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Texas Instruments LP875230CRNFRQ1
- Part No.:
- LP875230CRNFRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 26-PowerVFQFN
- Datasheet:
-
LP875230CRNFRQ1.pdf
- Description:
- IC REG BUCK ADJ TRPL 26VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
LP875230CRNFRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive buck converter IC with four integrated power stages configured as one 2-phase and two 1-phase outputs, delivering up to 8 A total (4 A per 2-phase rail, 2 A per 1-phase rail), 0.6–3.36 V output voltage range, and 2 MHz switching frequency for infotainment and ADAS domain controllers.
For engineers reviewing the LP875230CRNFRQ1 datasheet, LP875230CRNFRQ1 pinout, LP875230CRNFRQ1 application, or LP875230CRNFRQ1 equivalent, this page delivers verified electrical specs, validated multiphase configuration behavior, confirmed I²C interface timing (up to 3.4 MHz), and real-world thermal performance (RθJA = 34.6°C/W) - all critical for automotive power-rail consolidation and ECU-level power sequencing.
Technical Context
The LP875230CRNFRQ1 implements automatic PWM-to-PFM mode transition at 200 mA (PWM→PFM) and 600 mA (PFM→PWM), with programmable phase add/shed thresholds (e.g., 1→2-phase at 1 A, 4→3-phase at 2.4 A). Its four independent buck cores support remote differential sensing on FB_Bx pins to compensate IR drop at point-of-load.
It integrates a 2 MHz PLL-controlled switching clock with spread-spectrum and external clock synchronization capability (1–24 MHz CLKIN), plus load-current measurement without external sense resistors (20 mA LSB, <10% accuracy above 1 A), enabling precise closed-loop power management in safety-critical automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | One 2-phase + two 1-phase rails - enables independent voltage domains for SoC core, I/O, and auxiliary logic |
| Max Output Current | 8 A total (4 A on 2-phase rail, 2 A per 1-phase rail) - defined by VIN ≥3 V; derates to 6 A at 2.8–3 V input |
| 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 DDR memory, GPU, and MCU core supply requirements |
| Switching Frequency | 1.8–2.2 MHz (typ. 2 MHz) - enables compact 0.47 µH inductors and reduces EMI fundamental below 2.5 MHz |
| I²C Interface Speed | Up to 3.4 MHz (High-Speed mode) - allows rapid register access for dynamic voltage scaling during processor state transitions |
| Thermal Resistance | RθJA = 34.6°C/W (VQFN-HR 26-pin) - validated for 125°C ambient operation with standard 2-layer PCB layout |
Pinout & Package
VQFN-HR (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_B3 | Buck switch node (x4) | Direct connection points to external inductors; each drives one phase of the configured output topology |
| FB_B0–FB_B3 | Output voltage feedback (x4) | Supports remote differential sensing - FB_B1/FB_B2 also serve as negative feedback for adjacent rails to reduce board routing complexity |
| VIN_B0–VIN_B3 | Per-phase input power (x4) | Independent inputs must be externally tied together and locally bypassed - prevents internal coupling between phases |
| EN1/EN2/EN3 | Configurable enable/GPIO (x3) | Programmable as buck enable signals or GPIOs to sequence external regulators, load switches, or processor reset lines |
| SDA/SCL | I²C bidirectional data/clock | Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) modes - no external level shifters required |
| PGOOD | Power-good status output | Open-drain signal with programmable debounce (4 µs to 13 ms); monitors ±8–20 mV deviation from target VOUT during ramp |
| nINT | Interrupt request output | Active-low open-drain flag for overtemperature warning, PGOOD fault, or register-access completion - masks configurable via I²C |
Key Features
| Feature | Design Value |
|---|---|
| Configurable multiphase topology | One 2-phase + two 1-phase outputs - eliminates need for multiple discrete DC/DC ICs in domain controller power trees |
| Integrated current measurement | 20 mA LSB resolution, <10% error above 1 A - removes external sense resistors and associated board area/power loss |
| Programmable soft-start slew rate | Fixed 0.47–10 mV/µs range (configurable per rail) - prevents in-rush current and overshoot during cold-boot or voltage transitions |
| Automated phase management | Phase add at 1/2/3 A, phase shed at 0.7/1.5/2.4 A - maintains >80% efficiency across 1 mA–8 A load range without firmware intervention |
| Automotive-grade protection | Overvoltage (±50 mV), undervoltage (−40 mV), overtemperature (140°C shutdown), and short-circuit detection - meets ISO 26262 ASIL-B readiness requirements |
Applications
| Infotainment Head Unit Power | Digital Cluster Display Supply |
|---|---|
Use Scenario: Powers application processor, DDR memory, and display interface in 12-V automotive head units with thermal constraints. IC Role / Device Role / Timing Role: Provides three independent regulated rails: 1.1 V (2-phase) for CPU core, 1.8 V (1-phase) for DDR, and 3.3 V (1-phase) for display bridge. Use Value: Phase interleaving reduces input ripple by 50% vs. single-phase, lowering bulk capacitor count and enabling smaller 125°C-rated ceramic capacitors. | Use Scenario: Supplies graphics controller, touch controller, and backlight driver in digital instrument clusters with strict EMI limits. IC Role / Device Role / Timing Role: Delivers synchronized 1.2 V (2-phase), 1.8 V (1-phase), and 5 V (1-phase via external LDO) with coordinated startup sequencing. Use Value: Programmable PGOOD delay (4 µs–13 ms) ensures clean power-up order - CPU rail stable before enabling display interface logic. |
| Radar ECU Core Voltage | ADAS Camera Module Power |
Use Scenario: Generates low-noise 1.0 V core supply for 77-GHz radar SoCs operating in engine bay environments. IC Role / Device Role / Timing Role: 2-phase rail minimizes output ripple (<6 mVp-p in PWM mode), while spread-spectrum clocking suppresses narrowband EMI peaks near IF frequencies. Use Value: Remote sensing on FB_B0/FB_B1 compensates for 150 mΩ PCB trace resistance, maintaining ±1% output accuracy at SoC package ball. | Use Scenario: Powers image sensor, ISP, and MIPI PHY in rear-view and surround-view camera modules with space-constrained flex PCB layouts. IC Role / Device Role / Timing Role: Configures one 1-phase rail at 2.8 V for sensor analog supply and another at 1.2 V for digital core, both with independent enable control. Use Value: EN1/EN2/EN3 GPIOs directly drive external load switches - eliminates need for discrete logic to manage power-up timing across multiple voltage domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP875220CRNFRQ1 | One 3-phase + one 1-phase output (9 A max), different phase allocation logic and FB pin mapping | Better suited for SoC + memory + I/O partitioning where 3-phase rail dominates current demand | Select when primary load requires >4 A continuous current on a single rail |
| LP875240CRNFRQ1 | Four independent 1-phase outputs (4 × 2 A), no phase-interleaved ripple reduction or current sharing | Preferred for fully isolated voltage domains requiring independent sequencing, monitoring, and fault handling per rail | Select when design mandates complete rail independence and no shared thermal or control coupling |
Compared with LP875220CRNFRQ1 and LP875240CRNFRQ1, the LP875230CRNFRQ1 uniquely balances current capacity and isolation: its 2-phase rail delivers higher efficiency at mid-load (4–6 A) than four 1-phase rails, while offering more flexible partitioning than a dominant 3-phase rail - ideal for mixed-core domain controllers.
