Stand-alone single-cell linear battery charger with power path BQ24074RGTT is a highly integrated standalone linear charger and power-path management IC from Texas Instruments designed for single-cell Li-Ion/Li-Polymer battery-powered portable devices. It supports charging directly from USB ports or external adapters while simultaneously powering the system load through integrated Dynamic Power Path Management (DPPM). The device is commonly used in portable electronics, IoT devices, wireless accessories, handheld medical devices, and battery-powered embedded systems. Key Features Single-cell Li-Ion/Li-Polymer battery charger Up to 1.5 A programmable charge current Integrated Dynamic Power Path Management (DPPM) USB-compliant charging support Selectable 100 mA / 500 mA USB current limits Programmable input current limit up to 1.5 A Supports both USB input and wall adapters Input overvoltage protection up to 28 V absolute maximum Integrated thermal regulation and thermal shutdown Reverse-current and short-circuit protection Programmable pre-charge and fast-charge safety timers Battery temperature monitoring via NTC thermistor input Charge status outputs for charging/done indication Current monitoring output (ISET) Compact 16-pin VQFN (3×3 mm) package Wide operating temperature range suitable for industrial applications Typical Applications TWS charging cases and earbuds Portable medical devices IoT and asset tracking systems Handheld gaming accessories Video doorbells and IP cameras Portable embedded systems and development boards Important Design Notes Designed specifically for 1-cell battery applications Requires proper thermal PCB layout due to linear charging architecture DPPM allows the system to operate even with a deeply discharged or missing battery Recommended for compact designs needing integrated charging and system power-path control #CommonPartsLibrary #IntegratedCircuit #PowerManagement

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