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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear + Switching

Texas Instruments LP87745101RXVRQ1

Name: LP87745101RXVRQ1
Brand: Texas Instruments
SKU: LP87745101RXVRQ1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LP87745101RXVRQ1

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - Linear + Switching

Package:: 28-PowerVFQFN

Datasheet:: LP87745101RXVRQ1.pdf

Description:: AUTOMOTIVE THREE 3-A LOW-NOISE B

Quantity:: RFQ Add To RFQ list

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Inventory:2,996

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Product details

Overview

LP87745101RXVRQ1 from Texas Instruments is an automotive radar-sensor PMIC designed to power AWR, IWR, and other mmWave radar MMIC platforms. The device integrates three low-noise high-frequency buck converters plus radar-oriented auxiliary power functions, allowing radar sensor modules requiring a 5V boost rail to generate tightly controlled rails from a nominal 3.3V input.

As part of the LP87745-Q1 product family, LP87745101RXVRQ1 combines 3V to 4V input operation, low-noise buck regulation, I2C-controlled dynamic voltage scaling, high-frequency switching, regulator OV/UV monitoring, watchdog and ESM diagnostics, CRC/BIST safety support, and wettable-flank automotive packaging. For engineers reviewing the LP87745101RXVRQ1 datasheet, LP87745101RXVRQ1 pinout, LP87745101RXVRQ1 application, or LP87745101RXVRQ1 equivalent, this device is widely used in automotive radar sensors, mmWave front ends, AWR radar modules, IWR industrial radar systems, ADAS radar ECUs, and compact safety-oriented sensing platforms.

Technical Context

In radar sensor modules, LP87745101RXVRQ1 operates from a nominal 3.3V rail across a 3V to 4V input range. Its three buck converters generate low-noise rails for radar RF, analog, digital, and processor-related domains, with voltage options from 0.8V/0.82V and 0.9V to 1.9V in 20mV steps.

The buck stages support high switching frequencies of 4.4MHz, 8.8MHz, or 17.6MHz to help reduce inductor size and move switching noise away from sensitive radar bands. The I2C interface supports dynamic voltage scaling, output monitoring, interrupt behavior, and configuration for the radar power tree.

LP87745101RXVRQ1 is commonly used when radar sensor modules requiring a 5V boost rail needs AEC-Q100 Grade 1 operation, short-circuit and overload protection, overtemperature warning/protection, watchdog diagnostics, ESM monitoring, CRC/BIST safety coverage, and a compact 28-pin VQFN-HR RXV package.

Key Specifications

Parameter	Value and Actual Design Meaning
Device Type	Automotive radar PMIC in the TI LP87745-Q1 family.
Input Voltage Range	Nominal 3.3V input, 3V to 4V operating range.
Buck Outputs	Three low-noise step-down converters, maximum output current 3A / 3A / 3A.
Buck Voltage Range	0.8V, 0.82V, and 0.9V to 1.9V in 20mV steps.
Switching Frequency	4.4MHz, 8.8MHz, or 17.6MHz factory-programmed options.
Auxiliary Outputs	IO LDO support for radar-module auxiliary supply needs; 5V boost converter for radar sensor power architecture.
Interface / Safety	I2C DVS, OV/UV monitoring, watchdog, ESM, CRC/BIST safety support, functional-safety documentation available up to ASIL-C / SIL-2 system design.
Package / Temperature	28-pin VQFN-HR RXV package; -40C to +125C; AEC-Q100 Grade 1.

Pinout & Package

The LP87745101RXVRQ1 pinout includes input supply pins, three buck switch nodes, feedback/output-sense pins, auxiliary output pins, I2C interface pins, enable and interrupt functions, watchdog/ESM-related pins, and exposed-pad ground.

For PCB design, each buck loop should be compact, low-noise rail routing should be isolated from radar RF sections, I2C and monitoring pins should be kept away from switch nodes, and the exposed pad should connect to a low-impedance thermal ground plane.

Pin / Function	PCB Design and Circuit Role
VIN / PVIN	Input supply for the PMIC and buck power stages.
SW_B1 / SW_B2 / SW_B3	Switching nodes for the three buck converters.
VOUT / FB Pins	Output sensing and voltage regulation for radar rails.
LDO / Load-Switch / Boost Pins	Auxiliary output functions for IO, external rail, or boost support depending on family.
SDA / SCL	I2C control, DVS, and status interface.
EN / nINT	Enable and interrupt/status reporting functions.
WD / ESM	Watchdog and error-signal-monitor safety interface functions.
GND / Exposed Pad	Ground and thermal return path.

Key Features

Three high-frequency low-noise buck converters support radar rail integration.
3V to 4V input range fits nominal 3.3V radar module power.
I2C dynamic voltage scaling supports adaptive radar power states.
OV/UV monitoring and interrupt reporting support system diagnostics.
Watchdog, ESM, CRC, and BIST functions support functional-safety design.
AEC-Q100 Grade 1 and wettable-flank packaging support automotive production.

Applications

Automotive Radar Sensors

ADAS Radar ECUs

Use Scenario: Used in vehicle mmWave radar modules.

IC Role: Supplies RF, analog, and digital radar rails.

Use Value: Supports low-noise safety-oriented power.

Use Scenario: Used in radar-based driver-assistance systems.

IC Role: Provides monitored PMIC rails.

Use Value: Supports diagnostic coverage and compact design.

AWR Radar Modules

Industrial mmWave Sensors

Use Scenario: Used with TI automotive radar sensor platforms.

IC Role: Generates sequenced low-noise rails.

