Overview
The LC709203FXE-01MH is a lithium-ion battery management IC produced by onsemi. It is part of the Smart LiB Gauge family of fuel gauges, designed to measure the Relative State Of Charge (RSOC) of single lithium-ion or polymer batteries. This IC utilizes the unique HG-CVR algorithm, which eliminates the need for an external sense resistor and provides accurate RSOC information even under unstable conditions such as changes in temperature, loading, aging, and self-discharge. The device is available in a compact 9-pin WLCSP package, making it ideal for applications requiring minimal PCB footprint.
Key Specifications
| Parameter | Symbol | Conditions | Specification | Unit |
|---|---|---|---|---|
| Package | - | - | 9-UFBGA (WLCSP-9) | - |
| Operating Temperature Range | Topr | - | -40°C to +85°C | °C |
| Maximum Supply Voltage | VDD max | - | -0.3 to +6.5 | V |
| Input Voltage | VI | - | -0.3 to VDD + 0.3 | V |
| High Level Input Current | IIH | VIN = VDD | -1 to 1 | μA |
| Low Power Consumption | - | Operational Mode | 3 μA | μA |
| Precision Voltage Measurement | - | - | ±7.5 mV | mV |
| Precision Timer | - | - | ±3.5% | % |
| I2C Clock Frequency | TSCL | - | Up to 400 kHz | kHz |
Key Features
- HG-CVR Algorithm Technology: No external sense resistor required, providing accurate RSOC with 2.8% accuracy, even for aging batteries. It adjusts for parasitic impedance around the battery and ensures simple and quick setup.
- Low Power Consumption: Operates at 3 μA in operational mode, reducing power consumption without compromising RSOC accuracy.
- Precision Measurements: Precision voltage measurement (±7.5 mV) and precision timer (±3.5%).
- Alerts and Detection: Alerts for low RSOC and/or low voltage, and detects battery insertion automatically.
- Temperature Compensation: Sense thermistor input via I2C interface.
- I2C Interface: Supports up to 400 kHz I2C communication.
- Environmental Compliance: Pb-free, halogen-free/BFR-free, and RoHS compliant.
Applications
- Wireless handsets
- Smartphones and PDA devices
- MP3 players
- Digital cameras
- Portable game players
- USB-related devices
Q & A
- What is the primary function of the LC709203FXE-01MH?
The primary function is to measure the Relative State Of Charge (RSOC) of single lithium-ion or polymer batteries using the HG-CVR algorithm.
- What package type does the LC709203FXE-01MH come in?
The device is available in a 9-pin WLCSP (Wafer Level Chip Scale Package) package.
- What is the operating temperature range of the LC709203FXE-01MH?
The operating temperature range is -40°C to +85°C.
- How accurate is the RSOC measurement provided by the LC709203FXE-01MH?
The RSOC measurement accuracy is 2.8%.
- Does the LC709203FXE-01MH require an external sense resistor?
No, it does not require an external sense resistor due to the HG-CVR algorithm.
- What is the power consumption of the LC709203FXE-01MH in operational mode?
The power consumption is 3 μA in operational mode.
- Does the LC709203FXE-01MH support I2C communication?
Yes, it supports I2C communication up to 400 kHz.
- Is the LC709203FXE-01MH environmentally compliant?
Yes, it is Pb-free, halogen-free/BFR-free, and RoHS compliant.
- What types of devices can the LC709203FXE-01MH be used in?
It can be used in wireless handsets, smartphones, MP3 players, digital cameras, portable game players, and USB-related devices.
- How does the LC709203FXE-01MH handle temperature compensation?
It handles temperature compensation via a thermistor input through the I2C interface.
