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Texas Instruments LP875610RNFTQ1
- Part No.:
- LP875610RNFTQ1
- Manufacturer:
- Texas Instruments
- Package:
- 26-PowerVFQFN
- Datasheet:
-
LP875610RNFTQ1.pdf
- Description:
- IC REG BUCK ADJ 16A QUAD 26VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,350
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Product details
Overview
LP875610RNFTQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive buck converter IC with four integrated high-side/low-side FETs, configured exclusively as a single 4-phase 16-A output (4 A per phase), supporting 0.6 V to 3.36 V programmable output voltage, 2 MHz fixed switching frequency, and I²C-controlled slew-rate (0.5–10 mV/µs). It delivers power to processor cores in automotive infotainment and ADAS domain controllers.
For engineers reviewing the LP875610RNFTQ1 datasheet, LP875610RNFTQ1 pinout, LP875610RNFTQ1 application, or LP875610RNFTQ1 equivalent, key selection criteria include its 4-phase-only topology, remote differential sensing capability, programmable phase-add/shed thresholds (IADD/ISHED), integrated current measurement (±10% accuracy), and automotive-grade thermal warning/shutdown (125°C warn, 150°C shutdown).
Technical Context
The LP875610RNFTQ1 implements a fully synchronous, multi-phase buck architecture with automatic PWM-to-PFM mode transition and dynamic phase shedding-adding phases at ≥3 A load and shedding at ≤2.4 A for optimal efficiency across 0–16 A. Its four independent buck stages share a common 2 MHz clock but support phase interleaving and spread-spectrum modulation to reduce EMI.
Control is executed via a 3.4 MHz-capable I²C interface with register-mapped configuration of output voltage, slew rate, PGOOD thresholds, interrupt masking, and GPIO remapping (EN1–EN3 double as GPIO1–GPIO3). Remote differential sensing on FB_Bx pins compensates for IR drop between regulator output and point-of-load, enabling ±2% DC output accuracy at 1 V and above.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Fixed 4-phase, single-output rail (no reconfiguration to 3+1, 2+2, or 4×1 phases) |
| Max Output Current | 16 A total (4 A per phase), limited by junction temperature and forward current limit (ILIM FWD = 1.5–5 A programmable) |
| Input Voltage Range | 2.8 V to 5.5 V - supports direct connection to automotive battery (cold-crank tolerant down to 2.8 V) |
| Output Voltage Range | 0.6 V to 3.36 V in 5–20 mV steps - covers core logic, I/O, and memory rails for modern SoCs |
| Switching Frequency | 2 MHz ±10% - enables compact 0.47 µH inductors and reduces output ripple (≤3 mVp-p in 4-phase PWM mode) |
| I²C Interface Speed | Up to 3.4 MHz (High-Speed mode) - allows rapid dynamic voltage scaling (DVS) during processor state transitions |
| Thermal Protection | Programmable die temperature warning (115–147°C) and hard shutdown (140–160°C) with 20°C hysteresis |
Pinout & Package
VQFN-HR (26-pin) package, 4.50 mm × 4.00 mm body size, with exposed thermal pad (AGND-connected) for enhanced thermal dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW_B0–SW_B3 | Buck switch node (x4) | Connects to external inductor; each drives one phase of the 4-phase output |
| FB_B0–FB_B3 | Output voltage feedback (x4) | Differential sense inputs enabling remote sensing - FB_B0/FB_B1 pair used for BUCK0, etc. |
| VIN_B0–VIN_B3 | Phase input supply (x4) | Independent input pins - must be externally tied together and locally bypassed per TI layout guidelines |
| PGND_B01 / PGND_B23 | Power ground (2 nets) | Separate ground returns for BUCK0/BUCK1 and BUCK2/BUCK3 to minimize coupling and improve current measurement accuracy |
| EN1, EN2, EN3 | Configurable enable/GPIO (x3) | Can initiate startup sequencing or control external regulators/load switches; support Schmitt-trigger inputs (VIH = 1.2 V) |
