Cfg_Tc3, Cfg_Tc2, Cfg_Tc1; Configure User Code; Cfg_User_Code - Analog Devices LINEAR LT8491 Manual

2
I C REGISTER DESCRIPTIONS
The curve in Figure 10 can be modified via the CFG_TCx registers if needed. Note that hardware limitations restrict
V (T ) and V (T ) to the range of approximately 82% to 123.5% of V
S2 BAT S3 BAT
For proper charger operation, V

CFG_TC3, CFG_TC2, CFG_TC1

2
I C REG ADDRESS REGISTER NAME
0x4E CFG_TC3
0x52 CFG_TC2
0x56 CFG_TC1
These registers set the battery voltage temperature compensation for Stage 2 and Stage 3. These values are only used
when charging in Stage 2 or 3 and when CFG_CHRG_MISC→TC_ENABLE=1. Equations describing the use of these
values are described in the prior section.

CONFIGURE USER CODE

Table 20. User Code Register
REGISTER NAME SIZE

CFG_USER_CODE

WORD
CFG_USER_CODE
2
I C REGISTER
ADDRESS BIT NAME
0x5A USER_INPUT_DATA
These two bytes can be used to store any desired data from the user such as revision, lot, assembly, or other informa-
tion. This data is not used for any function by the LT8491.
must always be set lower than V
S3
BIT(S) FORMAT
[31:0] Single Precision Float
[31:0]
[31:0]
2 2
I C REGISTER I C BOOT READ
ADDRESS ADDRESS
0x5A 0xBA
BIT(S) DESCRIPTION
[15:0] 2 bytes for user information.
For more information
(25°C).
S2
.
S2
EXAMPLES DESCRIPTION
–1.49e-7 = 0xB41FFCCF The TC3 temperature coefficient.
1.34e-5 = 0x3760D090 The TC2 temperature coefficient.
–1.54e-3 = 0xBAC9D9D3 The TC1 temperature coefficient.
DESCRIPTION
2 bytes of user information.
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LT8491
REF
PAGE
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