Battery Management ICs

The YFW AO3400 is a 30V N-Channel Enhancement MOSFET designed for low-voltage and high-speed switching applications. It uses advanced trench MOSFET technology to achieve low on-resistance (RDS(on)), fast switching performance, and efficient power handling in a compact SOT-23 package. It is commonly used in load switching, DC-DC converters, battery-powered devices, motor control, LED driving, and PWM switching circuits. Key Features N-Channel Enhancement Mode MOSFET Drain-Source Voltage (VDS): 30V Continuous Drain Current (ID): up to 5.8A Low RDS(on): < 28mΩ @ VGS = 10V < 33mΩ @ VGS = 4.5V < 52mΩ @ VGS = 2.5V Logic-Level Gate Drive Compatible Fast Switching Speed Low Gate Charge Compact SOT-23 Package Suitable for PWM and Load Switch Applications RoHS / Pb-Free Compatible Typical Applications Power switching DC-DC converters Battery management systems Motor and fan control LED drivers Portable electronics Microcontroller-based switching circuits #CommonPartsLibrary #Transistor #FET #Mosfet

Charger IC Lithium Ion/Polymer SOT-23-5 The MCP73831/2 devices are highly advanced linear charge management controllers for use in spacelimited, cost-sensitive applications. The MCP73831/2 are available in an 8-Lead, 2 mm x 3 mm DFN package or a 5-Lead, SOT-23 package. Along with their small physical size, the low number of external components required make the MCP73831/2 ideally suited for portable applications. For applications charging from a USB port, the MCP73831/2 adhere to all the specifications governing the USB power bus. The MCP73831/2 employ a constant-current/constantvoltage charge algorithm with selectable preconditioning and charge termination. The constant voltage regulation is fixed with four available options: 4.20V, 4.35V, 4.40V or 4.50V, to accommodate new, emerging battery charging requirements. The constant current value is set with one external resistor. The MCP73831/2 devices limit the charge current based on die temperature during high power or high ambient conditions. This thermal regulation optimizes the charge cycle time while maintaining device reliability. Several options are available for the preconditioning threshold, preconditioning current value, charge termination value and automatic recharge threshold. The preconditioning value and charge termination value are set as a ratio or percentage of the programmed constant current value. Preconditioning can be disabled. Refer to Section 1.0 “Electrical Characteristics” for available options and the Product Identification System for standard options. The MCP73831/2 devices are fully specified over the ambient temperature range of -40°C to +85°C. Linear Charge Management Controller: - Integrated Pass Transistor - Integrated Current Sense - Reverse Discharge Protection • High-Accuracy Preset Voltage Regulation: + 0.75% • Four Voltage Regulation Options: - 4.20V, 4.35V, 4.40V, 4.50V • Programmable Charge Current: 15 mA to 500 mA • Selectable Preconditioning: - 10%, 20%, 40%, or Disable • Selectable End-of-Charge Control: - 5%, 7.5%, 10%, or 20% • Charge Status Output - Tri-State Output - MCP73831 - Open-Drain Output - MCP73832 • Automatic Power-Down • Thermal Regulation • Temperature Range: -40°C to +85°C • Packaging: - 8-Lead, 2 mm x 3 mm DFN - 5-Lead, SOT-23 Applications • Lithium-Ion/Lithium-Polymer Battery Chargers • Personal Data Assistants • Cellular Telephones • Digital Cameras • MP3 Players • Bluetooth Headsets • USB Chargers #commonpartslibrary #integratedcircuit #powermanagement #batterycharger

1.5A USB-Friendly Li-Ion Battery Charger and Power-Path Management IC with 4.2 VBAT The BQ24075TRGTR (from Texas Instruments) is a highly integrated single-cell Li-Ion / Li-Polymer linear battery charger IC with power-path management. It is designed for portable and space-constrained applications, allowing a device to be powered from a USB port or AC adapter while simultaneously charging the battery. The device integrates charging control, power-path management, and safety features into a compact package. A key feature is its Dynamic Power Path Management (DPPM), which ensures the system is powered even when the battery is low or absent, while intelligently managing charging current. Key Features Battery Charging Supports single-cell Li-Ion / Li-Polymer batteries Up to 1.5 A programmable charge current Three-phase charging: Pre-charge (conditioning) Constant current Constant voltage Fixed 4.2 V charge voltage Power Path Management Dynamic Power Path Management (DPPM): Powers system and charges battery simultaneously Prioritizes system load over charging Allows system operation even with: Deeply discharged battery No battery connected Input & Power Features Operates from: USB input (100 mA / 500 mA selectable) AC adapter Programmable input current limit up to 1.5 A Input voltage range: ~4.35 V to 6.4 V (28 V max rating) Input dynamic power management (VIN-DPM) prevents source overload Protection & Safety Thermal regulation and shutdown Over-voltage protection (OVP) Short-circuit and reverse current protection Battery temperature monitoring (NTC thermistor input) Battery disconnect (SYSOFF) feature Control & Status Standalone operation (no MCU required, resistor-programmable) Charge status outputs: Charging Charge complete Power good Physical Characteristics Package: 16-pin VQFN (3 mm × 3 mm) Operating temperature: –40°C to +85°C #commonpartslibrary #integratedcircuit #powermanagement #batterycharger

