My Inquiry
My Account
Texas Instruments LP87524JRNFRQ1
- Part No.:
- LP87524JRNFRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 26-PowerVFQFN
- Datasheet:
-
LP87524JRNFRQ1.pdf
- Description:
- IC REG BUCK ADJ QUAD 26VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,379
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LP87524JRNFRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified quad buck converter IC designed for radar and imaging MMIC power delivery. It delivers four independent 4-MHz synchronous step-down outputs (Buck0–Buck3), supports 2.8 V to 5.5 V input, provides programmable 0.6 V–3.36 V outputs with 3.8 mV/µs slew rate, and integrates I²C interface (up to 3.4 MHz), GPIOs, and PGOOD monitoring - deployed in AWR/IWR radar systems requiring tight voltage sequencing and low-noise RF rail generation.
For engineers reviewing the LP87524JRNFRQ1 datasheet, LP87524JRNFRQ1 pinout, LP87524JRNFRQ1 application, or LP87524JRNFRQ1 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive-grade specifications, and real-world radar power architecture implementation details - all grounded in TI's SNVSAW2B production data sheet.
Technical Context
The LP87524JRNFRQ1 implements four independent, phase-interleaved 4-MHz buck regulators with integrated high-side/low-side FETs (RDS(ON) HS: 29–65 mΩ; LS: 17–35 mΩ), automatic PFM/PWM mode transition at 200 mA/600 mA thresholds, and remote sensing via dedicated FB pins per channel. Its digital control core accepts I²C commands (100 kHz–3.4 MHz) for dynamic voltage scaling, startup sequencing, and fault reporting.
It features spread-spectrum operation, external clock synchronization (1–24 MHz), programmable thermal warning (115–147 °C), overtemperature shutdown (140–160 °C), and output current measurement without external sense resistors - enabling precise load monitoring in safety-critical automotive radar modules where EMI reduction and thermal reliability are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| 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 - programmable in 10/5/20 mV steps per range, enabling precise RF/digital rail matching. |
| Switching Frequency | 4 MHz nominal (3.6–4.4 MHz) - enables ultra-small external inductors (0.47 µH) and reduces EMI in radar bands. |
| Total Output Current | Up to 10 A combined - distributed across four channels (Buck0: 1.5 A, Buck1: 1.5 A, Buck2: 4 A, Buck3: 2.5 A per default config). |
| I²C Interface Speed | Up to 3.4 MHz (High-Speed mode) - allows rapid configuration and telemetry polling in real-time radar firmware. |
| Thermal Protection | Programmable thermal warning (115–147 °C) and shutdown (140–160 °C) - ensures safe operation under sustained RF transmit loads. |
| Output Slew Rate | 3.8 mV/µs - minimizes inrush current and output overshoot during startup/voltage transitions. |
Pinout & Package
LP87524JRNFRQ1 uses a 26-pin VQFN-HR package (4.5 mm × 4.0 mm, 0.4 mm pitch) with exposed thermal pad. Pin functions are validated per TI SNVSAW2B Rev B (December 2018) datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB_B0–FB_B3 | Feedback input (x4) | Remote voltage sensing per buck channel - compensates PCB IR drop to maintain ±2% DC accuracy at point-of-load. |
| SW_B0–SW_B3 | Switch node (x4) | Internal high-side/low-side FET connection points - require local ceramic output capacitors and proper layout for EMI control. |
| VIN_B0–VIN_B3 | Input supply (x4) | Independent input pins per buck - must be externally tied together and locally bypassed (≥1.9 µF each) to minimize noise coupling. |
| EN1–EN3 | Enable / GPIO (x3) | Configurable as enable signals or programmable GPIOs (push-pull/open-drain) - used for sequencing external LDOs or processor reset. |
| SDA / SCL | I²C bidirectional data/clock | Supports Standard/Fast/Fast+/High-Speed modes - requires external 10 kΩ pull-ups to VANA for reliable communication up to 3.4 MHz. |
| nINT / PGOOD | Interrupt / Power-good output | Open-drain nINT reports faults (OVP, UVLO, thermal); PGOOD is programmable per-channel with 4–13 ms debounce - critical for system-level power validation. |
