Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- TYPICAL APPLICATION
- ABSOLUTE MAXIMUM RATINGS
- RECOMMENDED OPERATING CONDITIONS
- DISSIPATION RATINGS
- ELECTRICAL CHARACTERISTICS
- TYPICAL OPERATING CHARACTERISTICS
- DEVICE INFORMATION
- FUNCTIONAL DESCRIPTIONS
- BATTERY CHARGER
- Autononous Power Source Selection
- Battery Pre-Conditioning
- Battery Charge Current
- Battery Voltage Regulation
- Charge Taper Detection, Termination and Regharge
- Sleep Mode for Charger
- Operation Modes
- Status Outputs
- PG Output (Power Good)
- CE Input (Charge Enable)
- Thermal Shutdown and Protection
- TImer Fault Recovery
- DC-DC CONVERTER
- BATTERY CHARGER
- APPLICATION INFORMATION
- ADJUSTABLE OUTPUT VOLTAGE VERSION (bq25015)
- FIXED OUTPUT VOLTAGE VERSION (bq25017)
- INPUT CAPACITOR SELECTION
- CHARGER OUTPUT CAPACITOR (DC-DC CONVERTER INPUT CAPACITOR) SELECTION
- DC-DC CONVERTER OUTPUT CAPACITOR SELECTION
- DC-DC CONVERTER OUTPUT INDUCTOR SELECTION
- CHARGING WHILE UNDER LOAD
- THERMAL CONSIDERATIONS
- PCB LAYOUT CONSIDERATIONS

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TYPICAL OPERATING CHARACTERISTICS
V =1.8V,
FPWM=High
O
50
55
60
65
70
75
80
85
90
95
100
0 50 100 150 200 250 300
I -LoadCurrent-mA
L
Efficiency-%
Vbat=2.7V
Vbat=3.7V
Vbat=4.2V
V =1.8V,
FPWM=Low
O
50
55
60
65
70
75
80
85
90
95
100
0 50 100 150 200 250 300
I -LoadCurrent-mA
L
Efficiency-%
Vbat=2.7V
Vbat=3.7V
Vbat=4.2V
V =1.5V,
FPWM=High
O
50
55
60
65
70
75
80
85
90
95
100
0 50 100 150 200 250 300
I -LoadCurrent-mA
L
Efficiency-%
Vbat=2.7V
Vbat=4.2V
Vbat=3.7V
50
55
60
65
70
75
80
85
90
95
100
0 50 100 150 200 250 300
I -LoadCurrent-mA
L
Efficiency-%
Vbat=2.7V
Vbat=3.7V
Vbat=4.2V
V =1.5V,
FPWM=Low
O
bq25015
bq25017
SLUS721A – DECEMBER 2006 – REVISED MARCH 2007
EFFICIENCY EFFICIENCY
vs vs
LOAD CURRENT LOAD CURRENT
Figure 1. Figure 2.
EFFICIENCY EFFICIENCY
vs vs
LOAD CURRENT LOAD CURRENT
Figure 3. Figure 4.
SHORT CIRCUIT INDUCTOR CURRENT
Figure 5.
6
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