I2C-Controlled 5A Buck or Boost Charger with NVDC Power Management and USB OTG for 2-Cell to 4-Cell Battery Pack Applications #ultralibrarian

I2C-Controlled 5A Buck or Boost Charger with NVDC Power Management and USB OTG for 2-Cell to 4-Cell Battery Pack Applications #ultralibrarian

Polymeric PTC Resettable Fuse 6V 3 A Ih Surface Mount 1812 (4532 Metric), Concave The 1812L300MR is a surface-mount resettable fuse (PPTC – Polymer Positive Temperature Coefficient) designed to provide overcurrent protection in electronic circuits. When excessive current flows, the device increases its resistance sharply, limiting current to a safe level. Once the fault condition is removed and power is cycled or reduced, the device resets automatically. This component is commonly used in power supply lines, battery-powered devices, USB ports, and general consumer electronics where resettable protection is preferred over one-time fuses. Key Features Resettable overcurrent protection device (PPTC technology) Surface-mount package (1812 footprint) Automatic recovery after fault removal Low resistance in normal operation Fast trip response to overcurrent events RoHS compliant and lead-free Electrical Characteristics Hold Current (I_hold): 3.0 A Trip Current (I_trip): ~6.0 A Maximum Voltage Rating: 6 VDC Maximum Current Rating: 40 A (short duration fault) Initial Resistance (R_min / R_max): ~0.015 Ω / 0.050 Ω Trip Time: Dependent on current and ambient conditions Thermal Characteristics Operating Temperature Range: -40°C to +85°C Storage Temperature Range: -40°C to +85°C Typical Power Dissipation: Dependent on fault condition Mechanical Characteristics Package Type: Surface Mount (SMD) Package Size: 1812 (4.5 mm × 3.2 mm approx.) Termination: Nickel barrier with matte tin plating Mounting: Reflow solder compatible Applications Power supply protection USB and peripheral ports Battery pack protection Consumer electronics Industrial control circuits Compliance and Standards RoHS compliant Halogen-free (depending on manufacturer variant) UL recognized (check specific manufacturer certification) Notes Trip and hold currents are specified at 25°C; derating is required at higher temperatures Device performance depends on PCB layout and thermal environment Proper spacing and copper area improve heat dissipation and reliability #commonpartslibrary #circuitprotection #ptc #fuse

10KF3950 is an NTC (Negative Temperature Coefficient) thermistor with a nominal resistance of 10 kΩ at 25°C and a B-value of 3950 K. Its resistance decreases as temperature increases, making it suitable for temperature sensing, compensation, monitoring, and control applications in electronic circuits. It is commonly available in compact SMD packages such as 0402, 0603, and 0805. Key Features Resistance at 25°C: 10 kΩ B Constant (25/50°C): 3950 K ±1% Resistance Tolerance: ±1% Operating Temperature Range: -40°C to +125°C Rated Power: 100 mW Fast thermal response due to small chip size High sensitivity to temperature changes RoHS compliant Available in 0402, 0603, and 0805 SMD packages for space-constrained designs Typical Applications Battery pack temperature monitoring Power supply thermal protection Consumer electronics Industrial control systems Automotive electronics HVAC equipment Smart home devices Temperature compensation circuits #CommonPartsLibrary #thermistor #NTC

Fuses 2410BP-30A FUSE-SMD_L6.1-W2.6 LCSC Part Number: C2838932 JLCPCB Part Class: Extended Part Manufactured by prosemi(普罗森美) PROSEMI 2410BP high I²t surface-mount fuse for power battery pack protection, designed for overload and short-circuit protection in compact PCB applications. Ceramic square body with silver-plated end caps, UL248-1 designed, compatible with lead-free and high-temperature reflow soldering, RoHS compliant and halogen-free, wide operating temperature range, strong arc suppression characteristics. Available in 20A to 40A ratings with 63V to 72V DC voltage rating, high interrupting rating up to 72V @ 500A or 63V @ 500A, suitable for battery packs, power supplies, game systems, industrial equipment and telecom systems. Search Keywords: PROSEMI 2410BP, 2410BP fuse, 2410BP-20A, 2410BP-25A, 2410BP-30A, 2410BP-40A, high I2t fuse, power battery pack fuse, SMD battery fuse, surface mount high current fuse, 2410 ceramic fuse, 20A SMD fuse, 25A SMD fuse, 30A SMD fuse, 40A SMD fuse, battery protection fuse, short circuit protection fuse, PROSEMI fuse Hashtags: #PROSEMI2410BP #2410BP #2410BP20A #2410BP25A #2410BP30A #2410BP40A #SMDFuse #SurfaceMountFuse #HighI2tFuse #BatteryFuse #BatteryPackProtection #HighCurrentFuse #CeramicFuse #ShortCircuitProtection #OverloadProtection #RoHSFuse

