Overview
The LC709204FXE-01TBG, produced by onsemi, is a sophisticated battery fuel gauge designed for 1-cell lithium-ion/polymer batteries. It is part of the Smart LiB Gauge family and utilizes the advanced HG-CVR2 algorithm to provide accurate Relative State Of Charge (RSOC) information even under varying conditions such as temperature changes, loading, aging, and self-discharge. This device is notable for its low power consumption, operating at just 2 μA, and its ability to immediately gauge the battery state after insertion without the need for a learning cycle. It also features an alarm function for battery safety and supports I2C communication up to 400 kHz.
Key Specifications
| Parameter | Symbol | Conditions | Specification | Unit |
|---|---|---|---|---|
| Maximum Supply Voltage | VDD | - | -0.3 to +6.5 | V |
| Operating Supply Voltage | VDD | - | 2.5 to 5.0 | V |
| Operating Ambient Temperature | Taopr | - | -40 to +85 | °C |
| Storage Ambient Temperature | Tstg | - | -40 to +125 | °C |
| Operational Mode Current | IDD | Ta = -20°C to +70°C | 2 μA | - |
| Sleep Mode Current | IDD | Ta = -20°C to +70°C | 1.3 μA | - |
| LDO Output Voltage | VREG | 2.5 to 5.0 V | 2.3 to 3.0 | V |
| Clock Frequency | TSCL | 2.5 to 5.0 V | - to 400 kHz | - |
Key Features
- Accurate Gauging: Immediate and accurate battery state of charge (RSOC) measurement using the HG-CVR2 algorithm.
- Low Power Consumption: Operational current of 2 μA and sleep mode current of 1.3 μA.
- Battery Safety: Alarm functions for voltage, temperature, and other critical battery conditions.
- Temperature Measurement: Supports three temperature inputs, including two NTC thermistors via I2C.
- I2C Interface: Communication supported up to 400 kHz.
- Battery Lifetime Measurement: Tracks State of Health (SOH), cycle count, and operating time.
- Remaining Time Estimation: Estimates time to full and time to empty.
- Detection of Battery Operating Conditions: Monitors charging and discharging states and detects battery insertion.
Applications
- Wearables and IoT Devices: Ideal for smartwatches, fitness trackers, and other wearable devices.
- Smartphones and PDA Devices: Suitable for mobile phones and personal digital assistants.
- Digital Cameras: Used in various camera devices for battery management.
- Portable Game Players: Applied in handheld gaming consoles.
- USB-related Devices: Used in devices that rely on USB power and battery management.
Q & A
- What is the LC709204FXE-01TBG used for?
The LC709204FXE-01TBG is a battery fuel gauge designed for 1-cell lithium-ion/polymer batteries, providing accurate state of charge information and various safety features. - What is the HG-CVR2 algorithm?
The HG-CVR2 algorithm is an advanced method used by the LC709204FXE-01TBG to measure the Relative State Of Charge (RSOC) of the battery, ensuring accuracy even under varying conditions. - What is the power consumption of the LC709204FXE-01TBG?
The device operates at 2 μA in operational mode and 1.3 μA in sleep mode. - How does the LC709204FXE-01TBG measure temperature?
The device supports three temperature inputs, including two NTC thermistors connected via I2C. - What communication interface does the LC709204FXE-01TBG use?
The device uses an I2C interface, supporting communication up to 400 kHz. - What safety features does the LC709204FXE-01TBG offer?
The device includes alarm functions for low cell voltage, high cell voltage, low temperature, and high temperature, as well as other critical battery conditions. - How does the LC709204FXE-01TBG track battery lifetime?
The device tracks State of Health (SOH), cycle count, and operating time to estimate the battery's lifetime. - Can the LC709204FXE-01TBG estimate remaining battery time?
Yes, it can estimate the time to full and time to empty based on the current state of the battery. - Is the LC709204FXE-01TBG compliant with environmental standards?
Yes, the device is Pb-free, halogen-free/BFR-free, and RoHS compliant. - What are the typical applications of the LC709204FXE-01TBG?
The device is commonly used in wearables, smartphones, digital cameras, portable game players, and USB-related devices.