| SDA, SCL, nINT, NRST | I²C interface & control signals | Support 3.4 MHz HS-mode I²C; nINT is open-drain with programmable masking; NRST has internal 650–1700 kΩ pulldown |
Key Features
| Feature | Design Value |
|---|---|
| Remote differential voltage sensing | Compensates for PCB trace IR drop between regulator and SoC VDD pins, maintaining ±2% output accuracy at point-of-load |
| Integrated current measurement | Monitors total output current without external sense resistors (20 mA LSB, <10% error >1 A), reducing BOM count and board area |
| Programmable soft-start slew rate | Adjustable from 0.5 to 10 mV/µs - prevents in-rush current and overshoot during power-up or voltage transitions |
| Dynamic phase management | Automatically adds phase at ≥3 A and sheds at ≤2.4 A - maintains >85% efficiency from 0.5 A to full 16 A load |
| Automotive safety features | AEC-Q100 Grade 1 (−40°C to +125°C), HBM ±2 kV / CDM ±500 V, overvoltage/undervoltage lockout, and thermal warning with hysteresis |
Applications
| Infotainment Processor Core Rail | ADAS Radar SoC Power Delivery |
|---|---|
|
Use Scenario: Powers ARM Cortex-A72/A76 or Qualcomm SA8155P application processors in head-unit systems requiring dynamic voltage scaling. IC Role / Device Role / Timing Role: Primary 4-phase buck controller delivering 1.0–1.2 V @ up to 16 A with sub-10 µs transient response. Use Value: Enables fast DVS via I²C (3.4 MHz) and tight output regulation (±2%) despite long PCB traces to processor package. |
Use Scenario: Supplies power to TI's AWR2944 or NXP's S32R45 radar processors in front-end sensor modules. IC Role / Device Role / Timing Role: Single-rail 4-phase regulator with remote sensing and thermal warning for operation in engine bay ambient up to 125°C. Use Value: Maintains stable 1.1 V core rail during radar chirp bursts (transient load steps ≤8 A in <1 µs) with ≤±40 mV deviation. |
| Instrument Cluster GPU Voltage Rail | Automotive Camera ISP Power |
|
Use Scenario: Delivers clean, low-noise 1.8 V to GPU subsystems in digital instrument clusters with TFT-LCD backlight drivers. IC Role / Device Role / Timing Role: 4-phase buck with spread-spectrum modulation and 2 MHz switching to suppress EMI near display timing signals. Use Value: Reduces conducted EMI by >10 dB compared to fixed-frequency operation, easing CISPR-25 Class 5 compliance. |
Use Scenario: Powers image signal processors (e.g., Ambarella CV22AQ) in surround-view camera ECUs with strict ripple requirements. IC Role / Device Role / Timing Role: High-accuracy buck with differential sensing and <3 mVp-p ripple in 4-phase PWM mode. Use Value: Eliminates visible noise bands in captured video by ensuring power rail stability during rolling shutter exposure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-phase buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP875620RNFTQ1 | Configured as one 3-phase + one 1-phase output (12 A + 4 A), not 4-phase only; shares same pinout and I²C register map | Suitable when system requires dual independent rails (e.g., CPU core + I/O) instead of single high-current rail | Select LP875620RNFTQ1 if rail segmentation is needed; LP875610RNFTQ1 is optimal for monolithic 16-A loads. |
| TPS65917B1RSLR | 7-channel PMIC with 3 buck converters (2×2 A, 1×3 A), no 4-phase capability; integrates LDOs, RTC, and charger | Targets lower-power infotainment (e.g., entry-level head units) where integration > peak current matters | Choose TPS65917B1RSLR for highly integrated, cost-sensitive designs; LP875610RNFTQ1 for performance-critical 16-A core rails. |
Compared with LP875620RNFTQ1 and TPS65917B1RSLR, the LP875610RNFTQ1 uniquely delivers uncompromised 4-phase scalability and 16-A continuous output in a pin-compatible 26-pin VQFN-HR package - essential for next-generation automotive processors demanding both high current and tight voltage regulation.
Availability
LP875610RNFTQ1 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 lifecycle support.