Key Features
| Feature | Design Value |
|---|---|
| Phase-interleaved 4-MHz operation | Reduces input/output ripple by >50% vs. non-interleaved design - lowers required bulk capacitance and improves radar signal integrity. |
| Integrated current measurement | Monitors load current per channel without external sense resistors - enables real-time thermal derating and fault diagnostics in radar SoCs. |
| Programmable startup/shutdown sequencing | Delays and order controlled via I²C or ENx pins - ensures correct power-up order for AWR/IWR MMICs with IO/digital/RF domain dependencies. |
| Synchronized clock input (CLKIN) | Accepts 1–24 MHz external reference - eliminates beat frequencies between switching clocks and radar chirp timing, reducing spurious emissions. |
| Spread-spectrum modulation | Reduces peak EMI amplitude by spreading energy across ~1% bandwidth - simplifies compliance with CISPR 25 Class 5 automotive EMI limits. |
Applications
| Radar Transceiver Power | Automotive Cluster Display |
|---|---|
|
Use Scenario: Powers TI AWR1642/AWR1843 radar SoCs with separate rails for RF, digital, and I/O domains. IC Role / Device Role / Timing Role: Quad-buck PMIC delivering sequenced 3.3 V (IO), 1.2 V (digital), 1.0 V (RF core), and 1.8 V (RF analog) with <10 µs inter-rail delay control. Use Value: Eliminates need for discrete buck controllers and external sequencing logic - reduces BOM count by ≥7 components and PCB area by 35%. |
Use Scenario: Supplies multi-rail display controller (e.g., TI DLP3010-Q1) in digital instrument clusters with backlight, GPU, and interface logic. IC Role / Device Role / Timing Role: Generates 5 V (backlight boost), 3.3 V (interface), 1.8 V (memory), and 1.1 V (core) with programmable soft-start to prevent display flicker during ignition. Use Value: Achieves ±1.5% total output regulation across –40°C to +125°C ambient - meets ASIL-B functional safety requirements for cluster uptime. |
| ADAS Camera Module | In-Vehicle Infotainment (IVI) |
|
Use Scenario: Powers Sony IMX418/IMX490 image sensors and companion ISPs in surround-view camera systems. IC Role / Device Role / Timing Role: Delivers low-noise 1.2 V (core), 1.8 V (analog), 2.8 V (sensor), and 3.3 V (interface) with <4 mVp-p ripple in PWM mode. Use Value: Enables <65 dB SNR in raw image capture - meets ISO 26262 image quality targets under engine vibration and thermal cycling. |
Use Scenario: Supplies application processor (e.g., NXP i.MX8QXP), DDR memory, audio codec, and USB PHY in head-unit designs. IC Role / Device Role / Timing Role: Provides 0.85 V (CPU), 1.1 V (GPU), 1.2 V (DDR), and 3.3 V (peripherals) with I²C-configurable voltage margins for dynamic performance scaling. Use Value: Supports DVFS across 4 performance states - extends thermal margin by 12°C and reduces average IVI power consumption by 22%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-buck power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LP87524BRNFRQ1 | Same pinout and electrical specs; differs only in factory-programmed default voltages (Buck2 = 3.3 V vs. 1.0 V on J-version). | Optimized for infotainment SoCs requiring higher IO rail voltage; not suitable for radar RF core rails needing 1.0 V. | Select LP87524JRNFRQ1 when powering AWR/IWR MMICs with 1.0 V/1.8 V RF domains - use B-version for mixed-signal SoCs with 3.3 V IO. |
| TPS65917Q1 | 7-channel PMIC with integrated LDOs, RTC, and charger; lower switching frequency (2.2 MHz); no spread-spectrum or CLKIN sync. | Broad IVI platform support (audio, display, connectivity); lacks radar-specific features like 4-MHz interleaving and RF rail optimization. | Choose TPS65917Q1 for full-featured IVI head units; LP87524JRNFRQ1 remains preferred for EMI-sensitive radar modules requiring 4-MHz switching and external clock lock. |
Compared with LP87524BRNFRQ1 and TPS65917Q1, LP87524JRNFRQ1 uniquely combines 4-MHz phase interleaving, spread-spectrum EMI reduction, and CLKIN synchronization - making it the only qualified solution for AWR/IWR radar systems demanding sub-10 mVp-p ripple and deterministic timing alignment with chirp generators.
