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Texas Instruments LP8860CQVFPRQ1
- Part No.:
- LP8860CQVFPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerLQFP
- Datasheet:
-
LP8860CQVFPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 32HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,945
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Product details
Overview
LP8860CQVFPRQ1 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 power management unit in instrument clusters and infotainment displays.
For engineers reviewing the LP8860CQVFPRQ1 datasheet, LP8860CQVFPRQ1 pinout, LP8860CQVFPRQ1 application, or LP8860CQVFPRQ1 equivalent, key selection criteria include adaptive boost voltage control, hybrid PWM/current dimming for EMI reduction, thermal derating support via external NTC, and fault diagnostics coverage for open/short LED and overtemperature conditions.
Technical Context
The LP8860CQVFPRQ1 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 operation supports display mode (phase-shifted PWM, global dimming) and cluster mode (independent per-channel dimming).
Control is implemented via standalone analog interface (PWM/EN/FAULT/NSS) or digital serial interface (SPI/I²C), with register-configurable features including boost switching frequency, gate drive strength, thermal current reduction thresholds, and LED short-circuit detection levels. The device includes dedicated pins for external temperature sensing (TSENSE), power-line FET control (SD), and synchronization (SYNC/VSYNC).
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 channels × 150mA max - enables driving multiple LED strings for medium-size LCD backlights without external current amplification. |
| Current Matching Accuracy | 0.5% typical - ensures uniform luminance across display zones by minimizing inter-string current variation at full brightness. |
| Dimming Resolution | 16-bit SPI/I²C or >13,000:1 external PWM - provides smooth grayscale transitions and eliminates visible contouring in high-dynamic-range displays. |
| Boost Switching Frequency | 100kHz to 2.2MHz - allows AM-band avoidance (e.g., 1.8MHz) and compact magnetics selection for space-constrained automotive modules. |
| Operating Temperature | −40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and dashboard-mounted display systems. |
| Fault Diagnostics | Open/short LED, overtemperature, VIN OVP/UVP, boost OCP, and TSENSE disconnection - reduces need for external supervision circuitry in safety-compliant designs. |
Pinout & Package
LP8860CQVFPRQ1 uses the HLQFP-32 (VFP) package with 7.0mm × 7.0mm body size and exposed thermal pad (PowerPAD™). Pin count is 32, with 4 LED sink outputs (OUT1–OUT4), dual ground domains (LGND, PGND, SGND), and dedicated analog/digital I/O for configuration and synchronization.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | LED current sink outputs | Drive individual LED strings; each supports up to 150mA with <0.75V saturation voltage at full load. |
| VDDIO/EN | Digital supply & enable input | 1.65V–5.5V logic supply; asserted high enables device and powers I²C/SPI interface. |
| PWM | Analog brightness control input | Accepts 100Hz–500Hz external PWM signal; minimum pulse width 400ns for precise low-brightness control. |
| FAULT | Open-drain fault indicator | Active-low signal asserts on detected fault; requires external pull-up for system-level interrupt handling. |
| SCLK/SCL, MOSI/SDA, MISO, NSS | I²C/SPI interface pins | Configurable dual-protocol interface; NSS doubles as fault reset in I²C/standalone mode. |
| TSENSE | External NTC thermistor input | Enables automatic LED current reduction based on measured temperature; supports 5.87kΩ–79.67kΩ resistance range. |
| SYNC, VSYNC | Timing synchronization inputs | SYNC aligns boost switching; VSYNC synchronizes LED PWM to display vertical refresh for flicker-free operation. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Boost Voltage Control | Minimizes power loss by dynamically adjusting boost output to just exceed the highest LED string forward voltage plus headroom - improves system efficiency up to 95% at mid-brightness. |
| Phase-Shift PWM (PSPWM) | Staggers PWM timing across four outputs to reduce peak boost current and output ripple - cuts ceramic capacitor audible noise and allows smaller COUT sizing. |
| Hybrid Dimming Architecture | Combines analog current scaling with digital PWM to maintain high optical efficiency (>90%) across full dimming range while avoiding low-current nonlinearity. |
| Programmable Spread Spectrum | Reduces EMI peak amplitude by ±5% frequency dithering - meets CISPR-25 Class 5 radiated emissions limits without added shielding or filtering. |
| Power-Line FET Control (SD) | Drives external p-FET to limit inrush current during startup and disconnect input during standby - achieves <5μA shutdown current and meets automotive quiescent power requirements. |
Applications
| Automotive Instrument Clusters | Infotainment Display Backlight |
|---|---|
Use Scenario: Driving segmented or full-graphic TFT-LCDs in digital dashboards with variable ambient lighting and wide operating temperature. IC Role / Device Role / Timing Role: Primary LED current source and boost power supply; synchronizes PWM dimming to display frame rate via VSYNC. Use Value: Ensures consistent color gamut and contrast ratio across −40°C to +125°C by maintaining precise current matching and thermal derating. |
Use Scenario: Powering edge-lit or direct-lit LED arrays behind center-stack touchscreens in vehicles with dynamic UI brightness adaptation. IC Role / Device Role / Timing Role: High-efficiency backlight driver with hybrid dimming; uses adaptive boost voltage to minimize power draw during low-brightness navigation mode. Use Value: Extends display lifetime by reducing LED junction temperature through automatic current reduction when external NTC detects >85°C board temperature. |
| Heads-Up Display (HUD) Illumination | Smart Mirror Backlighting |
