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Texas Instruments LP8860DQVFPRQ1
- Part No.:
- LP8860DQVFPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerLQFP
- Datasheet:
-
LP8860DQVFPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 32HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
LP8860DQVFPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED driver IC with integrated boost controller, four 150mA high-precision current sinks, 3V–48V input range, 0.5% typical current matching, and 16-bit SPI/I²C dimming control. It serves as the primary backlight power and brightness management IC in LCD-based automotive displays.
For engineers reviewing the LP8860DQVFPRQ1 datasheet, LP8860DQVFPRQ1 pinout, LP8860DQVFPRQ1 application, or LP8860DQVFPRQ1 equivalent, key selection criteria include adaptive boost voltage control, hybrid PWM/current dimming for EMI reduction, thermal fault response with external NTC, and display-mode phase-shift PWM for ripple suppression in infotainment and instrument cluster designs.
Technical Context
The LP8860DQVFPRQ1 implements a digitally programmable boost converter with adaptive output voltage regulation-sampling headroom across all four LED current sinks to dynamically minimize VOUT while maintaining compliance. Its switching frequency is configurable from 100kHz to 2.2MHz with spread-spectrum option and external SYNC input for EMI-sensitive automotive environments.
It supports dual operational modes: Display Mode (full feature set including phase-shift PWM, brightness sloping, and adaptive headroom) and Cluster Mode (simplified independent dimming). Control is implemented via standalone PWM/EN/FAULT/NSS interface or full-featured SPI/I²C with register-mapped diagnostics, current correction, and temperature-based current derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 48V - supports direct connection to automotive battery rail including cold-crank (4.5V) and load-dump (42V) transients. |
| LED Channel Count & Max Current | 4 channels × 150mA - enables driving up to four independent LED strings (e.g., top/bottom/left/right zones in CID or HUD). |
| Current Matching Accuracy | 0.5% typical - ensures uniform luminance across display zones without manual calibration or external trimming. |
| Dimming Resolution | 16-bit via SPI/I²C - delivers >65,000-step linear brightness control for flicker-free grayscale rendering in safety-critical displays. |
| Boost Switching Frequency | 100kHz–2.2MHz with spread spectrum - allows AM-band avoidance and PCB layout optimization for EMI-constrained automotive modules. |
| Thermal Protection | Junction shutdown at 165°C with 30°C hysteresis - prevents thermal runaway during sustained high-brightness operation in sealed enclosures. |
| Ambient Temp Range | −40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and dashboard-mounted display systems. |
Pinout & Package
LP8860DQVFPRQ1 is housed in a 32-pin HLQFP (PowerPAD™) package measuring 7.00mm × 7.00mm with exposed thermal pad (EP) for enhanced heat dissipation in automotive thermal environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | LED current sink outputs | Four independent, matched-current outputs capable of sinking up to 150mA each; configured for display-mode phase-shifted PWM or cluster-mode independent dimming. |
| VDD, VDDIO/EN | Internal logic & I/O supply / Enable input | VDD powers internal circuitry (3–5.5V); VDDIO/EN sets digital I/O voltage level and enables device operation when pulled high. |
| PWM, NSS, FAULT, SYNC, VSYNC | Digital control & status signals | PWM accepts external brightness control; NSS resets faults; FAULT is open-drain fault indicator; SYNC/VSYNC enable system-level timing synchronization. |
| SCLK/SCL, MOSI/SDA, MISO | I²C/SPI interface pins | Configurable dual-interface bus: SCLK/SCL and MOSI/SDA support both protocols; MISO provides readback capability for register verification and diagnostics. |
| ISENSE, GD, FB, SD | Boost controller interface | ISENSE monitors boost inductor current; GD drives external N-channel FET gate; FB regulates boost output; SD controls external power-line p-FET for inrush limiting. |
