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Texas Instruments LP8863ADCPRQ1
- Part No.:
- LP8863ADCPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Datasheet:
-
LP8863ADCPRQ1.pdf
- Description:
- IC LED DRVR CTRLR PWM 38HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
LP8863ADCPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED backlight driver IC with six 150-mA precision current sinks, 3 V–48 V input range, adaptive boost output voltage control up to 47 V, and hybrid PWM/current dimming supporting 32,000:1 dimming ratio at 152 Hz. It targets high-reliability display systems in instrument clusters and HUDs.
For engineers reviewing the LP8863ADCPRQ1 datasheet, LP8863ADCPRQ1 pinout, LP8863ADCPRQ1 application, or LP8863ADCPRQ1 equivalent, key selection criteria include its six-channel independent current control, integrated charge pump for cold-crank support, boost sync input for EMI reduction, and fault diagnostics including LED short/open detection and thermal warning thresholds.
Technical Context
The LP8863ADCPRQ1 integrates a synchronous boost/SEPIC DC/DC controller with programmable switching frequency (300 kHz–2.2 MHz), adaptive output voltage regulation based on real-time LED headroom sensing, and internal gate drivers for external N-channel FETs. Its hybrid dimming combines low-frequency PWM with analog current adjustment to minimize EMI while preserving optical efficiency.
It features dual interface support (SPI/I²C via IFSEL pin), automatic phase-shift optimization across active LED channels, and comprehensive protection including input UVLO/OVP, thermal shutdown (155°C), and LED open/short detection with configurable thresholds. The charge pump enables stable operation down to 3 V VIN during cold-crank conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 48 V - supports full automotive battery range including cold-crank (3 V) and load-dump transients. |
| LED Current per Channel | 150 mA max - six independent high-precision current sinks with ≤1% typical matching for uniform brightness. |
| Dimming Ratio | 32,000:1 at 152 Hz - enables deep-black contrast in automotive displays without visible flicker. |
| Boost Output Voltage | Up to 47 V - sufficient for driving long LED strings in multi-zone backlighting architectures. |
| Switching Frequency | 300 kHz to 2.2 MHz - adjustable via BST_FSET resistor to avoid AM radio band and optimize efficiency/layout. |
| Operating Temperature | −40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and dashboard mounting. |
| Interface Support | SPI or I²C - selected by IFSEL pin; enables flexible integration with MCU-based display controllers. |
Pinout & Package
LP8863ADCPRQ1 is housed in a thermally enhanced 38-pin HTSSOP package (9.70 mm × 4.40 mm) with exposed pad (GND_LED) for improved thermal dissipation in high-power LED driver applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Analog/digital power supply | 3.3 V or 5 V input for LDO, charge pump, and analog blocks; requires 4.7-µF decoupling. |
| EN | Enable control input | Active-high enable; must be pulled low before VDD during shutdown to ensure safe discharge. |
| LED0–LED5 | Current sink outputs | Six independent 150-mA LED drive terminals; each supports phase-shifted PWM for EMI reduction. |
| GD | Gate driver output | Drives external N-channel boost FET; supports 6.6 V–11 V gate drive depending on CPUMP state. |
| BST_SYNC | Boost synchronization input | Accepts external clock to lock boost switching frequency; disables spread spectrum when grounded. |
| ISET | LED current reference | Analog input setting full-scale current; determines 150-mA sink capability via external resistor. |
| INT | Fault interrupt output | Open-drain signal indicating thermal warning, LED fault, or overcurrent; requires 10-kΩ pullup to VDDIO. |
| IFSEL | Interface select | Low = SPI mode (SDO_PWM = SDO); high = I²C mode (SDO_PWM = PWM input). |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Boost Voltage Control | Minimizes power loss by dynamically adjusting VOUT to just above the highest LED string headroom (0.55 V typical), reducing heat and improving system efficiency. |
| Hybrid Dimming Architecture | Combines low-frequency PWM with analog current scaling to eliminate audible noise, extend LED lifetime, and maintain >90% optical efficiency across dimming range. |
| Integrated Charge Pump | Enables reliable startup and operation at VIN as low as 3 V (cold crank), eliminating need for external charge pump circuitry and saving board space. |
| Automated Phase Shifting | Dynamically distributes PWM timing across active LED channels to reduce peak input current and lower conducted EMI without firmware intervention. |
| Comprehensive Fault Diagnostics | Detects LED open/short (configurable thresholds 2.6 V–5.9 V), thermal warning (95°C–135°C), overtemperature shutdown (155°C), and input OVP/UVLO with hysteresis. |
Applications
| Automotive Instrument Cluster | Heads-Up Display (HUD) |
|---|---|
Use Scenario: High-brightness, wide-temperature TFT-LCD backlight requiring uniform luminance and deep dimming in direct sunlight and nighttime conditions. IC Role / Device Role / Timing Role: Six-channel LED driver with adaptive VOUT and hybrid dimming ensures consistent color gamut and zero-flicker performance across −40°C to +125°C. Use Value: 1% current matching and 32,000:1 dimming ratio preserve contrast ratio and readability without manual calibration or thermal derating. |
Use Scenario: Compact projection-based HUD with multi-zone LED backlight needing precise intensity control and minimal EMI near RF-sensitive ADAS sensors. IC Role / Device Role / Timing Role: Boost controller with spread-spectrum sync and automated phase shifting suppresses EMI peaks that could interfere with radar or camera modules. Use Value: 300 kHz–2.2 MHz adjustable switching frequency avoids AM band (530–1710 kHz), enabling coexistence with infotainment RF systems. |
| Central Information Display (CID) | Smart Rearview Mirror |
Use Scenario: Large-format LCD display with dynamic local dimming zones powered by segmented LED strings requiring independent current control and fault isolation. IC Role / Device Role / Timing Role: Independent channel enable/disable and per-string open/short detection allow real-time zone reconfiguration without display interruption. Use Value: Six isolated current sinks with dedicated INT flag enable fail-operational behavior-e.g., maintaining partial display if one LED string fails. |
Use Scenario: Automotive-grade smart mirror integrating ambient light-adaptive backlighting with rapid response to changing cabin illumination and glare conditions. IC Role / Device Role / Timing Role: Fast PWM input response (200 ns min pulse) and 16-bit resolution at 100 Hz enable smooth, stepless brightness transitions synchronized to ambient sensor output. Use Value: Hybrid dimming eliminates PWM-induced shimmer during video playback while maintaining <1% brightness error across 0–100% intensity range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED backlight driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP8862-Q1 | 2-channel, 160-mA sinks; no SPI/I²C; SEPIC-only topology; 4.5 V–45 V input. | Limited to simpler displays with fewer zones; lacks hybrid dimming and adaptive VOUT. | Select when cost and channel count are prioritized over flexibility and EMI performance. |
| TPS61196-Q1 | 6-channel, 200-mA sinks; no boost controller; requires external DC/DC; 8 V–30 V input. | Needs separate high-voltage supply; unsuitable for low-VIN cold-crank operation. | Choose only if system already provides regulated ≥30 V rail and higher per-channel current is required. |
Compared with LP8863ADCPRQ1, LP8862-Q1 offers reduced integration and narrower input range but lower BOM cost, while TPS61196-Q1 trades off boost autonomy and cold-crank capability for higher current per channel and simplified thermal layout.