USB Controller USB 2.0 I2C Interface 24-QFN (4x4) The STUSB4500QTR is a standalone USB Type-C Power Delivery (PD) controller from STMicroelectronics designed for power sink applications (devices that receive power, like chargers, IoT devices, or battery-powered systems). It enables automatic negotiation of USB Power Delivery contracts (up to 100 W: 20 V / 5 A) without requiring an external microcontroller, thanks to its built-in auto-run algorithm. Power profiles (PDOs) can be pre-configured and stored in internal non-volatile memory, simplifying system design and reducing component count. The device is optimized for modern USB-C designs, offering robust protection, high-voltage tolerance, and support for operation even from a dead battery state. Key Features Power Delivery & Control Standalone USB Type-C™ and USB PD sink controller Supports up to 100 W (20 V, 5 A) power negotiation Auto-run mode (no MCU required) for PD negotiation Up to 3 configurable sink PDO profiles stored in NVM Power Management Dead battery mode support (can start with no battery power) Dual power supply inputs: V_SYS: 3.0 V – 5.5 V V_DD: 4.1 V – 22 V Integrated VBUS monitoring and control Integrated Functions Built-in VBUS switch gate drivers (PMOS) Internal/external VBUS discharge paths I²C interface for configuration and monitoring Protection & Reliability Short-to-VBUS protection on CC pins (up to 22 V) High-voltage tolerance: Up to 28 V on VBUS pins ESD protection: 3 kV HBM / 1.5 kV CDM Physical & Environmental Package: QFN-24 (4×4 mm) Operating temperature: –40°C to +105°C Industrial-grade reliability Compliance & Compatibility Certified for: USB Type-C Rev 1.2 USB PD Rev 2.0 Interoperable with USB PD 3.0 #commonpartslibrary #integratedcircuit #usbcontroller

OR Controller N+1 ORing Controller N-Channel 1:1 TSOT-23-8 The LM74700QDDFRQ1 is an automotive-qualified ideal diode controller designed to provide reverse polarity protection, reverse current blocking, and input power path management in low-voltage DC power systems. The device controls an external N-channel MOSFET to emulate an ideal diode with very low forward voltage drop and reduced power dissipation compared to conventional Schottky diodes. It is optimized for automotive and industrial applications requiring robust protection against negative supply voltages, load dump conditions, and reverse battery events. The controller supports wide input voltage operation and integrates fast response circuitry for fault handling and transient protection. The device is suitable for power OR-ing, hot-swap, redundant power supply systems, and battery-connected applications where efficiency, reliability, and thermal performance are critical. Engineering Specification Device Type Automotive ideal diode controller with reverse battery and reverse current protection Qualification Standard AEC-Q100 qualified for automotive applications Control Topology External N-channel MOSFET controller for ideal diode operation Input Voltage Range Supports wide automotive and industrial supply voltage ranges Reverse Polarity Protection Provides protection against negative input voltage conditions and reverse battery connection Reverse Current Blocking Actively prevents reverse current flow during output-to-input fault conditions Forward Voltage Drop Low conduction losses through external MOSFET control for high-efficiency power delivery Transient Protection Capable of handling automotive transient events including load dump conditions Gate Drive Control Integrated gate driver optimized for fast MOSFET switching and protection response Power Path Management Supports power OR-ing and redundant supply architectures Fault Response Fast turn-off during reverse current and fault events Current Consumption Low operating quiescent current suitable for always-on systems Thermal Performance Designed for efficient thermal operation with external MOSFET-based power dissipation Operating Temperature Range Automotive-grade extended temperature operation Package Type Small-outline automotive package suitable for compact PCB layouts #commonpartsLibrary #integratedcircuit #powermanagement #orcontroller

