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

USB-to-UART Bridge CP2102N-A02-GQFN24 is a highly integrated USB-to-UART bridge controller from Silicon Labs. It provides a simple and cost-effective way to add USB connectivity to embedded systems by converting USB 2.0 Full-Speed communication into a standard UART interface. The device integrates the USB transceiver, oscillator, voltage regulator, and UART controller, minimizing external components and eliminating the need for USB firmware development. It is commonly used in microcontroller programming interfaces, industrial equipment, POS terminals, data loggers, and USB-to-serial adapters. Key Features USB 2.0 Full-Speed compliant (12 Mbps) interface. USB-to-UART bridge with data rates up to 3 Mbaud. Integrated USB transceiver; no external USB resistors required. Integrated oscillator; no external crystal required. On-chip 3.3 V voltage regulator. USB Battery Charger Detection (BC 1.2) support. Remote wakeup capability from USB suspend state. Low operating current of approximately 9.5 mA. Hardware and software flow control support. Internal configurable ROM for Vendor ID, Product ID, serial number, and USB descriptors. Royalty-free Virtual COM Port (VCP) drivers available for major operating systems. Operating temperature range: −40°C to +85°C. Compact 24-pin QFN (4 mm × 4 mm) package. Typical Applications USB-to-Serial adapters Microcontroller programming and debugging interfaces Industrial automation equipment Point-of-sale (POS) terminals Medical instruments Data acquisition and logging systems Embedded systems requiring USB connectivity #commonpartslibrary #integratedcircuit

M.2 CONN.P=0.5 6.7mm H conn The 91302-67-067R2M is a 67-position M.2 (NGFF) card-edge connector manufactured by UMAX. It is designed for connecting M.2 SSDs and PCIe-based expansion modules to a host PCB. The connector features an M-Key interface, making it suitable for high-speed PCIe storage applications such as NVMe solid-state drives. It is a surface-mount, right-angle receptacle with a 0.5 mm contact pitch and a 6.7 mm height above the PCB. Key Features M.2 M-Key connector Supports M-Key M.2 modules, commonly used for PCIe/NVMe SSDs. 67 contacts (67P) Standard pin count for M-Key M.2 card-edge connections. 0.5 mm pitch Fine-pitch design suitable for compact, high-density PCB layouts. Surface-mount, right-angle mounting Optimized for automated PCB assembly and low-profile system designs. 6.7 mm connector height Provides compatibility with standard M.2 card installation requirements. Female card-edge receptacle Accepts M.2 modules directly without additional adapters. RoHS compliant Meets environmental requirements for lead-free electronic assemblies. Typical Applications NVMe SSD sockets PCIe M.2 storage devices Embedded computing systems Industrial PCs Networking equipment Edge AI and IoT gateways Single-board computers requiring M.2 expansion #CommonPartsLibrary #Connector

Electronic Fuse Regulator 5.3A 20-WQFN (3x4) The TPS25940 is a compact, feature-rich eFuse (electronic fuse) power switch from Texas Instruments designed to provide advanced power-path protection and management for SSDs, storage systems, servers, telecom equipment, and other DC-powered applications. It integrates back-to-back MOSFETs for true reverse-current blocking, programmable current limiting, overvoltage/undervoltage protection, and controlled output slew-rate management in a small 20-pin WQFN package. Key Features Wide operating voltage range: 2.7 V to 18 V (20 V maximum input) Low 42 mΩ typical on-resistance (RDS(on)) Adjustable current limit from 0.6 A to 5.3 A True reverse-current blocking using integrated back-to-back FETs Fast reverse-voltage shutdown response of 1 µs Programmable output ramp-up (dV/dt control) for inrush-current management Programmable overvoltage (OVP) and undervoltage (UVP) protection thresholds Integrated IMON analog current-monitor output PGOOD and FLT status outputs for system monitoring Low-power DevSleep™ mode for SATA SSD applications Typical operating quiescent current of 200 µA Typical disabled current of 15 µA Operating junction temperature range from −40°C to +125°C UL 2367 recognized and designed for fault-safe operation under single-point failure conditions. Typical Applications PCIe, SATA, and SAS SSD/HDD storage devices Enterprise servers and storage systems RAID controller cards with holdup-power management Telecom switches and routers Set-top boxes, DTVs, and gaming consoles Adapter-powered equipment General-purpose smart load-switch and power-protection circuits. Package Information Package: 20-pin WQFN (RVC) Temperature range: −40°C to +85°C ambient operation Tape-and-reel packaging for automated assembly. #CommonPartsLibrary #IntegratedCircuit # TPS25940

