Texas Instruments BQ24721RHBTG4
- Part Number:
- BQ24721RHBTG4
- Manufacturer:
- Texas Instruments
- Ventron No:
- 3250056-BQ24721RHBTG4
- Description:
- IC SYNC BATT PACK CHARGER 32-QFN
- Datasheet:
- BQ24721RHBTG4
Description
The bq24721 is a highly efficient synchronous battery pack charger with a high level of integration for portable applications. It features a high-performance analog front-end that interfaces with the system power management microcontroller through a simplified SBS-like SMBus interface.
Features
High efficiency NMOS-NMOS synchronous buck converter with user-selectable 300 kHz or 500 kHz frequency
bq24721C offers softer turn-on, stronger turn-off
SBS-like SMBus interface for control and status communications with host
Programmable battery voltage, charge current, and AC adapter current via SBS-like SMBus interface
0.4% charge voltage regulation accuracy
3% charge current regulation accuracy
3% adapter current regulation accuracy
Dynamic power management (DPM)
2% accuracy integrated charge and AC adapter 20x current amplifier output
3-cell and 4-cell Li-Ion voltage regulation
9 V, 12 V-14.4 V, 16 V-19.2 V
Battery pack voltage operating range: 0 V-19.2 V
AC adapter operating range: 8 V-28 V
99.5% max duty cycle
Internal soft start
Integrated 5% 5-V LDO when AC adapter applied
6-V drive supply voltage for increased efficiency
Reverse battery to adapter discharge protection
Battery/adapter to system power selector function
Charge and adapter overcurrent protection
Battery thermistor sense, TS, comparators
Available in 32-pin 5x5-mm QFN package
Applications
Portable notebook computers
Portable DVD players
Webpads, PC tablets
The bq24721 is a highly efficient synchronous battery pack charger with a high level of integration for portable applications. It features a high-performance analog front-end that interfaces with the system power management microcontroller through a simplified SBS-like SMBus interface.
Features
High efficiency NMOS-NMOS synchronous buck converter with user-selectable 300 kHz or 500 kHz frequency
bq24721C offers softer turn-on, stronger turn-off
SBS-like SMBus interface for control and status communications with host
Programmable battery voltage, charge current, and AC adapter current via SBS-like SMBus interface
0.4% charge voltage regulation accuracy
3% charge current regulation accuracy
3% adapter current regulation accuracy
Dynamic power management (DPM)
2% accuracy integrated charge and AC adapter 20x current amplifier output
3-cell and 4-cell Li-Ion voltage regulation
9 V, 12 V-14.4 V, 16 V-19.2 V
Battery pack voltage operating range: 0 V-19.2 V
AC adapter operating range: 8 V-28 V
99.5% max duty cycle
Internal soft start
Integrated 5% 5-V LDO when AC adapter applied
6-V drive supply voltage for increased efficiency
Reverse battery to adapter discharge protection
Battery/adapter to system power selector function
Charge and adapter overcurrent protection
Battery thermistor sense, TS, comparators
Available in 32-pin 5x5-mm QFN package
Applications
Portable notebook computers
Portable DVD players
Webpads, PC tablets
Texas Instruments BQ24721RHBTG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments BQ24721RHBTG4.
- MountSurface Mount
- Mounting TypeSurface Mount
- Package / Case32-VFQFN Exposed Pad
- Operating Temperature-40°C~85°C TA
- PackagingTape & Reel (TR)
- Pbfree Codeno
- Part StatusObsolete
- Moisture Sensitivity Level (MSL)2 (1 Year)
- Number of Terminations32
- ECCN CodeEAR99
- HTS Code8542.39.00.01
- SubcategoryPower Management Circuits
- Terminal PositionQUAD
- Terminal FormNO LEAD
- Peak Reflow Temperature (Cel)NOT SPECIFIED
- Number of Functions1
- Supply Voltage8V
- Terminal Pitch0.5mm
- Reflow Temperature-Max (s)NOT SPECIFIED
- Base Part NumberBQ24721
- Pin Count32
- JESD-30 CodeS-PQCC-N32
- Qualification StatusNot Qualified
- Output Voltage19.2V
- Operating Supply Voltage24V
- Supply Voltage-Min (Vsup)8V
- Number of Channels1
- InterfaceI2C
- Analog IC - Other TypePOWER SUPPLY MANAGEMENT CIRCUIT
- Adjustable ThresholdNO
- Fault ProtectionOver Current
- Battery ChemistryMulti-Chemistry
- Number of Cells3 ~ 4
- Programmable FeaturesCurrent
- Battery Pack Voltage19.2V Max
- Height Seated (Max)1mm
- Length5mm
- Width5mm
- RoHS StatusROHS3 Compliant
- Lead FreeContains Lead
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