UC3909DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UC3909DWG4 is a lead-acid battery charge controller IC from Texas Instruments, featuring current-mode PWM control with an input voltage range of 8.8V to 35V. It provides up to 4.5mA output in a 20-pin SOIC package, ideal for precision battery management. Available from stock worldwide with fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- UC3909DWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dedicated lead-acid battery charge controller with multi-stage charging algorithm support for optimal battery health
- Wide input voltage range of 8.8V to 35V enabling compatibility with diverse power supply systems
- Current-mode PWM control technique providing precise charge regulation and inherent overcurrent protection
Applications
The UC3909DWG4 is designed for lead-acid battery charging applications in industrial equipment, UPS systems, and solar energy storage installations. Its current-mode control enables precise multi-stage charge management to extend battery life and maximize charge efficiency. This device is commonly deployed in telecom backup power systems and automotive battery management where reliable charging up to 35V is essential.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Analog IC - Other Type | BATTERY CHARGE CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 35V |
| Input Voltage-Min | 8.8V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PDSO-G20 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 0.1A |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP20,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Current-Max (Isup) | 19mA |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | YES |
| Switcher Configuration | SINGLE |
| Switching Frequency-Max | 242kHz |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What battery chemistry is the UC3909DWG4 designed for?
The UC3909DWG4 is specifically designed as a lead-acid battery charge controller, featuring algorithms optimized for the multi-stage charging profiles required to safely and efficiently charge sealed lead-acid, flooded, and gel-type batteries.
What is the input voltage range and output current of the UC3909DWG4?
The UC3909DWG4 operates with an input voltage range from 8.8V minimum to 35V maximum, with a nominal voltage of 15V, and provides up to 4.5mA of output current, making it suitable for a wide range of battery charging system designs.
What package does the UC3909DWG4 come in?
The UC3909DWG4 is available in a 20-pin SOIC (Small Outline IC) package, conforming to JESD-30 code R-PDSO-G20, offering a compact footprint suitable for space-constrained battery charge controller designs.
What control technique does the UC3909DWG4 employ?
The UC3909DWG4 uses current-mode pulse width modulation (PWM) as its control technique, which provides precise regulation of the charging current and voltage, inherent pulse-by-pulse current limiting, and improved transient response for battery charge management.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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