Use Value: Improves integration for radar reference designs.

Use Scenario: Used in IWR radar sensing equipment.

IC Role: Supplies radar MMIC and controller rails.

Use Value: Supports high-frequency compact power conversion.

Equivalent & Alternatives

When evaluating a LP87745101RXVRQ1 equivalent, engineers should compare radar rail count, buck current, switching-frequency plan, auxiliary output functions, I2C configuration, functional-safety documentation, package, and AEC-Q100 grade.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LP87745-Q1	TI radar PMIC with three buck converters and 5V boost support in a related LP8774x-Q1 architecture.	Used in radar MMIC power trees requiring boost output support.	Compare boost need, buck current, package, and safety target.
LP87725-Q1	TI radar PMIC with three buck converters, LDO/load-switch functions, and related safety monitoring.	Used in radar sensors requiring IO LDO and load-switch support.	Compare auxiliary rails, package, buck-current rating, and configuration.

Compared with LP87745-Q1, LP87745101RXVRQ1 should be selected when its exact LP87745-Q1 auxiliary-output structure and orderable configuration match the radar board. LP87745101RXVRQ1 vs LP87725-Q1 selection depends on boost requirement, IO LDO/load-switch needs, buck current, safety documentation, and package.

Quality

LP87745101RXVRQ1 should be sourced as original Texas Instruments components through traceable supply channels. Quality checks may include wettable-flank package inspection, top-mark validation, solderability testing, buck output verification, I2C communication testing, watchdog/ESM behavior review, and AEC-Q100 documentation confirmation.

Production validation should include buck startup, output ripple, radar rail noise, DVS transitions, OV/UV thresholds, watchdog operation, ESM behavior, thermal performance, and fault-reporting timing.

Availability

LP87745101RXVRQ1 available at Aetrix Electronics and is suitable for automotive radar, mmWave sensing, ADAS radar ECU, AWR/IWR radar, industrial sensing, and compact safety-oriented embedded power systems.

Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial electronics, automotive electronics, and embedded product programs. Sample and NPI supply support, as well as urgent in-stock supply support, can also be arranged for prototype builds, pilot runs, and time-critical production needs.

For production builds, confirming orderable OTP configuration, package, functional-safety documentation, lifecycle status, lead time, and sourcing continuity helps reduce procurement risk.

Manufacturer

Texas Instruments is a global semiconductor manufacturer specializing in analog ICs, embedded processors, power-management devices, interface products, sensing solutions, and industrial semiconductor technologies for automotive, industrial, communication, and consumer electronics.

The LP87745-Q1 product family is a Texas Instruments automotive radar PMIC series integrating three low-noise high-frequency buck converters, I2C control, safety monitoring, and radar-focused auxiliary power functions for AWR, IWR, and mmWave sensing platforms.

FAQ

What is LP87745101RXVRQ1 used for?

LP87745101RXVRQ1 is used for automotive radar sensors, mmWave front ends, ADAS radar ECUs, AWR radar modules, IWR industrial radar systems, and compact radar power trees.

Where can I find the LP87745101RXVRQ1 datasheet download?

The LP87745101RXVRQ1 datasheet is available from Texas Instruments as part of the LP87745-Q1 radar PMIC documentation.

What should be considered in LP87745101RXVRQ1 pinout design?

Designers should keep buck loops compact, isolate low-noise radar rails from switch nodes, route I2C and safety lines carefully, and connect the exposed pad to thermal ground.

Does LP87745101RXVRQ1 support I2C control?

Yes. The device supports I2C control and dynamic voltage scaling for regulator outputs.

What are common LP87745101RXVRQ1 equivalent solutions?

Common candidates include LP87745-Q1 and LP87725-Q1 depending on boost, LDO/load-switch, buck-current, package, and safety requirements.

LP87745101RXVRQ1 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 28-PowerVFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Topology:: Step-Down (Buck) (3), Step-Up (Boost) (1), Linear (LDO) (1)

Number of Outputs:: 5

Frequency - Switching:: 4.4MHz, 8.8MHz, 17.6MHz

Voltage/Current - Output 1:: 0.9V ~ 1.9V, 3A

Voltage/Current - Output 2:: 0.9V ~ 1.9V, 3A

Voltage/Current - Output 3:: 0.9V ~ 1.9V, 3A

w/LED Driver:: No

w/Supervisor:: No

w/Sequencer:: No

Voltage - Supply:: 3V ~ 4V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 28-VQFN-HR (4.5x5)

LP87745101RXVRQ1 FAQ

1.How can I place an order for LP87745101RXVRQ1 through Aetrix?

Please submit a Request for Quotation (RFQ) for LP87745101RXVRQ1 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 LP87745101RXVRQ1 reliable?

The price and inventory of LP87745101RXVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LP87745101RXVRQ1 is usually 5 days.

3.What payment methods are accepted for LP87745101RXVRQ1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LP87745101RXVRQ1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LP87745101RXVRQ1?

LP87745101RXVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LP87745101RXVRQ1 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 LP87745101RXVRQ1?

For technical support, including LP87745101RXVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LP87745101RXVRQ1 requirements.

6.How does Aetrix verify that LP87745101RXVRQ1 is sourced from the original manufacturer or authorized distributors?

All LP87745101RXVRQ1 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 LP87745101RXVRQ1 meets industry standards.

7.What is the process for return or replacement of LP87745101RXVRQ1?

All LP87745101RXVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with LP87745101RXVRQ1, 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 LP87745101RXVRQ1 part is unused and in its original packaging.

Return procedure for LP87745101RXVRQ1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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