Use Scenario: Providing uniform, low-ripple illumination for combiner-based HUDs where optical artifacts must be eliminated. IC Role / Device Role / Timing Role: Precision current sink with phase-shifted PWM; suppresses mechanical vibration-induced flicker via synchronous LED drive. Use Value: Eliminates visible ripple and audible capacitor noise by operating boost at 2.2MHz and applying 90° phase shift between channels. |
Use Scenario: Enabling auto-dimming electrochromic mirrors with integrated status indicators requiring independent brightness control per zone. IC Role / Device Role / Timing Role: Four-channel independent dimming controller (cluster mode); configures OUT1–OUT4 as separate brightness zones via SPI register writes. Use Value: Supports seamless transition between mirror dimming states using programmable brightness slope control without MCU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP8861CQVFPRQ1 | Lower per-channel current (100mA), no I²C/SPI interface, supports SEPIC topology | Targeted at cost-sensitive clusters with fewer LEDs; lacks digital configurability and display-mode features | Select when system requires SEPIC capability for input voltages exceeding 45V or when digital control is unnecessary. |
| TPS61194QPWPRQ1 | 3-channel, 100mA/channel, no boost sync or VSYNC, fixed 2.2MHz switching | Optimized for compact AVN displays with minimal feature set; missing thermal derating and advanced diagnostics | Choose for space-constrained designs needing only basic PWM dimming and no external temperature compensation. |
Compared with LP8860CQVFPRQ1, LP8861CQVFPRQ1 trades digital interface and higher current for SEPIC flexibility, while TPS61194QPWPRQ1 sacrifices channel count and diagnostics for smaller footprint and simpler layout - neither offers adaptive boost voltage or phase-shift PWM.
Availability
LP8860CQVFPRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, infotainment display backlights, and HUD illumination requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LP8860CQVFPRQ1 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 LP8860CQVFPRQ1 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 compliance are mandatory.
FAQ
What is the maximum LED string voltage supported by LP8860CQVFPRQ1?
The LP8860CQVFPRQ1 boost converter supports output voltages up to 48V, enabling it to drive LED strings with combined forward voltages up to approximately 45V (accounting for 3V headroom). This accommodates configurations such as 12 white LEDs (3.5V each) in series per channel, verified under recommended operating conditions with adaptive voltage control enabled.
Does LP8860CQVFPRQ1 support both I²C and SPI communication simultaneously?
No, LP8860CQVFPRQ1 does not support concurrent I²C and SPI operation. Interface selection is determined by the IF pin state: low enables I²C/standalone mode, high enables SPI mode. The MOSI/SDA and SCLK/SCL pins share functionality but cannot be used for both protocols at once - configuration is static at power-up.
How does the adaptive boost voltage control in LP8860CQVFPRQ1 improve system efficiency?
LP8860CQVFPRQ1 continuously monitors the headroom voltage across each LED current sink (OUT1–OUT4) and adjusts the boost output to the minimum level required to maintain regulation. This reduces power dissipation in the boost stage and current sinks, improving full-load efficiency by up to 7% compared to fixed-output boost architectures, especially at partial brightness.
Can LP8860CQVFPRQ1 drive more than four LED strings?
Yes, LP8860CQVFPRQ1 can drive more than four LED strings by paralleling its four current sinks - for example, connecting two sinks per string doubles per-string current capacity to 300mA. However, this reduces per-string accuracy due to matching tolerance accumulation and requires careful PCB layout to balance thermal and routing effects across parallel paths.
What fault conditions does LP8860CQVFPRQ1 detect and report via the FAULT pin?
LP8860CQVFPRQ1 asserts the FAULT pin for open-circuit or short-circuit LED conditions, overtemperature (TJ > 165°C), VIN undervoltage/overvoltage, boost overcurrent, TSENSE disconnection, and internal register checksum errors. Fault sources are distinguishable via SPI/I²C readable status registers, enabling targeted system recovery without full reset.
LP8860CQVFPRQ1 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)
LP8860CQVFPRQ1 FAQ
1.How can I place an order for LP8860CQVFPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8860CQVFPRQ1 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 LP8860CQVFPRQ1 reliable?
The price and inventory of LP8860CQVFPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8860CQVFPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8860CQVFPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8860CQVFPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8860CQVFPRQ1?
LP8860CQVFPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8860CQVFPRQ1 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 LP8860CQVFPRQ1?
For technical support, including LP8860CQVFPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8860CQVFPRQ1 requirements.
6.How does Aetrix verify that LP8860CQVFPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8860CQVFPRQ1 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 LP8860CQVFPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8860CQVFPRQ1?
All LP8860CQVFPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8860CQVFPRQ1, 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 LP8860CQVFPRQ1 part is unused and in its original packaging.
Return procedure for LP8860CQVFPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP8860CQVFPRQ1 Tags
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LYT1604D-TL
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HV9910CLG-G
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CL2N8-G
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BCR420UFD-7
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