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BQ24715RGRR
2-3 Cell Li+ Battery SMBus NVDC-1 Charge Controller with N-Channel MOSFET Selectors
To System
Adaptor
Ultra-Fast
DPM
Ultra-Low Quiescent
Current
Driver
6-24V
Support CPU Turbo Mode
PMOS BAT
FET Driver
Iin
Ichg
Enhanced Safety
Features
OCP, OVP,
FET Short
NVDC-1
Charger
Controller
Features 6-24V Input SMBus NVDC-1 2-3S Battery
Charger Controller System Instant-on Operation with No Batteryor
Deeply Discharged Battery Ultra-Fast Transient Responseof 100µs Ultra-Low Quiescent Currentof 500 µA and High
PFM Light Load Efficiency 80%at 20mA loadto
Meet Energy Star and ErP Lot6 Switching Frequency: 600kHz/800kHz/1MHz Programmable System/Charge Voltage (16
mV/step), Input/Charge Current (64 mA/step) with
High Accuracy ±0.5% Charge Voltage Regulation ±3% Input/Charge Current Regulation ±2% 40x Input/16x Discharge Current Monitor
Output Support Battery LEARN Function Maximize CPU Performance with Deeply
Discharged Batteryor No Battery Integrated NMOS ACFET and RBFET Driver 20-pin 3.5x 3.5 mm2 QFN Package
Applications Ultrabook, Notebook, and Tablet PC Industrial and Medical Equipment Portable Equipment
DescriptionThe bq24715 isa NVDC-1 synchronous battery
charge controller with low quiescent current, high light
load efficiency for 2Sor 3S Li-ion battery charging
applications, offering low component count.
The power path management allows the systemtobe
regulatedat battery voltage but does not drop below
the programmable system minimum voltage.
The bq24715 provides N-channel ACFET and RBFET
drivers for the power path management.It also
provides driverof the external P-channel battery FET.
The loop compensationis fully integrated.
The bq24715 has programmable 11-bit charge
voltage, 7-bit input/charge current and 6-bit minimal
system voltage with very high regulation accuracies
through the SMBus communication interface.
Thev monitors adapter currentor battery discharge
current through the IOUT pin allowing the hostto
throttle down CPU speed when needed.
The bq24715 provides extensive safety features for
over current, over voltage and MOSFET short circuit.
Device Information(1)(1) Forall available packages, see the orderable addendumat
the endofthe datasheet.
Simplified Application Diagram