| TSENSE, ISET, FILTER | Analog configuration inputs | TSENSE connects external NTC for temperature-based LED current reduction; ISET sets max current via resistor; FILTER configures PLL bandwidth for synchronization stability. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Boost Voltage Control | Monitors headroom across all four LED strings and dynamically adjusts boost output to minimum required level-reducing power loss by up to 25% versus fixed-output boost designs. |
| Phase-Shift PWM (PSPWM) | Staggers PWM activation across OUT1–OUT4 with 90° offset-cutting peak boost current by ~50% and suppressing audible ceramic capacitor noise in display assemblies. |
| Hybrid Dimming Architecture | Combines analog current scaling with digital PWM to maintain high optical efficiency (>90%) across full 13,000:1 dimming range while minimizing EMI emissions. |
| Comprehensive Fault Diagnostics | Detects LED open/short, overtemperature, overvoltage, overcurrent, and communication errors-reports via FAULT pin and readable registers for ASIL-B–compatible system monitoring. |
| Automotive Safety Compliance | Fully AEC-Q100 Grade 1 qualified with HBM ±2kV/CDM ±500V ESD rating, thermal shutdown, and built-in watchdog timer-meets functional safety requirements for instrument cluster backlighting. |
Applications
| Automotive Infotainment Display | Instrument Cluster Backlight |
|---|---|
Use Scenario: Driving 8–12 LED strings behind a 10.25" TFT LCD in a central infotainment unit with dynamic local dimming zones. IC Role / Device Role / Timing Role: Primary LED driver IC managing global brightness, zone-specific dimming, and AM-band–compliant boost switching synchronized to display refresh rate via VSYNC. Use Value: Enables seamless UI transitions with 16-bit dimming resolution and phase-shifted PWM that eliminates visible ripple and audible coil whine during navigation map zooming. |
Use Scenario: Powering segmented LED backlight for analog/digital speedometer and tachometer gauges in a digital instrument cluster. IC Role / Device Role / Timing Role: Four-channel current sink delivering matched illumination to discrete gauge segments; operates in Cluster Mode for independent dimming per segment group. Use Value: Ensures consistent color and brightness across mechanical gauge overlays-even under wide ambient temperature swings-via 0.5% current matching and NTC-based thermal derating. |
| Heads-Up Display (HUD) | Smart Rearview Mirror |
Use Scenario: Driving high-brightness green LED arrays in a combiner-based HUD requiring ultra-low EMI to avoid interference with ADAS radar and camera signals. IC Role / Device Role / Timing Role: Low-EMI LED driver with spread-spectrum boost and external clock sync (SYNC pin) to align switching edges with system master clock and suppress narrowband emissions. Use Value: Meets CISPR 25 Class 5 radiated emissions limits without shielding or ferrite beads-reducing BOM cost and board area in space-constrained HUD projector modules. |
Use Scenario: Illuminating electrochromic mirror surface and integrated status LEDs in a smart rearview mirror with auto-dimming and turn-signal indicators. IC Role / Device Role / Timing Role: Dual-role driver: OUT1–OUT2 power mirror backlight; OUT3–OUT4 drive turn-signal LEDs with fast PWM response (<400ns min pulse width) for precise flash timing. Use Value: Eliminates need for separate LED drivers-reducing component count and enabling synchronized fade-in/fade-out between mirror dimming and signal indication using shared SPI control. |
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, supports SEPIC topology | Targeted at simpler, lower-cost clusters with fewer LED zones; lacks display-mode features like PSPWM and brightness sloping | Select when only two independent LED strings are needed and system-level synchronization is not required. |
| TPS61194-Q1 | 4-channel, 100mA/channel, no boost controller, requires external DC/DC | Designed for systems with pre-regulated 5V/12V supply; limited to low-power displays or supplemental lighting where headroom is fixed | Choose when boost conversion is handled upstream and strict thermal constraints limit total LED current per channel to ≤100mA. |
Compared with LP8860DQVFPRQ1, LP8862-Q1 reduces channel count and removes serial interface flexibility but adds SEPIC capability for buck-boost applications; TPS61194-Q1 trades integrated boost and higher per-channel current for smaller footprint and lower quiescent current-making it suitable for auxiliary lighting rather than primary display backlighting.
