BQ24232HA

Name: BQ24232HA
Brand: TI
SKU: BQ24232HA
Price: 0.882 USD

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USB-affines 0,5-A-Li-Ion-Ladegerät mit Power-Path, 10,5 V Überspannungsschutz

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Datenblatt

document-pdfAcrobat bq24232HA USB-Friendly Lithium-Ion Battery Charger and Power-Path Management IC datasheet (Englisch) PDF | HTML

BQ24232HA

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Number of series cells

1

Charge current (max) (A)

0.5

Vin (max) (V)

10.2

Cell chemistry

Li-Ion/Li-Polymer

Battery charge voltage (min) (V)

4.35

Battery charge voltage (max) (V)

4.35

Absolute max Vin (max) (V)

28

Control topology

Linear

Control interface

Standalone (RC-Settable)

Features

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

Vin (min) (V)

4.35

Rating

Catalog

Operating temperature range (°C)

-5 to 125

Number of series cells

1

Charge current (max) (A)

0.5

Vin (max) (V)

10.2

Cell chemistry

Li-Ion/Li-Polymer

Battery charge voltage (min) (V)

4.35

Battery charge voltage (max) (V)

4.35

Absolute max Vin (max) (V)

28

Control topology

Linear

Control interface

Standalone (RC-Settable)

Features

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

Vin (min) (V)

4.35

Rating

Catalog

Operating temperature range (°C)

-5 to 125

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
  (V_IN – DPM) for Protection Against Poor USB
  Sources
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 500-mA Charge Current With
Current Monitoring Output (ISET)
Programmable Input Current Limit up to 500 mA
for Wall Adapters
Programmable Termination Current
Programmable Precharge 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
Small 3 mm × 3 mm 16-Lead QFN Package

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
  (V_IN – DPM) for Protection Against Poor USB
  Sources
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 500-mA Charge Current With
Current Monitoring Output (ISET)
Programmable Input Current Limit up to 500 mA
for Wall Adapters
Programmable Termination Current
Programmable Precharge 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
Small 3 mm × 3 mm 16-Lead QFN Package

The bq24232HA device is a highly integrated Li-ion linear charger and system power-path management device targeted at space-limited portable applications. The device operates from either a USB port or ac adapter and supports charge currents between 25 mA and 500 mA. The high-input-voltage range with input overvoltage protection supports low-cost, unregulated adapters. The USB input current limit accuracy and start-up sequence allow the bq24232HA to meet USB-IF inrush current specification. Additionally, the input dynamic power management (V_IN – DPM) prevents the charger from crashing poorly designed or incorrectly configured USB sources.

The bq24232HA 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, this enables instant system turn-on even with a totally discharged battery. The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents, 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 bq24232HA device is a highly integrated Li-ion linear charger and system power-path management device targeted at space-limited portable applications. The device operates from either a USB port or ac adapter and supports charge currents between 25 mA and 500 mA. The high-input-voltage range with input overvoltage protection supports low-cost, unregulated adapters. The USB input current limit accuracy and start-up sequence allow the bq24232HA to meet USB-IF inrush current specification. Additionally, the input dynamic power management (V_IN – DPM) prevents the charger from crashing poorly designed or incorrectly configured USB sources.

The bq24232HA 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, this enables instant system turn-on even with a totally discharged battery. The power-path management architecture also permits the battery to supplement the system current requirements when the adapter cannot deliver the peak system currents, 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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Alle anzeigen 3

	Typ	Titel		Datum
*	Data sheet	bq24232HA USB-Friendly Lithium-Ion Battery Charger and Power-Path Management IC datasheet	PDF \| HTML	05 Mai 2016
	Application note	Configuring Standalone Linear Power Path Chargers (Rev. A)	PDF \| HTML	06 Apr 2020
	Application note	Dynamic Power-Path Mgmt & Dynamic Power Mgmt (Rev. A)		01 Mai 2018

Design und Entwicklung

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Gerberdatei

Linear Charger NTC Calculator

SLUC670.ZIP (350 KB)

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Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
VQFN (RGT)	16	Ultra Librarian

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BQ24232HA

USB-affines 0,5-A-Li-Ion-Ladegerät mit Power-Path, 10,5 V Überspannungsschutz

BQ24232HA

Produktdetails

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