BQ24600_1 Datasheet, PDF (18/31 Pages) Texas Instruments – Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with Low Iq

bq24600
SLUS891 – FEBRUARY 2010
Table 2. Typical Inductor, Capacitor, and Sense Resistor Values as a Function
of Charge Current
Charge Current
Output Inductor Lo
Output Capacitor Co
Sense Resistor
2A
3.3 mH
20 mF
10 mΩ
4A
3.3 mH
20 mF
10 mΩ
6A
2.2 mH
30 mF
10 mΩ
8A
1.5 mH
40 mF
10 mΩ
10A
1.5 mH
40 mF
10 mΩ
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Charge Status Outputs
The open-drain STAT outputs indicate various charger operations as shown in Table 3. These status pins can be
used to drive LEDs or communicate with the host processor. Note that OFF indicates that the open-drain
transistor is turned off.
Table 3. STAT Pin Definition for bq24600
CHARGE STATE
Charge in progress
Charge complete (PG = LOW)
Sleep mode (PG = HIGH)
Charge suspend, timer fault, input over-voltage, battery
absent
STAT
ON
OFF
OFF
BLINK (0.5 Hz)
18
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