Availability
LP8860DQVFPRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, instrument cluster backlighting, heads-up displays, smart mirrors, and central information displays requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for LP8860DQVFPRQ1 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 deep expertise in automotive-grade power management and lighting solutions.
The LP8860-Q1 product line was developed specifically for AEC-Q100-compliant automotive LCD backlighting-emphasizing low EMI, thermal resilience, and flexible dimming architectures for next-generation digital cockpits.
FAQ
What is the maximum LED string voltage supported by the LP8860DQVFPRQ1?
The LP8860DQVFPRQ1 boost converter supports output voltages up to 48V, enabling it to drive up to 14–16 white LEDs in series (assuming 3.0–3.3V forward voltage per LED at 150mA). The adaptive voltage control continuously monitors headroom across all four channels and adjusts the boost output to the minimum necessary level-ensuring optimal efficiency without risking LED underdrive.
Does the LP8860DQVFPRQ1 support both I²C and SPI interfaces simultaneously?
No-the LP8860DQVFPRQ1 supports either I²C or SPI, selected via the IF pin (high = SPI, low = I²C or standalone mode). Both protocols share the same physical pins (SCLK/SCL, MOSI/SDA, MISO, NSS), and register maps are identical across interfaces. This design simplifies firmware development while maintaining compatibility with existing I²C- or SPI-based automotive display controllers.
How does the LP8860DQVFPRQ1 implement thermal protection for LED current derating?
The LP8860DQVFPRQ1 uses the TSENSE pin to interface with an external NTC thermistor. When temperature rises, the device reads resistance changes and automatically scales down LED current per channel-configurable via EEPROM registers. This closed-loop thermal management prevents LED lumen depreciation and extends lifetime in sealed automotive enclosures without requiring host MCU intervention.
Can the LP8860DQVFPRQ1 drive more than 150mA per channel by paralleling outputs?
Yes-OUT1–OUT4 can be externally paralleled to increase per-string current capacity. For example, pairing OUT1 and OUT2 yields up to 300mA for high-brightness HUD applications. Current matching remains within 0.5% typical, and the device maintains full diagnostic coverage (open/short detection, thermal monitoring) across combined outputs when configured per TI Application Report SLVA922.
What fault conditions does the LP8860DQVFPRQ1 detect and report?
The LP8860DQVFPRQ1 detects and reports LED open/short circuits, boost overvoltage/overcurrent, thermal shutdown, I²C/SPI communication errors, and external NTC disconnection. All faults assert the open-drain FAULT pin and are individually readable via dedicated status registers-enabling ASIL-B–compliant failure mode analysis and safe state transition in automotive display systems.
LP8860DQVFPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 32-PowerLQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
LP8860DQVFPRQ1 FAQ
1.How can I place an order for LP8860DQVFPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8860DQVFPRQ1 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 LP8860DQVFPRQ1 reliable?
The price and inventory of LP8860DQVFPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8860DQVFPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8860DQVFPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8860DQVFPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8860DQVFPRQ1?
LP8860DQVFPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8860DQVFPRQ1 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 LP8860DQVFPRQ1?
For technical support, including LP8860DQVFPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8860DQVFPRQ1 requirements.
6.How does Aetrix verify that LP8860DQVFPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8860DQVFPRQ1 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 LP8860DQVFPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8860DQVFPRQ1?
All LP8860DQVFPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8860DQVFPRQ1, 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 LP8860DQVFPRQ1 part is unused and in its original packaging.
Return procedure for LP8860DQVFPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP8860DQVFPRQ1 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
Infineon Technologies
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BCR420UE6433HTMA1
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BCR420UE6327HTSA1
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BCR421UE6327HTSA1
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
Microchip Technology
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CL2N8-G
Microchip Technology
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BCR420UW6-7
Diodes Incorporated
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BCR421UW6-7
Diodes Incorporated
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
Diodes Incorporated
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