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Table 8. StatusC Register (0x04)
ADDRESS: 0x04
MODE: Read-Only
BIT 7 6 5 4 3 2 1 0
NAME — SysBLim VLim ThrmBuck1 ThrmBuck2 ThrmLDO1 ThrmLDO2 ThrmLDO3
SysBLim
Status of Minimum SYS-BAT Voltage Limit. While the system is powered from VBUS, the charger draws power
from SYS to charge the battery. If the total load exceeds the input current limit, an adaptive charger control loop
reduces charge current to prevent VSYS from collapsing. The regulation of the charge current starts when either
one of the following two conditions is true: 1. V
SYS - VBAT
= 100mV (typ) OR 2. V
SYS = VSYS_LIM (falling)
0 = Charge Current is normal.
1 = Charge Current is being actively reduced to prevent SYS collapse.
VLim
Status of CHGIN-SYS Voltage Limit. This bit indicates if the input current limit is being actively reduced to
maintain a 40mV drop between CHGIN-SYS. This adaptive input current limit prevents adapter collapse in the
case that a power adapter with insufficient load capability, or a high resistance charging cable is used.
0 = CHGIN input current limit is functioning normally.
1 = CHGIN input current limit is being actively reduced to maintain 40mV drop between CHGIN-SYS.
ThrmBuck1
0 = Buck1 NOT in Thermal Off mode
1 = Buck1 in Thermal Off Mode
ThrmBuck2
0 = Buck2 NOT in Thermal Off mode
1 = Buck2 in Thermal Off Mode
ThrmLDO1
0 = LDO1 NOT in Thermal Off mode
1 = LDO1 in Thermal Off Mode
ThrmLDO2
0 = LDO2 NOT in Thermal Off mode
1 = LDO2 in Thermal Off Mode
ThrmLDO3
0 = LDO3 NOT in Thermal Off mode
1 = LDO3 in Thermal Off Mode
MAX20335 PMIC with Ultra-Low I
Q
Voltage Regulators and
Battery Chargers for Small Lithium Ion Systems
www.maximintegrated.com
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