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LP875761-Q1

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Four-phase 3-Mhz 1-V 16-A DC/DC buck converter with integrated switches

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Data sheet
Four-phase 3-Mhz 1-V 16-A DC/DC buck converter with integrated switches

LP875761-Q1

ACTIVE
Data sheet Order now

Product details

Regulated outputs (#) 1 Vin (Min) (V) 2.8 Vin (Max) (V) 5.5 Iout (Max) (A) 16 Rating Automotive Step-down DC/DC controller 0 Step-down DC/DC converter 1 Step-up DC/DC controller 0 Step-up DC/DC converter 0 LDO 0 Iq (Typ) (mA) 0.0067 Features Dynamic Voltage Scaling, Enable, Enable Pin, I2C Control, Over Current Protection, Power Good, Power Sequencing, Power Supply and System Monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal Shutdown, UVLO Fixed Operating temperature range (C) -40 to 125 Processor name EyeQ4 High Processor supplier Mobileye Shutdown current (ISD) (Typ) (uA) 1.4 Configurability Factory programmable, Hardware configurable
Regulated outputs (#) 1 Vin (Min) (V) 2.8 Vin (Max) (V) 5.5 Iout (Max) (A) 16 Rating Automotive Step-down DC/DC controller 0 Step-down DC/DC converter 1 Step-up DC/DC controller 0 Step-up DC/DC converter 0 LDO 0 Iq (Typ) (mA) 0.0067 Features Dynamic Voltage Scaling, Enable, Enable Pin, I2C Control, Over Current Protection, Power Good, Power Sequencing, Power Supply and System Monitoring, Spread-Spectrum Clock (SSC) Generation, Thermal Shutdown, UVLO Fixed Operating temperature range (C) -40 to 125 Processor name EyeQ4 High Processor supplier Mobileye Shutdown current (ISD) (Typ) (uA) 1.4 Configurability Factory programmable, Hardware configurable
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VQFN-HR (RNF) 26 18 mm² 4 x 4.5
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  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Input Voltage: 2.8 V to 5.5 V
  • Output Voltage: 1.0 V
  • Four High-Efficiency Step-Down DC/DC Converter Cores:
    • Maximum Output Current: 16 A (4 A per Phase)
  • Switching Frequency: 3 MHz
  • Spread-Spectrum Mode and Phase Interleaving
  • Configurable General Purpose I/O (GPIOs)
  • I2C-Compatible Interface That Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function With Programmable Masking
  • Programmable Power-Good Signal (PGOOD)
  • Output Short-Circuit and Overload Protection
  • Overtemperature Warning and Protection
  • Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C4B
  • Input Voltage: 2.8 V to 5.5 V
  • Output Voltage: 1.0 V
  • Four High-Efficiency Step-Down DC/DC Converter Cores:
    • Maximum Output Current: 16 A (4 A per Phase)
  • Switching Frequency: 3 MHz
  • Spread-Spectrum Mode and Phase Interleaving
  • Configurable General Purpose I/O (GPIOs)
  • I2C-Compatible Interface That Supports Standard (100 kHz), Fast (400 kHz), Fast+ (1 MHz), and High-Speed (3.4 MHz) Modes
  • Interrupt Function With Programmable Masking
  • Programmable Power-Good Signal (PGOOD)
  • Output Short-Circuit and Overload Protection
  • Overtemperature Warning and Protection
  • Overvoltage Protection (OVP) and Undervoltage Lockout (UVLO)
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The LP875761-Q1 device is designed to meet the power-management requirements of the latest processors and platforms in various automotive power applications. The device contains four step-down DC/DC converter cores, which are configured as a 4-phase output in forced-PWM mode. The device is controlled by an I2C-compatible serial interface and by enable signals.

The LP875761-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) which improves the accuracy of the output voltage. The switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP875761-Q1 device supports load-current measurement without the addition of external current-sense resistors. The LP875761-Q1 device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can also include GPIO signals to control external regulators, load switches, and processor reset. During start-up, the device controls the output slew rate to minimize output-voltage overshoot and in-rush current.

The LP875761-Q1 device is designed to meet the power-management requirements of the latest processors and platforms in various automotive power applications. The device contains four step-down DC/DC converter cores, which are configured as a 4-phase output in forced-PWM mode. The device is controlled by an I2C-compatible serial interface and by enable signals.

The LP875761-Q1 supports remote differential-voltage sensing for multiphase outputs to compensate IR drop between the regulator output and the point-of-load (POL) which improves the accuracy of the output voltage. The switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP875761-Q1 device supports load-current measurement without the addition of external current-sense resistors. The LP875761-Q1 device also supports programmable start-up and shutdown delays and sequences synchronized to enable signals. The sequences can also include GPIO signals to control external regulators, load switches, and processor reset. During start-up, the device controls the output slew rate to minimize output-voltage overshoot and in-rush current.

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Technical documentation

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Type Title Date
* Data sheet LP875761-Q1 Four-Phase 3-MHz 1-V 16-A DC/DC Buck Converter With Integrated Switches datasheet 09 Dec 2020
Technical article 3 quiescent-current (Iq) specifications you need to understand 12 Nov 2021
User guide LP875761Q1EVM Evaluation Module User's Guide 09 Oct 2020
User guide LP875761A-Q1 Technical Reference Manual 21 Sep 2020
Certificate LP875761Q1EVM EU Declaration of Conformity (DoC) 13 Aug 2020
Application note Power supply design for mobileye eyeQ4 high using LP875761-Q1 22 Feb 2019

Design & development

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Evaluation board

LP875761Q1EVM — LP875761-Q1 single output, four-phase buck converter EVM

The LP875761Q1EVM demonstrates the integrated circuit LP875761-Q1 from Texas Instruments.

The LP875761-Q1 is a high-performance, multiphase step-down converter designed to meet the power management requirements of the latest applications processors in automotive applications. The device contains (...)

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Simulation model

LP875761-Q1 SIMPLIS Model

SNVMC14.ZIP (28 KB) - SIMPLIS Model
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Simulation model

LP875761-Q1 PSPICE Model

SNVMC22.ZIP (280 KB) - PSpice Model
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Calculation tool

PEET-GUI — PMIC Efficiency Estimator Tool (PEET)

The PMIC Efficiency Estimator Tool (PEET GUI) is a graphical user interface used to easily evaluate PMIC DC/DC regulator efficiency relative to your design conditions. The PEET GUI can be used to configure each DC/DC regulator separately and provides real-time efficiency and power dissipation data (...)
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