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| BQ24295 Datasheet, PDF (29/45 Pages) Texas Instruments – I2C Controlled 3A Single Cell USB Charger | |||
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www.ti.com
REGN
bq24295
TS
RT1
RT2
RTH
103AT
bq24295
SLUSBC1 â SEPTEMBER 2013
Figure 28. TS Resistor Network
When the TS fault occurs, the fault register REG09[2:0] indicates the actual condition on each TS pin and an INT
is asserted to the host. The STAT pin indicates the fault when charging is suspended.
VREF
TEMPERATURE RANGE TO
INITIATE CHARGE
TEMPERATURE RANGE
DURING A CHARGE CYCLE
VREF
CHARGE SUSPENDED
VLTF
CHARGE SUSPENDED
VLTF
VLTFH
VLTFH
CHARGE at full C
CHARGE at full C
VHTF
AGND
CHARGE SUSPENDED
CHARGE SUSPENDED
VTCO
AGND
Figure 29. TS Pin Thermistor Sense Thresholds in Charge Mode
VREF
V BCOLDx
( -10ºC / 20ºC)
Temperature Range to
Boost
Boost Disable
Boost Enable
V BHOTx
(55ºC / 60ºC / 65ºC)
Boost Disable
AGND
Figure 30. TS Pin thermistor Sense Thresholds in Boost Mode
Assuming a 103AT NTC thermistor is used on the battery pack , the value RT1 and RT2 can be determined by
using the following equation:
Copyright © 2013, Texas Instruments Incorporated
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