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LP87702-Q1

ACTIVE

Dual buck converter and 5-V boost with diagnostic functions

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Data sheet

LP87702-Q1

ACTIVE
Data sheet Order now

Product details

Regulated outputs (#) 3 Configurability Factory programmable, Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.7 Vout (max) (V) 5.2 Iout (max) (A) 3.5 Features Dynamic voltage scaling, Enable, Enable pin, I2C control, Overcurrent protection, Power good, Power sequencing, Power supply and system monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO fixed TI functional safety category Functional Safety Quality-Managed Step-up DC/DC converter 1 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 0 Iq (typ) (mA) 27 Rating Automotive Switching frequency (max) (kHz) 4000 Operating temperature range (°C) -40 to 125 Processor supplier Texas Instruments Processor name mmWave AWR, mmWave IWR Shutdown current (ISD) (typ) (µA) 1 Switching frequency (typ) (kHz) 2000 Product type Radar sensor
Regulated outputs (#) 3 Configurability Factory programmable, Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.7 Vout (max) (V) 5.2 Iout (max) (A) 3.5 Features Dynamic voltage scaling, Enable, Enable pin, I2C control, Overcurrent protection, Power good, Power sequencing, Power supply and system monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO fixed TI functional safety category Functional Safety Quality-Managed Step-up DC/DC converter 1 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 0 Iq (typ) (mA) 27 Rating Automotive Switching frequency (max) (kHz) 4000 Operating temperature range (°C) -40 to 125 Processor supplier Texas Instruments Processor name mmWave AWR, mmWave IWR Shutdown current (ISD) (typ) (µA) 1 Switching frequency (typ) (kHz) 2000 Product type Radar sensor
VQFN (RHB) 32 25 mm² 5 x 5
  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40°C to +125°C, TA
  • Functional Safety Quality-Managed
    • Documentation Available to Aid Functional Safety System Design
    • Two Inputs for External Voltage Monitoring
    • Two Programmable Power-Good Signals
    • Dedicated Reference Voltage for Diagnostics
    • Window Watchdog with Reset Output
    • Output Short-Circuit and Overload Protection
    • Overtemperature Warning and Protection
    • Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)
  • Two High-Efficiency Step-Down DC/DC converters:
    • Maximum Output Current 3.5 A
    • 2-MHz, 3-MHz, or 4-MHz Switching Frequency
    • Auto PWM/PFM and Forced-PWM Operations
    • Output Voltage = 0.7 V to 3.36 V
  • 5-V Boost Converter
    • Maximum Output Current 600 mA
  • External Clock Input to Synchronize Switching
  • Spread-Spectrum Modulation
  • Programmable Start-up and Shutdown Delays and Sequencing with Enable Signal
  • Configurable General Purpose Outputs (GPOs)
  • I2C-Compatible Interface Supporting Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function with Programmable Masking
  • AEC-Q100 Qualified for Automotive Applications:
    • Device Temperature Grade 1: –40°C to +125°C, TA
  • Functional Safety Quality-Managed
    • Documentation Available to Aid Functional Safety System Design
    • Two Inputs for External Voltage Monitoring
    • Two Programmable Power-Good Signals
    • Dedicated Reference Voltage for Diagnostics
    • Window Watchdog with Reset Output
    • Output Short-Circuit and Overload Protection
    • Overtemperature Warning and Protection
    • Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)
  • Two High-Efficiency Step-Down DC/DC converters:
    • Maximum Output Current 3.5 A
    • 2-MHz, 3-MHz, or 4-MHz Switching Frequency
    • Auto PWM/PFM and Forced-PWM Operations
    • Output Voltage = 0.7 V to 3.36 V
  • 5-V Boost Converter
    • Maximum Output Current 600 mA
  • External Clock Input to Synchronize Switching
  • Spread-Spectrum Modulation
  • Programmable Start-up and Shutdown Delays and Sequencing with Enable Signal
  • Configurable General Purpose Outputs (GPOs)
  • I2C-Compatible Interface Supporting Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function with Programmable Masking

The LP87702-Q1helps meet the power management requirements of the latest platforms, particularly in automotive radar and camera and industrial radar applications. The device contains two step-down DC/DC converters, and a 5-V boost converter to support safety critical applications. The device integrates two voltage monitoring inputs for external power supplies and a window watchdog.