Charger IC Lithium Ion/Polymer 29-VQFN-HR (4x4) The BQ25792 is a switch-mode synchronous buck-boost charger with full power-path management. It can automatically regulate power flow between the input source, system load, and battery. It supports a wide input range and is designed for USB Type-C™ / USB Power Delivery (USB-PD) systems, enabling both charging and OTG (power output from battery) operation. ⭐ Key Features ⚡ High-performance charging Up to 5 A charge current Supports 1S to 4S battery packs High efficiency (up to ~96% under typical conditions) Programmable switching frequency: 750 kHz or 1.5 MHz 🔋 Wide input support Input voltage range: 3.6 V to 24 V Absolute max rating up to 30 V Supports USB adapters and barrel jack sources Detects USB charging standards (BC1.2, DCP, CDP, HVDCP, etc.) 🔄 Buck-boost power conversion Seamless buck, boost, and buck-boost operation Maintains stable system voltage even when battery is low or input varies 🔌 USB-PD / OTG support USB Power Delivery (PD 3.0 compatible) Supports OTG output (battery powers USB port) OTG voltage range: 2.8 V to 22 V 🧠 Intelligent power management NVDC power path management (system can run without battery) Dual-input power mux controller (select between two power sources) Battery supplement mode (prevents input overload) 📊 Monitoring & control Integrated 16-bit ADC for voltage, current, temperature monitoring Fully I²C configurable Autonomous or host-controlled operation 🛡️ Protection & safety Input and battery over-voltage/over-current protection Thermal regulation and shutdown Charging safety timer MOSFET protection (internal switching FETs included) 📦 Package 29-pin VQFN (4 mm × 4 mm) package Industrial temperature range: -40°C to 85°C #CommonPartsLibrary #IntegratedCircuit #PowerManagement #Battery-charger

OR Controller P-Channel 1:1 SC-70-6 The LM66100DCKR is an ideal diode and power path management device manufactured by Texas Instruments. This integrated circuit is designed to provide low-loss reverse polarity protection and automatic power path control for low-voltage DC power systems. By utilizing an integrated low-resistance MOSFET architecture, the device significantly reduces forward voltage drop and power dissipation compared to conventional Schottky diodes. The device supports automatic source selection, reverse current blocking, and efficient power OR-ing functionality, making it suitable for battery-powered devices, USB-powered electronics, industrial embedded systems, portable equipment, and redundant power supply architectures. Its ultra-low forward voltage characteristics improve overall system efficiency and help extend battery operating life in portable applications. The LM66100DCKR is optimized for compact embedded designs requiring efficient power routing, input protection, and seamless power source switching while minimizing thermal losses and PCB footprint requirements. Engineering Specification Device Type Ideal diode and power path protection IC Power Management Function Reverse current blocking and automatic power path control Switching Technology Integrated low-resistance MOSFET architecture Reverse Protection Reverse polarity and reverse current protection Forward Voltage Characteristics Ultra-low forward voltage drop for high-efficiency operation Power Path Features Automatic source selection and power OR-ing support Efficiency Characteristics Reduced conduction loss compared to conventional diode solutions Input Characteristics Designed for low-voltage DC power rail operation Thermal Characteristics Low thermal dissipation due to efficient MOSFET conduction Protection Features Reverse current blocking Reverse polarity protection Power path isolation Fault-tolerant operation Package Type SC70 surface-mount package Mounting Style Surface mount technology Applications Battery-powered electronics USB-powered systems Power multiplexing Portable devices Embedded systems Industrial electronics Redundant power supplies Power OR-ing circuits IoT hardware Low-power electronic systems Manufacturer Texas Instruments #commonpartslibrary #idealdiode #powermanagement #reversepolarityprotection #powerpathcontroller #texasinstruments #powerelectronics #embeddedhardware #portableelectronics #surfaceountcomponents #electronicsdesign #powersupply #usbpower #batterypowered #industrialelectronics

Power Switch/Driver 1:1 P-Channel 2A SOT-23-5 The GLF1100 is an ultra-efficiency, 2 A rated, Load Switch with integrated slew rate control. The best in class efficiency makes it an ideal chose for use in IoT, mobile, and wearable electronics. The GLF1100 features ultra-efficient IQSmartTM technology that supports the lowest quiescent current (IQ) and shutdown current (ISD) in the industry. Low IQ and ISD solutions help designers to reduce parasitic leakage current, improve system efficiency, and increase battery lifetime. The GLF1100 integrated slew rate control can also enhance system reliability by mitigating bus voltage swings during switching events. Where uncontrolled switches can generate high inrush currents that result in voltage droop and/or bus reset events, the GLF slew rate control specifically limits inrush currents during turn-on to minimize voltage droop. GLF1100 Load Switch devices support an industry leading wide input voltage range and helps to improve operating life and system robustness. Furthermore, one device can be used in multiple voltage rail applications which helps to simplify inventory management and reduce operating cost. FEATURES • Wide Input Range: 1.1 V to 5.5 V 6 V abs max • RON : 82 mΩ Typ @ 5.5 VIN • IOUT Max: 2 A • Ultra-Low IQ: 10 nA Typ @ 5.5 VIN • Ultra-Low ISD: 25 nA Typ @ 5.5 VIN • Controlled Rise Time: 2.2 ms at 3.3 VIN • Internal EN Pull-Down Resistor • Integrated Output Discharge Switch • Wide Operating Temperature Range: -40 °C ~ 85 °C • HBM: 6 kV, CDM: 2 kV APPLICATIONS • Telecommunication Module • Low Power Subsystem • Mobile Devices #commonpartslibrary #integratedcircuit #powermanagement #LoadSwitch #PowerManagement #PMIC #HighSideSwitch #LowPower #BatteryPowered #PortableElectronics #GLFIntegratedPower #SOT23 #PowerDistribution

