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Texas Instruments LP8860RQVFPRQ1
- Part No.:
- LP8860RQVFPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerLQFP
- Datasheet:
-
LP8860RQVFPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 32HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,035
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Product details
Overview
LP8860RQVFPRQ1 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 driver in instrument clusters and infotainment displays requiring low-EMI operation and thermal-aware LED current regulation.
For engineers reviewing the LP8860RQVFPRQ1 datasheet, LP8860RQVFPRQ1 pinout, LP8860RQVFPRQ1 application, or LP8860RQVFPRQ1 equivalent, key selection criteria include adaptive boost voltage control, hybrid PWM/current dimming support, external temperature sensor interface (TSENSE), fault diagnostics coverage (short/open/thermal), and synchronization capability for display timing alignment.
Technical Context
The LP8860RQVFPRQ1 integrates a programmable-frequency (100kHz–2.2MHz) boost converter with spread-spectrum EMI reduction and adaptive output voltage control based on real-time headroom monitoring of all four LED current sinks. Its dual-mode dimming architecture supports both external PWM input and register-based 16-bit control via SPI or I²C, enabling simultaneous global (display mode) or independent (cluster mode) brightness adjustment.
Phase-shifted PWM generation across OUT1–OUT4 reduces peak boost current and audible ceramic capacitor noise, while the dedicated TSENSE pin enables automatic LED current derating using an external NTC thermistor. Fault reporting includes open/short LED detection, overtemperature shutdown (150°C trip), and VIN/VDD UVLO/OVP protection with configurable thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 48V - supports direct connection to automotive battery rail including cold-crank (3V) and load-dump (48V) transients. |
| LED Channel Current | Up to 150mA per channel - sufficient for driving 4–8 high-brightness LEDs per string in automotive LCD backlights. |
| Current Matching | 0.5% typical - ensures uniform luminance across multiple display zones without visible brightness gradients. |
| Dimming Resolution | 16-bit via SPI/I²C - enables >65,000-step linear brightness control for flicker-free dimming in HUD and CID applications. |
| Boost Switching Frequency | 100kHz to 2.2MHz - allows AM-band avoidance and compact magnetics selection while maintaining >90% system efficiency at 12V input. |
| Thermal Shutdown | 150°C junction trip with 30°C hysteresis - protects against sustained overtemperature in enclosed dashboard environments. |
| Ambient Operating Range | –40°C to +125°C - qualified per AEC-Q100 Grade 1 for under-hood and instrument panel mounting locations. |
Pinout & Package
LP8860RQVFPRQ1 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 PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | LED current sink outputs | Four independent, matched current sources; each drives one LED string up to 150mA with <0.75V saturation voltage at full load. |
| VDD, VDDIO/EN | Supply and enable inputs | VDD powers internal circuitry (3–5.5V); VDDIO/EN sets digital I/O reference and enables device operation when pulled high. |
| PWM, SCLK/SCL, MOSI/SDA, MISO, NSS | Digital control interface | Supports standalone PWM dimming or full configuration via SPI (4-wire) or I²C (2-wire); NSS doubles as fault reset in I²C mode. |
| TSENSE | External temperature sensor input | Analog input for NTC thermistor; enables automatic LED current reduction to prevent thermal runaway in high-ambient conditions. |
| FAULT | Open-drain fault indicator | Asserts low on overtemperature, LED open/short, VIN OVP/UVP, or boost fault; requires external pull-up for system-level monitoring. |
| SYNC, VSYNC | Timing synchronization inputs | SYNC aligns boost switching to external clock; VSYNC synchronizes LED PWM to display vertical refresh for artifact-free video playback. |
| ISENSE, ISENSE_GND | Boost current sense terminals | Differential pair for sensing external FET current; enables precise overcurrent protection and adaptive loop control. |
Key Features
| Feature | Design Value |
|---|---|
| Hybrid PWM + current dimming | Reduces EMI by >10dB and extends LED lifetime by minimizing current ripple stress during low-brightness operation. |
| Adaptive boost voltage control | Minimizes power loss by dynamically adjusting VBOOST to just above the highest LED string forward voltage, improving system efficiency by up to 8%. |
| Phase-shifted PWM (PSPWM) | Staggers ON-times across four channels to cut peak boost current by 75%, lowering output capacitor size and eliminating audible ceramic capacitor noise. |
| Extensive fault diagnostics | Reports LED open/short, thermal shutdown, VIN OVP/UVP, boost overcurrent, and TSENSE open-circuit via single FAULT pin with latchable status. |
| Programmable spread-spectrum | Modulates switching frequency to disperse EMI energy across a 200kHz band, easing compliance with CISPR 25 Class 5 radiated emissions limits. |
Applications
| Automotive Instrument Clusters | Infotainment Display Backlight |
|---|---|
Use Scenario: High-reliability backlight for analog/digital gauge clusters with variable ambient lighting and wide temperature operation. IC Role / Device Role / Timing Role: Primary LED driver managing four independent zones (speedometer, tachometer, fuel, warning icons) with synchronized dimming and thermal derating. Use Value: Ensures consistent color and brightness across all gauges under –40°C cold start and +125°C dashboard conditions, with no visible flicker during rapid speed changes. |
Use Scenario: Backlight for 7–10 inch TFT-LCD infotainment screens in center console, requiring smooth dimming and AM-band EMI immunity. IC Role / Device Role / Timing Role: System-level backlight controller interfacing with display processor via VSYNC to eliminate motion artifacts during video playback. Use Value: Phase-shifted PWM eliminates audible noise from ceramic capacitors and reduces conducted EMI by 12dB, meeting OEM EMC requirements without shielding. |