Availability
LP875230CRNFRQ1 is available at Aetrix Electronics and suitable for automotive infotainment head units, digital instrument clusters, and ADAS radar ECUs requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for LP875230CRNFRQ1 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 leadership in automotive power management and functional-safety-certified ICs.
The LP8752x-Q1 product line was designed specifically for automotive domain controllers, integrating multiphase buck regulation, I²C configurability, and ASIL-ready protection to replace discrete power solutions in next-generation E/E architectures.
FAQ
What is the maximum output current supported by the LP875230CRNFRQ1 in its default 2-phase + two 1-phase configuration?
The LP875230CRNFRQ1 supports up to 8 A total output current: 4 A on the 2-phase rail (2 A per phase) and 2 A on each of the two 1-phase rails. This assumes VIN ≥3 V; at 2.8–3 V input, the 2-phase rail derates to 3 A and each 1-phase rail to 1.5 A per the datasheet's IOUT specifications.
Does the LP875230CRNFRQ1 support external clock synchronization, and what frequency range is acceptable?
Yes, the LP875230CRNFRQ1 supports external clock synchronization via the CLKIN pin, accepting input frequencies from 1 MHz to 24 MHz with ±30% accuracy tolerance. The device detects missing clocks within 1.8 µs and transitions to internal oscillator within 600 µs after valid clock reacquisition - critical for EMI-sensitive radar and camera applications.
How does the LP875230CRNFRQ1 implement remote voltage sensing, and which pins are involved?
The LP875230CRNFRQ1 implements remote differential sensing using dedicated FB_Bx pins: FB_B0/FB_B1 for BUCK0, FB_B2/FB_B1 (shared negative) for BUCK2, and FB_B3/FB_B2 (shared negative) for BUCK3. This compensates for IR drop between regulator output and point-of-load, maintaining ±1% DC accuracy even with 150 mΩ PCB trace resistance.
Can the EN1, EN2, and EN3 pins of the LP875230CRNFRQ1 be used as general-purpose I/Os, and what are their electrical characteristics?
Yes, EN1, EN2, and EN3 on the LP875230CRNFRQ1 are configurable as GPIOs with push-pull or open-drain output, 2 mA sink capability, and 0.4 V VOL. As inputs, they accept 0.4 V VIL and 1.2 V VIH thresholds with 10–200 mV hysteresis. Each has a 500 kΩ internal pulldown (ENx_PD = 1h), enabling direct connection to microcontroller GPIOs without external resistors.
What protection features are integrated into the LP875230CRNFRQ1, and how are they triggered?
The LP875230CRNFRQ1 integrates overtemperature shutdown (140–160°C), thermal warning (115–147°C, configurable), VANA overvoltage (5.6–6.1 V), undervoltage lockout (2.51–2.75 V), output overvoltage (±50 mV), and undervoltage (−40 mV). All protections generate nINT alerts and can be masked via I²C registers; shutdown events force immediate rail disable and require NRST assertion to recover.
LP875230CRNFRQ1 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:
- 3
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 3.36V
- Current - Output:
- 4A, 4A, 8A
- 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)
LP875230CRNFRQ1 FAQ
1.How can I place an order for LP875230CRNFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP875230CRNFRQ1 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 LP875230CRNFRQ1 reliable?
The price and inventory of LP875230CRNFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP875230CRNFRQ1 is usually 5 days.
3.What payment methods are accepted for LP875230CRNFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP875230CRNFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP875230CRNFRQ1?
LP875230CRNFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP875230CRNFRQ1 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 LP875230CRNFRQ1?
For technical support, including LP875230CRNFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP875230CRNFRQ1 requirements.
6.How does Aetrix verify that LP875230CRNFRQ1 is sourced from the original manufacturer or authorized distributors?
All LP875230CRNFRQ1 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 LP875230CRNFRQ1 meets industry standards.
7.What is the process for return or replacement of LP875230CRNFRQ1?
All LP875230CRNFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP875230CRNFRQ1, 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 LP875230CRNFRQ1 part is unused and in its original packaging.
Return procedure for LP875230CRNFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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