UC2909DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

Name: UC2909DWG4
Brand: Texas Instruments
SKU: UC2909DWG4
Availability: InStock

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.

OBSOLETEIntegrated CircuitVerified May 2026

Package / Visual Reference

UC2909DWG4Small Outline Packages

Quick Facts

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

What are the key features of UC2909DWG4?

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

What is UC2909DWG4 used for?

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.

What are the specifications of UC2909DWG4?

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

Where can I find the UC2909DWG4 datasheet?

UC2909DWG4 Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for UC2909DWG4?

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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UC2909DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

What are the key features of UC2909DWG4?

What is UC2909DWG4 used for?

What are the specifications of UC2909DWG4?

Compliance & Regulatory

Where can I find the UC2909DWG4 datasheet?

What are equivalent replacements for UC2909DWG4?

Frequently Asked Questions

What battery chemistry is the UC2909DWG4 designed to charge?

What is the input voltage range of the UC2909DWG4?

What package does the UC2909DWG4 use and is it RoHS compliant?

What control method does the UC2909DWG4 use for battery charging?

Related Guides

STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply

STM32H725IGT3 High-Performance MCU Design Guide

150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing

STEF05SGR 5 V eFuse Protection Design Guide

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

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