MAX1704X Register Summary#
ADDRESS |
REGISTER NAME |
16-BIT LSb |
DESCRIPTION |
READ/WRITE |
DEFAULT |
|---|---|---|---|---|---|
0x02 |
VCELL |
78.125µV/cell |
ADC measurement of VCELL. |
R |
— |
0x04 |
SOC |
1%/256 |
Battery state of charge. |
R |
— |
0x06 |
MODE |
— |
Initiates quick-start, reports hibernate mode, and enables sleep mode. |
W |
0x0000 |
0x08 |
VERSION |
— |
IC production version. |
R |
0x001x |
0x0A |
HIBRT |
— |
Controls thresholds for entering and exiting hibernate mode. |
R/W |
0x8030 |
0x0C |
CONFIG |
— |
Compensation to optimize performance, sleep mode, alert indicators, and configuration. |
R/W |
0x971C |
0x14 |
VALRT |
— |
Configures the VCELL range outside of which alerts are generated. |
R/W |
0x00FF |
0x16 |
CRATE |
0.208%/hr |
Approximate charge or discharge rate of the battery. |
R |
— |
0x18 |
VRESET/ID |
— |
Configures VCELL threshold below which the IC resets itself, ID is a one-time factory-programmable identifier. |
R/W |
0x96xx |
0x1A |
STATUS |
— |
Indicates overvoltage, undervoltage, SOC change, SOC low, and reset alerts. |
R/W |
0x01xx |
0x40 to 0x7F |
TABLE |
— |
Configures battery parameters. |
W |
— |
0xFE |
CMD |
— |
Sends POR command. |
R/W |
0xFFFF |
Key Features#
Battery Compatibility: Supports a single lithium cell.
Advanced SOC Tracking: The ModelGauge™ algorithm continuously monitors the battery’s SOC under varying charge and discharge conditions.
Low Power Consumption: Enters a 3µA hibernate mode automatically during low-current states, resuming activity when the system becomes active.
Temperature Compensation: Managed through the system microcontroller for accurate performance across temperatures.
Debounced Initial SOC Estimate: On battery insertion, the IC stabilizes the initial voltage readings for a more accurate SOC estimate.
I2C Interface: Provides access to SOC, voltage, and rate information for easy integration with microcontrollers.
Compact Packaging: Available in a 0.9mm x 1.7mm 8-bump wafer-level package (WLP) or a 2mm x 2mm 8-pin TDFN package.