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Texas Instruments LP8860LQVFPRQ1
- Part No.:
- LP8860LQVFPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerLQFP
- Datasheet:
-
LP8860LQVFPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 32HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,207
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Product details
Overview
LP8860LQVFPRQ1 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 via external PWM or 16-bit SPI/I²C control - used in instrument cluster and infotainment LCD backlighting.
For engineers reviewing the LP8860LQVFPRQ1 datasheet, LP8860LQVFPRQ1 pinout, LP8860LQVFPRQ1 application, or LP8860LQVFPRQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed thermal and electrical specs, real-world automotive use cases, and two rigorously cross-checked alternative parts for backlight system design.
Technical Context
The LP8860LQVFPRQ1 integrates a programmable-frequency (100kHz–2.2MHz) boost converter with adaptive output voltage control that dynamically tracks LED string headroom to minimize power loss. Its four independent current sinks support phase-shifted PWM to reduce audible noise and boost output ripple.
It implements dual-dimming architecture: hardware PWM input for fast response and 16-bit digital control via SPI or I²C for precise brightness management in display mode (global dimming) or cluster mode (independent per-channel dimming), with built-in fault diagnostics including LED short/open, thermal shutdown, and VIN OVP/UVP.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 48V - supports wide automotive battery transients including cold-crank (3V) and load-dump (48V). |
| LED Current per Channel | Up to 150mA - enables driving high-brightness LED strings typical in 7–12″ automotive displays. |
| Current Matching | 0.5% typical - ensures uniform luminance across multiple LED strings without manual calibration. |
| Dimming Resolution | 16-bit SPI/I²C or >13,000:1 external PWM - provides smooth, flicker-free brightness transitions for HUD and CID applications. |
| Boost Switching Frequency | 100kHz to 2.2MHz with spread-spectrum - avoids AM radio band (530–1710kHz) and reduces EMI in EMC-sensitive vehicle cabins. |
| Operating Temperature | −40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and dashboard mounting. |
| Thermal Shutdown | 165°C typical with 30°C hysteresis - protects against sustained overloads while enabling safe recovery in transient thermal events. |
Pinout & Package
LP8860LQVFPRQ1 is housed in a 32-pin HLQFP (7.00mm × 7.00mm) package with exposed thermal pad (PowerPAD™) for enhanced heat dissipation in automotive environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | LED current sink outputs | Four independent, high-precision (±3% accuracy, 0.5% matching) current sources for driving LED strings. |
| VDD, VDDIO/EN | Supply and enable inputs | VDD powers internal circuitry (3–5.5V); VDDIO/EN sets logic reference and enables device (1.65–VDDV). |
| PWM, SCLK/SCL, MOSI/SDA, MISO, NSS | Digital interface pins | Supports standalone PWM dimming or full configuration via SPI/I²C - IF pin selects protocol mode. |
| SYNC, VSYNC | Timing synchronization inputs | SYNC aligns boost switching to external clock; VSYNC synchronizes LED PWM to display refresh rate. |
| FAULT, SQW | Diagnostic and auxiliary outputs | Open-drain FAULT signals faults (short/open, thermal, OVP); SQW provides square-wave clock for auxiliary rails. |
| ISENSE, GD, FB, SD | Boost control and protection | ISENSE/GD drive external FET; FB regulates boost output; SD controls power-line FET for inrush/standby control. |
| TSENSE, ISET, FILTER | Configurable analog inputs | TSENSE connects NTC for temperature-based current derating; ISET sets max current; FILTER configures PLL bandwidth. |
Key Features
| Feature | Design Value |
|---|---|
| Hybrid PWM + current dimming | Reduces EMI and extends LED lifetime by minimizing high-frequency switching stress while maintaining optical efficiency. |
| Phase-shifted PWM (PSPWM) | Staggers channel activation to cut peak boost current by up to 75%, lowering output capacitor size and eliminating ceramic capacitor squeal. |
| Adaptive boost voltage control | Monitors LED headroom in real time and adjusts boost output to minimum required level - improves system efficiency by 5–12% vs fixed-voltage boost. |
| Extensive fault coverage | Detects and reports LED open/short, thermal overload, VIN OVP/UVP, boost overcurrent, and temperature sensor disconnect - enables fail-safe system response. |
| Programmable spread-spectrum | Modulates switching frequency to disperse EMI energy across a band - simplifies compliance with CISPR 25 Class 5 radiated emissions limits. |
Applications
| Automotive Instrument Clusters | Infotainment Display Backlight |
|---|---|
Use Scenario: High-reliability backlight for TFT-LCD gauges with variable ambient light and wide temperature operation. IC Role / Device Role / Timing Role: LED driver with adaptive boost and phase-shifted PWM to maintain uniform brightness across speed/tach/RPM zones while suppressing audible noise. Use Value: Enables crisp, glare-free readability at −40°C startup and +85°C cabin temperatures with <1% luminance drift across channels. |
Use Scenario: Dynamic backlight for central information displays requiring smooth dimming during navigation or media playback. IC Role / Device Role / Timing Role: Four-channel current sink with 16-bit SPI control and brightness slope programming for seamless UI transitions. Use Value: Delivers flicker-free dimming with <50ms response time and eliminates visible stepping during video content playback. |
| Heads-Up Display (HUD) | Smart Mirror Backlight |
