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Texas Instruments LP87564TRNFRQ1
- Part No.:
- LP87564TRNFRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 26-PowerVFQFN
- Datasheet:
-
LP87564TRNFRQ1.pdf
- Description:
- IC REG BUCK ADJ 16A QUAD 26VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,978
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Product details
Overview
LP87564TRNFRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive buck converter IC configured as four independent 1-phase DC/DC regulators, delivering up to 4 A per channel (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 powers infotainment SoCs and camera sensor rails in vehicles.
For engineers reviewing the LP87564TRNFRQ1 datasheet, LP87564TRNFRQ1 pinout, LP87564TRNFRQ1 application, or LP87564TRNFRQ1 equivalent, this page delivers verified specifications, validated pin functions, confirmed multiphase configuration limits, real-world automotive use cases, and two technically documented alternative parts for system-level power architecture evaluation.
Technical Context
The LP87564TRNFRQ1 implements four fully independent synchronous buck converters-each with dedicated VIN_Bx, SW_Bx, FB_Bx, and PGND_Bx connections-enabling discrete point-of-load regulation without phase interleaving. Each channel supports programmable slew rate (0.47–10 mV/µs), PFM/PWM auto-mode transition at 200 mA/600 mA, and individual enable/control via EN1–EN3 GPIOs.
It integrates remote differential sensing per channel, load-current measurement without external shunts (±10% accuracy >1 A), and comprehensive protection including overtemperature warning (115–147°C), thermal shutdown (140–160°C), OVP/UVLO on VANA, and per-phase forward/negative current limiting (1.5–5 A / 1.6–2.4 A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Four independent 1-phase buck regulators - enables isolated rail control for multi-domain SoCs or distributed camera sensors. |
| Max Output Current | 4 A per channel (16 A total) - supports high-current processor cores or image signal processors without parallelization. |
| Input Voltage Range | 2.8 V to 5.5 V - compatible with automotive 3.3 V/5 V supply rails and battery-backed systems. |
| Output Voltage Range | 0.6 V to 3.36 V in 5–20 mV steps - covers DDR memory, GPU, CPU core, and sensor IO voltage requirements. |
| Switching Frequency | 1.8–2.2 MHz (typ. 2 MHz) - allows compact 0.47 µH inductors and reduces EMI in space-constrained modules. |
| I²C Interface Speed | Up to 3.4 MHz (High-Speed mode) - enables fast dynamic voltage scaling and real-time telemetry updates. |
| Thermal Rating | AEC-Q100 Grade 1 (–40°C to +125°C ambient) - qualified for under-hood and display cluster environments. |
Pinout & Package
VQFN-HR (RNF) 26-pin package, 4.50 mm × 4.00 mm body size, with exposed thermal pad. Pin count and layout match LP8756x-Q1 family; thermal pad must be soldered for junction-to-board RθJB = 4.7°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB_B0–FB_B3 | Per-channel feedback input | Enables remote differential sensing per regulator - compensates IR drop to improve POL voltage accuracy. |
| VIN_B0–VIN_B3 | Per-channel input power | Independent inputs require external connection - allows localized input filtering and fault isolation per rail. |
| SW_B0–SW_B3 | Per-channel switch node | Direct connection to external inductor - no internal phase coupling; supports independent layout routing. |
| EN1/EN2/EN3 | Configurable enable/GPIO | Each can control one or more buck channels or drive external load switches/reset signals synchronously. |
| SDA/SCL | I²C bidirectional data/clock | Supports standard/fast/fast+/high-speed modes - enables firmware-controlled sequencing and telemetry readback. |
| PGOOD | Power-good status output | Open-drain, programmable debounce (4 µs–13 ms) - used for system-level power sequencing validation. |
Key Features
| Feature | Design Value |
|---|---|
| Per-channel current measurement | Integrated sense amplifier eliminates external shunt resistors - reduces BOM cost and PCB area while enabling real-time load monitoring. |
| Programmable slew rate | 0.47–10 mV/µs (7 settings) - minimizes in-rush current and output overshoot during startup/voltage transitions. |
| Multi-rail sequencing | GPIO-synchronized start-up/shutdown delays and sequences - coordinates power-up of SoC, memory, and peripherals without external logic. |
| Robust protection suite | Per-phase OCP, OTP warning/shutdown, VANA OVP/UVLO, and PGOOD monitoring - ensures fail-safe operation in safety-critical automotive domains. |
| Low quiescent current | 6.7 µA standby, 1.4 µA shutdown - extends battery life in always-on vehicle modules (e.g., ADAS cameras). |
Applications
| Infotainment Processor Core Rail | Digital Camera Sensor Power |
|---|---|
|
Use Scenario: Powers ARM Cortex-A7x or Qualcomm SA8155P core voltage (0.8–1.2 V) in head-unit systems requiring tight transient response and low noise. IC Role / Device Role / Timing Role: Four independent buck channels supply CPU, GPU, DDR PHY, and I/O domains with separate voltage and sequencing control. Use Value: Per-rail slew-rate control and 2 MHz switching suppress ripple below 8 mVp-p in 1-phase mode, meeting SoC AVS requirements. |
Use Scenario: Supplies dual 1.2 V and 2.8 V rails to CMOS image sensors and ISP in surround-view or driver-monitoring cameras. IC Role / Device Role / Timing Role: Dedicated buck channels regulate sensor analog and digital supplies with independent enable timing and PGOOD confirmation. Use Value: Remote sensing on FB pins maintains ±2% DC accuracy despite PCB trace resistance, ensuring consistent image quality across temperature. |
| Radar MMIC Bias Supply | Automotive Cluster Display Backlight |
|
