BQ24020

Name: BQ24020
Brand: TI
SKU: BQ24020
Price: 1.118 USD

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USB-/AC-Adapter 1 Li-Ion-Zellen-Ladegerät mit zwei Eingängen, mit Ladeaktivierung und Temperaturerfa

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Datenblatt

document-pdfAcrobat Single-Chip Li-Ion & Li-Pol Charger IC w/Autonomous USB-Port & AC Adapt datasheet (Rev. E) (Englisch)

BQ24020

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Datenblatt

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Produktdetails

Number of series cells

1

Charge current (max) (A)

1

Vin (max) (V)

6.5

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)

7

Control topology

Linear

Control interface

Standalone (RC-Settable)

Features

BAT temp thermistor monitoring (hot/cold profile)

Vin (min) (V)

4.5

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Number of series cells

1

Charge current (max) (A)

1

Vin (max) (V)

6.5

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)

7

Control topology

Linear

Control interface

Standalone (RC-Settable)

Features

BAT temp thermistor monitoring (hot/cold profile)

Vin (min) (V)

4.5

Rating

Catalog

Operating temperature range (°C)

-40 to 125

VSON (DRC)

10

9 mm² 3 x 3

Small 3 mm × 3 mm MLP Package
Charges and powers Systems from Either AC Adapter or USB With Autonomous power-Source Selection
Integrated USB Control With Selectable 100 mA and 500 mA Charge Rates
Ideal for Low-Dropout Charger Designs for Single-Cell Li-Ion or Li-pol Packs in Space Limited portable applications
Integrated power FET and Current Sensor for Up to 1-A Charge applications From AC Adapter
Precharge Conditioning With Safety Timer
power Good (AC Adapter Present) Status Output
Optional Battery Temperature Monitoring Before and During Charge
Automatic Sleep Mode for Low-power Consumption
APPLICATIONS
- PDAs, MP3 Players
- Digital Cameras
- Internet appliances
- Smartphones

bqTINY is a trademark of Texas Instruments.

Small 3 mm × 3 mm MLP Package
Charges and powers Systems from Either AC Adapter or USB With Autonomous power-Source Selection
Integrated USB Control With Selectable 100 mA and 500 mA Charge Rates
Ideal for Low-Dropout Charger Designs for Single-Cell Li-Ion or Li-pol Packs in Space Limited portable applications
Integrated power FET and Current Sensor for Up to 1-A Charge applications From AC Adapter
Precharge Conditioning With Safety Timer
power Good (AC Adapter Present) Status Output
Optional Battery Temperature Monitoring Before and During Charge
Automatic Sleep Mode for Low-power Consumption
APPLICATIONS
- PDAs, MP3 Players
- Digital Cameras
- Internet appliances
- Smartphones

bqTINY is a trademark of Texas Instruments.

The bqTINY-II series are highly-integrated, flexible Li-Ion linear charge and system power management devices for space-limited charger applications. In a single monolithic device, the bqTINY-II offers integrated USB-port and ac-adapter supply management with autonomous power-source selection, power-FET and current-sensor interfaces, high-accuracy current and voltage regulation, charge status, and charge termination.

The bqTINY-II automatically selects the USB-port or the ac-adapter as the power source for the system. In the USB configuration, the host can select from two preset charge rates of 100 mA or 500 mA. In the ac-adapter configuration, an external resistor sets the system or charge current.

The bqTINY-II charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The bqTINY-II automatically restarts the charge if the battery voltage falls below an internal threshold. The bqTINY-II automatically enters sleep mode when both supplies are removed.

Different versions of the bqTINY-II offer many additional features. These include a temperature-sensor input for detecting hot or cold battery packs, a power-good output (PG) indicating the presence of input power, a TTL-level charge-enable input (CE) used to disable or enable the charge process, and a TTL-level timer and taper-detect enable input (TTE) used to disable or enable the fast-charge timer and charge termination.

The bqTINY-II series are highly-integrated, flexible Li-Ion linear charge and system power management devices for space-limited charger applications. In a single monolithic device, the bqTINY-II offers integrated USB-port and ac-adapter supply management with autonomous power-source selection, power-FET and current-sensor interfaces, high-accuracy current and voltage regulation, charge status, and charge termination.

The bqTINY-II automatically selects the USB-port or the ac-adapter as the power source for the system. In the USB configuration, the host can select from two preset charge rates of 100 mA or 500 mA. In the ac-adapter configuration, an external resistor sets the system or charge current.

The bqTINY-II charges the battery in three phases: conditioning, constant current, and constant voltage. Charge is terminated based on minimum current. An internal charge timer provides a backup safety for charge termination. The bqTINY-II automatically restarts the charge if the battery voltage falls below an internal threshold. The bqTINY-II automatically enters sleep mode when both supplies are removed.

Different versions of the bqTINY-II offer many additional features. These include a temperature-sensor input for detecting hot or cold battery packs, a power-good output (PG) indicating the presence of input power, a TTL-level charge-enable input (CE) used to disable or enable the charge process, and a TTL-level timer and taper-detect enable input (TTE) used to disable or enable the fast-charge timer and charge termination.

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Alle anzeigen 4

	Typ	Titel		Datum
*	Data sheet	Single-Chip Li-Ion & Li-Pol Charger IC w/Autonomous USB-Port & AC Adapt datasheet (Rev. E)		21 Nov 2007
	Application note	QFN and SON PCB Attachment (Rev. C)	PDF \| HTML	06 Dez 2023
	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

Design und Entwicklung

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Evaluierungsplatine

BQ24020EVM — bq24020 bqTINY-II-Evaluierungsmodul

The bq24020EVM is an evaluation tool for the bq24020 linear single-cell Li-Ion charger with autonomous USB and AC adapter power management in 3x3mm2 QFN package. The EVM is a complete designed-and-tested charger circuit that allows the user to test all functions of the bq24020 and to charge a (...)

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Support-Software

TEMPSENSE-SW — Temperatursensoren-Designer-Software

The TempSense Designer software allows the user to easily design temperature sensing circuits for many of the Texas Instruments battery charger devices. A full listing of the supported devices is included under the "Support" menu in the program. The user can use the thermisters included in the (...)

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