MAX170DEWE+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Battery Fuel Gauge
• Characteristics: Accurate battery capacity measurement, low power consumption, small package size
• Package: 16-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Monitoring and reporting the remaining capacity of a rechargeable battery
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Operating Voltage Range: 1.7V to 5.5V
• Battery Types Supported: Li-Ion, Li-Polymer, LiFePO4
• Communication Interface: I2C
• Accuracy: ±1%
• Temperature Range: -40°C to +85°C
• Standby Current: 7µA (typical)
• Shutdown Current: 0.1µA (typical)

Pin Configuration

The MAX170DEWE+T has a total of 16 pins. The pin configuration is as follows:

1. VDD: Power Supply Input
2. GND: Ground
3. SDA: I2C Serial Data Input/Output
4. SCL: I2C Serial Clock Input
5. ALERT: Open-Drain Alert Output
6. TS: Thermistor Input for Temperature Monitoring
7. BAT: Battery Voltage Sense Input
8. VSS: Negative Terminal of Battery
9. VDD: Positive Terminal of Battery
10. VSS: Negative Terminal of Battery
11. VDD: Positive Terminal of Battery
12. VSS: Negative Terminal of Battery
13. VDD: Positive Terminal of Battery
14. VSS: Negative Terminal of Battery
15. VDD: Positive Terminal of Battery
16. VSS: Negative Terminal of Battery

Functional Features

• Accurate fuel gauge for single-cell lithium-ion batteries
• Automatically adjusts for battery aging, self-discharge, and temperature variations
• Provides remaining capacity estimation in mAh or percentage
• Supports low-power modes to minimize power consumption
• Integrated voltage and current measurement for accurate monitoring

Advantages and Disadvantages

Advantages

• Accurate battery capacity measurement
• Low power consumption
• Small package size for space-constrained applications
• Automatic adjustment for battery aging and temperature variations
• Easy integration with I2C communication interface

Disadvantages

• Limited to single-cell lithium-ion batteries
• Requires external thermistor for temperature monitoring

Working Principles

The MAX170DEWE+T works by continuously monitoring the battery voltage and current to estimate the remaining capacity. It uses an advanced algorithm that takes into account factors such as battery aging, self-discharge, and temperature variations to provide accurate capacity measurements. The IC communicates with the host system through the I2C interface, allowing for easy integration and data retrieval.

Application Field Plans

The MAX170DEWE+T is widely used in various portable electronic devices that rely on rechargeable batteries. Some of the application fields include:

1. Smartphones and tablets
2. Wearable devices
3. Portable medical equipment
4. GPS navigation systems
5. Portable gaming consoles

Alternative Models

For those seeking alternative options, here are some detailed and complete alternative models to consider:

1. MAX17043G+U: 14-pin TDFN package, supports multiple battery chemistries
2. BQ27441DRZT-G1: 12-pin SON package, integrated protection features
3. LTC2943IDD#PBF: 10-pin DFN package, measures charge, voltage, and current

These alternative models offer similar functionality and can be suitable replacements depending on specific requirements.

In conclusion, the MAX170DEWE+T is a highly reliable battery fuel gauge IC that accurately measures the remaining capacity of single-cell lithium-ion batteries. With its low power consumption and small package size, it is widely used in various portable electronic devices. However, it is important to consider alternative models based on specific needs and preferences.