BQ24070RHLT . ,Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4V 20-VQFN -40 to 85Features... 19 Application and Implementation...... 202 Applications..... 19.1 Application Informat ..
BQ24070RHLTG4 ,Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4V 20-VQFN -40 to 85Features 3 DescriptionThe bq24070 and bq24071 are highly integrated Li-1• Small 3.5-mm × 4.5-mm VQF ..
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BQ24070RHLR-BQ24070RHLRG4-BQ24070RHLT .-BQ24070RHLTG4
Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4V
BAT
OUT
bq24070/1
PACK+
PACK−
System
VDC
GND AdapterUDG−04082
mΩ
(2)The bq24070 and bq24071 are Small 3.5-mm× 4.5-mm VQFN Package ion linear charger and system power-path• Designedfor Single-Cell Li-Ion-or Li-Polymer- management devices targeted at space-limitedBased Portable Applications portable applications. The bq2407x devices offer DC Integrated Dynamic Power-Path Management supply (AC adapter) power-path management with
autonomous power-source selection, power FETs(DPPM) Feature Allowing the AC Adapterto
and current sensors, high-accuracy current andSimultaneously Power the System and Charge the
voltage regulation, charge status, and chargeBattery termination,ina single monolithic device.• Power Supplement Mode Allows Batteryto
The bq2407x devices power the system whileSupplement the AC Input Current
independently charging the battery. This feature• Autonomous Power Source Selection (AC Adapter reduces the charge and discharge cycles on theor BAT) battery, allows for proper charge termination, and• Supports Upto2A Total Current allows the systemto run with an absentor defective
battery pack. This feature also allows for the system• Thermal Regulation for Charge Control instantaneously turn on from an external power• Charge Status Outputsfor LEDor System sourcein the caseofa deeply discharged batteryInterface Indicates Charge and Fault Conditions pack. The IC design is focused on supplying• Reverse Current, Short-Circuit, and Thermal continuous powerto the system when available fromProtection the AC adapteror battery sources. Power Good Status Outputs
Device Information(1)• 4.4-V and 6-V Options for System OutputRegulation Voltage
2 Applications(1) Forall available packages, see the orderable addendumat• Smart Phones and PDAs
the endofthe datasheet.• MP3 Players Digital Cameras and Handheld Devices Internet Appliances
Simplified Schematic(1) Diagramfor more feature information. disconnectedto prevent
