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Texas Instruments LP87565CRNFRQ1
- Part No.:
- LP87565CRNFRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 26-PowerVFQFN
- Datasheet:
-
LP87565CRNFRQ1.pdf
- Description:
- IC REG BUCK ADJ 16A QUAD 26VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,942
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Product details
Overview
LP87565CRNFRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive buck converter IC configured as two independent 2-phase outputs, delivering up to 8 A per output (16 A total), with 0.6 V–3.36 V programmable output voltage, 2 MHz switching frequency, and I²C interface supporting up to 3.4 MHz. It serves as a multi-phase power management solution for high-current processor rails in infotainment and ADAS camera modules.
For engineers reviewing the LP87565CRNFRQ1 datasheet, LP87565CRNFRQ1 pinout, LP87565CRNFRQ1 application, or LP87565CRNFRQ1 equivalent, key selection criteria include its dual 2-phase topology, remote differential sensing capability, programmable slew rate (0.47–10 mV/µs), integrated current measurement, and automotive-grade thermal protection (140°C shutdown).
Technical Context
The LP87565CRNFRQ1 implements four synchronous buck converter cores arranged exclusively as two independent 2-phase outputs-enabling balanced current sharing, reduced output ripple, and improved transient response versus single-phase equivalents. Each 2-phase rail supports remote differential voltage sensing via dedicated FB pins to compensate for PCB IR drop at point-of-load.
Its digital control architecture includes auto PWM/PFM mode transition, phase shedding (down to 1-phase per rail), programmable start-up/shutdown sequencing with GPIO coordination, and real-time load current monitoring without external sense resistors. The device synchronizes to internal RC oscillator or external clock (1–24 MHz) and supports spread-spectrum operation to reduce EMI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Two independent 2-phase buck outputs (not 4-phase, 3+1, or 4×1); enables dual high-current rails with interleaved timing. |
| Max Output Current | 8 A per 2-phase rail (16 A total); limited by thermal design and input voltage (≥3 V required for full rating). |
| Input Voltage Range | 2.8 V to 5.5 V; compatible with automotive battery-supplied 3.3 V/5 V intermediate rails. |
| Output Voltage Range | 0.6 V to 3.36 V in 5–20 mV steps; supports core voltages for SoCs, FPGAs, and image signal processors. |
| Switching Frequency | 1.8–2.2 MHz (typ. 2 MHz); enables use of compact 0.47 µH inductors and low-ESR ceramic capacitors. |
| I²C Interface Speed | Up to 3.4 MHz (High-Speed mode); allows rapid register access for dynamic voltage scaling and fault logging. |
| Thermal Protection | Overtemperature warning at 127–147°C (configurable), shutdown at 140–160°C with 20°C hysteresis. |
Pinout & Package
VQFN-HR (RNF) 26-pin package, 4.50 mm × 4.00 mm body size, with exposed thermal pad for enhanced heat dissipation in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW_B0, SW_B1, SW_B2, SW_B3 | Buck switch nodes | Four independent high-side/low-side switch connections; SW_B0/SW_B1 form first 2-phase rail, SW_B2/SW_B3 second rail. |
| FB_B0–FB_B3 | Differential feedback inputs | Each pair (e.g., FB_B0/FB_B1) enables remote sensing for one 2-phase rail; supports Kelvin connection to POL. |
| VIN_B0–VIN_B3 | Independent input power pins | Must be externally tied together and locally bypassed; prevents internal coupling between phases. |
| EN1, EN2, EN3 | Configurable enable/GPIO pins | Control startup sequencing of individual rails or act as general-purpose I/O for external regulator coordination. |
| SDA, SCL, nINT, NRST | I²C interface and system control | Support standard/fast/fast+/high-speed I²C; nINT signals faults (OVP, UVLO, thermal); NRST resets internal state. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable dual 2-phase topology | Enables two independent high-current rails (e.g., CPU core + GPU or sensor array + ISP) with phase interleaving for lower input/output ripple. |
| Programmable output slew rate | 0.47–10 mV/µs range (7 settings); minimizes in-rush current and output overshoot during voltage transitions. |
| Integrated current measurement | 20 mA LSB resolution, <10% accuracy above 1 A; eliminates need for external sense resistors and associated board area/power loss. |
| Remote differential voltage sensing | Compensates for IR drop between regulator output and point-of-load, maintaining ±0.4% DC accuracy under load variation. |
| Automated phase add/shed | Transitions between 1- and 2-phase operation per rail based on load (e.g., shed at 0.7 A, add at 1 A); maximizes efficiency across light-to-heavy loads. |
Applications
| Infotainment Processor Core Rail | Radar SoC Power Delivery |
|---|---|
Use Scenario: Powers ARM-based application processors in automotive head units requiring dynamic voltage scaling and tight transient response. IC Role / Device Role / Timing Role: Dual 2-phase buck controller providing two independent, sequenced 0.8 V/1.1 V rails with PGOOD monitoring and interrupt-driven fault reporting. Use Value: Achieves <±2% output accuracy under 8-A step load with <±40 mV deviation, enabling reliable DVFS without external compensation. |
Use Scenario: Supplies power to millimeter-wave radar transceivers with strict low-noise and fast transient requirements. IC Role / Device Role / Timing Role: Delivers clean, low-ripple 1.2 V and 1.8 V rails using interleaved 2-phase operation and spread-spectrum switching to minimize EMI near RF front-end. Use Value: Reduces output ripple to ≤6 mVp-p in PWM mode, meeting radar IC noise floor specifications without additional filtering. |
| ADAS Camera Image Sensor Array | Automotive Cluster Display Controller |
Use Scenario: Powers high-resolution CMOS image sensors and companion ISPs in surround-view camera modules. IC Role / Device Role / Timing Role: Generates synchronized 1.2 V (sensor analog) and 1.8 V (ISP digital) rails with programmable startup delay and GPIO-controlled reset sequencing. Use Value: Enables precise power-on timing alignment between sensor and ISP, eliminating frame corruption during boot. |
