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LIMCHIP CO., LIMITED
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RFQ ListingInterface ICs
Brand: Analog Devices
MAX77840EWG+T
3A Buck Charger with ModelGauge m5 Fuel Gauge and USB BC1.2 Detection
A single-die battery manager combining a 3.15 A switch-mode charger, ModelGauge m5 SOC tracking accurate to ±1% without calibration, BC1.2 adapter detection and an OTG boost path — the power brain for portable and point-of-sale devices.
ManufacturerAnalog Devices
PackageWLP-81 (9×9 bump array, 3.96×3.87 mm)
SeriesMAX77840
Power IC Specifications
| Parameter | Value / Specification |
|---|---|
| Function / Topology | Fully integrated single-chip 1-cell Li+ battery management: 3.15 A switch-mode buck charger with USB-OTG reverse boost, ModelGauge m5 fuel gauge and USB BC1.2 adapter detection |
| Package / Case | WLP-81 (9×9 bump array, 3.96×3.87 mm) |
| Input Voltage | Up to 13.4 V operating range with 16 V withstanding protection |
| Output Current | Up to 3.15 A battery charge current limit; USB-OTG reverse boost up to 1.5 A programmable |
| Input Current Limit | Up to 4.0 A with adaptive input current limiting (AICL) |
| Fuel Gauge | ModelGauge m5 with ±1% SOC accuracy, no calibration cycles |
| True-Disconnect FET | 12.8 mΩ RDS(on), rated up to 9 ARMS discharge current |
| Interface | I2C 3.0-compatible with interrupt output and one Safeout LDO |
| Adapter Detection | USB BC1.2 D+/D- detection for USB, DCP and proprietary HVDCP adapters |
| Operating Temperature | -40°C to +85°C |
Power Features & Applications
- Single-input switch-mode charger with up to 13.4 V input operating range and 16 V withstand protection
- Up to 3.15 A battery charging current limit with CC, CV and die-temperature control loops
- Adaptive input current limiting supports up to 4.0 A from weak or unknown adapters
- ModelGauge m5 fuel gauge delivers ±1% SOC accuracy without pack calibration cycles
- Integrated true-disconnect FET with 12.8 mΩ RDS(on) rated up to 9 ARMS discharge current
- USB BC1.2-compliant D+/D- detection identifies USB, DCP and proprietary HVDCP adapters
- USB-OTG reverse boost supplies up to 1.5 A programmable accessory power
- I2C 3.0-compatible interface with interrupt output, shipping mode and true hardware reset
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Frequently Asked Questions
Is MAX77840EWG+T available from LimChip?
LimChip can confirm current availability, price, quantity, date code and lead time for MAX77840EWG+T by RFQ.
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