BQ24704 Datasheet, PDF (12/31 Pages) Texas Instruments – Low Cost, Host-Controlled Li-Ion and Li-Polymer Battery Charger With Low Iq

bq24704
SLUS838 – MAY 2009........................................................................................................................................................................................................ www.ti.com
BATTERY REMOVAL
REF AND REGN STARTUP
V_BAT
V_PH
I_BAT
t − Time = 5 ms/div
Figure 17.
CHARGER ON ADAPTER REMOVAL
V_IN
V_BAT
I_L
t − Time = 200 ms/div
Figure 19.
NONSYNCHRONOUS TO SYNCHRONOUS TRANSITION
PH
V_ACDET
V_REF
V_REGN
t − Time = 2 ms/div
Figure 18.
CHARGE ENABLE / DISABLE AND CURRENT
SOFT-START
V_CHGEN
V_BAT
V_PH
I_BAT
t − Time = 4 ms/div
Figure 20.
SYNCHRONOUS TO NONSYNCHRONOUS TRANSITION
PH
LDRV
I_L
t − Time = 1 ms/div
Figure 21.
NEAR 100% DUTY CYCLE BOOTSTRAP RECHARGE
PULSE
Figure 23.
LDRV
I_L
t − Time = 1 ms/div
Figure 22.
BATTERY SHORTED CHARGER RESPONSE,
OVERCURRENT PROTECTION (OCP) AND CHARGE
CURRENT REGULATION
Figure 24.
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