Overview
The UC3906DWG4, produced by Texas Instruments, is a linear lead-acid battery charger integrated circuit. This device is part of the UC3906 series, designed to optimally control the charge and hold cycle for sealed lead-acid batteries. It ensures maximum battery capacity and life by maintaining optimum charging conditions over an extended temperature range.
The UC3906DWG4 integrates all necessary circuitry to monitor and control both the output voltage and current of the charger, utilizing three separate charge states: a high current bulk-charge state, a controlled over-charge state, and a precision float-charge or standby state.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | SOIC (DW) |
| Pins | 16 |
| Operating Temperature Range (°C) | -20 to 70 |
| Package Quantity | 40 (Carrier), 2000 (Reel) |
| Standby Supply Current | Typical 1.6mA |
| Base Drive Current | Up to 25mA |
| RoHS Compliance | Yes, RoHS & Green |
Key Features
- Optimum control for maximum battery capacity and life
- Internal state logic provides three charge states: bulk-charge, over-charge, and 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
- Supply under-voltage sense circuit with logic output
- Over-charge state monitoring and termination capabilities
- Charge enable comparator with trickle bias output for low current turn-on mode
Applications
The UC3906DWG4 is suitable for various applications involving sealed lead-acid batteries, 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 UC3906DWG4?
The UC3906DWG4 is a linear lead-acid battery charger integrated circuit designed to optimally control the charge and hold cycle for sealed lead-acid batteries.
- What are the three charge states provided by the UC3906DWG4?
The three charge states are bulk-charge, over-charge, and float-charge (or standby state).
- What is the operating temperature range of the UC3906DWG4?
The operating temperature range is -20°C to 70°C.
- How many pins does the UC3906DWG4 have?
The UC3906DWG4 has 16 pins.
- What is the typical standby supply current of the UC3906DWG4?
The typical standby supply current is 1.6mA.
- Does the UC3906DWG4 support RoHS compliance?
Yes, the UC3906DWG4 is RoHS compliant and also meets Green standards.
- What is the maximum base drive current provided by the UC3906DWG4?
The maximum base drive current is up to 25mA.
- Can the UC3906DWG4 monitor and terminate the over-charge state externally?
Yes, the UC3906DWG4 can monitor and terminate the over-charge state externally using the over-charge indicate output and over-charge terminate input.
- What types of applications is the UC3906DWG4 suitable for?
The UC3906DWG4 is suitable for automotive battery charging systems, industrial battery chargers, backup power systems, telecommunication equipment, and Uninterruptible Power Supplies (UPS).
- What package types are available for the UC3906DWG4?
The UC3906DWG4 is available in SOIC (DW) and PDIP (N) package types.
