AM band, spread-spectrum modulation, external SYNC input for system-level clock alignment, and phase-shifted PWM across its four LED outputs - collectively lowering peak spectral energy and conducted noise.
Can the LP8860EQVFPRQ1 operate without a microcontroller interface?
Yes, the LP8860EQVFPRQ1 supports standalone operation using only four hardware signals: VDDIO/EN (enable), PWM (brightness control), FAULT (status), and NSS (fault reset). This allows integration into cost-sensitive or legacy automotive systems without I²C or SPI host controllers - while retaining full fault protection and thermal management.
What thermal protection mechanisms does the LP8860EQVFPRQ1 implement?
The LP8860EQVFPRQ1 implements dual-layer thermal protection: internal junction thermal shutdown at 165°C (with 30°C hysteresis) and external temperature sensing via the TSENSE pin. When paired with an NTC thermistor, the LP8860EQVFPRQ1 automatically reduces LED current to maintain safe operating temperature - critical for enclosed HUD and cluster modules.
LP8860EQVFPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-PowerLQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Controller
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 48V
- Voltage - Output:
- 48V
- Current - Output / Channel:
- 150mA
- Frequency:
- 100kHz ~ 2.2MHz
- Dimming:
- PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-HLQFP (7x7)
LP8860EQVFPRQ1 FAQ
1.How can I place an order for LP8860EQVFPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8860EQVFPRQ1 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 LP8860EQVFPRQ1 reliable?
The price and inventory of LP8860EQVFPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8860EQVFPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8860EQVFPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8860EQVFPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8860EQVFPRQ1?
LP8860EQVFPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8860EQVFPRQ1 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 LP8860EQVFPRQ1?
For technical support, including LP8860EQVFPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8860EQVFPRQ1 requirements.
6.How does Aetrix verify that LP8860EQVFPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8860EQVFPRQ1 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 LP8860EQVFPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8860EQVFPRQ1?
All LP8860EQVFPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8860EQVFPRQ1, 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 LP8860EQVFPRQ1 part is unused and in its original packaging.
Return procedure for LP8860EQVFPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP8860EQVFPRQ1 Tags
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