Overview
The UC2906DWG4 is a linear lead-acid battery charger integrated circuit produced by Texas Instruments. This device is designed to optimally control the charge and hold cycle for sealed lead-acid batteries. It monitors and controls both the output voltage and current of the charger through three separate charge states: a high current bulk-charge state, a controlled over-charge state, and a precision float-charge or standby state. The UC2906DWG4 ensures optimum charging conditions over an extended temperature range, making it suitable for various battery charging applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC (DW) | |
| Pins | 16 | |
| Operating Temperature Range | -40 to 70 | °C |
| Package Quantity | 40 (Carrier/TUBE) | |
| Standby Supply Current | 1.6 | mA |
| Base Drive Current | Up to 25 | mA |
| RoHS Compliance | Yes |
Key Features
- Optimum control for maximum battery capacity and life
- Internal state logic provides three charge states: bulk-charge, controlled over-charge, and precision float-charge
- Precision reference tracks battery requirements over temperature
- Controls both voltage and current at the charger output
- System interface functions
- Typical standby supply current of only 1.6mA
- Separate voltage loop and current limit amplifiers regulate output levels
- Charge enable comparator with trickle bias output for low current turn-on mode
- Supply under-voltage sense circuit with logic output
- Over-charge state monitoring and termination capabilities
Applications
The UC2906DWG4 is suitable for a variety of applications involving sealed lead-acid battery charging, including:
- Automotive battery charging systems
- Industrial battery chargers
- Backup power systems
- Telecommunication equipment
- Uninterruptible Power Supplies (UPS)
Q & A
- What is the primary function of the UC2906DWG4?
The UC2906DWG4 is a linear lead-acid battery charger integrated circuit designed to control the charge and hold cycle for sealed lead-acid batteries.
- What are the three charge states provided by the UC2906DWG4?
The three charge states are: high current bulk-charge, controlled over-charge, and precision float-charge or standby state.
- What is the operating temperature range of the UC2906DWG4?
The operating temperature range is -40°C to 70°C.
- How many pins does the UC2906DWG4 have?
The UC2906DWG4 has 16 pins.
- What is the typical standby supply current of the UC2906DWG4?
The typical standby supply current is 1.6mA.
- Does the UC2906DWG4 support RoHS compliance?
Yes, the UC2906DWG4 is RoHS compliant.
- What is the purpose of the separate voltage loop and current limit amplifiers in the UC2906DWG4?
These amplifiers regulate the output voltage and current levels in the charger.
- How does the UC2906DWG4 handle over-charge conditions?
The UC2906DWG4 can monitor and terminate the over-charge state using the over-charge indicate output and over-charge terminate input.
- What is the base drive current capability of the UC2906DWG4?
The UC2906DWG4 can supply up to 25mA of base drive to an external pass device.
- In what types of applications is the UC2906DWG4 commonly used?
The UC2906DWG4 is commonly used in automotive battery charging systems, industrial battery chargers, backup power systems, telecommunication equipment, and Uninterruptible Power Supplies (UPS).
