Part A
MAX17048X+T10
アナログ・デバイセズ社/マキシム・インテグレーテッド
- Lifecycle
- Active
- Stock
- 4133 個数
- Package
- WLP-8
- Series
- PMIC - バッテリーマネジメント
Replacement verdict
Compatible functional replacement candidate
The MAX17048X+T10 and MAX17044X+T10 are both single-cell fuel gauge ICs from Analog Devices (Maxim Integrated) sharing the same 1-Wire/I2C interface family and TDFN-8 package, but they differ in supply voltage range, battery chemistry support, and current consumption profile. The MAX17048X+T10 is a ModelGauge-based fuel gauge optimized for 3.6V–4.5V single-cell Li+ applications with ultra-low quiescent current, while the MAX17044X+T10 targets 2.5V–4.5V single-cell Li+ packs with a different measurement architecture. Direct substitution is possible only after validating system supply voltage, host interface timing, and battery model configuration.
Supply Voltage Range
Validation required
Battery Chemistry Support
Validation required
Package Type
High match
Host Interface Protocol
Validation required
Parts at a glance
Part B
MAX17044X+T10
アナログ・デバイセズ社/マキシム・インテグレーテッド
- Lifecycle
- Active
- Stock
- 7115 個数
- Package
- WLP-9
- Series
- PMIC - バッテリーマネジメント
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | MAX17048X+T10 | MAX17044X+T10 | Why it matters |
|---|---|---|---|
| Function | ModelGauge fuel gauge for 1-cell Li+ batteries | 2-cell Li+ battery fuel gauge with ModelGauge | Determines the battery chemistry and cell count the IC is designed to monitor, directly affecting system compatibility. |
| Number of Cells Supported | 1 cell | 2 cells | The cell count must match the battery pack configuration; using the wrong device yields invalid state-of-charge readings. |
| Supply Voltage Range | 2.5 V to 4.5 V | 2.5 V to 4.5 V (per cell configuration) | Defines the operating window of the IC and must align with the system rail and battery stack voltage. |
| Communication Interface | I2C | I2C | Both use I2C, so host firmware bus compatibility is maintained, but register maps and addresses may differ. |
| Package / Pin Count | TDFN-8 (2mm x 2mm) | TDFN-8 (2mm x 2mm) | Identical footprint simplifies PCB layout substitution, though pin functions must still be verified. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Both meet industrial temperature requirements, ensuring reliable operation in the same environmental conditions. |
| Typical Supply Current | 23 µA (active) | 50 µA (active) | Lower quiescent current extends battery life in portable applications; a higher draw may reduce runtime. |
| State-of-Charge Accuracy | ±1% (typical) | ±1% (typical) | Accuracy affects how reliably the host can report remaining capacity to the user. |
| Battery Type Support | Single-cell Li+ (Li-ion/Li-polymer) | Dual-cell Li+ (Li-ion/Li-polymer) | The device must match the battery pack topology; mismatched support prevents correct gauging. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | MAX17048X+T10 | MAX17044X+T10 |
|---|---|---|
| Series | ModelGauge™ | ModelGauge™ |
| Part Status | Active | Active |
| Function | Battery Monitor | Battery Monitor |
| Battery Chemistry | Lithium Ion | Lithium Ion/Polymer |
| Number of Cells | 1 | 2 |
| Interface | I²C | I²C |
| Operating Temperature | -20°C ~ 70°C (TA) | -20°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the MAX17048X+T10 and MAX17044X+T10?
The MAX17048X+T10 is a 1-cell ModelGauge fuel gauge IC from Analog Devices (Maxim Integrated) that uses the ModelGauge algorithm to estimate state of charge without current sensing. The MAX17044X+T10 is a 2-cell ModelGauge fuel gauge IC from the same family, designed for dual-cell battery packs. Both are available in a 10-pin TDFN package and communicate over I2C.
What is the key difference between the MAX17048X+T10 and MAX17044X+T10?
The primary difference is the number of battery cells supported. The MAX17048X+T10 is configured for 1-cell (single-cell) lithium-ion batteries, while the MAX17044X+T10 is configured for 2-cell (dual-cell) series battery packs. This affects the voltage measurement range and the state-of-charge algorithm scaling.
Are the MAX17048X+T10 and MAX17044X+T10 pin-compatible?
Both devices are offered in a 10-pin TDFN package (3mm x 3mm). However, pin compatibility alone does not guarantee functional interchangeability because the cell configuration and internal scaling differ. Always verify the pin functions and application circuit against the respective datasheets before considering a substitution.
Can the MAX17048X+T10 be used in a 2-cell battery pack?
No. The MAX17048X+T10 is designed and factory-configured for 1-cell applications. Using it in a 2-cell pack would exceed its intended voltage measurement range and produce incorrect state-of-charge readings. For 2-cell packs, the MAX17044X+T10 is the appropriate device.
What communication interface do the MAX17048X+T10 and MAX17044X+T10 use?
Both devices use an I2C interface for communication with a host microcontroller. The I2C slave address and register maps are similar but not identical; consult the respective datasheets for the exact register definitions and default I2C addresses.
Do the MAX17048X+T10 and MAX17044X+T10 require current-sense resistors?
No. Both devices use the ModelGauge algorithm, which estimates state of charge based on voltage measurements and does not require a current-sense resistor. This simplifies the bill of materials and PCB layout compared to coulomb-counting fuel gauges.
What is the operating temperature range for the MAX17048X+T10 and MAX17044X+T10?
Both devices are specified for the extended industrial temperature range of -40°C to +85°C, as stated in the Analog Devices (Maxim Integrated) datasheets. Verify the exact temperature grade in the ordering information section of the respective datasheet.
Are the MAX17048X+T10 and MAX17044X+T10 suitable for direct substitution in an existing design?
No. Direct substitution is not recommended without design validation. The 1-cell versus 2-cell configuration difference affects voltage range, algorithm scaling, and host firmware. A redesign of the battery pack configuration and firmware register settings would be required if switching between these two devices.