Supply support for LP875610RNFTQ1 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 company specializing in analog and embedded processing technologies, with deep expertise in automotive power management and functional safety.
The LP8756x-Q1 product line was designed specifically for high-current, low-voltage power delivery in automotive ADAS and infotainment systems - emphasizing thermal robustness, EMI control, and seamless integration with modern SoCs.
FAQ
What is the maximum output current capability of the LP875610RNFTQ1?
The LP875610RNFTQ1 delivers up to 16 A continuous output current in its fixed 4-phase configuration (4 A per phase), validated across −40°C to +125°C ambient with 2.8 V to 5.5 V input. This rating assumes proper thermal design using the exposed thermal pad and adheres to the device's 150°C thermal shutdown threshold. The LP875610RNFTQ1 achieves this with integrated 29–65 mΩ high-side and 17–35 mΩ low-side FETs per phase.
Does the LP875610RNFTQ1 support dynamic voltage scaling (DVS) via I²C?
Yes, the LP875610RNFTQ1 supports real-time DVS through its I²C interface, which operates up to 3.4 MHz in High-Speed mode. Engineers can reprogram the output voltage (0.6–3.36 V in fine steps), slew rate (0.5–10 mV/µs), and sequencing delays on-the-fly - enabling precise coordination with processor P-states. The LP875610RNFTQ1's register-based control ensures deterministic timing for voltage transitions critical in automotive SoC power management.
Can the LP875610RNFTQ1 be used with remote differential voltage sensing?
Yes, the LP875610RNFTQ1 supports true remote differential sensing using dedicated FB_Bx pins (e.g., FB_B0/FB_B1 for BUCK0). This compensates for IR drop across PCB traces between the regulator output and the SoC's VDD pin, maintaining ±2% output accuracy at the point-of-load. The LP875610RNFTQ1 requires separate sense traces routed directly to the load, as specified in TI's layout guidelines for the VQFN-HR package.
What protection features does the LP875610RNFTQ1 include for automotive use?
The LP875610RNFTQ1 includes AEC-Q100-compliant protections: overtemperature warning (configurable 115–147°C) and shutdown (140–160°C), output overvoltage/undervoltage detection (±39–64 mV / ±29–53 mV), short-circuit and overload protection per phase, and VANA overvoltage/UVLO (5.6–6.1 V / 2.51–2.75 V). These are hardware-enforced and operate independently of firmware, meeting ASIL-B readiness requirements for automotive power rails.
Is the LP875610RNFTQ1 pin-compatible with other devices in the LP8756x-Q1 family?
Yes, all LP8756x-Q1 variants - including LP875610RNFTQ1, LP875620RNFTQ1, LP875630RNFTQ1, LP875640RNFTQ1, and LP875650RNFTQ1 - share identical 26-pin VQFN-HR (RNF) packaging and pinout. However, their internal phase configurations differ: LP875610RNFTQ1 is factory-configured for 4-phase only, while others support 3+1, 2+2, 4×1, or 2+2 topologies. Firmware and register maps are fully compatible across the family.
LP875610RNFTQ1 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:
- 4
- 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)
LP875610RNFTQ1 FAQ
1.How can I place an order for LP875610RNFTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP875610RNFTQ1 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 LP875610RNFTQ1 reliable?
The price and inventory of LP875610RNFTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP875610RNFTQ1 is usually 5 days.
3.What payment methods are accepted for LP875610RNFTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP875610RNFTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP875610RNFTQ1?
LP875610RNFTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP875610RNFTQ1 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 LP875610RNFTQ1?
For technical support, including LP875610RNFTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP875610RNFTQ1 requirements.
6.How does Aetrix verify that LP875610RNFTQ1 is sourced from the original manufacturer or authorized distributors?
All LP875610RNFTQ1 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 LP875610RNFTQ1 meets industry standards.
7.What is the process for return or replacement of LP875610RNFTQ1?
All LP875610RNFTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP875610RNFTQ1, 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 LP875610RNFTQ1 part is unused and in its original packaging.
Return procedure for LP875610RNFTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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