LP8733

AKTIV

Zweifach-Hochstrom-Abwärtswandler und Zweifach-Linearregler

Produktdetails

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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Technische Dokumentation

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Typ Titel Datum
* 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 Mär 2023
Application note Using LP8733xx and TPS65218xx PMICs to Power AM64x and AM243x Sitara Processors PDF | HTML 16 Feb 2022
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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 Mär 2021
Application brief Powering the NXP i.MX 8M Mini and Nano with the TPS6521825 and LP873347 PMICs (Rev. B) PDF | HTML 09 Dez 2019
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