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Texas Instruments LP875610BRNFRQ1
- Part No.:
- LP875610BRNFRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 26-PowerVFQFN
- Datasheet:
-
LP875610BRNFRQ1.pdf
- Description:
- IC REG BUCK ADJ 16A 26VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
LP875610BRNFRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive buck converter IC with four integrated high-efficiency DC/DC phases configured as a single 4-phase output delivering up to 16 A total (4 A per phase), 2.8 V–5.5 V input, 0.6 V–3.36 V programmable output, and 2 MHz fixed switching frequency - used in infotainment and ADAS domain controller power rails.
For engineers reviewing the LP875610BRNFRQ1 datasheet, LP875610BRNFRQ1 pinout, LP875610BRNFRQ1 application, or LP875610BRNFRQ1 equivalent, key selection factors include multiphase current balancing accuracy, I²C-configurable slew rate (0.47–10 mV/µs), PGOOD programmability, thermal warning/shutdown thresholds, and GPIO-enabling of external regulators during power sequencing.
Technical Context
The LP875610BRNFRQ1 implements automatic PWM-to-PFM mode transition and dynamic phase adding/shedding (e.g., 1→2→3→4-phase activation at ≥1 A, ≥2 A, ≥3 A load steps) to maintain >80% efficiency across 0.001 A–16 A output range. Its 4-phase architecture supports remote differential voltage sensing on FB_B0–FB_B3 for point-of-load IR-drop compensation.
Control is executed via I²C interface supporting Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) modes, with dedicated EN1/EN2/EN3 pins configurable as GPIOs or dual-voltage enable signals. The device integrates high-side (29–65 mΩ) and low-side (17–35 mΩ) FETs per phase and supports external clock synchronization via CLKIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8 V to 5.5 V - supports direct connection to automotive battery rail with cold-crank margin. |
| Output Voltage Range | 0.6 V to 3.36 V in 5–20 mV steps - enables precise core voltage setting for SoCs and FPGAs. |
| Max Output Current | 16 A (4-phase mode, VIN ≥3 V) - delivers high-current POL for radar processors without external phase controllers. |
| Switching Frequency | 2 MHz ±10% - allows compact 0.47 µH inductors and reduces EMI filtering burden. |
| Efficiency Peak | ≥90% at 4–10 A (VOUT=1.8 V, VIN=3.7 V) - minimizes thermal load in sealed automotive enclosures. |
| I²C Speed Support | Up to 3.4 MHz High-Speed mode - enables fast register writes during dynamic voltage scaling sequences. |
| Thermal Protection | Die temperature warning at 115–135 °C and shutdown at 140–160 °C - ensures safe operation under sustained load. |
Pinout & Package
VQFN-HR (26-pin) package, 4.50 mm × 4.00 mm body size with exposed thermal pad - optimized for automotive PCB space constraints and thermal dissipation (RθJA = 34.6 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW_B0–SW_B3 | Buck switch node (x4) | Connects to inductor high-side terminal; requires local ceramic bypass and Kelvin routing for EMI control. |
| FB_B0–FB_B3 | Output voltage feedback (x4) | Differential sense inputs enabling remote sensing; FB_B1/FB_B3 double as negative feedback for adjacent rails. |
| VIN_B0–VIN_B3 | Phase input supply (x4) | Independent power pins - must be externally tied together and locally bypassed to PGND_B01/PGND_B23. |
| EN1/EN2/EN3 | Configurable enable/GPIO (x3) | Supports hardware sequencing of external regulators or processor reset assertion during startup/shutdown. |
| SDA/SCL | I²C bidirectional data/clock | Supports 3.4 MHz HS-mode; requires pull-up to VANA (1.65–3.6 V) and noise-filtering layout per TI SNVA874. |
| PGOOD | Programmable power-good output | Open-drain signal with 4 µs–13 ms debounce; monitors ±8–64 mV window around final VOUT level. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable multiphase topology | Single 4-phase output only (LP87561-Q1 variant) - eliminates need for external phase-interleaving logic in high-current SoC rails. |
| Programmable output slew rate | 0.47–10 mV/µs (7 settings) - prevents overshoot/in-rush during voltage transitions and enables controlled ramp timing. |
| Integrated current measurement | ±10% accuracy over 0–20.47 A range without external sense resistors - simplifies BOM and improves thermal performance. |
| Spread-spectrum & phase interleaving | Reduces peak EMI amplitude by distributing energy across 2 MHz ±10% band - meets CISPR-25 Class 5 requirements. |
| Automated phase management | Dynamic add/shed at 0.7–3 A thresholds - maintains >85% efficiency from 10 mA to full load without firmware intervention. |
Applications
| Infotainment Domain Controller | ADAS Radar Processor Rail |
|---|---|
Use Scenario: Powering multi-core ARM-based infotainment SoC requiring 1.1 V @ 12 A with tight transient response. IC Role / Device Role / Timing Role: Primary 4-phase POL regulator with I²C-configured soft-start, slew rate, and PGOOD handshake to SoC. Use Value: Delivers 16 A peak current with ±3% load step response (0–8 A, 10 µs edge) and eliminates discrete PMIC complexity. |
Use Scenario: Supplying 1.0 V @ 8 A to millimeter-wave radar DSP under engine vibration and temperature cycling. IC Role / Device Role / Timing Role: Automotive-grade buck controller with AEC-Q100 Grade 1 qualification and thermal warning at 125 °C. Use Value: Maintains regulation during cold-crank (2.8 V input) and provides die-temp telemetry via I²C for predictive thermal throttling. |
| Instrument Cluster Display SoC | Camera ISP Core Voltage |
Use Scenario: Generating 0.85 V @ 6 A for GPU and display subsystem in digital instrument cluster with EMC constraints. IC Role / Device Role / Timing Role: Low-noise 4-phase regulator using spread-spectrum mode and phase interleaving to suppress 2 MHz harmonics. Use Value: Achieves <3 mVp-p ripple in PWM mode, meeting display pixel-clock jitter requirements without added LC filtering. |