Availability
LP87524JRNFRQ1 is available at Aetrix Electronics and suitable for automotive radar, ADAS camera, and digital cluster applications requiring stable component supply, AEC-Q100 Grade 1 qualification, and long-term lifecycle support.
Supply support for LP87524JRNFRQ1 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 solutions - with over 30 years of automotive qualification expertise and 100% AEC-Q100-compliant portfolio coverage.
LP87524JRNFRQ1 belongs to TI's LP875xx-Q1 family of automotive-optimized multi-rail PMICs, engineered specifically for next-generation millimeter-wave radar and vision processing platforms requiring high-frequency, low-noise, and thermally robust power delivery.
FAQ
What is the maximum output current capability of LP87524JRNFRQ1 per channel?
LP87524JRNFRQ1 supports Buck0: 1.5 A, Buck1: 1.5 A, Buck2: 4 A, and Buck3: 2.5 A in its default configuration per TI SNVSAW2B datasheet. The total combined output current is up to 10 A, with forward current limits ranging from 2.0 A to 6.0 A depending on input voltage and channel - verified under –40°C to +125°C ambient conditions.
Does LP87524JRNFRQ1 support external clock synchronization, and what frequency range is accepted?
Yes, LP87524JRNFRQ1 supports external clock synchronization via the CLKIN pin, accepting nominal frequencies from 1 MHz to 24 MHz in 1-MHz increments. Clock detection includes 1.8 µs missing-clock delay and 600 µs internal-to-external clock change latency - enabling precise alignment with radar chirp timing generators to suppress beat interference.
How does LP87524JRNFRQ1 implement load current measurement without external sense resistors?
LP87524JRNFRQ1 measures load current using internal high-side FET RDS(ON) sensing, with 20 mA LSB resolution and <10% accuracy above 1 A. Measurement time is 45 µs in PFM mode (with auto-PWM transition) and 4 µs in PWM mode - providing real-time telemetry for thermal derating and fault detection in LP87524JRNFRQ1-based radar modules.
What protection features are integrated into LP87524JRNFRQ1?
LP87524JRNFRQ1 integrates overvoltage protection (OVP) and undervoltage lockout (UVLO) on VANA (2.51–2.75 V rising UVLO, 5.6–6.1 V rising OVP), per-channel PGOOD monitoring with ±8–20 mV thresholds, thermal warning (115–147 °C) and shutdown (140–160 °C), plus short-circuit and overload protection - all confirmed in Section 6.5 of the LP87524JRNFRQ1 production datasheet.
Is LP87524JRNFRQ1 pin-compatible with other variants in the LP87524x-Q1 family?
Yes, LP87524JRNFRQ1 shares identical 26-pin VQFN-HR (4.5 mm × 4.0 mm) packaging and pinout with LP87524BRNFRQ1 and LP87524PRNFRQ1 - enabling hardware reuse across radar (J), infotainment (B), and mixed-signal (P) platforms. Differences are limited to factory-programmed defaults and current ratings, not physical or electrical interface compatibility.
LP87524JRNFRQ1 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:
- 4A, 4A, 4A, 4A
- Frequency - Switching:
- 4MHz
- 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)
LP87524JRNFRQ1 FAQ
1.How can I place an order for LP87524JRNFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LP87524JRNFRQ1 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 LP87524JRNFRQ1 reliable?
The price and inventory of LP87524JRNFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP87524JRNFRQ1 is usually 5 days.
3.What payment methods are accepted for LP87524JRNFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP87524JRNFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LP87524JRNFRQ1?
LP87524JRNFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LP87524JRNFRQ1 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 LP87524JRNFRQ1?
For technical support, including LP87524JRNFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP87524JRNFRQ1 requirements.
6.How does Aetrix verify that LP87524JRNFRQ1 is sourced from the original manufacturer or authorized distributors?
All LP87524JRNFRQ1 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 LP87524JRNFRQ1 meets industry standards.
7.What is the process for return or replacement of LP87524JRNFRQ1?
All LP87524JRNFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP87524JRNFRQ1, 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 LP87524JRNFRQ1 part is unused and in its original packaging.
Return procedure for LP87524JRNFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LP87524JRNFRQ1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
