UC3906N Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The UC3906N is a single-channel linear sealed lead-acid battery charger controller IC by Texas Instruments with up to 40 V input. Key specs: fixed charge algorithm with overcharge protection, 16-pin DIP package, and JESD-609 e4 halogen-free construction. Available from competitive pricing, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- UC3906N Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.2558(MOQ 25)
- Temp Range
- -20.0°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of UC3906N?
- Dedicated sealed lead-acid battery charge controller with 3-stage charge algorithm (bulk, overcharge, float) automating the complete charge cycle up to 40 V input
- Precision voltage and current monitoring with adjustable sense resistor programming enabling accurate charge termination and float maintenance for 6 V to 24 V battery packs
- 16-pin DIP package with fixed non-adjustable threshold simplifying prototype and through-hole PCB integration in standby power and UPS charger designs
What is UC3906N used for?
The UC3906N is designed for sealed lead-acid battery charging circuits in uninterruptible power supplies, emergency lighting systems, and standby battery backup equipment requiring an automated multi-stage charge sequence. Its support for input voltages up to 40 V and built-in overcharge protection make it suitable for 12 V and 24 V lead-acid battery packs commonly found in alarm panels, telecom equipment, and industrial backup power systems. The through-hole 16-pin DIP form factor simplifies integration into prototype boards and repair-friendly industrial designs where solderability and replaceability are prioritized.
What are the specifications of UC3906N?
| Pbfree Code | Yes |
| Date Of Intro | 1999-11-01 |
| YTEOL | 15 |
| Adjustable Threshold | NO |
| Analog IC - Other Type | LINEAR BATTERY CHARGER |
| Input Voltage-Max | 40V |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 40V |
| Supply Voltage-Min (Vsup) | 5V |
| Supply Voltage-Nom (Vsup) | 10V |
| Surface Mount | NO |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
| Country of Origin | Mexico |
Where can I find the UC3906N datasheet?
UC3906N Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for UC3906N?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What battery chemistry is the UC3906N designed for, and what charge stages does it manage?
The UC3906N is specifically designed for sealed lead-acid batteries and manages a 3-stage charge sequence comprising bulk constant-current charging, overcharge voltage maintenance, and float voltage maintenance, automating the full charge cycle from a depleted state to fully charged float condition without requiring microcontroller supervision.
What is the maximum input voltage the UC3906N can accept, and which battery pack voltages does it support?
The UC3906N accepts input voltages up to 40 V, allowing it to charge 6 V, 12 V, and 24 V sealed lead-acid battery packs from rectified AC adapters or unregulated DC sources, covering the most common standby power and UPS battery configurations used in alarm systems, telecom racks, and emergency lighting.
How does the UC3906N set charge current, and what external component determines the current limit?
The UC3906N uses an external sense resistor connected in series with the charge path to set the maximum charge current; for example, a 0.1 Ω sense resistor limits current to approximately 1 A when the controller's internal sense threshold is around 100 mV, and engineers can scale the resistor value to match their specific battery ampere-hour capacity requirements.
What package does the UC3906N come in, and how does that affect PCB assembly options?
The UC3906N is housed in a 16-pin PDIP (DIP-16) through-hole package with 2.54 mm lead pitch, which supports hand soldering, socket insertion for prototyping, and wave soldering, making it straightforward to assemble on prototype breadboards and repair-friendly industrial PCBs where socketed ICs are preferred for in-field serviceability.
Is the UC3906N suitable for a long-service-life UPS design from a material compliance standpoint?
Yes, the UC3906N carries a JESD-609 e4 code confirming Level 4 halogen-free construction with chlorine and bromine below 900 ppm, and its YTEOL rating of 15 years indicates continued manufacturer supply support until at least 2034, making it a viable choice for long-lifecycle UPS and standby power products requiring sustained replacement part availability.
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Why Buy from FindMyChip
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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $10.5900 | $264.75 |
| 28+ | $7.2182 | $202.11 |
| 36+ | $6.9776 | $251.19 |
| 48+ | $6.2558 | $300.28 |
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