N-Channel 100 V 171A (Tc) 188W (Tc) Surface Mount PG-WSON-8-2 The BSC030N10NS5SCATMA1 specification defines the engineering requirements for an N-channel power MOSFET designed for high-efficiency switching and power management applications. This specification establishes the functional, electrical, mechanical, thermal, environmental, and quality requirements necessary to ensure reliable switching performance, low conduction losses, and long-term operational stability in power electronic systems. The device is intended for use in DC-DC converters, synchronous rectification circuits, motor control systems, battery management systems, power distribution modules, and industrial electronic equipment. It provides low on-state resistance, fast switching characteristics, and efficient power handling, making it suitable for high-frequency and high-current applications requiring optimized efficiency and thermal performance. Engineering Requirements The power MOSFET shall be manufactured using advanced semiconductor fabrication processes and qualified materials to ensure consistent electrical characteristics, high switching efficiency, and reliable long-term operation. The device shall maintain stable performance under specified voltage, current, and environmental operating conditions. Electrical characteristics shall provide low on-state resistance, high current-carrying capability, low gate charge, and fast switching performance to minimize conduction and switching losses. The device shall maintain stable operation during repetitive switching cycles, transient load conditions, and dynamic power management applications. Thermal performance shall support efficient heat dissipation through the package structure and printed circuit board interface. The component shall maintain electrical integrity and operational reliability within the specified junction temperature range during continuous and intermittent high-power operation. Mechanical construction shall be suitable for automated surface-mount assembly and compatible with standard solder reflow manufacturing processes. The package shall withstand vibration, thermal cycling, mechanical handling, and environmental exposure without degradation of electrical or mechanical performance. Workmanship shall be free from defects including contamination, cracks, bond failures, package deformation, or structural inconsistencies. Inspection, validation, and testing shall be conducted using calibrated equipment and controlled quality procedures to verify compliance with all applicable engineering and manufacturing requirements. Any deviation from this specification shall require formal engineering evaluation, documented technical justification, and approval through the established engineering change control process. Documentation Supporting documentation shall include engineering drawings, electrical performance specifications, thermal characterization reports, qualification records, inspection reports, material declarations, reliability data, and revision-controlled manufacturing documentation. All documentation shall be maintained under formal configuration management and quality assurance systems to ensure complete product traceability. Revision Control Any modification to this specification shall be managed through the formal engineering change management process. All revisions shall undergo technical review, validation, and approval before implementation to ensure continued compliance with design intent and applicable engineering standards. #EngineeringSpecification #PowerMOSFET #NChannelMOSFET #PowerElectronics #PowerManagement #MotorControl #DCDCConverter #Semiconductor #QualityAssurance #EngineeringDocumentation #commonpartslibrary #transistor #mosfet

1 mOhms ±1% 4W Chip Resistor Nonstandard Automotive AEC-Q200, Current Sense Metal Element Bourns Inc. CSS4J-4026R-1L00F is a high-power surface-mount current sense resistor designed for accurate current measurement in power electronics applications. It belongs to the CSS4J-4026 series and uses a metal element construction that provides low resistance, high power handling, and excellent stability for automotive and industrial applications. This device features a 1 mΩ resistance value, ±1% tolerance, and 4 W power rating, making it suitable for monitoring high-current paths while minimizing measurement losses. It is also qualified for AEC-Q200 automotive applications and operates across a wide temperature range. Key Features Component Type: SMD Current Sense Resistor (Metal Element / Metal Strip) Resistance Value: 1 mΩ (0.001 Ω) Resistance Tolerance: ±1% Power Rating: 4 W Package Size: 4026 (approx. 10.06 mm × 6.60 mm) Number of Terminals: 4 terminals (Kelvin sensing configuration) Temperature Coefficient: approximately ±75 ppm/°C Operating Temperature Range: −55°C to +170°C Construction: Metal element current shunt resistor for accurate current measurement Qualification: Automotive AEC-Q200 compliant Typical Applications Battery Management Systems (BMS) EV and automotive power systems Motor control circuits Power supplies and DC/DC converters Overcurrent monitoring and protection circuits Industrial power monitoring equipment #CommonPartsLibrary #Bourns #CSS4J4026 #CurrentSenseResistor #ShuntResistor #MetalElementResistor #AECQ200 #PowerElectronics #BatteryManagementSystem #EVElectronics #SMTComponents #PCBDesign