BQ29209DRBR – Integrated 2-cell Li-ion/Li-polymer battery protection and management IC. Provides overvoltage, undervoltage, and overcurrent protection for each cell while incorporating automatic cell balancing to maintain uniform charge levels. Designed for compact 2S battery pack applications, it ensures safe and reliable operation in portable electronics, battery-powered devices, and custom BMS circuits. Ideal for extending battery life, preventing overcharge or deep discharge, and supporting high-efficiency energy management. #2SLiIonBMS #BatteryProtectionIC #CellBalancing #OvervoltageProtection #UndervoltageProtection #OvercurrentProtection #PortableElectronics #BMSDesign

2 to 16 Stacked Cells Battery Pack Fuel Gauge with Level LEDs #ultralibrarian

2 to 10 Stacked Cells Battery Pack Fuel Gauge with Level LEDs #ultralibrarian

2 to 16 Stacked Cells Battery Pack Fuel Gauge with Resistance Detection and Thermal Model #ultralibrarian

2 to 16 Stacked Cells Battery Pack Fuel Gauge with Level LEDs #ultralibrarian

2 to 16 Stacked Cells Battery Pack Fuel Gauge with Resistance Detection and Thermal Model #ultralibrarian

2 to 10 Stacked Cells Battery Pack Fuel Gauge #ultralibrarian

2 to 10 Stacked Cells Battery Pack Fuel Gauge #ultralibrarian

2 to 16 Stacked Cells Battery Pack Fuel Gauge #ultralibrarian

2 to 10 Stacked Cells Battery Pack Fuel Gauge with Level LEDs #ultralibrarian

2 to 16 Stacked Cells Battery Pack Fuel Gauge #ultralibrarian

Li+ Battery Protection IC for Single Cell Pack, SOT-23-5 battery protection li-ion li-po SOT?23*

Li+ Battery Protection IC for Single Cell Pack, SOT-23-6 battery protection li-ion li-po SOT?23*

Single cell, Li-Ion/Li-Po charge management controller, 4.20V, Tri-State Status Output, in SOT23-5 package battery charger lithium SOT?23*

Single cell, Li-Ion/Li-Po charge management controller, 4.20V, Open-Drain Status Output, in SOT23-5 package battery charger lithium SOT?23*

Board Mount Humidity Sensors Intermediate Humidity and Temperature Sensor Humidity, Temperature 0 ~ 100% RH I2C ±1.8% RH 4 s Surface Mount The SHT41-AD1B-R2 is a fully calibrated, low-power environmental sensor that measures relative humidity (RH) and temperature. It integrates sensing elements, signal processing, and a digital interface into a small surface-mount package, making it ideal for space-constrained designs. Key Features Sensor Type: Digital humidity and temperature sensor Interface: I²C (easy MCU integration) Supply Voltage: ~1.08 V to 3.6 V Humidity Accuracy: up to ±1.8% RH (typical) Temperature Accuracy: up to ±0.2 °C (typical) Response Time: Fast measurement and low latency Power Consumption: Ultra-low, suitable for battery devices Package: DFN (compact, ~1.5 × 1.5 mm) Factory Calibration: No external calibration required Functional Overview The sensor uses capacitive humidity sensing combined with a bandgap temperature sensor. Internal electronics convert these measurements into digital data via I²C, eliminating the need for external ADCs or complex signal conditioning. Design Advantages Small footprint for compact PCBs Low power consumption for IoT and portable devices High reliability with long-term stability Fast response time for real-time monitoring Simple integration with microcontrollers Typical Applications IoT and smart home devices HVAC and climate control systems Wearables and portable electronics Industrial monitoring systems Environmental data logging #CommonPartsLibrary #Sensors,-Transducer #Humidity #Moisture-Sensor #SHT4x

