BQ24130_15 Datasheet, PDF (18/29 Pages) Texas Instruments – 600-kHz Synchronous Switch-Mode Host-ControlledBattery/Supercapacitor Charger With 4-A Integrated MOSFETs

bq24130
SLUSAN2C – JULY 2011 – REVISED JUNE 2012
VREF
bq24130
TS
RT1
RT2
RTH
103AT
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Figure 17. TS Resistor Network
Inductor, Capacitor, and Sense Resistor Selection Guidelines
The IC provides internal loop compensation. With this scheme, best stability occurs when the LC resonant
frequency, f_o, is approximately 12 kHz – 17 kHz for IC per Equation 5:
1
f_o = _{2p LC}
(5)
Charge Status Outputs
The open-drain STAT outputs indicate various charger operations as shown in . These status pins can be used
to drive LED or communicate with the host processor. Note that OFF indicates that the open-drain transistor is
turned off.
Table 2. STAT Pin Defination
Charge State
Charge in progress
Sleep mode, Charge Disabled
Chagre suspended. Input overvoltage, Battery overvoltage
STAT
On
OFF
BLINK
18
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