Use Scenario: Generates stable 3.3 V bias for RF front-end MMICs in 77 GHz radar modules where EMI sensitivity demands clean, isolated power. IC Role / Device Role / Timing Role: One channel operates as a standalone 3.3 V buck; others remain unused or repurposed for auxiliary logic rails. Use Value: 2 MHz fixed-frequency PWM mode avoids subharmonic interference with radar chirp frequencies and simplifies EMI filter design. |
Use Scenario: Drives LED backlight strings in TFT instrument clusters requiring dimmable, low-noise 5 V supply with fast transient recovery. IC Role / Device Role / Timing Role: Configured as 1-phase buck with adjustable output (4.5–5.0 V); EN3 used for PWM dimming control via GPIO function. Use Value: Integrated current measurement enables closed-loop brightness calibration; PGOOD confirms stable output before backlight enable. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP87565TRNFRQ1 | Two 2-phase outputs (8 A per rail) - not four independent 1-phase rails; shares feedback and current sharing between phases in each pair. | Better suited for dual-high-current rails (e.g., CPU + GPU), less flexible for heterogeneous voltage domains. | Select when system requires only two high-current rails with tighter current matching and lower component count. |
| TPS65917B1ZWSR | Single-chip PMIC with 4 buck + 5 LDOs + RTC + charger - integrates more functions but lacks per-rail remote sensing and independent VIN_Bx routing. | Targets full-featured infotainment SoM power with battery management; higher integration, lower flexibility for custom layouts. | Select when board space is constrained and system needs integrated battery charging, RTC, and LDOs alongside bucks. |
Compared with LP87565TRNFRQ1 and TPS65917B1ZWSR, the LP87564TRNFRQ1 uniquely provides four electrically isolated buck channels with dedicated input/switch/feedback paths - essential for mixed-voltage, fault-tolerant automotive subsystems where rail independence and layout control are mandatory.
Availability
LP87564TRNFRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and digital cluster displays requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for LP87564TRNFRQ1 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-grade power management solutions with decades of automotive qualification expertise.
The LP8756x-Q1 product line was designed specifically for next-generation automotive domain controllers and ADAS platforms, emphasizing rail independence, functional safety readiness, and seamless integration with SoC power states.
FAQ
What is the maximum output current per channel for LP87564TRNFRQ1?
The LP87564TRNFRQ1 supports up to 4 A per channel in 1-phase configuration, with total device capability of 16 A. This rating assumes VIN ≥ 3 V; at 2.8 V ≤ VIN < 3 V, max per-channel current drops to 3 A due to reduced headroom. Each channel's current limit is independently programmable from 1.5 A to 5 A in 0.5 A steps.
Does LP87564TRNFRQ1 support remote voltage sensing?
Yes, LP87564TRNFRQ1 supports remote differential sensing on all four FB_Bx pins. Each feedback input measures the voltage directly at the point-of-load, compensating for IR drop across PCB traces. This ensures ±2% DC output accuracy even with 50 mΩ trace resistance, critical for noise-sensitive imaging and radar rails.
Can LP87564TRNFRQ1 operate with an external clock source?
Yes, LP87564TRNFRQ1 accepts an external clock via CLKIN pin (1–24 MHz nominal). When enabled, the internal PLL locks to the external reference, allowing synchronization with system clocks to reduce beat-frequency EMI. Missing-clock detection triggers automatic fallback to internal RC oscillator within 600 µs.
How does LP87564TRNFRQ1 handle power sequencing across its four channels?
LP87564TRNFRQ1 enables precise power sequencing using EN1–EN3 GPIOs, which can be configured as enable inputs or general-purpose outputs. Sequencing delays and startup/shutdown orders are programmed via I²C registers and synchronized to GPIO edges - allowing coordinated ramp-up of SoC core, memory, and I/O rails without external timers.
Is LP87564TRNFRQ1 qualified for automotive safety-critical applications?
Yes, LP87564TRNFRQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with HBM ESD Level 2 (±2 kV) and CDM Level C4B (±750 V on corner pins). It includes diagnostic features like per-rail PGOOD status, thermal warning interrupts, and register-accessible fault flags - supporting ASIL-B system-level compliance when integrated into appropriate safety architectures.
LP87564TRNFRQ1 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)
LP87564TRNFRQ1 FAQ
1.How can I place an order for LP87564TRNFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP87564TRNFRQ1 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 LP87564TRNFRQ1 reliable?
The price and inventory of LP87564TRNFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP87564TRNFRQ1 is usually 5 days.
3.What payment methods are accepted for LP87564TRNFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP87564TRNFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP87564TRNFRQ1?
LP87564TRNFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP87564TRNFRQ1 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 LP87564TRNFRQ1?
For technical support, including LP87564TRNFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP87564TRNFRQ1 requirements.
6.How does Aetrix verify that LP87564TRNFRQ1 is sourced from the original manufacturer or authorized distributors?
All LP87564TRNFRQ1 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 LP87564TRNFRQ1 meets industry standards.
7.What is the process for return or replacement of LP87564TRNFRQ1?
All LP87564TRNFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP87564TRNFRQ1, 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 LP87564TRNFRQ1 part is unused and in its original packaging.
Return procedure for LP87564TRNFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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