BQ24616 Datasheet, PDF (22/34 Pages) Texas Instruments – JEITA Guideline Compatible Stand-Alone Synchronous Switch-Mode Li-Ion or Li-Polymer Battery Charger with System Power Selector and Low Iq

bq24616
SLUSA49A – APRIL 2010 – REVISED MAY 2010
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Table 2. Typical Inductor, Capacitor, and Sense Resistor Values as a Function of Charge Current for
bq24616 (600 kHz Switching Frequency)
CHARGE CURRENT
Output Inductor Lo
Output Capacitor Co
Sense Resistor
2A
6.8 mH
20 mF
10 mΩ
4A
6.8 mH
20 mF
10 mΩ
6A
4.7 mH
30 mF
10 mΩ
8A
3.3 mH
40 mF
10 mΩ
10A
3.3 mH
40 mF
10 mΩ
Charge Status Outputs
The open-drain STAT1 and STAT2 outputs indicate various charger operations as shown in the table below.
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 bq24616
CHARGE STATE
Charge in progress
Charge complete
Charge suspend, timer fault, AC over-voltage, sleep mode, battery absent
STAT1
ON
OFF
OFF
STAT2
OFF
ON
OFF
22
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