BQ29209

AKTIV

Spannungsschutz für den Automobilbereich mit automatischem Zellausgleich für Li-Ionen-Akkus mit 2 Ze

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Datenblatt

document-pdfAcrobat bq2920x Voltage Protection with Automatic Cell Balance for 2-Series Cell Li-Ion Batteries datasheet (Rev. C) (Englisch) PDF | HTML

BQ29209

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Function

Protection

Number of series cells (min)

2

Number of series cells (max)

2

Features

Cell balancing, External delay capacitor, Overvoltage, Single pin output drive

Operating current (typ) (µA)

3

Rating

Catalog

Vin (max) (V)

10

Overvoltage protection

4.3

Operating temperature range (°C)

-40 to 85

Battery overvoltage protection (min) (V)

4.3

Battery overvoltage protection (max) (V)

4.3

Function

Protection

Number of series cells (min)

2

Number of series cells (max)

2

Features

Cell balancing, External delay capacitor, Overvoltage, Single pin output drive

Operating current (typ) (µA)

3

Rating

Catalog

Vin (max) (V)

10

Overvoltage protection

4.3

Operating temperature range (°C)

-40 to 85

Battery overvoltage protection (min) (V)

4.3

Battery overvoltage protection (max) (V)

4.3

VSON (DRB)

8

9 mm² 3 x 3

2-Series Cell Secondary Protection
Automatic Cell Imbalance Correction with External
Enable Control
- ±30-mV Enable, 0-mV Disable Thresholds
  Typical
External Capacitor-Controlled Delay Timer
External Resistor-Controlled Cell Balance Current
Low Power Consumption I_CC < 3 µA Typical
(V_CELL(ALL) < V_PROTECT)
Internal Cell Balancing Handles Current
up to 15 mA
External Cell Balancing Mode Supported
High-Accuracy Overvoltage Protection:
- ±25 mV with T_A = 0°C to 60°C
Fixed Overvoltage Protection Thresholds:
4.30 V, 4.35 V
Small 8L DRB Package

2-Series Cell Secondary Protection
Automatic Cell Imbalance Correction with External
Enable Control
- ±30-mV Enable, 0-mV Disable Thresholds
  Typical
External Capacitor-Controlled Delay Timer
External Resistor-Controlled Cell Balance Current
Low Power Consumption I_CC < 3 µA Typical
(V_CELL(ALL) < V_PROTECT)
Internal Cell Balancing Handles Current
up to 15 mA
External Cell Balancing Mode Supported
High-Accuracy Overvoltage Protection:
- ±25 mV with T_A = 0°C to 60°C
Fixed Overvoltage Protection Thresholds:
4.30 V, 4.35 V
Small 8L DRB Package

The bq2920x device is a secondary overvoltage protection IC for 2-series cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit and automatic cell imbalance correction.

The voltage of each cell in a 2-series cell battery pack is compared to a factory programmed internal reference voltage. If either cell reaches an overvoltage condition, the OUT pin changes from low to high state.

The bq2920x can perform automatic voltage-based cell imbalance correction. Balancing can start when the cell voltages are different by nominally 30 mV or more and stops when the difference is nominally 0 mV. Cell balancing is enabled and disabled by the CB_EN pin.

The bq2920x device is a secondary overvoltage protection IC for 2-series cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit and automatic cell imbalance correction.

The voltage of each cell in a 2-series cell battery pack is compared to a factory programmed internal reference voltage. If either cell reaches an overvoltage condition, the OUT pin changes from low to high state.

The bq2920x can perform automatic voltage-based cell imbalance correction. Balancing can start when the cell voltages are different by nominally 30 mV or more and stops when the difference is nominally 0 mV. Cell balancing is enabled and disabled by the CB_EN pin.

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Alle anzeigen 2

	Typ	Titel		Datum
*	Data sheet	bq2920x Voltage Protection with Automatic Cell Balance for 2-Series Cell Li-Ion Batteries datasheet (Rev. C)	PDF \| HTML	01 Mär 2016
	Technical article	Battery-charging tips for video doorbell applications	PDF \| HTML	15 Apr 2019

Design und Entwicklung

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Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
VSON (DRB)	8	Ultra Librarian

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BQ29209

Spannungsschutz für den Automobilbereich mit automatischem Zellausgleich für Li-Ionen-Akkus mit 2 Ze

BQ29209

Produktdetails

Technische Dokumentation

Design und Entwicklung

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