5V USB 1000mA I2C-Controlled Linear Charger with Power Path Management for Single-Cell Li-Ion Battery in QFN Package #ultralibrarian

5V USB 1000mA I2C-Controlled Linear Charger with Power Path Management for Single-Cell Li-Ion Battery in QFN Package #ultralibrarian

Dual-channel H-bridge motor driver The DRV8833PWR is a dual H-bridge motor driver IC from Texas Instruments designed for driving small DC motors, stepper motors, solenoids, and other inductive loads in low-voltage battery-powered systems. It integrates two full H-bridge outputs that allow independent or combined control of two motors or one bipolar stepper motor. It is commonly used in robotics, toys, printers, and embedded motion-control applications due to its compact size and built-in protection features. Key Features Dual H-Bridge Motor Driver Drives 2 DC motors independently or 1 bipolar stepper motor Wide Supply Voltage Range Operates from 2.7 V to 10.8 V motor supply (VM) Output Current Capability Up to 2 A peak per H-bridge (package-dependent RMS limits apply) Supports parallel operation for higher current drive Low On-Resistance MOSFET Output Stage Reduces power loss and improves efficiency in battery-powered designs PWM Current Regulation Built-in current limiting and chopping control for better motor performance Multiple Control Modes Forward, reverse, brake, and coast control via simple logic inputs Protection Features Overcurrent protection Short-circuit protection Undervoltage lockout (UVLO) Thermal shutdown Low-Power Sleep Mode Reduces standby current for battery applications Compact Package 16-pin TSSOP (PW package), optimized for space-constrained PCB designs #CommonPartsLibrary #IntegratedCircuit #PowerManagement

Charger IC Lithium Ion 16-VQFN (3x3) The BQ24075QRGTRQ1 is an automotive-qualified standalone linear battery charger and power-path management integrated circuit designed for single-cell Li-Ion and Li-Polymer battery applications. The device integrates battery charging, system power regulation, input current limiting, and dynamic power-path management into a compact solution optimized for portable and embedded automotive systems. The charger supports USB and external adapter power sources while automatically managing system load distribution between the input supply and battery. Integrated thermal regulation and safety protection features improve reliability under varying operating conditions and harsh automotive environments. The BQ24075QRGTRQ1 supports programmable charging parameters, battery temperature monitoring, and power-good status reporting. The device is qualified for automotive applications and is suitable for infotainment systems, telematics, portable instrumentation, embedded battery-powered modules, and industrial handheld equipment. Key Features Automotive-qualified battery charger IC Single-cell Li-Ion and Li-Polymer battery support Integrated dynamic power-path management USB and adapter input compatibility Programmable fast-charge current control Integrated thermal regulation Input current limiting capability Battery temperature monitoring support Automatic charge termination functionality Short-circuit and over-temperature protection Power-good and charging status indication Compact surface-mount package Optimized for portable and embedded applications Electrical Characteristics Linear charging architecture High integration power management solution Dynamic load sharing between system and battery Stable regulated system output Programmable charging voltage and current Thermal foldback protection operation Low standby and shutdown current consumption Integrated safety timer functionality Wide input operating voltage range Applications Automotive infotainment systems Portable embedded electronics Industrial handheld equipment Battery-powered control modules Telematics systems USB-powered charging systems Portable instrumentation Data logging devices Embedded IoT products Rechargeable battery management systems Package Information Package Type: VQFN Mounting Type: Surface Mount Automotive-grade integrated circuit package RoHS compliant configuration available #commonpartslibrary #integratedcircuit #batterycharger #powermanagement #automotiveelectronics #lithiumbattery #embeddedhardware #usbcharging #portableelectronics #powerpathmanagement