Eine neuere Version dieses Produkts ist verfügbar

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung
BQ25185 AKTIV Eigenständiges lineares 1-Zellen-Ladegerät (1 A) mit Stromversorgungspfad und Unterstützung für den BQ25185 comes with wider Vin, higher battery discharge and solar input support.
Ähnliche Funktionalität wie verglichener Baustein
BQ25180 AKTIV Programmierbares lineares Ladegerät, 1 A, Li-Ion und LiFePO4 I²C, mit geregeltem Strompfad, WCS This product is 1-A Li-ion and LiFePO4 I²C programmable linear charger with regulated power path in a WCSP package

Produktdetails

Number of series cells 1 Charge current (max) (A) 1.5 Vin (max) (V) 10.2 TI functional safety category Functional Safety-Capable Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 28 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1 Charge current (max) (A) 1.5 Vin (max) (V) 10.2 TI functional safety category Functional Safety-Capable Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (min) (V) 4.2 Battery charge voltage (max) (V) 4.2 Absolute max Vin (max) (V) 28 Control topology Linear Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, Input OVP, Power Path, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 4.35 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RGT) 16 9 mm² 3 x 3
  • Fully compliant USB charger
    • Selectable 100-mA and 500-mA maximum input current
    • 100-mA Maximum current limit ensures compliance to USB-IF standard
    • Input-based dynamic power management (VIN-DPM) for protection against poor USB sources
  • Functional Safety-Capable (BQ24074)
  • 28-V Input rating with overvoltage protection
  • Integrated dynamic power path management (DPPM) function simultaneously and independently powers the system and charges the battery
  • Supports up to 1.5-A charge current with current monitoring output (ISET)
  • Programmable input current limit up to 1.5 A for wall adapters
  • System output tracks battery voltage (BQ24072)
  • Programmable termination current (BQ24074)
  • Battery disconnect function with SYSOFF input (BQ24075, BQ24079)
  • Programmable pre-charge and fast-charge safety timers
  • Reverse current, short-circuit and thermal protection
  • NTC thermistor input
  • Proprietary start-up sequence limits inrush current
  • Status indication – charging/done, power good
  • Safety-Related Certification:
    • IEC 62368-1 Certification (BQ24072)
  • Fully compliant USB charger
    • Selectable 100-mA and 500-mA maximum input current
    • 100-mA Maximum current limit ensures compliance to USB-IF standard
    • Input-based dynamic power management (VIN-DPM) for protection against poor USB sources
  • Functional Safety-Capable (BQ24074)
  • 28-V Input rating with overvoltage protection
  • Integrated dynamic power path management (DPPM) function simultaneously and independently powers the system and charges the battery
  • Supports up to 1.5-A charge current with current monitoring output (ISET)
  • Programmable input current limit up to 1.5 A for wall adapters
  • System output tracks battery voltage (BQ24072)
  • Programmable termination current (BQ24074)
  • Battery disconnect function with SYSOFF input (BQ24075, BQ24079)
  • Programmable pre-charge and fast-charge safety timers
  • Reverse current, short-circuit and thermal protection
  • NTC thermistor input
  • Proprietary start-up sequence limits inrush current
  • Status indication – charging/done, power good
  • Safety-Related Certification:
    • IEC 62368-1 Certification (BQ24072)

The BQ2407x series of devices are integrated Li-Ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or an AC adapter and support charge currents up to 1.5 A. The input voltage range with input overvoltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the BQ2407x to meet USB-IF inrush current specifications. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing incorrectly configured USB sources.

The BQ2407x features dynamic power path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold; thus, supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination and enables the system to run with a defective or absent battery pack.

Additionally, the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery. The power path management architecture also lets the battery supplement the system current requirements when the adapter cannot deliver the peak system currents, thus enabling the use of a smaller adapter.

The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The input current limit and charge current are programmable using external resistors.

The BQ2407x series of devices are integrated Li-Ion linear chargers and system power path management devices targeted at space-limited portable applications. The devices operate from either a USB port or an AC adapter and support charge currents up to 1.5 A. The input voltage range with input overvoltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the BQ2407x to meet USB-IF inrush current specifications. Additionally, the input dynamic power management (VIN-DPM) prevents the charger from crashing incorrectly configured USB sources.

The BQ2407x features dynamic power path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold; thus, supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination and enables the system to run with a defective or absent battery pack.

Additionally, the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery. The power path management architecture also lets the battery supplement the system current requirements when the adapter cannot deliver the peak system currents, thus enabling the use of a smaller adapter.

The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The input current limit and charge current are programmable using external resistors.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet BQ2407x Standalone 1-Cell 1.5-A Linear Battery Charger with PowerPath datasheet (Rev. N) 27 Okt 2021
Application note Configuring Standalone Linear Power Path Chargers (Rev. A) PDF | HTML 06 Apr 2020
Functional safety information BQ24074 Pin FMA 20 Feb 2020
Functional safety information BQ2407x Functional Safety FIT Rate and Failure Mode Distribution 20 Feb 2020
Application note Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A) 01 Mai 2018
User guide bq24072/3/4/5/9(T) and bq24230/2 1.5-A Single-Chip Li-Ion (Rev. E) 03 Jan 2017
Application note Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application 08 Nov 2012
Analog Design Journal Designing a linear Li-Ion battery charger with power-path control 01 Mai 2009
Analog Design Journal Q2 2009 Issue Analog Applications Journal 01 Mai 2009
User guide Power-Path Li-Ion Charger Selection 17 Okt 2008

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

BQ24074EVM — BQ24074-Evaluierungsmodul

This user’s guide describes the bq24072/3/4/5/9(T) and bq24230/2 (bqTiny-III™) evaluation module (EVM). The EVM provides a convenient method for evaluating the performance of a charge management and system power solution for portable applications using the bq24072/3/4/5/9(T) and (...)

Benutzerhandbuch: PDF
Gerberdatei

HPA282B Gerber Files

SLUC342.ZIP (207 KB)
Gerberdatei

Linear Charger NTC Calculator

SLUC670.ZIP (350 KB)
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
VQFN (RGT) 16 Ultra Librarian

Bestellen & Qualität

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  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

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