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Texas Instruments LP8860HQVFPRQ1
- Part No.:
- LP8860HQVFPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerLQFP
- Datasheet:
-
LP8860HQVFPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 32HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,536
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Product details
Overview
LP8860HQVFPRQ1 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, 16-bit SPI/I²C dimming control, and hybrid PWM/current dimming for optical efficiency. It serves as the primary backlight driver in instrument clusters and infotainment displays.
For engineers reviewing the LP8860HQVFPRQ1 datasheet, LP8860HQVFPRQ1 pinout, LP8860HQVFPRQ1 application, or LP8860HQVFPRQ1 equivalent, key selection criteria include its adaptive boost voltage control, 0.5% typical current matching across channels, 13,000:1 external PWM dimming ratio, thermal fault management via TSENSE, and EMI-reduction features including spread-spectrum switching and phase-shift PWM.
Technical Context
The LP8860HQVFPRQ1 integrates a programmable boost converter (100kHz–2.2MHz, spread-spectrum capable) with adaptive output voltage control that monitors headroom across all four LED current sinks to minimize power loss. Its hybrid dimming architecture combines analog current regulation with digital PWM to reduce EMI and extend LED lifetime while maintaining >90% system efficiency at 150mA per string.
It supports dual operational modes: Display Mode (full feature set, phase-shift PWM, global/cluster dimming) and Cluster Mode (simplified configuration). Control is implemented via standalone PWM/EN/FAULT/NSS signals or configurable SPI/I²C interface with register-mapped diagnostics, temperature compensation, and fault reporting including LED short/open, overtemperature, and VIN OVP/UVP.
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 & Current | 4 × 150mA precision current sinks - enables independent driving of four LCD backlight strings with ≤0.5% typical current matching for uniform luminance. |
| Dimming Resolution | 16-bit SPI/I²C control or >13,000:1 external PWM - delivers fine-grained brightness control essential for HDR display compliance. |
| Boost Switching Frequency | 100kHz to 2.2MHz, programmable - allows AM-band avoidance and layout optimization for size vs. efficiency trade-offs. |
| Thermal Protection | 150°C junction shutdown with 30°C hysteresis - ensures safe operation under sustained high-power backlight conditions in sealed enclosures. |
| Ambient Temp Range | −40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and dashboard mounting locations. |
| Interface Support | SPI and I²C dual-mode - provides flexible host MCU integration without requiring dedicated protocol hardware. |
Pinout & Package
LP8860HQVFPRQ1 is housed in a 32-pin HLQFP (7.00mm × 7.00mm) package with exposed thermal pad (PowerPAD™) for enhanced thermal dissipation in automotive environments. The package supports JEDEC-standard reflow and meets IPC/JEDEC J-STD-020 moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | LED current sink outputs | Four independent, high-accuracy constant-current outputs; each drives up to 150mA with <0.75V saturation voltage at full load. |
| VDD, VDDIO/EN | Internal logic & I/O supply / Enable input | VDD powers internal circuitry (3–5.5V); VDDIO/EN sets digital I/O voltage reference and enables device operation when pulled high. |
| PWM, NSS, SYNC, VSYNC | Digital control inputs | PWM accepts external dimming signal; NSS resets faults; SYNC synchronizes boost switching; VSYNC aligns PWM to display refresh rate. |
| FAULT, SQW | Open-drain status outputs | FAULT asserts low on overtemp, LED fault, or VIN anomaly; SQW provides square-wave clock for auxiliary rail generation. |
| ISENSE, FB, GD, SD | Boost converter interface | ISENSE monitors boost inductor current; FB regulates output voltage; GD drives external N-channel FET gate; SD controls external power-line p-FET. |
| TSENSE, ISET, FILTER | Analog configuration terminals | TSENSE connects to NTC for thermal derating; ISET sets max LED current via resistor; FILTER configures PLL bandwidth for synchronization stability. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Boost Voltage Control | Reduces power loss by dynamically adjusting boost output to minimum required headroom across all active LED strings - improves system efficiency by up to 8% versus fixed-output designs. |
| Phase-Shift PWM (PSPWM) | Staggers PWM timing across four outputs to lower peak boost current, cut output ripple by >40%, and eliminate audible ceramic capacitor noise in display modules. |
| Hybrid Dimming Architecture | Combines analog current regulation with digital PWM to maintain color consistency at low brightness while minimizing EMI emissions during PWM transitions. |
| Comprehensive Fault Diagnostics | Real-time detection of LED open/short, thermal runaway, VIN undervoltage/overvoltage, overcurrent, and charge pump faults - reported via FAULT pin and register flags. |
| Automotive-Grade Robustness | Qualified to AEC-Q100 Grade 1, HBM ±2kV/CDM ±500V ESD, and operates reliably across −40°C to +125°C ambient with integrated thermal shutdown and hysteresis. |
Applications
| Automotive Instrument Clusters | Infotainment Display Backlight |
|---|---|
Use Scenario: Driving segmented or TFT LCD backlight in digital gauge clusters with dynamic brightness adaptation across daylight/night conditions. IC Role / Device Role / Timing Role: Primary LED current controller with adaptive boost, synchronized to display frame rate via VSYNC, delivering stable 150mA per string. Use Value: Ensures consistent luminance uniformity (<0.5% channel mismatch) and eliminates flicker through phase-shift PWM aligned to 60Hz refresh. |
Use Scenario: Powering multi-string edge-lit LCD backlights in center-stack infotainment units with variable content-dependent dimming. IC Role / Device Role / Timing Role: Four-channel constant-current source with 16-bit SPI brightness control and thermal derating via external NTC on TSENSE pin. Use Value: Enables local dimming zones and HDR-compatible contrast ratios using hybrid dimming, reducing power consumption by 12% versus pure PWM schemes. |
| Heads-Up Display (HUD) Illumination | Smart Mirror Backlighting |
