LP8733

ACTIVE

Dual high-current buck converters and dual linear regulators

Product details

Regulated outputs (#) 4 Configurability Factory programmable, Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.7 Vout (max) (V) 3.36 Iout (max) (A) 3 Features Enable pin, I2C control, Power good, Power sequencing, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO adjustable Step-up DC/DC converter 0 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 2 Iq (typ) (mA) 0.009 Rating Catalog Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 125 Processor supplier NXP, Texas Instruments Processor name AM6411, AM68, AM68A, AM68x, i.MX 8M Mini/Nano Switching frequency (typ) (kHz) 2000 Product type Processor and FPGA
Regulated outputs (#) 4 Configurability Factory programmable, Software configurable Vin (min) (V) 2.8 Vin (max) (V) 5.5 Vout (min) (V) 0.7 Vout (max) (V) 3.36 Iout (max) (A) 3 Features Enable pin, I2C control, Power good, Power sequencing, Spread-Spectrum Clock (SSC) Generation, Thermal shutdown, UVLO adjustable Step-up DC/DC converter 0 Step-down DC/DC converter 2 Step-down DC/DC controller 0 Step-up DC/DC controller 0 LDO 2 Iq (typ) (mA) 0.009 Rating Catalog Switching frequency (max) (kHz) 2200 Operating temperature range (°C) -40 to 125 Processor supplier NXP, Texas Instruments Processor name AM6411, AM68, AM68A, AM68x, i.MX 8M Mini/Nano Switching frequency (typ) (kHz) 2000 Product type Processor and FPGA
VQFN (RHD) 28 25 mm² 5 x 5
  • Device operating temperature range: –40°C to +125°C ambient temperature
  • Input voltage: 2.8 V to 5.5 V
  • Two high-efficiency step-down DC/DC converters:
    • Output voltage: 0.7 V to 3.36 V
    • Maximum output current 3 A per phase
    • Adding and shedding auto phase and force multi-phase operations in dual-phase configuration
    • Remote differential feedback voltage sensing in dual-phase configuration
    • Programmable output-voltage slew rate from 0.5 mV/µs to 10 mV/µs
    • 2-MHz switching frequency
    • Spread-spectrum mode and phase interleaving for EMI reduction
  • Two linear regulators:
    • Input voltage: 2.5 V to 5.5 V
    • Output voltage: 0.8 V to 3.3 V
    • Maximum output current 300 mA
  • Configurable general-purpose output signals (GPO, GPO2)
  • 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)
  • 28-pin, 5-mm × 5-mm VQFN package with wettable flanks
  • Device operating temperature range: –40°C to +125°C ambient temperature
  • Input voltage: 2.8 V to 5.5 V
  • Two high-efficiency step-down DC/DC converters:
    • Output voltage: 0.7 V to 3.36 V
    • Maximum output current 3 A per phase
    • Adding and shedding auto phase and force multi-phase operations in dual-phase configuration
    • Remote differential feedback voltage sensing in dual-phase configuration
    • Programmable output-voltage slew rate from 0.5 mV/µs to 10 mV/µs
    • 2-MHz switching frequency
    • Spread-spectrum mode and phase interleaving for EMI reduction
  • Two linear regulators:
    • Input voltage: 2.5 V to 5.5 V
    • Output voltage: 0.8 V to 3.3 V
    • Maximum output current 300 mA
  • Configurable general-purpose output signals (GPO, GPO2)
  • 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)
  • 28-pin, 5-mm × 5-mm VQFN package with wettable flanks

The LP8733xx is designed to meet the power management requirements in industrial applications. The device has two step-down DC/DC converters (which can be configured as a single dual-phase regulator or two single-phase regulators), two linear regulators, and two general-purpose digital-output signals. The device is controlled by an I2C-compatible serial interface and by an enable signal.

The automatic PWM/PFM (AUTO mode) operation together with the automatic phase adding/shedding gives high efficiency over a wide output-current range. The LP8733xx supports remote voltage sensing (differential in dual-phase configuration) to compensate IR drop between the regulator output and the point-of-load (POL), thus improving the accuracy of the output voltage. In addition, the switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP8733xx device supports programmable start-up and shutdown delays and sequences including GPO signals synchronized to the enable signal. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.

The LP8733xx is designed to meet the power management requirements in industrial applications. The device has two step-down DC/DC converters (which can be configured as a single dual-phase regulator or two single-phase regulators), two linear regulators, and two general-purpose digital-output signals. The device is controlled by an I2C-compatible serial interface and by an enable signal.

The automatic PWM/PFM (AUTO mode) operation together with the automatic phase adding/shedding gives high efficiency over a wide output-current range. The LP8733xx supports remote voltage sensing (differential in dual-phase configuration) to compensate IR drop between the regulator output and the point-of-load (POL), thus improving the accuracy of the output voltage. In addition, the switching clock can be forced to PWM mode and also synchronized to an external clock to minimize the disturbances.

The LP8733xx device supports programmable start-up and shutdown delays and sequences including GPO signals synchronized to the enable signal. During start-up and voltage change, the device controls the output slew rate to minimize output voltage overshoot and the in-rush current.

