ACT2861 datasheet(74/97 Pages) QORVO

74 / 97 page

Data Sheet Rev. F, April 2022 | Subject to change without notice

74 of 97

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ACT2861

30V Buck-Boost Charger with Integrated MOSFETs and OTG

REG 0x06: Faults 2 (Read only) (VM)

Bit

Name

Description

Comment

WATCHDOG_FA

ULT

0: No Fault

1: Watchdog Fault

Watchdog Timeout Fault

This bit is latching. If Watchdog is enabled and watchdog

timer times out, then this bit is set high.

This bit is not cleared when read. The watchdog timer is

cleared with a watchdog read or by disabling the watchdog

timer.

OTG_VOUT_FAU

0: No Fault

1: OTG VOUT Fault

OTG Hiccup Mode Fault

This bit is latching. Read this bit to clear the value back to

0. If the VOUT enters hiccup state because current

exceeds the Constant Current Mode, then this bit gets set.

This register will always be set during hiccup mode when

VOUT is off during the 3sec restart time and converter is in

the HICCUP state. After it exits this state, a read clears

this bit.

OTG_VBAT_CUT

OFF_FLT

0: No Fault

1: OTG VBAT CUTOFF Fault

OTG VBAT Cutoff Fault

This bit is latching. If VBAT falls below the VOTG_VBAT_CUTOFF

Voltage specified in the OTG_VBAT_CUTOFF Register

(Reg 0x0F, Bits 7:5), this bit is set to 1.

When

the

battery

voltage

above

the

OTG_VBAT_CUTOFF voltage, a read will clear this fault bit.

OTG_VOUT_OV

0: No Fault

1: VOUT OV Fault

OTG Vout Overvoltage Fault

Read to Clear latching bit

This bit will be set any time the Vout exceeds the OV

threshold for external or internal feedback. The VOUT

must be below the OV voltage and then a read will clear

this fault bit.

OTG_LIGHT_LO

0: No Fault

1: OTG Off

Output Light Load State Latch

This bit is latching. This bit is set when the converter has

been disabled because of light load condition on output

and it entered the LL_DIS state. After the IC exits the

LL_DIS state, a read clears this bit.

OTG_VBAT_OV

0: No Fault

1: OTG VBAT OV

OTG VBAT Overvoltage fault

This bit is latching. This bit is set any time VBAT exceeds

the OV threshold in OTG mode. VBAT must be below the

OV voltage and then a read clears this bit.

I2C_FAULT

0: No Fault

1: I2C Fault

If set to 1, I2C command did not finish correctly or errors

on I2C data

DEADBATTERY

0: Battery above 3V

1: Battery below 3V

If charging and battery is below 3V, this bit gets set to 1.

This is a real-time indicator.

ACT2861 Datasheet(PDF) 74 Page - Qorvo, Inc

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