My Inquiry
My Account
Texas Instruments LP8860BQVFPRQ1
- Part No.:
- LP8860BQVFPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 32-PowerLQFP
- Datasheet:
-
LP8860BQVFPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 32HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,251
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP8860BQVFPRQ1 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 and brightness management IC in LCD-based automotive displays.
For engineers reviewing the LP8860BQVFPRQ1 datasheet, LP8860BQVFPRQ1 pinout, LP8860BQVFPRQ1 application, or LP8860BQVFPRQ1 equivalent, this page delivers verified technical context, exact pin functions, real-world automotive backlight use cases, and two validated alternative parts with documented functional and application-level differences.
Technical Context
The LP8860BQVFPRQ1 integrates a programmable-frequency (100kHz–2.2MHz) boost converter with adaptive output voltage control-dynamically adjusting VOUT to match LED string headroom-and supports spread-spectrum switching to suppress EMI in AM-sensitive automotive environments. Its hybrid PWM/current dimming architecture enables >13,000:1 dimming ratio while minimizing thermal stress on LEDs.
It operates in two configurable modes: Display Mode (full feature set including phase-shifted PWM for ripple reduction and audible-noise suppression) and Cluster Mode (simplified independent channel control). Control is supported via standalone PWM/EN/FAULT signals or full-featured SPI/I²C interfaces with register-mapped diagnostics and temperature compensation.
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 driving four independent LED strings (e.g., top/bottom/left/right zones) at full brightness without external current-setting resistors. |
| Current Matching | 0.5% typical - ensures uniform luminance across display zones, critical for seamless backlight blending in instrument clusters and HUDs. |
| Dimming Resolution | 16-bit SPI/I²C or external PWM - provides fine-grained brightness control down to 0.0015% step size for flicker-free, high-dynamic-range dimming. |
| Boost Switching Frequency | 100kHz to 2.2MHz with spread-spectrum option - allows EMI optimization: select sub-AM-band (≤530kHz) or above-AM-band (>1.7MHz) operation and reduce peak spectral energy. |
| Ambient Operating Temperature | −40°C to +125°C - qualified per AEC-Q100 Grade 1, enabling placement near heat-generating display electronics or under-hood proximity in HUD modules. |
| Fault Diagnostics | Comprehensive detection including LED open/short, overtemperature, overvoltage, overcurrent, and thermal shutdown - reduces need for external monitoring circuitry in safety-critical systems. |
Pinout & Package
LP8860BQVFPRQ1 is housed in a 32-pin HLQFP (PowerPAD™) package measuring 7.00mm × 7.00mm with exposed thermal pad (EP) for enhanced heat dissipation in high-power backlight applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT1–OUT4 | LED current sink outputs | Four independent, matched-current outputs capable of sinking up to 150mA each; connect directly to cathodes of LED strings. |
| VDD, VDDIO/EN | Internal logic & interface supply / Enable input | VDD powers internal circuitry (3–5.5V); VDDIO/EN sets digital I/O voltage level and acts as hardware enable (active-high). |
| PWM, NSS, SCLK/SCL, MOSI/SDA, MISO | Control interface terminals | Supports both standalone PWM dimming and full SPI/I²C configuration; NSS doubles as fault reset in I²C mode. |
| ISENSE, ISENSE_GND, GD, FB | Boost converter feedback & control | Enables closed-loop boost regulation: ISENSE monitors inductor current, GD drives external N-channel FET gate, FB senses output voltage. |
| TSENSE, VSENSE_P/N, SD | Protection & sensing inputs | TSENSE connects to external NTC for automatic current derating; VSENSE_P/N monitor input rail for OVP/UVP; SD controls external power-line p-FET for inrush limiting. |
| FAULT, SQW | Diagnostic & auxiliary outputs | Open-drain FAULT asserts low on any detected fault condition; SQW provides square-wave clock output for auxiliary rails or timing sync. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Boost Output Voltage Control | Minimizes power loss by dynamically setting boost VOUT to just above the highest LED string forward voltage - improves system efficiency by up to 8% vs fixed-output boost in variable-brightness operation. |
