UC3909DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

Name: UC3909DWG4
Brand: Texas Instruments
SKU: UC3909DWG4
Availability: InStock

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.

OBSOLETEIntegrated CircuitVerified May 2026

Package / Visual Reference

UC3909DWG4Small Outline Packages

Quick Facts

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

What are the key features of UC3909DWG4?

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

What is UC3909DWG4 used for?

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.

What are the specifications of UC3909DWG4?

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

Where can I find the UC3909DWG4 datasheet?

UC3909DWG4 Datasheet Download

Official datasheet from Texas Instruments

What are equivalent replacements for UC3909DWG4?

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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UC3909DWG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock

What are the key features of UC3909DWG4?

What is UC3909DWG4 used for?

What are the specifications of UC3909DWG4?

Compliance & Regulatory

Where can I find the UC3909DWG4 datasheet?

What are equivalent replacements for UC3909DWG4?

Frequently Asked Questions

What battery chemistry is the UC3909DWG4 designed for?

What is the input voltage range and output current of the UC3909DWG4?

What package does the UC3909DWG4 come in?

What control technique does the UC3909DWG4 employ?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About Texas Instruments

More from Texas Instruments

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