Use Scenario: Compact, low-EMI backlight for projection-based HUDs where EMI must not interfere with ADAS radar or camera signals. IC Role / Device Role / Timing Role: Boost controller with spread-spectrum and AM-band avoidance, synchronized to display timing via VSYNC. Use Value: Meets CISPR 25 Class 5 radiated emissions without shielding, reducing BOM cost and board area. |
Use Scenario: Dual-zone backlight for electrochromic smart mirrors requiring independent top/bottom brightness control. IC Role / Device Role / Timing Role: Cluster mode operation with independent dimming per OUT1–OUT2 (top) and OUT3–OUT4 (bottom) channels. Use Value: Achieves 20:1 contrast ratio between mirror zones while sharing single boost stage - cuts component count by 30% vs dual-driver solution. |
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 | Suitable for simpler, lower-channel-count backlight systems without digital configurability | Select when only two LED strings are needed and AM-band EMI mitigation is less critical than cost reduction. |
| TPS61194-Q1 | 4-channel, 100mA/channel, no boost sync or spread-spectrum, fixed 1.2MHz switching | Targeted at compact AVN displays with tight layout constraints but relaxed EMI requirements | Choose for space-constrained designs where 100mA/channel suffices and thermal derating margins exceed 25%. |
Compared with LP8860LQVFPRQ1, LP8862-Q1 reduces channel count and communication flexibility but adds SEPIC capability for wider input regulation; TPS61194-Q1 trades dimming resolution and EMI features for smaller footprint and lower quiescent current - both require revalidation of thermal and optical performance in existing layouts.
Availability
LP8860LQVFPRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, infotainment displays, and heads-up displays requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for LP8860LQVFPRQ1 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 lighting solutions.
The LP8860LQVFPRQ1 belongs to TI's automotive LED driver product line, engineered specifically for high-reliability, low-EMI LCD backlighting in safety-critical vehicle interfaces such as instrument clusters and HUDs.
FAQ
What is the maximum LED string current supported by the LP8860LQVFPRQ1?
The LP8860LQVFPRQ1 supports up to 150mA per channel across its four independent current sinks. This rating is validated over the full AEC-Q100 Grade 1 temperature range (−40°C to +125°C ambient) with ≤3% output current accuracy and 0.5% typical matching between channels - enabling uniform illumination in multi-string automotive displays.
Does the LP8860LQVFPRQ1 support synchronization with external display timing signals?
Yes, the LP8860LQVFPRQ1 supports external synchronization via its VSYNC pin, which aligns LED PWM generation to display refresh cycles. This prevents visual artifacts like rolling bars or tearing in instrument clusters and infotainment systems - a feature confirmed in TI's LP8860-Q1 datasheet Section 6.1.3 and functional block diagram.
How does the adaptive boost voltage control in the LP8860LQVFPRQ1 improve system efficiency?
The LP8860LQVFPRQ1 monitors LED string headroom voltage in real time and dynamically adjusts its boost output to the minimum level required - typically 1–2V above the highest string forward voltage. This reduces power loss in the boost stage by 5–12% compared to fixed-output designs, directly improving thermal performance and extending LED lifetime in confined automotive enclosures.
Can the LP8860LQVFPRQ1 operate without an external microcontroller?
Yes, the LP8860LQVFPRQ1 supports standalone operation using four dedicated pins: VDDIO/EN for enable, PWM for brightness control, FAULT for status indication, and NSS for fault reset. This allows basic functionality without SPI/I²C firmware - verified in Section 6.1 of the official datasheet and used in cost-sensitive cluster modules.
What thermal management features does the LP8860LQVFPRQ1 include?
The LP8860LQVFPRQ1 integrates thermal shutdown at 165°C (typical) with 30°C hysteresis, junction-to-ambient thermal resistance of 36.0°C/W in HLQFP PowerPAD™ package, and automatic LED current reduction via external NTC on the TSENSE pin. These features collectively prevent thermal runaway during sustained high-brightness operation in sealed dashboard environments.
LP8860LQVFPRQ1 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)
LP8860LQVFPRQ1 FAQ
1.How can I place an order for LP8860LQVFPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8860LQVFPRQ1 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 LP8860LQVFPRQ1 reliable?
The price and inventory of LP8860LQVFPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8860LQVFPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8860LQVFPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8860LQVFPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8860LQVFPRQ1?
LP8860LQVFPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8860LQVFPRQ1 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 LP8860LQVFPRQ1?
For technical support, including LP8860LQVFPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8860LQVFPRQ1 requirements.
6.How does Aetrix verify that LP8860LQVFPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8860LQVFPRQ1 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 LP8860LQVFPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8860LQVFPRQ1?
All LP8860LQVFPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8860LQVFPRQ1, 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 LP8860LQVFPRQ1 part is unused and in its original packaging.
Return procedure for LP8860LQVFPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP8860LQVFPRQ1 Tags
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