The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output current range for buck converters. The LP87702-Q1 uses remote voltage sensing to compensate IR drop between the converter output and the point-of-load, thus improving the accuracy of the output voltage.

Programmable start-up and shutdown sequences synchronized to the enable signal are supported, including general purpose digital outputs.

During start-up and voltage change, the device controls the output slew rate for minimum output voltage overshoot and inrush current. This device contains one-time-programmable (OTP) memory. Each orderable part number has specific OTP settings for a given application. Details of the default OTP configuration for each orderable part number can be found in the technical reference manual.

The LP87702-Q1helps meet the power management requirements of the latest platforms, particularly in automotive radar and camera and industrial radar applications. The device contains two step-down DC/DC converters, and a 5-V boost converter to support safety critical applications. The device integrates two voltage monitoring inputs for external power supplies and a window watchdog.

The automatic PWM/PFM (AUTO mode) operation gives high efficiency over a wide output current range for buck converters. The LP87702-Q1 uses remote voltage sensing to compensate IR drop between the converter output and the point-of-load, thus improving the accuracy of the output voltage.

Programmable start-up and shutdown sequences synchronized to the enable signal are supported, including general purpose digital outputs.

During start-up and voltage change, the device controls the output slew rate for minimum output voltage overshoot and inrush current. This device contains one-time-programmable (OTP) memory. Each orderable part number has specific OTP settings for a given application. Details of the default OTP configuration for each orderable part number can be found in the technical reference manual.
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Technical documentation

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Type Title Date
* Data sheet LP87702-Q1 Dual Buck Converter and 5-V Boost With Diagnostic Functions datasheet (Rev. C) PDF | HTML 26 Feb 2021
User guide LP877021RHBRQ1 Technical Reference Manual PDF | HTML 21 Jun 2023
Product overview Mobileye EyeQ6L – Semi Discrete Power Tree PDF | HTML 05 Aug 2022
User guide Power Supply Design for xWR Radar Using LP87702K-Q1 (Rev. A) PDF | HTML 29 Jan 2022
Technical article Improving industrial radar RF performance with low-noise, thermal-optimized power PDF | HTML 21 Apr 2021
Application brief The Benefits of FlexPower PMIC Devices (Rev. B) PDF | HTML 23 Nov 2020
Technical article Powering levels of autonomy: a quick guide to DC/DC solutions for SAE autonomy lev 18 Nov 2020
User guide LP87702-Q1 Technical Reference Manual (Rev. D) 09 Apr 2020
User guide LP877020-Q1 Technical Reference Manual (Rev. A) 09 Apr 2020
User guide LP877020-Q1 Configuration Guide 18 Feb 2020
Technical article How to meet European Commission ADAS requirements with TI DC/DC converters PDF | HTML 09 May 2019
Design guide Automated Parking System Reference Design Using 77-GHz mmWave Sensor 24 Jan 2019
More literature Automotive mmWave sensors 10 Jul 2018
EVM User's guide LP8770Q1EVM Evaluation Module User Guide (Rev. A) 13 Jun 2018

Design & development

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Evaluation board

LP8770Q1EVM — Evaluation Module for LP8770-Q1 Boost and Dual Buck Regulators With Diagnostic Functions

The LP8770Q1EVM is designed to meet the power management requirements of the latest processor and platform needs in automotive camera and radar applications. The device contains two step-down DC-DC converters and two linear regulators and general purpose digital output signal. The device is (...)
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Simulation model

LP8770-Q1 SIMPLIS Model

SNVMC02.ZIP (33 KB) - SIMPLIS Model
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Simulation model

LP87702-Q1 PSpice Average Model

SNVMBI8.ZIP (86 KB) - PSpice Model
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Calculation tool

PEET-GUI — PMIC Efficiency Estimator Tool (PEET)

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Schematic

LP87702x Design Checklist

SNVR494.ZIP (324 KB)
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Reference designs

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VQFN (RHB) 32 Ultra Librarian
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