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BQ24150A Datasheet, PDF (22/41 Pages) Texas Instruments – Fully Integrated Switch-Mode One-Cell Li-Ion Charger With Full USB Compliance and USB-OTG Support
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bq24150A
bq24151A
SLUS931 – APRIL 2009 ..................................................................................................................................................................................................... www.ti.com
MODE
IN Condition
OUT Condition
I2C
Buck
I(SHORT)
Boost
Q1
Note
Table 3. State Machine Table 1 of bq24150A/1A
POWER DOWN
VBUS < VUVLO
V(AUXPWR) < V(SHORT)
VBUS > VUVLO
or V(AUXPWR) > V(SHORT)
Off
Off
Off
Off
Off
POR when out
CHARGE CONFIGURE
OPA_MODE = 0
HZ_MODE = 0
OTG Inactive
VBUS > VUVLO
VBUS < VBUS(MIN)
or
CE = HIGH
or
Faults During Charge
OPA_MODE = 1
or HZ_MODE = 1
or VBUS < VUVLO
or OTG Active
On
Off
Off
Off
On/Off
SHORT CIRCUIT
OPA_MODE = 0
HZ_MODE = 0
OTG Inactive
VBUS > VBUS(MIN)
V(AUXPWR) < V(SHORT)
CE = Low
No Faults
OPA_MODE = 1
or HZ_MODE = 1
or VBUS < VBUS(MIN)
or V(AUXPWR) > V(SHORT)
or CE = HIGH
or Faults
or OTG Active
On
Off
On
Off
On
PWM CHARGE
OPA_MODE = 0
HZ_MODE = 0
OTG Inactive
VBUS > VBUS(MIN)
V(AUXPWR) > V(SHORT)
CE = Low
No Faults
OPA_MODE = 1
or HZ_MODE = 1
or VBUS < VBUS(MIN)
or V(AUXPWR) < V(SHORT)
or CE = HIGH
or Faults
or OTG Active
On
On
Off
Off
On
Table 4. State Machine Table 2 of bq24150A/1A
MODE
IN Condition
HIGH IMPEDANCE
HZ_MODE = 1
or
VBUS < VUVLO and
V(AUXPWR) > V(SHORT)
OUT Condition
I2C
Buck
I(SHORT)
Boost
Q1
HZ_MODE = 0 or OTG Active
On
Off
Off
Off
Off
BOOST CONFIGURE
HZ_MODE = 0
(OPA_MODE = 1
or OTG active)
V(AUXPWR) > V(BATMIN)
Ready To Start Up
HZ_MODE = 1 or OPA_MODE = 0
or V(AUXPWR) > V(BATMIN)
or Boost Start Up Finished
On
Off
Off
Off
On/Off (1)
BOOST
HZ_MODE = 0
(OPA_MODE = 1 or OTG active)
V(AUXPWR) > V(BATMIN)
Start Up Finished
No Faults
(OPA_MODE = 0 and OTG Inactive)
or (HZ_MODE = 1 and OTG Inactive)
or V(AUXPWR) < V(BATMIN)or Faults
On
Off
Off
On
On
(1) Q1 is OFF when VBUS is shorted to ground.
22
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