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Texas Instruments LP8860JQVFPRQ1
- Part No.:
- LP8860JQVFPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerLQFP
- Datasheet:
-
LP8860JQVFPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 32HLQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LP8860JQVFPRQ1 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, 16-bit SPI/I²C dimming control, and hybrid PWM/current dimming for high optical efficiency in LCD backlight systems.
For engineers reviewing the LP8860JQVFPRQ1 datasheet, LP8860JQVFPRQ1 pinout, LP8860JQVFPRQ1 application, or LP8860JQVFPRQ1 equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, automotive-grade thermal and fault diagnostics, and two confirmed alternative parts with documented functional trade-offs.
Technical Context
The LP8860JQVFPRQ1 integrates a programmable-frequency (100kHz–2.2MHz) boost converter with adaptive output voltage control-dynamically adjusting VBOOST to match LED string headroom-and spread-spectrum EMI reduction. Its four independent current sinks support phase-shifted PWM (PSPWM) to reduce peak output ripple and audible noise.
It supports dual control architectures: standalone operation via PWM/EN/FAULT/NSS signals, or full configurability via SPI or I²C-including display mode (global dimming, slope control, synchronization) and cluster mode (independent per-channel dimming), with external temperature sensing for LED current derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 48V - supports direct connection to automotive battery (cold-crank to load-dump conditions) without pre-regulation |
| LED Channel Count & Max Current | 4 channels × 150mA - enables driving medium-size LCD backlights (e.g., 8-LED strings × 4 channels) |
| Dimming Resolution | 16-bit via SPI/I²C - provides >65,000-step brightness control for smooth grayscale transitions in infotainment displays |
| Current Matching (typ.) | 0.5% - ensures uniform luminance across multiple LED strings without manual calibration |
| Boost Switching Frequency | 100kHz to 2.2MHz - allows AM-band avoidance (e.g., 1.8MHz) or high-efficiency low-frequency operation (e.g., 303kHz) |
| Thermal Shutdown Threshold | 150°C to 165°C (typ.) - protects against sustained overloads in sealed instrument cluster enclosures |
| Ambient Operating Range | −40°C to +125°C - qualified for under-hood and dashboard mounting per AEC-Q100 Grade 1 |
Pinout & Package
LP8860JQVFPRQ1 is housed in a 32-pin HLQFP (7.00mm × 7.00mm) package with exposed thermal pad (PowerPAD™), optimized for automotive thermal cycling and board-level reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | LED current sink outputs | Drive up to 150mA each into LED anodes; support phase-shifted PWM to reduce boost output ripple and ceramic capacitor audible noise |
| VDDIO/EN | Enable & digital I/O reference | Active-high enable with 1.65V–5.5V logic threshold; sets voltage level for all digital interface pins (SPI/I²C) |
| SCLK/SCL, MOSI/SDA, MISO, NSS | Configurable serial interface | Supports both SPI (4-wire) and I²C (2-wire) protocols; NSS doubles as fault reset in I²C/standalone mode |
| SYNC, VSYNC | Timing synchronization inputs | SYNC aligns boost switching to external clock; VSYNC synchronizes LED PWM to display refresh rate (e.g., 60Hz) to eliminate flicker |
| FAULT | Open-drain fault indicator | Asserts low on overtemperature, LED open/short, boost OVP/UVP, or VIN overcurrent - enables system-level safety monitoring |
| TSENSE | External NTC temperature sense input | Connects to thermistor to automatically reduce LED current above preset junction temperature - extends LED lifetime in hot environments |
| SD | Power-line FET control | Drives external p-FET to limit inrush current during power-up and cut off standby leakage - reduces quiescent current to <5μA |
Key Features
| Feature | Design Value |
|---|---|
| Hybrid PWM + current dimming | Reduces EMI emissions by >10dB vs. pure PWM; improves LED lifetime and total optical efficiency by minimizing thermal stress |
| Adaptive boost voltage control | Monitors LED headroom in real time and adjusts VBOOST to minimum required level - cuts power loss up to 30% at partial brightness |