Use Scenario: Providing 1.2 V @ 4 A to image signal processor in rear-view camera module with space-limited PCB layout. IC Role / Device Role / Timing Role: Compact VQFN-HR (4.5 × 4.0 mm) power stage with integrated FETs and remote sensing on FB pins. Use Value: Enables single-chip solution replacing 4 discrete buck converters, reducing board area by >60% and component count by 12+. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP87562-Q1 | Configured as one 3-phase + one 1-phase output (12 A + 4 A); different pin-mapped FB/EN assignments. | Used where heterogeneous voltage rails (e.g., 1.1 V CPU + 3.3 V I/O) are required simultaneously. | Select LP87562-Q1 when independent dual-rail control is needed instead of single high-current rail. |
| TPS65917-Q1 | 7-channel PMIC with 3 buck converters (max 3 A each), LDOs, and fuel gauge; no 4-phase capability. | Targeted at lower-power infotainment head units with mixed analog/digital supply needs. | Choose TPS65917-Q1 for cost-sensitive designs needing integrated LDOs and battery management, not high-current POL. |
Compared with LP87562-Q1 and TPS65917-Q1, the LP875610BRNFRQ1 uniquely delivers 16 A from a single 4-phase rail in minimal footprint, making it optimal for next-gen automotive SoCs requiring >10 A core voltage with strict thermal and EMI limits - whereas alternatives trade current capacity for rail count or integration breadth.
Availability
LP875610BRNFRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS radar, and digital instrument cluster applications requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for LP875610BRNFRQ1 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 power management solutions, with decades of automotive qualification expertise.
The LP8756x-Q1 product line was designed specifically for high-current, low-voltage power delivery in automotive domain controllers and ADAS systems - emphasizing AEC-Q100 reliability, I²C configurability, and multiphase efficiency across wide load ranges.
FAQ
What is the maximum output current capability of the LP875610BRNFRQ1?
The LP875610BRNFRQ1 delivers up to 16 A total output current in its native 4-phase configuration (4 A per phase) when input voltage is ≥3 V. At 2.8 V–3 V input, maximum output is derated to 12 A. This rating assumes proper thermal design with RθJA ≤34.6 °C/W and use of recommended 0.47 µH inductors and 22 µF/phase output capacitance.
Does the LP875610BRNFRQ1 support remote voltage sensing?
Yes, the LP875610BRNFRQ1 supports true remote differential voltage sensing via dedicated FB_B0–FB_B3 pins. Each FB pin connects directly to the point-of-load to compensate for PCB trace IR drop, improving output voltage accuracy to ±2% (for VOUT ≥1 V) even under high-current transients - a critical feature for SoC core rail stability.
How is power sequencing controlled on the LP875610BRNFRQ1?
Power sequencing on the LP875610BRNFRQ1 is managed through three configurable EN1/EN2/EN3 pins (usable as GPIOs or dual-voltage enables) and I²C-programmable startup/shutdown delays. These signals can drive external load switches or processor reset lines, enabling synchronized ramp-up of multiple rails - for example, asserting NRST only after all four buck outputs reach regulation.
What protection features does the LP875610BRNFRQ1 include?
The LP875610BRNFRQ1 integrates overtemperature warning (115–135 °C), thermal shutdown (140–160 °C), output short-circuit/overload protection, overvoltage (±64 mV) and undervoltage (±53 mV) monitoring on PGOOD, input UVLO (2.5–2.75 V), and VANA OVP (5.6–6.1 V). All protections trigger automatic fault latching and interrupt assertion via nINT pin.
Can the LP875610BRNFRQ1 operate without an external clock source?
Yes, the LP875610BRNFRQ1 operates autonomously using its internal RC oscillator when CLKIN is grounded. External clock synchronization is optional and used only to reduce EMI through deterministic phase alignment - the device maintains full functionality, including 2 MHz switching and phase management, without external timing.
LP875610BRNFRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 26-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 3.36V
- Current - Output:
- 16A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 26-VQFN-HR (4.5x4)
LP875610BRNFRQ1 FAQ
1.How can I place an order for LP875610BRNFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP875610BRNFRQ1 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 LP875610BRNFRQ1 reliable?
The price and inventory of LP875610BRNFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP875610BRNFRQ1 is usually 5 days.
3.What payment methods are accepted for LP875610BRNFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP875610BRNFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP875610BRNFRQ1?
LP875610BRNFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP875610BRNFRQ1 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 LP875610BRNFRQ1?
For technical support, including LP875610BRNFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP875610BRNFRQ1 requirements.
6.How does Aetrix verify that LP875610BRNFRQ1 is sourced from the original manufacturer or authorized distributors?
All LP875610BRNFRQ1 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 LP875610BRNFRQ1 meets industry standards.
7.What is the process for return or replacement of LP875610BRNFRQ1?
All LP875610BRNFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP875610BRNFRQ1, 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 LP875610BRNFRQ1 part is unused and in its original packaging.
Return procedure for LP875610BRNFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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