MAX17262HEWL
Manufacturer
Maxim Integrated
Overview
Part 1: Markdown Summary
Part: MAX17262 from Maxim Integrated
Type: Ultra-low power fuel-gauge IC
Key Specs:
- Operating Current: 5.2μA
- Battery Capacity Range: 30mAhr to 6Ahr
- Internal Current Sensing Options: 7mΩ and 30mΩ (typ)
- Internal Temperature Sensor Accuracy: ±1°C
- Operating Temperature Range: -40°C to +85°C
- Package Dimensions: 1.5mm x 1.5mm
Features:
- ModelGauge m5 EZ algorithm (no characterization, robust against battery variation, eliminates error near empty voltage, eliminates coulomb-counter drift, compensates for age/current/temperature, does not require empty/full/idle states)
- Integrated Internal Current Sensing
- Supports Li+ and variants including LiFePO4
- Thermistor or internal temperature sensing
- Dynamic Power Estimates Power Capability During Discharge
- Time-to-Empty and Time-to-Full Estimation (constant power or constant current)
- Predicts Remaining Capacity Under Theoretical Load
- No Calibration Required
- Alert Indicator for Voltage, SOC, Temperature, Current, and 1% SOC Change
- 2-wire I2C interface
- 9-pin wafer-level package (WLP) with 0.4mm pitch
Applications:
- Wearables and Smartwatches
- Bluetooth Headset Cases
- Health and Fitness Monitors
- Medical Devices
- Handheld Computers and Terminals
- Home and Building Automation, Sensors
- Toys
Package:
- 9-pin wafer-level package (WLP): 1.5mm x 1.5mm, 0.4mm pitch
Features
- ModelGauge m5 EZ
- No Characterization Required for EZ Performance
- Robust Against Battery Variation
- Eliminates Error Near Empty Voltage
- Eliminates Coulomb-Counter Drift
- Compensates for Age, Current, Temperature
- Does Not Require Empty, Full, or Idle States
- Low 5.2μA Operating Current
- Integrated Internal Current Sensing Options
- 7mΩ and 30mΩ (typ)
- Supports Li+ and Variants Including LiFePO4
- Thermistor or ±1°C Internal Temperature
- Dynamic Power Estimates Power Capability During Discharge
- Time-to-Empty and Time-to-Full Estimation
- Constant Power or Constant Current
- Predicts Remaining Capacity Under Theoretical Load
- No Calibration Required
- Alert Indicator for Voltage, SOC, Temperature, Current, and 1% SOC Change
Applications
- Wearables and Smartwatches
- Bluetooth Headset Cases
- Health and Fitness Monitors
- Medical Devices
- Handheld Computers and Terminals
- Home and Building Automation, Sensors
- Toys
Pin Configuration
Electrical Characteristics
(VBATT = 2.3V to 4.9V, TA = -40°C to +85°C, typical value for TA is +25°C. Limits are 100% tested at TA = +25°C. The operating temperature range and relevant supply voltage range are guaranteed by design and characterization. Specifications marked "GBD" are guaranteed by design and not production tested.)
| PARAMETER | SYMBOL | CONDITIONS | MIN | TYP | MAX | UNITS |
|---|---|---|---|---|---|---|
| POWER SUPPLY | ||||||
| Supply Voltage | VBATT | (Note 2) | 2.3 | 4.9 | V | |
| Shutdown Supply Current | IDD0 | TA ≤ +50°C | 0.5 | 0.9 | μA | |
| Hibernate Supply Current | IDD1 | TA ≤ +50°C, average current | 5.2 | 12 | μA | |
| Active Supply Current | IDD2 | TA ≤ +50°C, average current not including thermistor measurement current | 16 | 30 | μA | |
| Regulation Voltage | VREG | 1.8 | V | |||
| Startup Voltage | VBATTSU | 3 | V | |||
| ANALOG-TO-DIGITAL CONVERSION | ||||||
| BATT Measurement | TA = +25°C | -7.5 | +7.5 | |||
| Error | VGERR | -40°C ≤ TA ≤ +85°C | -20 | +20 | mV | |
| BATT Measurement Resolution | VLSB | 78.125 | μV | |||
| BATT Measurement Range | VFS | 2.3 | 4.9 | V | ||
| RSNS | MAX17262R, TA = +25°C | 7 | mΩ | |||
| Sense Resistance | MAX17262H, TA = +25°C | 30 | ||||
| Current Measurement Offset Error | IOERR | Zero current, long term average | ±1 | mA | ||
| MAX17262R | 0.15625 | |||||
| Current Measurement Resolution | ILSB | MAX17262H | 0.05208 3 | mA | ||
| Current Measurement | MAX17262R (Note 9) | ±2.5 | % of | |||
| Gain Error | IGERR | MAX17262H (Note 9 ) | ±2.5 | Reading | ||
| Current Measurement | MAX17262R, TA ≤ +50°C, 0.5A and 1A (Note 9) | -3 | +3 | % of | ||
| Error | IERR | MAX17262H, T A ≤ +50°C, 0.5A and 1A (Note 9) | -3 | +3 | Reading | |
| Internal Temperature Measurement Error | TIGERR | -40°C ≤ TA ≤ +85°C | ±1 | °C | ||
| Internal Temperature Measurement Resolution | TILSB | 0.00391 | °C | |||
| INPUT/OUTPUT | ||||||
| External Thermistance | REXT10 | Config.R100 = 0 | 10 | |||
| Resistance | REXT100 | Config.R100 = 1 | 100 | kΩ | ||
| Output Drive Low, ALRT, SDA | VOL | IOL = 4mA, VBATT = 2.3V | 0.4 | V | ||
| Input Logic High, ALRT, SCL, SDA | VIH | 1.5 | V |
Absolute Maximum Ratings
| BATT to GND | 0.3V to +6V |
|---|---|
| ALRT to GND | 0.3V to +17V |
| REG to GND | 0.3V to +2.2V |
| TH to GND | 0.3 V to V BATT + 0.3 V |
| CSN to GND | 0.3V to V BATT + 0.3V |
| CSPL to GND | |
| SDA, SCL to GND | 0.3V to +6V |
| SYS to GND | 0.3V to +6V |
| Operating Temperature Range | 40°C to +85°C |
| Junction Temperature | +150°C |
| Storage Temperature Range | 55°C to +125°C |
| Soldering Temperature (reflow) | +260°C |
| Continuous Source Current for TH | 1mA |
| Continuous Sink Current for SDA, ALRT | 20mA |
| Lead Temperature (soldering 10s) | +300°C |
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Package Information
WLP MAX17262R
| Package Code | W91G1+3 |
|---|---|
| Outline Number | 21-100221 |
| Land Pattern Number | Refer to Application Note 1891 |
| Thermal Resistance, Four-Layer Board: | |
| Junction to Ambient (θ JA ) | 83.98°C/W |
| Junction to Case (θJC) NA |
WLP MAX17262H
| Package Code | W91G1+5 |
|---|---|
| Outline Number | 21-100654 |
| Land Pattern Number | Refer to Application Note 1891 |
| Thermal Resistance, Four-Layer Board: | |
| Junction to Ambient (θ JA ) | 83.98°C/W |
| Junction to Case (θ JC ) | NA |
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| MAX17262 | Maxim Integrated | — |
| MAX17262H | Maxim Integrated | — |
| MAX17262R | Maxim Integrated | — |
| MAX17262REWL | Maxim Integrated | — |
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