| Phase-shifted PWM (PSPWM) | Staggers ON-times across four channels - lowers peak boost current by ~75%, enabling smaller output capacitors and eliminating audible ceramic capacitor noise |
| Extensive fault diagnostics | Detects and reports LED open/short, boost OVP/UVP, VIN overcurrent, thermal shutdown, and communication errors - supports ASIL-B functional safety compliance |
| Spread-spectrum boost switching | Modulates switching frequency ±7% - spreads EMI energy across bandwidth, easing EMC filter design and passing CISPR-25 Class 5 |
Applications
| Automotive Infotainment Display | Instrument Cluster Backlight |
|---|---|
Use Scenario: Driving 4×8-LED strings behind a 10.25-inch TFT LCD in a vehicle center stack with dynamic contrast and ambient light adaptation. IC Role / Device Role / Timing Role: LED driver with synchronized VSYNC input to lock PWM timing to display frame rate (60Hz), preventing visible flicker during video playback. Use Value: 16-bit dimming resolution enables seamless brightness ramping across 1000+ nits; PSPWM eliminates audible noise from ceramic boost caps in quiet cabin environments. |
Use Scenario: Powering segmented LED backlight for analog/digital gauge clusters with variable brightness zones (e.g., speedometer vs. fuel gauge). IC Role / Device Role / Timing Role: Four independent current sinks configured in cluster mode - each channel dimmed separately via SPI to match local lighting requirements. Use Value: 0.5% current matching ensures consistent color and intensity across all segments; TSENSE input derates current during prolonged sun exposure to prevent LED thermal runaway. |
| Smart Mirror Illumination | Heads-Up Display (HUD) Backlight |
Use Scenario: Illuminating electrochromic rearview mirror with edge-lit LED array requiring uniform brightness and low EMI near RF receivers. IC Role / Device Role / Timing Role: Standalone operation using PWM input and FAULT feedback - no microcontroller needed; spread-spectrum boost minimizes interference with Bluetooth/WiFi antennas. Use Value: 3V–48V input range accommodates stop-start battery transients; SD pin controls external FET to achieve <10μA system standby current. |
Use Scenario: Driving high-brightness LED strings in compact HUD projector module where thermal density and EMI are critical constraints. IC Role / Device Role / Timing Role: Boost controller with 2.2MHz switching and adaptive voltage control - enables ultra-small magnetics and ceramic output caps while maintaining >85% efficiency at 150mA/channel. Use Value: Thermal shutdown at 165°C (typ.) prevents damage during extended operation in confined HUD housing; ISET pin allows factory-trimmed max current for binning consistency. |
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 | Lower channel count; suited for simpler clusters or single-zone backlights; lacks display-mode features like VSYNC sync and slope control | Select when cost-sensitive designs require only two LED strings and do not need full display timing control or hybrid dimming. |
| TPS61194-Q1 | 4-channel, 100mA/channel, no boost controller, requires external DC/DC | Lower max current per channel; designed for systems with pre-regulated 5V/12V rail; lacks adaptive boost and spread-spectrum EMI reduction | Choose when board space permits separate boost stage and lower LED current suffices - e.g., small-format smart mirrors or auxiliary indicators. |
Compared with LP8860JQVFPRQ1, LP8862-Q1 trades channel count and interface flexibility for lower BOM cost and SEPIC capability, while TPS61194-Q1 shifts boost complexity off-chip but limits peak brightness and EMI performance - making LP8860JQVFPRQ1 optimal for high-fidelity, thermally constrained automotive displays requiring integrated power and precise timing.
Availability
LP8860JQVFPRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, instrument cluster backlighting, smart mirror illumination, and heads-up display (HUD) applications requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for LP8860JQVFPRQ1 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, embedded processing, and automotive-grade power management solutions, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.
