I
2
C Interface
The device uses the two-wire I
2
C interface to communicate
with the host microcontroller. The configuration settings
and status information provided through this interface are
detailed in the register descriptions.
I
2
C Addresses
The registers of the MAX20335 are accessed through
the slave address of 0101000 (0x50 for writes/0x51 for
reads).
Table 2. Thermistor Monitoring/JEITA Monitoring Enable Control
ThermEn[1:0] DESCRIPTION
CHARGER MODE
T < T1
T1 < T < T2
T2 < T < T3
T3 < T < T4
T >T4
00
Thermistor/
JEITA
Monitoring OFF
As per I
2
C settings
01
Thermistor
Monitoring ON
OFF
I
PCHG
= IPChg,
I
FChg
=
T1T2IFchg,
Regulated Voltage =
V
BATREG
I
PCHG
= IPChg,
I
FChg
= T2T3IFchg,
Regulated Voltage =
V
BATREG
OFF
OFF
10
JEITA
Monitoring 1 ON
OFF
I
PCHG
= IPChg,
I
FChg
=
T1T2IFchg,
Regulated Voltage =
V
BATREG
I
PCHG
= IPChg,
I
FChg
= T2T3IFchg
Regulated Voltage =
V
BATREG
I
PCHG
= IPChg,
I
FChg
= T3T4IFchg
Regulated Voltage =
V
BATREG
OFF
11
JEITA
Monitoring 2 ON
OFF
I
PCHG
= IPChg,
I
FChg
=
T1T2IFchg,
Regulated Voltage =
V
BATREG
- 150mV
I
PCHG
= IPChg,
I
FChg
= T2T3IFchg,
Regulated Voltage =
V
BATREG
I
PCHG
= IPChg,
I
FChg
= T3T4IFchg,
Regulated Voltage =
V
BATREG
- 150mV
OFF
MAX20335
PMIC with Ultra-Low I
Q
Voltage Regulators and
Battery Chargers for Small Lithium Ion Systems
www.maximintegrated.com
Maxim Integrated
│
35
