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BQ25176M

AKTIV

Linearer Batterielader, 800 mA, für eine Zelle (Li-Ion oder LiFePO4) mit VINDPM

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Datenblatt

BQ25176M

AKTIV
Datenblatt Jetzt bestellen

Produktdetails

Number of series cells 1 Charge current (max) (A) 0.8 Vin (max) (V) 18 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.4 Absolute max Vin (max) (V) 30 Control topology Linear Control interface Standalone (RC-Settable) Features IC thermal regulation, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3 Rating Catalog Operating temperature range (°C) -40 to 125
Number of series cells 1 Charge current (max) (A) 0.8 Vin (max) (V) 18 Cell chemistry Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 3.5 Battery charge voltage (max) (V) 4.4 Absolute max Vin (max) (V) 30 Control topology Linear Control interface Standalone (RC-Settable) Features IC thermal regulation, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 3 Rating Catalog Operating temperature range (°C) -40 to 125
WSON (DSG) 8 4 mm² 2 x 2
  • Input voltage up to 30 V tolerant
  • Input Voltage Based Dynamic Power Management (VINDPM) tracking battery voltage
  • Automatic Sleep Mode for low power consumption
    • 350-nA battery leakage current
    • 80-µA input leakage current when charge disabled
  • Supports 1-cell Li-Ion, Li-Poly, and LiFePO4
  • External resistor programmable operation
    • VSET to set battery regulation voltage:
      • Li-Ion: 4.05 V, 4.15 V, 4.2 V, 4.35 V, 4.4 V
      • LiFePO4: 3.5 V, 3.6 V, 3.7 V
    • ISET to set charge current from 10 mA to 800 mA
  • High accuracy
    • ±0.5% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • Precharge current 20% of ISET
    • Termination current 10% of ISET
    • Battery tracking input voltage dynamic power management (VINDPM) for solar charging
    • BIAS pin for charging function control
    • Open-drain output for status and fault indication
    • Open-drain output for power good indication
  • Integrated fault protection
    • 18.1-V IN overvoltage protection
    • VSET based OUT overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT short-circuit protection
    • VSET, ISET pins short/open protection
  • Input voltage up to 30 V tolerant
  • Input Voltage Based Dynamic Power Management (VINDPM) tracking battery voltage
  • Automatic Sleep Mode for low power consumption
    • 350-nA battery leakage current
    • 80-µA input leakage current when charge disabled
  • Supports 1-cell Li-Ion, Li-Poly, and LiFePO4
  • External resistor programmable operation
    • VSET to set battery regulation voltage:
      • Li-Ion: 4.05 V, 4.15 V, 4.2 V, 4.35 V, 4.4 V
      • LiFePO4: 3.5 V, 3.6 V, 3.7 V
    • ISET to set charge current from 10 mA to 800 mA
  • High accuracy
    • ±0.5% charge voltage accuracy
    • ±10% charge current accuracy
  • Charging features
    • Precharge current 20% of ISET
    • Termination current 10% of ISET
    • Battery tracking input voltage dynamic power management (VINDPM) for solar charging
    • BIAS pin for charging function control
    • Open-drain output for status and fault indication
    • Open-drain output for power good indication
  • Integrated fault protection
    • 18.1-V IN overvoltage protection
    • VSET based OUT overvoltage protection
    • 1000-mA overcurrent protection
    • 125°C thermal regulation; 150°C thermal shutdown protection
    • OUT short-circuit protection
    • VSET, ISET pins short/open protection

The BQ25176M is an integrated 800-mA linear solar charger for 1-cell Li-Ion, Li-Polymer, and LiFePO4 batteries with continual charge mode and battery tracking VINDPM. The device has a single power output that charges the battery. When the system load is placed in parallel with the battery, the charge current is shared between the system and the battery.

The device has four phases for charging a Li-Ion/Li-Poly battery: trickle charge to bring the battery voltage up to VBAT_SHORT, precharge to recover a fully discharged battery, fast-charge constant current to supply the bulk of the charge, and voltage regulation to reach full capacity.

In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold, TREG, 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 automatic charge termination. The charge voltage and fast charge current are programmable through external resistors. The precharge and termination current threshold track the fast charge current setting.

The BQ25176M is an integrated 800-mA linear solar charger for 1-cell Li-Ion, Li-Polymer, and LiFePO4 batteries with continual charge mode and battery tracking VINDPM. The device has a single power output that charges the battery. When the system load is placed in parallel with the battery, the charge current is shared between the system and the battery.

The device has four phases for charging a Li-Ion/Li-Poly battery: trickle charge to bring the battery voltage up to VBAT_SHORT, precharge to recover a fully discharged battery, fast-charge constant current to supply the bulk of the charge, and voltage regulation to reach full capacity.

In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if an internal temperature threshold, TREG, 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 automatic charge termination. The charge voltage and fast charge current are programmable through external resistors. The precharge and termination current threshold track the fast charge current setting.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet BQ25176M 0.8-A, 1-Cell, Linear Solar Charger With Battery Tracking VINDPM For Harvesting Applications datasheet PDF | HTML 21 Sep 2022
Certificate BQ25176MEVM EU RoHS Declaration of Conformity (DoC) 01 Dez 2022

Design und Entwicklung

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Evaluierungsplatine

BQ25176MEVM — BQ25176M Evaluierungsmodul für 800mA lineare Batterielader, Einzelzellen-Li-Ion, Li-Pol und LiFePO4

Dieses Evaluierungsmodul (EVM) unterstützt Sie bei der Evaluierung und der Testung der verschiedenen Betriebsmodi des Bausteins BQ25176M.

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WSON (DSG) 8 Ultra Librarian
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Bestellen & Qualität

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

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