USB-to-UART Bridge CP2102N CP2102N-A02-GQFN28R is a highly integrated USB-to-UART bridge controller from Silicon Labs that provides a simple and reliable interface between a USB host and an embedded system using a UART serial port. It eliminates the need for complex USB firmware development by handling all USB protocol functions internally and presenting a standard UART interface to the target device. The device is commonly used in microcontroller programming, debugging, industrial equipment, IoT devices, and USB-to-serial adapters. logging equipment Consumer and portable electronics Function: USB-to-UART Bridge Controller

Charger IC Lithium Ion/Polymer 29-VQFN-HR (4x4) The BQ25792 is a fully integrated switch-mode buck-boost charger for 1-4 cell Li-ion batteries and Li-polymer batteries. The integration includes 4 switching MOSFETs (Q1, Q2, Q3, Q4), input and charging current sensing circuits, the battery FET (QBAT) and all the loop compensation of the buck-boost converter. It uses NVDC power path management, regulating the system slightly above the battery voltage without dropping below a configurable minimum system voltage. When system power exceeds the input source rating, battery supplement mode supports the system without overloading the input source. BQ25792 supports the full input and output (OTG) voltage ranges for USB Type-C™ and USB power delivery (USB-PD) applications. • High power density, high integration buck-boost charger for 1-4 cell batteries supporting any USB PD 3.0 profile – Integrates four switching MOSFETs, BATFET – Integrates input and charging current sensing • Highly efficient – 750-kHz or 1.5-MHz switching frequencies – 5-A charging current with 10-mA resolution • 96.5% efficient: 16-V battery at 3A from 20V • Supports a wide range of input sources – 3.6-V to 24-V wide input operating voltage range with 30-V absolute maximum rating – Maximum power tracking with input voltage dynamic power management (VINDPM) up to 22 V and input current dynamic power management (IINDPM) up to 3.3 A – Detects USB BC1.2, SDP, CDP, DCP, HVDCP and non-standard adapters • Dual-input power mux controller (optional) for source selection • Narrow voltage DC (NVDC) power path management • Powers USB port from battery (USB OTG) – 2.8-V to 22-V OTG output voltage with 10-mV resolution to support USB-PD PPS – OTG output current regulation up to 3.32 A with 40-mA resolution • Flexible autonomous and I2C mode for optimal system performance • Integrated 16-bit ADC for voltage, current, and temperature monitoring • Low battery quiescent current – 21 µA for battery only operation – 600 nA in Charger Shutdown Mode • High accuracy – +0.65% to -0.85% charge voltage regulation for 2S-4S batteries – ±5% charge current regulation – ±5% input current regulation • Safety – Thermal regulation and thermal shutdown – Input/battery OVP and OCP – Converter MOSFETs OCP – Charging safety timer • Package – 29-Pin 4 mm × 4 mm QFN #CommonPartsLibrary #IntegratedCircuit #PowerManagement #Battery-Charger

USBPD and Multiple Fast Charging Protocol Receiving Chip CH224 CH224K is a USB Power Delivery protocol controller integrated circuit designed for fast-charging and programmable USB Type-C power negotiation applications. The device enables intelligent voltage trigger and power profile selection from compatible USB Type-C and USB PD power sources, making it suitable for embedded power systems, portable electronics, development boards, and battery-powered devices. This controller supports automatic communication with USB Type-C power adapters to negotiate higher voltage and current profiles for efficient power delivery. It simplifies USB PD implementation by integrating protocol handling, voltage selection logic, and interface control into a compact low-power solution with minimal external component requirements. The CH224K is widely used in DIY electronics, portable charging systems, embedded controllers, IoT hardware, industrial devices, and USB Type-C powered applications requiring stable and configurable DC power input. Its compact surface-mount package and simplified design architecture enable rapid integration into space-constrained PCB layouts. #commonpartslibrary #usbtypec #usbpd #powerdelivery #powermanagement #embeddedhardware #fastcharging #electronicscomponents #portableelectronics #surfacemountdevice

The 10D-9 is an NTC (Negative Temperature Coefficient) thermistor primarily used as an inrush current limiter in power supply circuits. It has a nominal resistance of 10 Ω at 25°C and a disk diameter of approximately 9 mm. When power is first applied, the thermistor's high resistance limits the surge current. As it heats up during normal operation, its resistance decreases significantly, allowing current to flow with minimal power loss. Key Features 10 Ω nominal resistance at 25°C. NTC characteristic – resistance decreases as temperature increases. Inrush current suppression for protecting power supplies and electronic equipment from startup current spikes. Low residual resistance after warm-up, minimizing power loss during normal operation. High reliability and long-term stability. Radial leaded package with epoxy/silicone-coated thermistor disk. Typical operating temperature range up to -40°C to +175°C (manufacturer-dependent). Typical Applications Switching Mode Power Supplies (SMPS) AC/DC adapters Battery chargers LED drivers UPS systems Motor drives and controllers Monitors, TVs, and PC power supplies Electronic ballasts and lighting equipment #CommonPartsLibrary #Thermistor