Use Scenario: Providing high-efficiency, low-noise illumination for combiner-based HUDs where acoustic noise and EMI must be minimized near RF receivers. IC Role / Device Role / Timing Role: Boost-powered LED driver with spread-spectrum switching and phase-shift PWM to suppress conducted/radiated emissions in 500kHz–2MHz band. Use Value: Meets CISPR 25 Class 5 EMI limits without additional filtering, enabling compact PCB layout adjacent to ADAS sensor modules. |
Use Scenario: Controlling dual-zone backlighting in electrochromic smart mirrors used in rear-view and side-view applications. IC Role / Device Role / Timing Role: Dual-mode driver operating in Cluster Mode for simplified control and Display Mode for high-fidelity dimming during camera-assisted auto-dimming sequences. Use Value: Supports seamless transition between ambient-adaptive and glare-reduction modes with <10ms brightness step response via SPI register writes. |
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, cost-sensitive cluster displays with fewer LED strings | Select when only two high-current strings are needed and serial configurability is unnecessary. |
| TPS61194-Q1 | 4-channel, 100mA/channel, no boost controller, requires external DC/DC | Used in space-constrained systems where boost conversion is handled separately | Choose when system already includes a high-voltage DC/DC stage and only LED current regulation is required. |
Compared with LP8860HQVFPRQ1, LP8862-Q1 reduces channel count and removes serial interface but adds SEPIC capability for wider input flexibility, while TPS61194-Q1 trades integrated boost and higher per-channel current for smaller footprint and lower BOM count in pre-regulated architectures.
Availability
LP8860HQVFPRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, infotainment display backlights, and HUD illumination requiring stable component supply across extended production lifecycles.
Supply support for LP8860HQVFPRQ1 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 LP8860HQVFPRQ1 belongs to TI's automotive LED driver product line, engineered specifically for high-reliability, low-EMI backlighting in digital instrument clusters, infotainment systems, and advanced driver-assistance displays.
FAQ
What is the maximum LED string current supported by the LP8860HQVFPRQ1?
The LP8860HQVFPRQ1 supports up to 150mA per channel across its four independent current sinks. This rating is maintained over the full −40°C to +125°C ambient temperature range with ≤0.75V saturation voltage at full load, ensuring stable operation in demanding automotive thermal environments. Each channel can be configured individually via SPI/I²C registers or left unconnected without affecting others.
Does the LP8860HQVFPRQ1 support synchronization to external display timing signals?
Yes, the LP8860HQVFPRQ1 supports external synchronization via the VSYNC pin, which aligns LED PWM generation to the display's vertical refresh rate. This prevents visible rolling artifacts and ensures temporal coherence between pixel updates and backlight modulation - critical for high-resolution automotive displays. Synchronization is active in Display Mode and configurable via register settings.
How does the LP8860HQVFPRQ1 reduce electromagnetic interference (EMI)?
The LP8860HQVFPRQ1 reduces EMI through multiple integrated techniques: programmable spread-spectrum switching, phase-shift PWM across four outputs to lower peak currents, AM-band frequency avoidance (100kHz–2.2MHz range), and synchronous boost operation via the SYNC pin. These features collectively suppress both conducted and radiated emissions without requiring external EMI filters.
Can the LP8860HQVFPRQ1 operate without a microcontroller interface?
Yes, the LP8860HQVFPRQ1 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 mode eliminates MCU dependency for basic backlight functionality while retaining full thermal protection, fault reporting, and adaptive boost control.
What thermal management features does the LP8860HQVFPRQ1 include?
The LP8860HQVFPRQ1 includes junction thermal shutdown at 150°C (with 30°C hysteresis), automatic LED current reduction based on external NTC feedback via the TSENSE pin, and real-time fault reporting through the FAULT pin and SPI/I²C registers. Its HLQFP PowerPAD™ package provides low RθJCbot (1.6°C/W) for efficient heat transfer to the PCB ground plane.
LP8860HQVFPRQ1 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)
LP8860HQVFPRQ1 FAQ
1.How can I place an order for LP8860HQVFPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8860HQVFPRQ1 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 LP8860HQVFPRQ1 reliable?
The price and inventory of LP8860HQVFPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8860HQVFPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8860HQVFPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8860HQVFPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8860HQVFPRQ1?
LP8860HQVFPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8860HQVFPRQ1 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 LP8860HQVFPRQ1?
For technical support, including LP8860HQVFPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8860HQVFPRQ1 requirements.
6.How does Aetrix verify that LP8860HQVFPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8860HQVFPRQ1 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 LP8860HQVFPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8860HQVFPRQ1?
All LP8860HQVFPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8860HQVFPRQ1, 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 LP8860HQVFPRQ1 part is unused and in its original packaging.
Return procedure for LP8860HQVFPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP8860HQVFPRQ1 Tags
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BCR402RE6327HTSA1
Infineon Technologies
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BCR430UXTSA2
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BCR420UE6433HTMA1
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BCR421UE6327HTSA1
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LYT1604D-TL
Power Integrations
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HV9910CLG-G
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CL2N8-G
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BCR420UW6-7
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BCR421UW6-7
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BCR420UFD-7
Diodes Incorporated
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BCR421UFD-7
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