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MIC2005A-1YM6-TR - 500mA High-Side P-Channel Power Switch | Microchip
The Microchip Technology MIC2005A-1YM6-TR is a single-channel, current-limiting, high-side P-channel MOSFET power distribution switch rated for 500 mA continuous load current, housed in a 6-pin SOT-23 package. It accepts input voltages from 2.5 V to 5.5 V and provides a fixed 500 mA current limit with an active-high enable input for power sequencing and load control. A high-side power switch is an integrated load-switch IC that sits between a power rail and the downstream load, replacing a discrete P-channel MOSFET plus current-sense resistor plus control circuitry with a single component. It belongs to the broader power-management IC hierarchy: power switch -> load switch -> power distribution switch -> power management IC. High-side switches offer reverse-current blocking and ground-referenced load control, simplifying USB port power, hot-plug rails, and battery protection circuits. Key features include 500 mA fixed current limit, low quiescent current, fault flag output for overcurrent reporting, thermal shutdown protection, and undervoltage lockout. The internal P-channel MOSFET provides low on-resistance to minimize voltage drop and conduction loss, while internal slew-rate control limits inrush current during turn-on. The active-high enable pin allows logic-level control from a microcontroller GPIO. Architecturally, the MIC2005A integrates a P-channel pass FET, a current-sense comparator, a fault timer with blanking, and a thermal shutdown block on a single CMOS die. The fault blanking circuit prevents nuisance tripping from load transients, while the thermal shutdown latches off the FET when junction temperature exceeds safe limits. The device is offered in a 6-pin SOT-23 package that occupies approximately 9 mm² of board area, making it suitable for space-constrained portable designs. Typical applications include USB port power distribution, hot-swap peripherals, set-top boxes, digital televisions, printers, notebook PCs, and PDA accessories. The 500 mA current limit aligns with USB 2.0 downstream port requirements, making this part particularly attractive for legacy USB power-switching functions. When designing with this device, place the input bypass capacitor as close as possible to the VIN pin and ensure the output capacitor does not exceed the datasheet maximum to prevent false fault triggering. The fault output is open-drain and requires a pull-up resistor. This page synthesizes distributor pricing, drop-in alternatives drawn from the Microchip MIC20XX family, and practical design notes that complement the manufacturer datasheet.
MIC2005A-2YM6-TR - 500mA High-Side USB Power Switch SOT-23-6 | Microchip
The Microchip MIC2005A-2YM6-TR is a 500 mA current-limited, high-side P-channel MOSFET power distribution switch housed in a 6-pin SOT-23-6 surface-mount package, designed for self-powered and bus-powered USB applications and general 5 V power switching. A USB high-side power switch is a type of load switch that sits between a system power rail (typically 5 V) and a downstream USB port or peripheral. Its role is to turn the rail on or off under logic control, present a defined upstream current to the host, and protect both the host and the device from over-current, short-circuit, and inrush events. The MIC20XX family sits within the broader power management IC hierarchy of load switches -> power distribution switches -> USB switches -> power management ICs, complementing LDOs and DC-DC converters on the power tree. Key features include a fixed 500 mA current limit, a 2.5 V to 5.5 V input operating range, low quiescent current, integrated soft-start to control inrush current, an active-high enable input, fault-flag output for over-current and thermal events, under-voltage lockout, and thermal shutdown. Typical on-resistance is approximately 70 mΩ at 5 V, providing low dropout and minimal power dissipation in normal operation. The device requires no external MOSFET, sense resistor, or current-setting network. The MIC2005A-2YM6-TR is the -2 active-high enable variant of the family and ships on tape-and-reel for high-volume assembly. Its small SOT-23-6 footprint, integrated protection, and minimal external BOM make it well suited to compact, cost-sensitive 5 V rails such as USB ports, HDMI ports, and downstream power connectors on consumer and computing platforms. Typical applications include USB 2.0 downstream ports on PCs and laptops, HDMI link power switching, set-top boxes, printers, digital televisions, and any port that needs self-powered or bus-powered current limiting. Pair the MIC2005A-2YM6-TR with an upstream 5 V LDO or buck regulator and follow the datasheet bulk-capacitor guidance to remain USB 2.0 compliant under load steps. When designing with this device, place the input and output bulk capacitors as close as possible to the IC and observe the datasheet derating curve for short-circuit and over-current behavior. Thermal layout is straightforward because typical load currents are 500 mA or less, but continuous fault conditions must be considered. This page combines verified distributor pricing, drop-in alternatives from the same MIC20XX family and competing vendors, and practical PCB design notes not bundled in the manufacturer datasheet, giving a faster engineering decision path than scanning individual distributor listings.