Use Scenario: Supplies multiple voltage domains (1.1 V core, 1.8 V I/O, 3.3 V interface) to TFT-LCD display controllers in digital instrument clusters. IC Role / Device Role / Timing Role: Uses EN1/EN2/EN3 to sequence rail activation and coordinate external LDOs via GPIO outputs, ensuring proper power-up order. Use Value: Prevents latch-up and initialization failures by enforcing strict <10-ms inter-rail delays with hardware-level control. |
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 |
|---|---|---|---|
| LP87562CRNFRQ1 | Configured as one 3-phase + one 1-phase output (12 A + 4 A); different phase distribution and current balancing logic. | Suitable for asymmetric loads (e.g., main SoC + auxiliary peripheral), not dual symmetric rails. | Select when system requires unequal current distribution rather than two matched 8-A rails. |
| LP87564CRNFRQ1 | Four independent 1-phase outputs (4 × 4 A); no phase interleaving or current sharing between channels. | Better for isolated, low-interaction domains (e.g., separate memory, PHY, I/O, core rails) with independent control. | Choose when flexibility in per-rail configuration outweighs ripple/noise benefits of interleaving. |
Compared with LP87562CRNFRQ1 and LP87564CRNFRQ1, the LP87565CRNFRQ1 uniquely delivers two tightly coupled 2-phase rails-providing superior ripple cancellation, higher effective current density per rail, and simplified layout for symmetric high-current applications like dual-core processors or stereo radar.
Availability
LP87565CRNFRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera, and digital cluster power applications requiring stable component supply, AEC-Q100 compliance, and long-term production support.
Supply support for LP87565CRNFRQ1 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 power management and functional safety design.
The LP8756x-Q1 product line was engineered specifically for automotive power delivery to advanced driver-assistance systems and infotainment platforms, emphasizing high efficiency, robust fault handling, and seamless integration with vehicle microcontrollers via I²C.
FAQ
What is the exact output configuration supported by the LP87565CRNFRQ1?
The LP87565CRNFRQ1 is factory-configured exclusively for two independent 2-phase buck outputs-SW_B0/SW_B1 form the first rail, SW_B2/SW_B3 the second. It does not support 4-phase, 3+1, or 4×1 configurations. This fixed topology enables optimized current sharing and ripple cancellation within each rail, verified in TI's SNVSB22 datasheet Section 5 (Device Comparison Table).
Does the LP87565CRNFRQ1 support remote differential voltage sensing, and how is it implemented?
Yes, the LP87565CRNFRQ1 supports remote differential sensing on both 2-phase rails using FB_B0/FB_B1 for rail 1 and FB_B2/FB_B3 for rail 2. Each pair connects directly to the point-of-load to compensate for PCB trace resistance, maintaining ±0.4% DC output accuracy under varying load conditions as specified in Electrical Characteristics Table 7.5.
What are the programmable output voltage limits and step sizes for the LP87565CRNFRQ1?
The LP87565CRNFRQ1 supports 0.6 V to 3.36 V output voltage with three step-size ranges: 10 mV (0.6–0.73 V), 5 mV (0.73–1.4 V), and 20 mV (1.4–3.36 V). These values are defined in the Electrical Characteristics table (Section 7.5) and are set via I²C registers VOUT_Bx[7:0], ensuring precise core voltage targeting for automotive SoCs.
How does the LP87565CRNFRQ1 handle thermal protection, and what are the trip thresholds?
The LP87565CRNFRQ1 provides configurable thermal warning (115–147°C depending on TDIE_WARN_LEVEL setting) and hard thermal shutdown (140–160°C). Both features include 20°C hysteresis to prevent oscillation. These thresholds are silicon-characterized and documented in Section 7.5 (Electrical Characteristics) of the SNVSB22 datasheet.
Can the LP87565CRNFRQ1 measure load current without external sense resistors, and what is its accuracy?
Yes, the LP87565CRNFRQ1 integrates on-die current measurement with 20 mA LSB resolution and <10% accuracy for loads >1 A. It reports real-time current via I²C register IOUT_Bx[11:0], eliminating external sense resistors and their associated power loss and board space-confirmed in Section 7.5 (LOAD CURRENT MEASUREMENT).
LP87565CRNFRQ1 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:
- 2
- 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
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 26-VQFN-HR (4.5x4)
LP87565CRNFRQ1 FAQ
1.How can I place an order for LP87565CRNFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP87565CRNFRQ1 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 LP87565CRNFRQ1 reliable?
The price and inventory of LP87565CRNFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP87565CRNFRQ1 is usually 5 days.
3.What payment methods are accepted for LP87565CRNFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP87565CRNFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP87565CRNFRQ1?
LP87565CRNFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP87565CRNFRQ1 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 LP87565CRNFRQ1?
For technical support, including LP87565CRNFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP87565CRNFRQ1 requirements.
6.How does Aetrix verify that LP87565CRNFRQ1 is sourced from the original manufacturer or authorized distributors?
All LP87565CRNFRQ1 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 LP87565CRNFRQ1 meets industry standards.
7.What is the process for return or replacement of LP87565CRNFRQ1?
All LP87565CRNFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP87565CRNFRQ1, 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 LP87565CRNFRQ1 part is unused and in its original packaging.
Return procedure for LP87565CRNFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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