| Phase-Shifted PWM (PSPWM) | Staggers ON-times across OUT1–OUT4 to reduce peak boost current and output ripple - cuts ceramic capacitor audible noise and allows smaller COUT (e.g., 2×10µF instead of 4×10µF). |
| Hybrid Dimming Architecture | Combines analog current scaling with digital PWM to maintain high optical efficiency (>90%) across full 13,000:1 dimming range - avoids efficiency collapse at low brightness seen in pure-PWM drivers. |
| Programmable Thermal Derating | Uses external NTC on TSENSE to linearly reduce LED current as temperature rises - prevents thermal runaway in enclosed HUD or cluster housings without firmware intervention. |
| Spread-Spectrum & Sync-Capable Boost | Reduces EMI peak amplitude by >10dB and enables synchronization to display VSYNC or master clock - essential for passing CISPR-25 Class 5 radiated emissions in infotainment head units. |
Applications
| Automotive Instrument Clusters | Heads-Up Displays (HUD) |
|---|---|
Use Scenario: Driving segmented or full-graphic TFT LCDs behind analog gauges or digital speedometers, requiring precise zone dimming and wide temperature operation. IC Role / Device Role / Timing Role: Primary backlight driver with adaptive boost and phase-shifted PWM to eliminate visible ripple and ensure consistent luminance across speedometer, tachometer, and warning indicators. Use Value: 0.5% current matching prevents banding artifacts; 125°C ambient rating enables direct PCB mounting near display glass without heatsinking. |
Use Scenario: Powering high-brightness LED arrays in compact projection optics where thermal density and EMI are tightly constrained. IC Role / Device Role / Timing Role: High-efficiency LED current source synchronized to HUD image refresh via VSYNC input to eliminate flicker during rapid vehicle motion. Use Value: Spread-spectrum boost and PSPWM reduce conducted EMI below CISPR-25 limits; thermal derating via TSENSE prevents LED flux decay at 85°C lens temperatures. |
| Central Information Displays (CID) | Smart Rearview Mirrors |
Use Scenario: Backlighting large-format (≥10") LCD touchscreens in center-stack infotainment systems with dynamic content-driven dimming. IC Role / Device Role / Timing Role: SPI-configurable LED driver supporting display-mode brightness slope control and independent zone dimming for video playback and navigation UIs. Use Value: 16-bit dimming resolution enables smooth transitions between daylight and night modes; 48V input tolerance accommodates 48V mild-hybrid vehicle architectures. |
Use Scenario: Illuminating electrochromic or LCD-based smart mirrors with auto-dimming and camera overlay features in narrow PCB space. IC Role / Device Role / Timing Role: Compact, thermally robust LED driver delivering stable 150mA per channel with minimal external components (no external current sense resistors required). Use Value: HLQFP PowerPAD package achieves 1.6°C/W junction-to-case thermal resistance; integrated fault reporting simplifies ASIL-B diagnostic coverage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP8862BQVFPRQ1 | 2-channel version; no I²C/SPI interface; supports SEPIC topology; identical 150mA/channel rating and 3V–48V input. | Targeted at simpler, cost-sensitive clusters with dual-zone backlighting; lacks display-mode features like PSPWM and brightness slope. | Select when only two LED strings are needed and serial configuration is unnecessary - reduces BOM count and layout area. |
| TPS61194QPWPRQ1 | 4-channel, 100mA/channel; 4.5V–45V input; no boost frequency programming or spread spectrum; I²C-only interface. | Suitable for lower-power CID or mirror applications where EMI margins are looser and peak current demand is ≤100mA/string. | Choose for designs prioritizing I²C simplicity and footprint over thermal headroom - but verify 100mA limit meets LED forward voltage and aging margin requirements. |
Compared with LP8860BQVFPRQ1, LP8862BQVFPRQ1 trades channel count and interface flexibility for reduced complexity and cost in dual-string systems, while TPS61194QPWPRQ1 offers smaller solution size at the expense of peak current capability and advanced EMI mitigation features.
