STBCFG01 datasheet(29/37 Pages) STMICROELECTRONICS

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STBCFG01

I²C compatible interface registers

DocID026474 Rev 3

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FSW: switching frequency. The switching frequency can be changed only when the device

doesn’t switch. SHDN input should be pulled high before modifying this setting.



0: 2 MHz



1: 3 MHz (default)

DICHG_adj: dynamic charging current adjustment enable (for soft-current transitions)



0: disabled



1: enabled (default)

BST_status: OTG boost status



000: idle



001: wait soft-start



010: linear soft-start



011: switching soft-start



100: frequency ramp-up



101: OTG_run



110: PMOS-off



111: shutdown

BST_SH: OTG boost output short at beginning



0: no short detected (default)



1: short detected

Table 23: CHG_Status1 register format (register address: 95h)

POR

R/W

CHG_status

PreB_st

PreB

Alarm

00h

Alarm: alarm state



0: no alarm is active



1: alarm condition detected

PreB: pre-bias current activation



0: pre-bias current has not been activated



1: pre-bias current has been activated (VINOVP < VDCIN < VINOVP_PB for more than tPBD)

PreB_st: pre-bias current sink status



0: pre-bias current sink is currently off



1: pre-bias current sink is currently on

CHG_status: charger status



00000: idle



00001: trickle charge



00010: pre-charge



00011: fast charge



00100: taper charge (constant voltage)



00101: charge done (termination)



00110: boost on



00111: shutdown



01000: battery detection running

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