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BQ25176K

Name: BQ25176K
Brand: TI
SKU: BQ25176K
Price: 0.42 USD

AKTIV

Lineares Ladegerät, 800 mA, für eine Zelle (Li-Ion oder LiFePO4) mit VINDPM und JEITA

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Datenblatt

document-pdfAcrobat BQ25176K: 800mA JEITA-Compliant Linear Battery Charger For 1-Cell Li-Ion and LiFePO4 With VINDPM and 4.5V Battery datasheet (Englisch) PDF | HTML

BQ25176K

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Rating

Catalog

Number of series cells

1

Cell chemistry

Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4

Charge current (max) (A)

0.8

Features

BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, VINDPM (Input voltage threshold to maximize adaptor power)

Vin (min) (V)

3

Vin (max) (V)

25

Absolute max Vin (max) (V)

30

Control topology

Linear

Battery charge voltage (min) (V)

3.5

Battery charge voltage (max) (V)

4.4, 4.58

Control interface

Standalone (RC-Settable)

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Number of series cells

1

Cell chemistry

Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4

Charge current (max) (A)

0.8

Features

BAT temp thermistor monitoring (JEITA profile), IC thermal regulation, VINDPM (Input voltage threshold to maximize adaptor power)

Vin (min) (V)

3

Vin (max) (V)

25

Absolute max Vin (max) (V)

30

Control topology

Linear

Battery charge voltage (min) (V)

3.5

Battery charge voltage (max) (V)

4.4, 4.58

Control interface

Standalone (RC-Settable)

Operating temperature range (°C)

-40 to 125

WSON (DSG)

8

4 mm² 2 x 2

Input voltage up to 30V tolerant
Input Voltage Based Dynamic Power Management (VINDPM)
Automatic Sleep Mode for low power consumption
- 350nA battery leakage current
- 80µA 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: 4.05V, 4.35V, 4.4V, 4.53V, 4.58V
  - LiFePO4: 3.5V, 3.6V, 3.7V
- ISET to set charge current from 10mA to 800mA
High accuracy
- ±0.5% charge voltage accuracy
- ±10% charge current accuracy
Charging features
- Precharge current 20% of ISET
- Termination current 10% of ISET
- NTC thermistor input to monitor battery temperature
- TS pin for charging operation control over JEITA range
- Open-drain output for status and fault indication
Integrated fault protection
- 26V IN overvoltage protection
- VSET based OUT overvoltage protection
- 1000mA 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 30V tolerant
Input Voltage Based Dynamic Power Management (VINDPM)
Automatic Sleep Mode for low power consumption
- 350nA battery leakage current
- 80µA 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: 4.05V, 4.35V, 4.4V, 4.53V, 4.58V
  - LiFePO4: 3.5V, 3.6V, 3.7V
- ISET to set charge current from 10mA to 800mA
High accuracy
- ±0.5% charge voltage accuracy
- ±10% charge current accuracy
Charging features
- Precharge current 20% of ISET
- Termination current 10% of ISET
- NTC thermistor input to monitor battery temperature
- TS pin for charging operation control over JEITA range
- Open-drain output for status and fault indication
Integrated fault protection
- 26V IN overvoltage protection
- VSET based OUT overvoltage protection
- 1000mA overcurrent protection
- 125°C thermal regulation; 150°C thermal shutdown protection
- OUT short-circuit protection
- VSET, ISET pins short/open protection

The BQ25176K is an integrated 800mA linear charger for 1-cell Li-Ion, Li-Polymer, and LiFePO4 batteries targeted at space-limited portable applications.The device has a single power output that charges the battery. The system load can be placed in parallel with the battery, as long as the average system load does not prevent the battery from charging fully within the safety timer duration. 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 BQ25176K is an integrated 800mA linear charger for 1-cell Li-Ion, Li-Polymer, and LiFePO4 batteries targeted at space-limited portable applications.The device has a single power output that charges the battery. The system load can be placed in parallel with the battery, as long as the average system load does not prevent the battery from charging fully within the safety timer duration. 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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	Typ	Titel		Datum
*	Data sheet	BQ25176K: 800mA JEITA-Compliant Linear Battery Charger For 1-Cell Li-Ion and LiFePO4 With VINDPM and 4.5V Battery datasheet	PDF \| HTML	14 Aug 2025
	EVM User's guide	BQ25176KEVM Evaluation Module User's Guide	PDF \| HTML	28 Mai 2025

Design und Entwicklung

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Evaluierungsplatine

BQ25176KEVM — BQ25176K – Evaluierungsmodul

Das Evaluierungsmodul (EVM) BQ25176K umfasst den BQ25176K-IC, den LDO TPS7B8133 und Unterstützungsschaltkreise, die für den Betrieb der Evaluierungsplatine erforderlich sind. Zur Stromversorgung des EVM und zum Laden einer 1-Zellen-Batterie wird ein externes 5-V-Netzteil benötigt. Ladespannung VREG (...)

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BQ25176K

Lineares Ladegerät, 800 mA, für eine Zelle (Li-Ion oder LiFePO4) mit VINDPM und JEITA

BQ25176K

Produktdetails

Technische Dokumentation

Design und Entwicklung

BQ25176KEVM — BQ25176K – Evaluierungsmodul

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