Availability
LP8860BQVFPRQ1 is available at Aetrix Electronics and suitable for automotive instrument clusters, heads-up displays, and central information displays requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for LP8860BQVFPRQ1 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 LP8860BQVFPRQ1 belongs to TI's automotive LED driver product line, engineered specifically for high-reliability, low-EMI backlighting in safety-critical driver information systems-including instrument clusters, HUDs, and CIDs-where thermal resilience and electromagnetic compatibility are non-negotiable.
FAQ
What is the maximum LED string current supported by the LP8860BQVFPRQ1?
The LP8860BQVFPRQ1 supports up to 150mA per channel across all four current sinks (OUT1–OUT4), with 0.5% typical current matching. This rating is valid across the full −40°C to +125°C ambient operating range and does not require external current-setting resistors when configured via SPI/I²C registers. The LP8860BQVFPRQ1 maintains this current accuracy even under varying input voltage (3V–48V) and thermal conditions due to its adaptive headroom control and integrated reference.
Does the LP8860BQVFPRQ1 support synchronization to external display timing signals?
Yes, the LP8860BQVFPRQ1 supports external synchronization via two dedicated inputs: VSYNC accepts display vertical sync pulses to align LED PWM timing with frame updates, eliminating visual tearing; SYNC accepts an external clock signal (e.g., from a display controller) to lock the boost converter's switching frequency, reducing beat frequencies and improving EMI predictability. Both signals are electrically compatible with standard 3.3V CMOS logic levels and require no level-shifting when interfaced with common automotive display SoCs.
How does the LP8860BQVFPRQ1 reduce audible noise in automotive displays?
The LP8860BQVFPRQ1 reduces audible noise through Phase-Shifted PWM (PSPWM), which staggers the ON-times of its four LED outputs to lower peak boost current and output ripple amplitude. This allows smaller ceramic output capacitors that do not mechanically resonate in the 2–20kHz human-audible range. Additionally, its programmable boost frequency (100kHz–2.2MHz) and spread-spectrum mode shift energy away from narrowband peaks, further suppressing coil whine and capacitor squeal commonly heard in LCD backlights during brightness transitions.
Can the LP8860BQVFPRQ1 operate without an external microcontroller?
Yes, the LP8860BQVFPRQ1 supports standalone operation using four dedicated pins: VDDIO/EN for hardware enable, PWM for analog brightness control, FAULT for fault status indication, and NSS for manual fault reset. In this mode, it delivers full functionality-including adaptive boost, thermal derating via TSENSE, and LED open/short detection-without requiring SPI or I²C communication. This simplifies design for cost-sensitive or space-constrained applications like basic instrument clusters where firmware integration is impractical.
What thermal management features does the LP8860BQVFPRQ1 include for automotive under-hood or HUD applications?
The LP8860BQVFPRQ1 includes multiple thermal safeguards: junction temperature monitoring with thermal shutdown at 165°C (typical) and hysteresis of 30°C; programmable LED current derating via external NTC on the TSENSE pin; and a thermally enhanced HLQFP PowerPAD package with 1.6°C/W junction-to-case resistance. These features allow reliable operation at 125°C ambient - critical for HUD projector modules mounted near engine compartments or within sealed display enclosures where airflow is restricted.
LP8860BQVFPRQ1 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)
LP8860BQVFPRQ1 FAQ
1.How can I place an order for LP8860BQVFPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8860BQVFPRQ1 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 LP8860BQVFPRQ1 reliable?
The price and inventory of LP8860BQVFPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8860BQVFPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8860BQVFPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8860BQVFPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8860BQVFPRQ1?
LP8860BQVFPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8860BQVFPRQ1 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 LP8860BQVFPRQ1?
For technical support, including LP8860BQVFPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8860BQVFPRQ1 requirements.
6.How does Aetrix verify that LP8860BQVFPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8860BQVFPRQ1 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 LP8860BQVFPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8860BQVFPRQ1?
All LP8860BQVFPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8860BQVFPRQ1, 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 LP8860BQVFPRQ1 part is unused and in its original packaging.
Return procedure for LP8860BQVFPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP8860BQVFPRQ1 Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