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Technical documentation

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Type Title Date
* Data sheet LP8733xx Dual High-Current Buck Converter and Dual Linear Regulator datasheet (Rev. A) PDF | HTML 04 Jun 2021
User guide LP87334F Technical Reference Manual PDF | HTML 22 Jan 2024
User guide LP87334E Technical Reference Manual PDF | HTML 14 Jun 2023
Application note AM68x Processor Power Solutions Using LP87334E PMIC for Industrial Applications PDF | HTML 14 Mar 2023
Application note Using LP8733xx and TPS65218xx PMICs to Power AM64x and AM243x Sitara Processors PDF | HTML 16 Feb 2022
User guide LP873364 Technical Reference Manual PDF | HTML 22 Sep 2021
Application brief Powering the AM64xx With the LP8733xx PMIC PDF | HTML 15 Jul 2021
User guide LP87334D Technical Reference Manual PDF | HTML 17 Jun 2021
User guide LP873345 Technical Reference Manual PDF | HTML 16 Mar 2021
Application brief Powering the NXP i.MX 8M Mini and Nano with the TPS6521825 and LP873347 PMICs (Rev. B) PDF | HTML 09 Dec 2019
User guide LP873347 Technical Reference Manual PDF | HTML 10 Sep 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LP87330Q1EVM — LP873300-Q1 I²C Configurable Dual High-Current Buck Converters and Dual Linear Regulator EVM

The LP87330Q1EVM demonstrates the integrated circuit LP873300-Q1 from Texas Instruments.

The LP873300-Q1 has two high-performance step-down converters and two LDOs, designed to meet the power management requirements of the latest applications processors in automotive applications. The LP873300-Q1 is (...)

User guide: PDF
Not available on TI.com
Evaluation board

VVDN-3P-SOM — Fully functional SOM boards integrating TI PMIC, NXP application processors and different interfaces

VVDN is a third party developing System on Module (SOM) to demonstrate that TI PMICs can be optimized to power NXP processors. These SOMs are fully featured, high performance, low cost boards with high speed audio/video processing and improved power efficiency. The fully-functional board (...)

Software development kit (SDK)

AM64X-ADVANCE-SW Early AM64x SDK and SW

The Processor and MCU+ SDKs (Software Development Kits) are unified software platforms for TI embedded processors providing easy setup and fast out-of-the-box access to benchmarks and demos. All releases of these SDKs are consistent across TI’s broad portfolio for which they are provided, (...)

Supported products & hardware

Supported products & hardware

Products
Multi-channel ICs (PMICs)
LP8733 Dual high-current buck converters and dual linear regulators TPS6521855 Power Management IC (PMIC) for TI AM64x
Request
Software development kit (SDK)

PROCESSOR-SDK-LINUX-AM64X Processor SDK Linux for AM64x

The Processor and MCU+ SDKs (Software Development Kits) are unified software platforms for TI embedded processors providing easy setup and fast out-of-the-box access to benchmarks and demos. All releases of these SDKs are consistent across TI’s broad portfolio for which they are provided, (...)

Supported products & hardware

Supported products & hardware

Products
Arm-based processors
AM6411 Single-core 64-bit Arm® Cortex®-A53, single-core Cortex-R5F, PCIe, USB 3.0 and security AM6412 Dual-core 64-bit Arm® Cortex®-A53, single-core Cortex-R5F, PCIe, USB 3.0 and security AM6421 Single-core 64-bit Arm® Cortex®-A53, dual-core Cortex-R5F, PCIe, USB 3.0 and security AM6441 Single-core 64-bit Arm® Cortex®-A53, quad-core Cortex-R5F, PCIe, USB 3.0 and security AM6442 Dual-core 64-bit Arm® Cortex®-A53, quad-core Cortex-R5F, PCIe, USB 3.0 and security AM6422 Dual-core 64-bit Arm® Cortex®-A53, dual-core Cortex-R5F, PCIe, USB 3.0 and security
Multi-channel ICs (PMICs)
LP8733 Dual high-current buck converters and dual linear regulators
Hardware development
Evaluation board
SK-AM64B AM64B starter kit for AM64x Sitara™ processors
Download options
GUI for evaluation module (EVM)

LP873X3-EVM-GUI LP8733 Evaluation Software

Supported products & hardware

Supported products & hardware

Products
Multi-channel ICs (PMICs)
LP8733 Dual high-current buck converters and dual linear regulators
Hardware development
Evaluation board
LP87320Q1EVM LP873200-Q1 I²C Configurable Dual High-Current Buck Converters and Dual Linear Regulator EVM LP87322Q1EVM LP873220-Q1 Dual High-Current Buck Converters and Dual Linear Regulator Evaluation Module LP87330Q1EVM LP873300-Q1 I²C Configurable Dual High-Current Buck Converters and Dual Linear Regulator EVM LP87331Q1EVM LP87332A-Q1 Dual High-Current Buck Converters and Dual Linear Regulator Evaluation Module LP87332Q1EVM LP87332D-Q1 Dual High-Current Buck Converters and Dual Linear Regulator Evaluation Module LP87333Q1EVM LP87332B-Q1 Dual High-Current Buck Converters and Dual Linear Regulator Evaluation Module
Simulation model

LP87332-Q1 PSpice Transient Model (Rev. A)

SNVMB16A.ZIP (207 KB) - PSpice Model
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 (...)
Reference designs

TIDA-050038 — Integrated power supply reference design for NXP i.MX 8M mini processor

TIDA-050038 is a system-on-module (SoM) development board integrating two TI PMICs, TPS6521825 and LP873347, with the NXP™ i.MX 8M Mini Application Processor. The hardware design also includes LPDDR4 SDRAM (2GB, x32-bit), QSPI NORFlash (32MB), 16GB eMMC 5.1, 32-kHz RTC oscillator, WiFi + (...)
Design guide: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
VQFN (RHD) 28 Ultra Librarian

Ordering & quality

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  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

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