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BQ24152 Datasheet(PDF) 22 Page - Texas Instruments

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Part No. BQ24152
Description  Fully Integrated Switch-Mode One-Cell Li-Ion Charger with Full USB Compliance and USB-OTG Support
Download  38 Pages
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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BQ24152 Datasheet(HTML) 22 Page - Texas Instruments

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POWERDOWN
CHARGE
CONFIGURE
BOOST
CONFIGURE
BOOST
HIGH
IMPEDANCE
SHORT
CIRCUIT
PWMCHARGE
VBUS>VUVLO
VAUXPWR<VLOWV
VAUXPWR>VSHORT, VBUS>VBUS(MIN)
VBUS>VSLP_ENT+VSLP_EXIT
NOFAULTS
HZ_MODE=1
OPA_MODE=1
HZ_MODE=0
VAUXPWR<VSHORT
orVBUS<VBUS(MIN)
orFAULTS
VAUXPWR>VSHORT
orVBUS<VBUS(MIN)
orFAULTS
VAUXPWR>VPOR
V
BUS>POR
START UP
NoFAULTS
HZ_MODE=1
Or
VAUXPWR<VLOWV
OPA_MODE=0
orFAULTS
OPA_MODE=1
HZ_MODE=0
VAUXPWR>VLOWV
HZ_MODE=1
or
VAUXPWR<VBATMIN
OPA_MODE=1
HZ_MODE=0
HZ_MODE=1
orVBUS<VUVLO, VAUXPWR>VSHORT
VBUS>VUVLO
HZ_MODE=0, OPA_MODE=0
VAUXPWR<VSHORT
VBUS>VBUS(MIN)
VBUS>VSLP_ENT+VSLP_EXIT
NOFAULTS
OPA_MODE=0
ANY STATE
VBUS<VUVLO
VAUXPWR<VSHORT
bq24152
SLUS847 – JUNE 2008 ...................................................................................................................................................................................................... www.ti.com
Table 4. State Machine Table 2 of bq24152
MODE
HIGH IMPEDANCE
BOOST CONFIGURE
BOOST
OPA_MODE = 1
OPA_MODE = 1
OPA_MODE = 1
or OTG inactive
or HZ_MODE = 1
HZ_MODE = 0
VBUS < UVLO, V(AUXPWR) > V(SHORT)
or OTG active
or OTG active
IN Condition
or Boost Configure,
V(AUXPWR) > V(LOWV)
V(AUXPWR) > V(BAT)MIN
V(AUXPWR) + V(LOWV)
Ready To Start Up
Start Up Finished
or Boost, V(AUXPWR) +V(BAT)MIN
or Faults During Boost
or No Faults
HZ_MODE = 0, OPA_MODE = 0
OPA_MODE = 0
OPA_MODE = 0
VBUS > UVLO
OTG Inactive
OTG Inactive
or HZ_MODE = 0, OPA_MODE = 1
OUT Condition
or HZ_MODE = 1
or HZ_MODE = 1
V(AUXPWR) > V(LOWV)
or V(AUXPWR) > V(LOWV)
or V(AUXPWR) > V(BAT)MIN
or V(AUXPWR) +V(SHORT)
Boost Start Up Finished
or Faults
or OTG Active
On
On
On
Off
Off
Off
Off
Off
Off
Off
Off
On
Off
On/Off(1)
On
(1)
Q1 is OFF when VBUS is shorted to ground.
Figure 26. State Diagram for bq24152
22
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Copyright © 2008, Texas Instruments Incorporated
Product Folder Link(s): bq24152


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