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Texas Instruments LP8860AQVFPRQ1
- Part No.:
- LP8860AQVFPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerLQFP
- Datasheet:
-
LP8860AQVFPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 32HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,864
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Product details
Overview
LP8860AQVFPRQ1 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. It serves as the primary backlight driver in instrument clusters and infotainment displays requiring low-EMI operation and thermal-aware LED current regulation.
For engineers reviewing the LP8860AQVFPRQ1 datasheet, LP8860AQVFPRQ1 pinout, LP8860AQVFPRQ1 application, or LP8860AQVFPRQ1 equivalent, this page delivers verified technical context-including adaptive boost voltage control, 16-bit SPI/I²C dimming, phase-shifted PWM for ripple reduction, and external temperature sensor integration-essential for automotive display power architecture validation.
Technical Context
The LP8860AQVFPRQ1 integrates a programmable 100kHz–2.2MHz boost converter with spread-spectrum EMI reduction and adaptive output voltage control that dynamically tracks LED string headroom to minimize power loss. Its four independent current sinks support both global (display) and per-channel (cluster) dimming modes via SPI or I²C registers.
Phase-shifted PWM generation across all four outputs reduces peak boost current and audible ceramic capacitor noise, while built-in fault diagnostics-including LED short/open detection, thermal shutdown (150°C/165°C), and VIN OVP/UVP-enable robust system-level safety compliance per ISO 26262 ASIL-B requirements.
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 (40V+) transients. |
| LED Channel Current | Up to 150mA per channel - enables driving high-brightness LED strings (e.g., 8× white LEDs @ 3.2V) without external current amplification. |
| Current Matching | 0.5% typical - ensures uniform luminance across multiple display zones or instrument cluster segments. |
| Dimming Resolution | 16-bit via SPI/I²C - provides fine-grained brightness control for smooth UI transitions and glare-free night-mode operation. |
| Boost Switching Frequency | 100kHz to 2.2MHz - allows AM-band avoidance (e.g., 1.8MHz) and compact magnetics selection for space-constrained HUD modules. |
| Thermal Shutdown Threshold | 150°C (engage), 135°C (release) - protects against sustained overtemperature in sealed dashboard enclosures. |
| Ambient Operating Range | −40°C to +125°C - qualified for under-hood and center-stack mounting per AEC-Q100 Grade 1. |
Pinout & Package
LP8860AQVFPRQ1 uses the HLQFP-32 (VFP) package: 7.00mm × 7.00mm body with exposed thermal pad (PowerPAD™). Pin count is 32, with dedicated analog, digital, power, ground, and open-drain fault signaling terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | LED current sink outputs | Four independent, matched 150mA constant-current sources for parallel or segmented backlight strings. |
| VDD, VDDIO/EN | Internal logic & interface supply / enable input | VDD powers core circuitry (3–5.5V); VDDIO/EN sets digital I/O voltage level and enables device operation. |
| PWM, SCLK/SCL, MOSI/SDA, MISO, NSS, IF | Digital control interface pins | Supports standalone PWM dimming or full configuration via SPI (IF=high) or I²C (IF=low) with fault reset on NSS. |
| FAULT | Open-drain fault indicator | Active-low signal asserts on thermal shutdown, LED short/open, VIN OVP/UVP, or boost fault - drives external MCU interrupt. |
| ISENSE, ISENSE_GND, GD, FB, SD | Boost converter control and protection | Enable external FET gate drive (GD), current sensing (ISENSE), feedback regulation (FB), and power-line FET control (SD) for inrush limiting. |
| TSENSE, VSENSE_P/N, FILTER | Analog monitoring and filtering | TSENSE connects NTC for automatic LED current derating; VSENSE_P/N monitor input rail; FILTER sets PLL bandwidth for synchronization stability. |
Key Features
| Feature | Design Value |
|---|---|
| Hybrid PWM + current dimming | Reduces EMI by >10dB and extends LED lifetime vs. pure PWM, while maintaining >13,000:1 effective dimming ratio. |
| Adaptive boost voltage control | Minimizes power loss by dynamically adjusting VBOOST to just above LED string forward voltage - improves system efficiency up to 95% at mid-brightness. |
| Phase-shifted PWM (PSPWM) | Staggers ON-times across four channels to cut peak boost current by 75%, enabling smaller output capacitors and eliminating audible ceramic capacitor noise. |
| External temperature compensation | Uses TSENSE pin with NTC thermistor to reduce LED current linearly above 85°C - prevents thermal runaway in enclosed HUD assemblies. |
| Comprehensive fault reporting | Separate flags for LED short (VSHORT_FAULT_THR = 3.6–10.6V), open, thermal, VIN OVP/UVP, and boost overcurrent - simplifies diagnostic logging in AUTOSAR-compliant ECUs. |
Applications
| Automotive Instrument Clusters | Central Information Displays (CID) |
|---|---|
Use Scenario: High-reliability backlight for TFT-LCD gauges with variable ambient lighting and ASIL-B functional safety requirements. IC Role / Device Role / Timing Role: Primary LED driver providing synchronized, phase-shifted PWM to four independent LED zones with real-time thermal derating. Use Value: Enables consistent color gamut and contrast across −40°C to +125°C ambient while meeting CISPR-25 Class 5 EMI limits without shielding. |
Use Scenario: Brightness-adaptive backlight for 10.25″+ touch-enabled infotainment displays in varying daylight conditions. IC Role / Device Role / Timing Role: System-level backlight controller interfacing with MCU via I²C to execute dynamic dimming profiles based on ambient light sensor input. Use Value: Delivers 16-bit dimming resolution and <1ms response time for seamless transition between navigation, media, and phone UI states. |
