Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3.5A SOT-23-6 Thin, TSOT-23-6 The LMR51635YFDDCR specification defines the engineering requirements for a synchronous step-down DC-DC converter integrated circuit designed for high-efficiency power regulation in embedded and industrial electronic systems. This specification establishes the functional, electrical, mechanical, thermal, environmental, and quality requirements necessary to ensure stable voltage conversion, efficient power management, and long-term operational reliability. The device is intended for use in industrial automation, telecommunications equipment, consumer electronics, test and measurement instruments, distributed power systems, and embedded applications requiring regulated low-voltage power rails from higher-voltage DC sources. It integrates high-performance switching circuitry to provide efficient voltage conversion while minimizing external component count and overall system power loss. Engineering Requirements The DC-DC converter shall be manufactured using qualified semiconductor fabrication processes and high-quality materials to ensure consistent electrical performance, low power consumption, and reliable long-term operation. The device shall maintain stable functionality under specified input voltage, output load, temperature, and environmental operating conditions. Electrical characteristics shall provide accurate output voltage regulation, high conversion efficiency, low output ripple, and fast transient response during load and input voltage variations. The converter shall maintain stable switching operation while supporting continuous and dynamic power delivery with minimal performance degradation. The integrated control architecture shall ensure reliable startup, controlled shutdown, and stable operation under varying load conditions. Built-in protection mechanisms shall support safe operation during abnormal conditions, including overload, overcurrent, thermal stress, and short-circuit events, thereby enhancing overall system reliability. Thermal performance shall support continuous operation within the specified junction temperature range while maintaining electrical integrity and long-term reliability. The package shall be suitable for automated surface-mount assembly and compatible with standard solder reflow manufacturing processes. Mechanical construction shall withstand thermal cycling, vibration, mechanical handling, and environmental exposure without degradation of electrical or mechanical performance. Workmanship shall be free from defects including contamination, package cracking, bond failures, lead deformation, or structural inconsistencies that could adversely affect device functionality or reliability. Inspection, validation, and testing shall be conducted using calibrated equipment and controlled quality procedures to verify compliance with 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 before implementation. Documentation Supporting documentation shall include engineering drawings, electrical performance specifications, application guidelines, thermal characterization reports, qualification records, inspection reports, reliability data, material declarations, 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 release to ensure continued compliance with design intent and applicable engineering standards. #EngineeringSpecification #DCDCConverter #BuckConverter #PowerManagement #PowerElectronics #EmbeddedSystems #IndustrialElectronics #VoltageRegulator #QualityAssurance #EngineeringDocumentation

Buck Regulator Positive Output Step-Down DC-DC Controller IC 40-VQFN (6x6) #CommonPartsLibrary #IntegratedCircuit #PowerManagement #DCDC-Switching controller #LM5143

PMIC - Voltage Regulators - Linear Switching 1.5V to 9V 2 Output Step-Down Buck LDO 1MHz 16-QFN #CommonPartsLibrary #IntegratedCircuit #PowerManagement #LinearRegulator #VoltageRegulator

Battery Power Management IC Lithium Ion/Polymer 24-QFN (4x4) nPM1100 is an integrated Power Management IC (PMIC) with a linear-mode lithium-ion/lithium-polymer battery charger in a compact 2.1x2.1 mm WLCSP package. It has a highly efficient, dual-mode configurable output DC/DC buck regulator. nPM1100 is an extremely compact PMIC device, created for space constrained applications with a small lithium-ion or lithium-polymer battery. It is compatible with all nRF52 and nRF53 Series SoCs and supports charging batteries at up to 500 mA through USB, and also delivers up to 150 mA of current to power external components with regulated voltage. A minimum of five passive components are required for operation and the device functions without a control interface. It is the perfect companion for nRF52 and nRF53 multiprotocol SoCs in battery powered designs. Low quiescent current (IQ) extends battery life during shipping and storage with Ship mode, or in operation using auto-controlled hysteretic buck mode for high efficiency down to 1 µA loads. Charge and error indication LED drivers are built in. Charge profile limits are configurable and VBUS current limits can be fixed or auto-controlled with on-chip USB port detection. • 400 mA linear battery charger • Linear charger for lithium-ion/lithium-polymer batteries • Adjustable charge current from 20 mA to 400 mA • Selectable termination voltage of 4.1 V or 4.2 V • Automatic trickle, constant current, and constant voltage charging • Battery thermal protection • Discharge current limitation • JEITA compliant • Li-ion/Li-polymer USB battery charger with a high efficiency buck regulator • 800 nA - Typical quiescent current • 460 nA - Shipping mode quiescent current • Thermal protection • Input regulator • USB compatible current limit of 100 mA and 500 mA • 4.1 V to 6.7 V input voltage range for normal operation • 20 V overvoltage protection • Reverse current protection • 3.0 V to 5.5 V system voltage output • USB port detection supporting the following types: • SDP • CDP/DCP • 1.8 V to 3.0 V, 150 mA step-down buck regulator • Step-down buck regulator with up to 92% efficiency • Automatic transition between hysteretic and pulse width modulation (PWM) modes • Forced PWM mode for clean power operation • Pin-selectable output voltage (1.8 V, 2.1 V, 2.7 V, 3.0 V) • Soft start-up • LED drivers for charger state indication • 5 mA low side LED driver for charging indication • 5 mA low side LED driver for error indication • 2.3 V to 4.35 V battery operating input range • 2.1x2.1 mm WLCSP package • Suitable for two layer PCB design #CommonPartsLibrary #IntegratedCircuit #NordicSemiconductor #nPM1100 #PMIC #BatteryCharger #PowerManagement #LiIon #LiPolymer #BuckConverter #Wearables #IoT #WirelessSensor #LowPowerDesign #USBCharging #EmbeddedSystems #nRF52 #nRF53 #PortableElectronics

Buck Regulator Positive Output Step-Down I2C, PMBus, SMBus DC-DC Controller IC 24-QFN (4x4) #CommonPartsLibrary #IntegratedCircuit #PowerManagement #switching-controller #DC-DC

Buck Regulator Positive Output Step-Down DC-DC Controller IC PG-SSOP-14-EP #commonpartslibrary #integratedcircuit #powermanagement #dcdcswitching

LED Driver IC 1 Output DC DC Controller Step-Down (Buck) Analog, PWM Dimming - 8-SOIC #CommonPartsLibrary #IntegratedCircuit #PowerManagement #LEDdriver