LP3923 datasheet(16/37 Pages) TI1

16 / 37 page

LP3923

SNVS567B – APRIL 2010 – REVISED MAY 2013

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Table 5. Register 0x00 – OP_EN1

BUCK_PWM

0 - Auto mode PFM/PWM

1 - Buck forced PWM mode

EN_BUCK

0 - disable Buck

1 - enable Buck

EN_LDO8

0 - disable LDO8

1 - enable LDO8

EN_LDO7

0 - disable LDO7

1 - enable LDO7

EN_LDO2

0 - disable LDO2 on LP3923TL/X and -VI; enable on LP3923TL/X-VB

1 - enable LDO2 on LP3923TL/X and -VI; disable on LP3923TL/X-VB

EN_LDO1

0 - disable LDO1 on LP3923TL/X and -VI; enable on LP3923TL/X-VB

1 - enable LDO1 on LP3923TL/X and -VI; disable on LP3923TL/X-VB

Table 6. Register 0x0C (Read Only) – Status 1

PWR_ON_TRIG

0 - system was not powered on by PWR_ON input

1 - system was powered on by PWR_ON input

HF_PWR_TRIG

0 - system was not powered on by HF_PWR input

1 - system was powered on by HF_PWR input

CHG_IN_TRIG

0 - system was not powered on by connecting AC adapter

1 - system was powered on by connecting AC adapter

TSD_H

0 - Thermal Shutdown threshold not exceeded

1 - Thermal Shutdown threshold exceeded (cause Power Down sequence)

TSD_L

0 - chip temperature has not been over TSD early warning threshold

1 - chip temperature has been over TSD early warning threshold

0 - Buck output voltage out of range

1 - Buck output voltage within range

Table 7. Register 0x13 (Read Only) – CHARGER Status 1

BATT_OVER_OUT

0 - battery voltage is in normal range

1- battery voltage is over critical limit

CHGIN_OK_OUT

0 - voltage is not connected to AC adapter input

1 - voltage is connected to AC adapter input

EOC

0 - charging current is above EOC current level

1 - charging current is below EOC current level

TOUT_FULLRATE

0 - no time out occurred in Constant Current mode

1 - time out occurred in Constant Current mode

TOUT_PRECHG

0 - no time out occurred in pre-charge mode

1 - time out occurred in pre-charge mode

FULLRATE

0 - charger is not in CC or CV mode

1 - charger is in CC or CV mode

PRECHG

0 - charger is not in pre-charge mode

1 - charger is in pre-charge mode

Table 8. Register 0x14 (Read Only) – CHARGER Status 2

TOUT_CONSTV

0 - no time out occurred in Constant Voltage mode

1 - time out occurred in Constant Voltage mode

BAD_BATT

0 - charger has not detected a bad battery

1 - charger has detected a bad battery

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