MAXIM INTEGRATED MAX17320 ModelGauge m5 EZ Fuel Gauge | New Product Brief
This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.
MAXIM INTEGRATED MAX17320 ModelGauge m5 EZ Fuel Gauge
Maxim Integrated’s MAX17320 ModelGauge m5 EZ Fuel Gauge is a pack-side fuel gauge IC with built-in battery health, safety, protection, and authentication functions for 2 to 4 series lithium-ion or lithium polymer batteries.
The IC monitors the voltage, current, temperature, and state of the battery and provides cell balancing with internal FETs, and has a very low quiescent current. It includes internal self-discharge detection and protection functions to prolong the life of the battery and prevent safety issues. It uses Maxim’s ModelGauge m5 algorithm for industry-leading fuel gauge accuracy, with automatic compensation for cell aging, temperature, and discharge rate.
To prevent cloning, the MAX17320 has integrated SHA-256 authentication with a 160-bit secret key and unique 64-bit ID. It also has a configurable always-on LDO to power small critical system-side loads without overloading the cells.
- Monitors voltage, current, temperature, and state of the battery
- Cell balancing with internal FETs
- IQ: 38µA Active, FETs enabled
- Battery internal self-discharge detection
- Programmable safety/protection
- Prolongs the life of the battery
- Prevents safety problems
- ModelGauge m5 EZ Algorithm: industry-leading fuel gauge accuracy
- Short-term accuracy/linearity of coulomb counter
- Long-term stability of voltage-based fuel gauge
- SHA-256 authentication to prevent cloning
- 160-bit secrete key
- 64-bit unique ID
- Configurable Always-On LDO
- Power small critical, system-side loads without overloading the cells even under fault conditions
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