Availability
LP8863ADCPRQ1 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 LP8863ADCPRQ1 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 electronics, with decades of experience in high-reliability power management and signal chain solutions.
The LP8863ADCPRQ1 belongs to TI's automotive LED driver product line, designed specifically for high-efficiency, fault-resilient backlighting in safety-critical cockpit displays where thermal robustness, EMI control, and AEC-Q100 compliance are mandatory.
FAQ
What is the maximum LED string voltage supported by LP8863ADCPRQ1?
The LP8863ADCPRQ1 supports up to 47 V boost output voltage in boost mode, enabling driving of long LED strings-e.g., 12× white LEDs at 3.5 V VF each-with sufficient headroom. This rating is confirmed in Section 7.10 of the datasheet under VOUT specification and applies directly to LP8863ADCPRQ1 with appropriate feedback resistors (RFBTOP = 910 kΩ, RFBBOT = 100 kΩ).
Does LP8863ADCPRQ1 support both SPI and I²C communication simultaneously?
No, LP8863ADCPRQ1 supports either SPI or I²C-not both simultaneously. The interface mode is selected by the logic level on the IFSEL pin: low enables SPI (with SDO_PWM as data output), and high enables I²C (with SDO_PWM repurposed as PWM brightness input). This hardware-selectable dual-interface design prevents bus contention and simplifies MCU integration.
How does the LP8863ADCPRQ1 handle cold-crank conditions below 4 V?
The LP8863ADCPRQ1 maintains operation during cold-crank (down to 3 V VIN) using its integrated charge pump, which boosts internal supply rails to sustain gate drive and analog functionality. When CPUMP is enabled, GD output can reach 6.6 V–11 V even at low VIN, ensuring reliable boost FET switching-confirmed in Section 7.10's VGD specifications and Figure 10-1 efficiency curves.
What fault conditions trigger the INT pin on LP8863ADCPRQ1?
The INT pin asserts low for multiple fault conditions including LED open/short detection (configurable threshold), thermal warning (95°C–135°C), thermal shutdown (155°C), input overvoltage/undervoltage, and boost overcurrent. Each fault type is latched and readable via register 0x1E (FAULT_STATUS), allowing precise root-cause diagnosis without external monitoring circuitry.
Can LP8863ADCPRQ1 drive LED strings with different forward voltages on separate channels?
Yes, LP8863ADCPRQ1 supports mixed LED string configurations because its adaptive VOUT control continuously monitors headroom across all active channels and sets the minimum sufficient output voltage. Each current sink (LED0–LED5) operates independently with its own saturation voltage (0.4 V–0.79 V), enabling simultaneous driving of strings with varying VF-verified in Section 7.7's VSAT and VHEADROOM specs.
LP8863ADCPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 38-PowerTFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Controller
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- No
- Number of Outputs:
- 6
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 48V
- Voltage - Output:
- -
- Current - Output / Channel:
- 150mA
- Frequency:
- 300kHz ~ 2.2MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 38-HTSSOP
LP8863ADCPRQ1 FAQ
1.How can I place an order for LP8863ADCPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP8863ADCPRQ1 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 LP8863ADCPRQ1 reliable?
The price and inventory of LP8863ADCPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP8863ADCPRQ1 is usually 5 days.
3.What payment methods are accepted for LP8863ADCPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP8863ADCPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP8863ADCPRQ1?
LP8863ADCPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP8863ADCPRQ1 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 LP8863ADCPRQ1?
For technical support, including LP8863ADCPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP8863ADCPRQ1 requirements.
6.How does Aetrix verify that LP8863ADCPRQ1 is sourced from the original manufacturer or authorized distributors?
All LP8863ADCPRQ1 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 LP8863ADCPRQ1 meets industry standards.
7.What is the process for return or replacement of LP8863ADCPRQ1?
All LP8863ADCPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP8863ADCPRQ1, 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 LP8863ADCPRQ1 part is unused and in its original packaging.
Return procedure for LP8863ADCPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP8863ADCPRQ1 Tags
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BCR402RE6327HTSA1
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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
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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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