BQ24120

AKTIV

Eigenständiger 1–2-Zellen-Synchron-Abwärts-Batterielader mit 2 A und verbesserter EMI-Leistung

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Datenblatt

document-pdfAcrobat bq2412x Single-Chip Switched-Mode, Li-Ion, and Li-Polymer Charge-Management IC With Enhanced EMI Performance (bqSWITCHER™) datasheet (Rev. H) (Englisch) PDF | HTML

BQ24120

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Number of series cells

1

Charge current (max) (A)

2

Vin (max) (V)

16

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)

20

Control topology

Switch-Mode Buck

Control interface

Standalone (RC-Settable)

Features

BAT temp thermistor monitoring (hot/cold profile), Input OVP

Vin (min) (V)

4.35

Rating

Catalog

Operating temperature range (°C)

-40 to 85

Number of series cells

1

Charge current (max) (A)

2

Vin (max) (V)

16

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)

20

Control topology

Switch-Mode Buck

Control interface

Standalone (RC-Settable)

Features

BAT temp thermistor monitoring (hot/cold profile), Input OVP

Vin (min) (V)

4.35

Rating

Catalog

Operating temperature range (°C)

-40 to 85

VQFN (RHL)

20

15.75 mm² 4.5 x 3.5

Enhanced EMI Performance
Integrated Power FETs For Up To 2-A Charge
Rate
Suitable For 1-, 2-, or 3-Cell Li-Ion and Li-Polymer
Battery Packs
Synchronous Fixed-Frequency PWM Controller
Operating at 1.1 MHz With 0% to 100% Duty
Cycle
High-Accuracy Voltage and Current Regulation
Status Outputs For LED or Host Processor
Interface Indicates Charge-In-Progress, Charge
Completion, Fault, and AC-Adapter Present
Conditions
20-V Absolute Maximum Voltage Rating on IN and
OUT Pins
Accurate High-Side Battery Current Sensing
Battery Temperature Monitoring
Automatic Sleep Mode for Low Power
Consumption
Reverse Leakage Protection Prevents Battery
Drainage
Thermal Shutdown and Protection
Built-In Battery Detection
Available in 20-pin 3.5-mm × 4.5-mm VQFN
Package

Enhanced EMI Performance
Integrated Power FETs For Up To 2-A Charge
Rate
Suitable For 1-, 2-, or 3-Cell Li-Ion and Li-Polymer
Battery Packs
Synchronous Fixed-Frequency PWM Controller
Operating at 1.1 MHz With 0% to 100% Duty
Cycle
High-Accuracy Voltage and Current Regulation
Status Outputs For LED or Host Processor
Interface Indicates Charge-In-Progress, Charge
Completion, Fault, and AC-Adapter Present
Conditions
20-V Absolute Maximum Voltage Rating on IN and
OUT Pins
Accurate High-Side Battery Current Sensing
Battery Temperature Monitoring
Automatic Sleep Mode for Low Power
Consumption
Reverse Leakage Protection Prevents Battery
Drainage
Thermal Shutdown and Protection
Built-In Battery Detection
Available in 20-pin 3.5-mm × 4.5-mm VQFN
Package

The bqSWITCHER™ series are highly integrated Li-ion and Li-polymer switched-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small, thermally enhanced QFN package.

The bqSWITCHER charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on user-selectable minimum current level. A programmable charge timer provides a safety backup for charge termination. The bqSWITCHER automatically restarts the charge cycle if the battery voltage falls below an internal threshold. The bqSWITCHER automatically enters sleep mode when V_CC supply is removed.

The bqSWITCHER™ series are highly integrated Li-ion and Li-polymer switched-mode charge management devices targeted at a wide range of portable applications. The bqSWITCHER™ series offers integrated synchronous PWM controller and power FETs, high-accuracy current and voltage regulation, charge preconditioning, charge status, and charge termination, in a small, thermally enhanced QFN package.

The bqSWITCHER charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on user-selectable minimum current level. A programmable charge timer provides a safety backup for charge termination. The bqSWITCHER automatically restarts the charge cycle if the battery voltage falls below an internal threshold. The bqSWITCHER automatically enters sleep mode when V_CC supply is removed.

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Alle anzeigen 3

	Typ	Titel		Datum
*	Data sheet	bq2412x Single-Chip Switched-Mode, Li-Ion, and Li-Polymer Charge-Management IC With Enhanced EMI Performance (bqSWITCHER™) datasheet (Rev. H)	PDF \| HTML	30 Nov 2015
	User guide	Using the bq24120/3 (bqSwitcher)(TM) (Rev. A)		05 Nov 2007
	Application note	Implementations of Battery Charger and Power-Path Mgmt System Using bq241xx		06 Jun 2006

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VQFN (RHL)	20	Ultra Librarian

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BQ24120

Eigenständiger 1–2-Zellen-Synchron-Abwärts-Batterielader mit 2 A und verbesserter EMI-Leistung

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