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TPS65010RGZT Datasheet(PDF) 27 Page - Texas Instruments

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Part # TPS65010RGZT
Description  Power and Battery Management IC for Li-Ion Powered Systems
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS65010RGZT Datasheet(HTML) 27 Page - Texas Instruments

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TPS65010
www.ti.com
SLVS149C – JUNE 2003 – REVISED SEPTEMBER 2015
7.3.6 System Reset and Control Signals
The RESPWRON signal is used as a global reset for the application. It is an open-drain output. The
RESPWRON signal is generated according to the Power Good comparator linked to VLDO1 and remains low for
tn(RESPWRON) sec after VLDO1 has stabilized. When RESPWRON is low, PWRFAIL, MPU_RESET and INT are
also held low.
If the output voltage of LDO1 is less than 90% of its nominal value, as RESPWRON is generated, and if the
output voltage of LDO1 is programmed to a higher value, which causes the output voltage to fall out of the 90%
window, then a RESPWRON signal is generated.
The PWRFAIL signal indicates when VCC < UVLO or when the TPS65010 junction temperature has exceeded a
reliable value or if BATT_COVER is taken low. This open-drain output can be connected at a fast interrupt pin for
immediate attention by the application processor. All supplies are disabled t(uvlo), t(overtemp) or t(batt_cover) sec after
PWRFAIL has gone low, giving time for the application processor to shutdown cleanly.
BATT_COVER is used to detect whether the battery cover is in place or not. If the battery cover is removed, the
TPS65010 generates a warning to the processor that the battery is likely to be removed and that it may be
prudent to shut down the system. If not required, this feature may be disabled by connecting the BATT_COVER
pin to the VCC pin. BATT_COVER is de-bounced internally. Typical de-bounce time is 56 ms. BATT_COVER
has an internal 2-M
Ω pull down.
The HOT_RESET input is used to generate an MPU_RESET signal for the application processor.
TheHOT_RESET pin could be connected to a user-activated button in the application. It can also be used to exit
low-powermode, in this case the TPS65010 waits until the VCORE voltage has stabilized before generating the
MPU_RESET pulse. The MPU_RESET pulse is active low for t(mpu_nreset) sec. HOT_RESET has an internal 1-MΩ
pull up to VCC.
The PB_ONOFF input can be used to exit LOW-POWER MODE. It is typically driven by a user-activated push-
button in the application. Both HOT_RESET and PB_ONOFF are de-bounced internally by the TPS65010.
Typical de-bounce time is 56 ms. PB_ONOFF has an internal 1-M
Ω pull down.
PB_ONOFF, BATT_COVER and UVLO events also cause a normal, maskable interrupt to be generated and are
noted in the REGSTATUS register.
7.3.7 Vibrator Driver
The VIB open-drain output is provided to drive a vibrator motor, controlled through the serial interface register
VDCDC2. It has a maximum dropout of 0.5 V at 100-mA load. Typically an external resistor is required to limit
the motor current, and a freewheel diode to limit the VIB overshoot voltage at turnoff.
Copyright © 2003–2015, Texas Instruments Incorporated
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