LilyPad 5V Step-Up AAA Battery Boost Power Supply Module

LilyPad 5V Step-Up AAA Battery Boost Power Supply Module is a compact wearable power converter board featuring an integrated single-cell AAA battery clip and a high-efficiency DC-DC step-up boost converter. Engineered to boost the 1.2V to 1.5V output of a standard alkaline or NiMH AAA battery up to a stable 5.0V DC regulated supply, it delivers portable, readily available battery power to wearable LilyPad Arduino microcontrollers, sensors, and LED networks.

Key Features:

• Integrated AAA Battery Holder: Heavy-duty surface-mount metal clips securely hold a standard AAA battery directly on the board.
• High-Efficiency 5V Boost Converter: Efficient step-up converter circuit boosts single-cell 1.2V–1.5V inputs up to a regulated 5.0V DC output.
• Onboard Slide Power Switch: Integrated miniature ON/OFF slide switch enables convenient power switching without removing the battery.
• Oversized Sewable Tabs: Generously sized gold-plated connection pads allow easy stitching with conductive thread or hookup wire.
• Short-Circuit & Over-Current Protected: Integrated protection features prevent damage in case of accidental thread short-circuits.
• Readily Available Battery Fuel: Utilizes ubiquitous AAA alkaline or NiMH rechargeable batteries found anywhere in the world.

Technical Specifications:

• Input Battery Voltage: 1.2V to 1.5V DC (operates from 0.8V to 3.0V DC boost window)
• Regulated Output Voltage: 5.0V DC ± 3%
• Continuous Output Current: Up to 100 mA continuous (up to 200 mA peak depending on battery health)
• Conversion Efficiency: Up to 82% boost efficiency
• Supported Battery Types: Standard 1.5V AAA Alkaline or 1.2V AAA NiMH rechargeable batteries
• Quiescent Current: Less than 15 µA when switched OFF
• Operating Temperature: -20°C to +60°C

Mechanical Specifications:

• Form Factor: Elongated rectangular sewable battery board
• PCB Substrate: High-grade double-sided FR4 fiberglass board with purple soldermask
• Battery Clips: Nickel-plated spring steel battery terminals for AAA cells
• Sewing Pad Diameter: 3.0 mm inner clearance holes with immersion gold plating
• Weight: Approximately 8.0 g (without battery)

Dimensions:

• Overall Length: 56.0 mm
• Overall Width: 15.0 mm
• Overall Height: 15.0 mm (including AAA battery clips)

Pinout and Wiring:

• + (5V Output): Stitched with conductive thread to LilyPad microcontroller +5V power rail
• – (GND): Stitched with conductive thread to system power ground rail (0V)
• Battery Clip (+/-): Positive and negative terminals holding a standard AAA cell

Datasheet Reference:

• Refer to the SparkFun LilyPad AAA Power Supply design documentation and step-up converter technical specifications for voltage discharge curves, internal resistance considerations, and e-textile sewing best practices.

Commonly Used in:

• Convenient battery power supplies for wearable Halloween costumes, cosplay props, and holiday sweaters
• Educational wearable STEM school workshops where rechargeable LiPo batteries are impractical
• Lightweight portable electronic jewelry, badges, and glowing accessories
• Remote sensor beacons operating on easily swappable household batteries

Applications:

• Wearable 5V regulated battery power supply
• AAA step-up booster for LilyPad Arduino
• Garment LED illumination power source
• Educational e-textile project power pack
• Emergency battery booster for 5V microcontroller circuits

Equivalent Models:

• SparkFun LilyPad Simple Power (DEV-11893)
• LilyPad Lithium Battery Boost Power Step Up Module
• 1.5V to 5V DC-DC Boost Converter Module
• Keyestudio AAA Battery Power Shield

Package Includes:

• 1 × LilyPad 5V Step-Up AAA Battery Boost Power Supply Module