The LP8860JQVFPRQ1 belongs to TI's automotive LED driver product line, engineered specifically for high-reliability LCD backlight systems in infotainment, instrumentation, and ADAS displays - emphasizing EMI robustness, thermal resilience, and display-timing precision.
FAQ
What is the maximum LED string voltage supported by LP8860JQVFPRQ1?
The LP8860JQVFPRQ1 boost converter supports output voltages up to 48V, enabling it to drive up to 14 white LEDs in series (assuming 3.4V forward voltage per LED at 150mA). Its adaptive voltage control dynamically adjusts the boost output to match actual LED string headroom - minimizing power loss and heat generation across varying brightness and temperature conditions. This capability is fully implemented in the LP8860JQVFPRQ1 device.
Does LP8860JQVFPRQ1 support both SPI and I²C interfaces simultaneously?
No - the LP8860JQVFPRQ1 uses a hardware-selectable interface: the IF pin determines protocol mode (low = I²C/standalone, high = SPI). It does not support concurrent SPI and I²C operation. However, both protocols provide full register access for configuration, fault reading, and dimming control. The LP8860JQVFPRQ1 datasheet specifies identical timing and electrical characteristics for both modes, ensuring consistent reliability in either implementation.
How does the LP8860JQVFPRQ1 handle thermal protection in automotive environments?
The LP8860JQVFPRQ1 integrates a junction temperature sensor with thermal shutdown activation at 150°C to 165°C (typical) and hysteresis of 30°C. When triggered, it disables all LED outputs and boost switching until junction temperature falls below ~135°C. Additionally, the TSENSE pin supports external NTC thermistors for proactive LED current derating - allowing system-level thermal management before reaching shutdown thresholds. This dual-layer protection is validated per AEC-Q100 Grade 1 for continuous operation in 125°C ambient environments. The LP8860JQVFPRQ1 implements both mechanisms.
Can LP8860JQVFPRQ1 drive more than 150mA per channel by paralleling outputs?
Yes - the LP8860JQVFPRQ1 allows paralleling of OUT1–OUT4 outputs (e.g., OUT1+OUT2) to deliver up to 300mA on a single string, provided external current-sharing resistors or matched PCB traces are used. However, current matching degrades slightly (from 0.5% to ≤2% typical) when paralleling, and thermal derating must be applied due to increased power dissipation in the HLQFP package. This configuration is documented in TI's LP8860-Q1 application notes and supported in the LP8860JQVFPRQ1 silicon revision.
What fault conditions does LP8860JQVFPRQ1 detect and report via the FAULT pin?
The LP8860JQVFPRQ1 asserts the open-drain FAULT pin low for seven distinct conditions: LED open circuit, LED short-to-ground, boost output overvoltage (OVP), boost input undervoltage (UVLO), VIN overcurrent (OCP), junction overtemperature (thermal shutdown), and I²C/SPI communication error (NACK or timeout). Each fault type can be individually masked or latched via configuration registers. Fault status is readable through the FAULT register - a core diagnostic feature implemented in every LP8860JQVFPRQ1 unit.
LP8860JQVFPRQ1 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)
LP8860JQVFPRQ1 FAQ
1.How can I place an order for LP8860JQVFPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8860JQVFPRQ1 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 LP8860JQVFPRQ1 reliable?
The price and inventory of LP8860JQVFPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8860JQVFPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8860JQVFPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8860JQVFPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8860JQVFPRQ1?
LP8860JQVFPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8860JQVFPRQ1 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 LP8860JQVFPRQ1?
For technical support, including LP8860JQVFPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8860JQVFPRQ1 requirements.
6.How does Aetrix verify that LP8860JQVFPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8860JQVFPRQ1 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 LP8860JQVFPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8860JQVFPRQ1?
All LP8860JQVFPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8860JQVFPRQ1, 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 LP8860JQVFPRQ1 part is unused and in its original packaging.
Return procedure for LP8860JQVFPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP8860JQVFPRQ1 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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