UC2909DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The UC2909DWG4 is a lead-acid battery charge controller IC from Texas Instruments, utilizing current-mode pulse width modulation for precise charge regulation. It operates from an input voltage range of 8.8V to 35V and provides up to 4.5 mA output current in a 20-pin SOIC package. Designed for reliable battery management in embedded and industrial power systems, from competitive pricing in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- OBSOLETE
- Datasheet
- UC2909DWG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode PWM control for precise and efficient lead-acid battery charging with fast dynamic response
- Wide input voltage range of 8.8V to 35V accommodating diverse DC power supply and automotive environments
- Compact 20-pin SOIC package enabling high-density PCB layouts in space-constrained power management designs
- RoHS-compliant (Pb-free) construction supporting environmentally responsible and modern manufacturing standards
Applications
The UC2909DWG4 is designed for lead-acid battery charger circuits in uninterruptible power supplies (UPS), telecom backup systems, and industrial equipment. Its current-mode PWM control enables precise charge voltage and current regulation, extending battery life and ensuring safe charging. The wide input voltage range allows integration in both 12V and 24V battery systems used in renewable energy storage and automotive applications.
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 | INDUSTRIAL |
| 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 UC2909DWG4 designed to charge?
The UC2909DWG4 is specifically designed for lead-acid battery charging, using current-mode pulse width modulation to regulate both the charge voltage and current, ensuring optimal and safe charging of sealed or flooded lead-acid cells.
What is the input voltage range of the UC2909DWG4?
The UC2909DWG4 operates with an input voltage range of 8.8V to 35V, with a nominal operating point of 15V, making it suitable for a wide variety of 12V and 24V lead-acid battery charger applications in industrial and telecom environments.
What package does the UC2909DWG4 use and is it RoHS compliant?
The UC2909DWG4 is housed in a 20-pin Small Outline IC (SOIC) package with a lead-free, RoHS-compliant finish (JESD-609 Code e4), making it suitable for environmentally compliant modern electronics manufacturing.
What control method does the UC2909DWG4 use for battery charging?
The UC2909DWG4 employs current-mode pulse width modulation (PWM) control, which provides fast transient response, inherent cycle-by-cycle current limiting, and improved stability compared to voltage-mode control in battery charger applications.
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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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