| Heads-Up Displays (HUD) | Smart Mirrors |
Use Scenario: Compact, low-noise LED driver for projection-based HUDs where mechanical vibration and acoustic noise must be minimized. IC Role / Device Role / Timing Role: Precision current source with PSPWM and spread-spectrum boost to eliminate resonant frequencies in optical path components. Use Value: Reduces boost output ripple to <50mV p-p at full brightness, preventing image jitter and eliminating audible coil whine during vehicle acceleration. |
Use Scenario: Dual-zone backlight for electrochromic smart mirrors with separate interior/exterior illumination control. IC Role / Device Role / Timing Role: Configurable dual-mode driver operating in cluster mode (independent dimming per zone) and display mode (global sync for anti-glare). Use Value: Supports simultaneous 100% and 5% brightness levels across zones using single IC - eliminates need for two discrete drivers and saves PCB area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP8862AQVFPRQ1 | 2-channel, 160mA/channel, no I²C/SPI, supports SEPIC topology | Targeted at simpler, cost-sensitive clusters with fewer LED zones; lacks display-mode features and thermal sensing | Choose when only two LED strings are needed and serial configuration is unnecessary. |
| TPS61194QPWPRQ1 | 4-channel, 100mA/channel, 4.5V–45V input, no boost frequency programming or spread spectrum | Suitable for lower-power CID backlights; missing adaptive voltage control and phase-shifted PWM | Select for legacy designs requiring pin-compatible upgrade from TPS61193/194 family with minimal layout change. |
Compared with LP8860AQVFPRQ1, LP8862AQVFPRQ1 reduces channel count and communication flexibility but adds SEPIC capability for buck-boost flexibility, while TPS61194QPWPRQ1 trades dimming resolution and EMI performance for broader input compatibility and simplified register map.
Availability
LP8860AQVFPRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, heads-up displays, central information displays, and smart mirror backlight systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.
Supply support for LP8860AQVFPRQ1 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 designed specifically for high-reliability automotive LCD backlighting, emphasizing EMI reduction, thermal resilience, and functional safety compliance in demanding cockpit environments.
FAQ
What is the maximum LED string voltage supported by the LP8860AQVFPRQ1?
The LP8860AQVFPRQ1 boost converter supports output voltages up to 48V, enabling driving of up to 14 white LEDs (3.4V each) in series per channel. The adaptive voltage control continuously adjusts the boost output to match the minimum required headroom, reducing power loss and heat generation in the LP8860AQVFPRQ1 itself.
Does the LP8860AQVFPRQ1 support both SPI and I²C interfaces simultaneously?
No - the LP8860AQVFPRQ1 uses the IF pin to select interface mode: high for SPI (MOSI/SDA, MISO, SCLK/SCL, NSS), low for I²C (MOSI/SDA as SDA, SCLK/SCL as SCL, NSS as fault reset). Both protocols share the same physical pins but operate exclusively; simultaneous use is not supported in the LP8860AQVFPRQ1.
How does the LP8860AQVFPRQ1 implement thermal protection for LED current regulation?
The LP8860AQVFPRQ1 monitors external temperature via the TSENSE pin connected to an NTC thermistor. When temperature exceeds user-defined thresholds (programmable via EEPROM), it automatically reduces LED current per channel to prevent thermal runaway - a critical feature for LP8860AQVFPRQ1 deployments in sealed HUD or cluster housings.
Can the LP8860AQVFPRQ1 drive more than four LED strings?
Yes - the LP8860AQVFPRQ1's four current sinks can be paralleled (e.g., OUT1+OUT2) to deliver up to 300mA per combined string, or used with external current-mirror circuits to scale channel count. However, per-string current remains capped at 150mA, and matching degrades slightly when paralleling outputs in the LP8860AQVFPRQ1.
What fault conditions trigger the FAULT pin on the LP8860AQVFPRQ1?
The FAULT pin on the LP8860AQVFPRQ1 asserts low for thermal shutdown (TJ ≥ 165°C), LED short/open detection (via VSHORT_FAULT_THR thresholds), VIN overvoltage/undervoltage, boost overcurrent, and internal register checksum errors. Each fault type is latched and readable via SPI/I²C status registers in the LP8860AQVFPRQ1.
LP8860AQVFPRQ1 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)
LP8860AQVFPRQ1 FAQ
1.How can I place an order for LP8860AQVFPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8860AQVFPRQ1 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 LP8860AQVFPRQ1 reliable?
The price and inventory of LP8860AQVFPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8860AQVFPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8860AQVFPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8860AQVFPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8860AQVFPRQ1?
LP8860AQVFPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8860AQVFPRQ1 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 LP8860AQVFPRQ1?
For technical support, including LP8860AQVFPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8860AQVFPRQ1 requirements.
6.How does Aetrix verify that LP8860AQVFPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8860AQVFPRQ1 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 LP8860AQVFPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8860AQVFPRQ1?
All LP8860AQVFPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8860AQVFPRQ1, 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 LP8860AQVFPRQ1 part is unused and in its original packaging.
Return procedure for LP8860AQVFPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP8860AQVFPRQ1 Tags
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