| Heads-Up Display (HUD) | Smart Rearview Mirror |
Use Scenario: Compact, high-efficiency backlight for projection-type HUDs where space, thermal budget, and optical uniformity are critical. IC Role / Device Role / Timing Role: Precision current source delivering stable 150mA per channel to RGB LED arrays with <0.5% matching for accurate color point maintenance. Use Value: Adaptive boost voltage control maintains >92% efficiency across 5–15V input range, minimizing heat generation inside sealed HUD projector housing. |
Use Scenario: Dimmable backlight for electrochromic or LCD-based smart mirrors with auto-dimming and glare reduction features. IC Role / Device Role / Timing Role: Dual-mode driver supporting cluster mode for independent top/bottom zone dimming and display mode for full-screen video compatibility. Use Value: 16-bit dimming resolution enables seamless transition between daylight (100%) and night (0.01%) brightness without perceptible steps or flicker. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP8862RQVFPRQ1 | 2-channel version with identical 150mA/channel rating, same 3–48V input, but lacks I²C interface and TSENSE pin. | Suitable only for simpler 2-string backlight designs without thermal feedback or multi-interface flexibility. | Select when cost reduction and reduced channel count outweigh need for thermal management and dual-protocol control. |
| TPS61194QPWPRQ1 | 4-channel driver with 100mA/channel, 4.5–45V input, no spread-spectrum, no VSYNC, and no adaptive boost voltage control. | Targeted at mid-tier infotainment with lower LED current demands and relaxed EMI requirements. | Choose for legacy designs where 100mA/channel suffices and AM-band EMI mitigation is not required. |
Compared with LP8860RQVFPRQ1, LP8862RQVFPRQ1 offers fewer channels and no thermal sensing, while TPS61194QPWPRQ1 provides lower current per channel and lacks adaptive voltage control-making LP8860RQVFPRQ1 the only option supporting full-feature, thermally robust, 4×150mA automotive backlighting with AM-band EMI suppression.
Availability
LP8860RQVFPRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, infotainment display backlights, and heads-up displays requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.
Supply support for LP8860RQVFPRQ1 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 signal chain solutions.
The LP8860RQVFPRQ1 belongs to TI's automotive LED driver product line, engineered specifically for high-reliability LCD backlighting in safety-critical vehicle displays where EMI, thermal stability, and functional safety are paramount.
FAQ
What is the maximum LED string current supported by LP8860RQVFPRQ1?
LP8860RQVFPRQ1 supports up to 150mA per channel across all four current sinks (OUT1–OUT4). This rating is maintained over the full AEC-Q100 Grade 1 temperature range (–40°C to +125°C ambient) with ≤0.75V saturation voltage at full load, enabling efficient drive of medium-brightness LED strings in automotive displays.
Does LP8860RQVFPRQ1 support synchronization with display refresh signals?
Yes, LP8860RQVFPRQ1 includes a dedicated VSYNC input pin that synchronizes LED PWM generation to the display's vertical refresh rate. This prevents visual artifacts such as tearing or rolling bands during video playback in infotainment systems and HUDs, ensuring temporal alignment between pixel update and backlight modulation.
How does LP8860RQVFPRQ1 reduce electromagnetic interference (EMI)?
LP8860RQVFPRQ1 reduces EMI through three integrated methods: programmable boost switching frequency (100kHz–2.2MHz) to avoid AM radio band, hardware-enabled spread-spectrum modulation to disperse spectral energy, and phase-shifted PWM across its four outputs to lower peak current harmonics-collectively enabling CISPR 25 Class 5 compliance without external filtering.
Can LP8860RQVFPRQ1 operate without a microcontroller interface?
Yes, LP8860RQVFPRQ1 supports standalone operation using only four pins: VDDIO/EN for enable, PWM for brightness control, FAULT for status indication, and NSS for fault reset. This allows simple integration into cost-sensitive or resource-constrained automotive modules without requiring SPI or I²C host firmware.
What thermal protection mechanisms are implemented in LP8860RQVFPRQ1?
LP8860RQVFPRQ1 implements junction-temperature-based thermal shutdown at 150°C (typical), with 30°C hysteresis, plus external thermal regulation via the TSENSE pin. When paired with an NTC thermistor, it automatically reduces LED current to maintain safe operating temperatures-critical for enclosed instrument cluster and HUD assemblies where airflow is limited.
LP8860RQVFPRQ1 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)
LP8860RQVFPRQ1 FAQ
1.How can I place an order for LP8860RQVFPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8860RQVFPRQ1 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 LP8860RQVFPRQ1 reliable?
The price and inventory of LP8860RQVFPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8860RQVFPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8860RQVFPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8860RQVFPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8860RQVFPRQ1?
LP8860RQVFPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8860RQVFPRQ1 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 LP8860RQVFPRQ1?
For technical support, including LP8860RQVFPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8860RQVFPRQ1 requirements.
6.How does Aetrix verify that LP8860RQVFPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8860RQVFPRQ1 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 LP8860RQVFPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8860RQVFPRQ1?
All LP8860RQVFPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8860RQVFPRQ1, 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 LP8860RQVFPRQ1 part is unused and in its original packaging.
Return procedure for LP8860RQVFPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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