BQ24751RHDRG4 Datasheet, PDF (11/38 Pages) Texas Instruments – Host-controlled Multi-chemistry Battery Charger

bq24751
www.ti.com............................................................................................................................................... SLUS734D – DECEMBER 2006 – REVISED MARCH 2009
TYPICAL CHARACTERISTICS
Table of Graphs⁽¹⁾
Y
X
VREF Load and Line Regulation
vs Load Current
REGN Load and Line Regulation
vs Load Current
BAT Voltage
vs VADJ/VDAC Ratio
Charge Current
vs SRSET/VDAC Ratio
Input Current
vs ACSET/VDAC Ratio
BAT Voltage Regulation Accuracy
vs Charge Current
BAT Voltage Regulation Accuracy
Charge Current Regulation Accuracy
Input Current Regulation (DPM) Accuracy
V_IADAPT Input Current Sense Amplifier Accuracy
Input Regulation Current (DPM), and Charge Current vs System Current
Transient System Load (DPM) Response
Charge Current Regulation
vs BAT Voltage
Efficiency
vs Battery Charge Current
Battery Removal (from Constant Current Mode)
ACDRV and BATDRV Startup
REF and REGN Startup
System Selector on Adapter Insertion with 390-µF SYS-to-PGND System Capacitor
System Selector on Adapter Removal with 390-µF SYS-to-PGND System Capacitor
System Selector LEARN Turn-On with 390-µF SYS-to-PGND System Capacitor
System Selector LEARN Turn-Off with 390-µF SYS-to-PGND System Capacitor
System Selector on Adapter Insertion
Selector Gate Drive Voltages, 700 ms delay after ACDET
Charger on Adapter Removal
Charge Enable / Disable and Current Soft-Start
Nonsynchronous to Synchronous Transition
Synchronous to Nonsynchronous Transition
Near 100% Duty Cycle Bootstrap Recharge Pulse
Battery Shorted Charger Response, Over Current Protection (OCP) and Charge Current Regulation
Continuous Conduction Mode (CCM) Switching Waveforms
Discontinuous Conduction Mode (DCM) Switching Waveforms
FIgure
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Figure 33
(1) Test results based on Figure 2 application schematic. V_IN = 20 V, V_BAT = 3-cell LiIon, I_CHG = 3 A, I_{ADAPTER_LIMIT} = 4 A, T_A = 25°C, unless
otherwise specified.
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