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| BQ24230 Datasheet, PDF (12/33 Pages) Texas Instruments – USB-FRIENDLY LITHIUM-ION BATTERY CHARGER AND POWER-PATH MANAGEMENT IC | |||
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bq24230
bq24232
SLUS821A â OCTOBER 2008 â REVISED DECEMBER 2008 .......................................................................................................................................... www.ti.com
EXPLANATION OF DEGLITCH TIMES AND COMPARATOR HYSTERESIS
Figures not to scale
VOVP
VOVP - Vhys(OVP)
VIN
VBAT + VIN(DT)
VBAT + VIN(DT) - Vhys(INDT)
UVLO
UVLO - Vhys(UVLO)
t < tDGL(OVP)
Typical Input Voltage
Operating Range
PGOOD
tDGL(PGOOD)
tDGL(OVP)
tDGL(PGOOD)
Figure 20. Power Up, Power Down
tDGL(NO-IN)
VLOWV
VBAT
t < tDGL1(LOWV)
tDGL1(LOWV)
tDGL1(LOWV)
tDGL2(LOWV)
t < tDGL2(LOWV)
ICHG
IPRE-CHG
Pre-Charge
Fast-Charge
Fast-Charge
Pre-Charge
Figure 21. Pre- to Fast-Charge, Fast- to Precharge Transition â tDGL1(LOWV), tDGL2(LOWV)
VRCH
VBAT
t < tDGL(RCH)
tDGL(RCH)
Re-Charge
Figure 22. Recharge â tDGL(RCH)
12
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Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): bq24230 bq24232
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