MIC2026-2YM - Dual USB High-Side Power Switch 1.25A 8-SOIC
The Microchip Technology MIC2026-2YM is a dual-channel, high-side N-channel MOSFET power distribution switch rated for 1.25A continuous load current per channel in an 8-pin SOIC package. It operates from a 2.7V to 5.5V input rail and integrates current limiting and thermal shutdown to protect the load and the upstream supply. The MIC2026-2YM variant uses an active-low enable input, which is the inverse-polarity control used by the MIC2026 family. A high-side power switch (also called a load switch or power distribution switch) sits between the system rail and a downstream load (USB port, fan, LED string, peripheral). It replaces a discrete P-MOSFET plus fuse/reset circuit by combining an N-channel MOSFET with a charge pump, current-limit comparator, and thermal protection in a single IC. High-side switches sit on the positive rail, so they cut return-path current cleanly and are preferred for hot-plug safety, inrush limiting, and per-port power budgeting. Key features of the MIC2026-2YM include 1.25A continuous output current per channel, internal current limiting, soft-start to suppress inrush transients, and an over-temperature latch that removes the output until the fault clears. The device also provides a fault flag output for system monitoring and ground-loop-tolerant switching. Together these features support USB 2.0 downstream ports, hot-swap bays, and any general-purpose 5V load that benefits from circuit-breaker-style protection. The MIC2026-2YM is internally current limited and thermally protected, and it integrates two switches in one SOIC-8, halving the board area versus two single-channel MIC2025-class parts. The dual-channel topology is also ideal for paired loads such as dual USB ports or two peripheral rails that must power up or fault together. Typical applications are dual USB power distribution, hot-swap 5V cards, and protected fan/LED rails in desktops, docking stations, and embedded computing platforms. The wide 2.7V to 5.5V input range maps directly onto the standard 3.3V and 5V system rails used in these systems. When laying out the MIC2026-2YM, keep input and output capacitors within 2 mm of their respective pins to suppress the inrush spike, and stitch a continuous ground plane under the exposed pad area to spread heat. The fault pin can be left floating if not used, but routing it to a GPIO is recommended for proper diagnostics. This page synthesizes distributor pricing, drop-in alternatives, and application-level design notes that are not aggregated in the manufacturer datasheet.
MIC2091-1YM5-TR - 100mA High-Side Power Switch | Microchip
The Microchip Technology MIC2091-1YM5-TR is a 100 mA high-side P-channel MOSFET power distribution switch in a 5-pin SOT-23-5 package, optimized for general-purpose low-power distribution in circuits requiring accurate over-current limiting and circuit protection. The device operates from a 1.8 V to 5.5 V input rail, includes a 1300 mOhm typical on-resistance, and integrates thermal shutdown at 150 °C and undervoltage lockout with 100 mV hysteresis for robust fault handling. A high-side power switch is a load-management building block that sits between a system supply rail and a downstream load, providing controlled turn-on, current limiting, and fault isolation. Within the broader power-management taxonomy, it sits between simple load switches and full hot-swap controllers, offering a middle ground for USB ports, portable devices, and other sub-500 mA distribution rails. The MIC2091-1YM5-TR belongs to the auto-retry current-limit family (the MIC2091-2 variant latches off), and includes a dedicated active-high fault output. Key features include a 1.8 V to 5.5 V operating input range, factory-trimmed 100 mA current limit, active-high logic enable, open-drain fault flag with 10 ms deglitch filter to suppress false trip events, and a junction operating temperature range of -40 °C to +125 °C. The 5-pin SOT-23 footprint occupies just 2.9 mm x 1.6 mm, freeing board area for dense portable designs. According to the Microchip datasheet DS20006611A, the on-resistance rises with temperature and the part includes built-in soft-start to limit inrush current on hot-plug events. Technically the device integrates a charge pump that drives the P-channel gate above VIN for true rail-to-rail load control, while the current-limit loop monitors a sense-FET and modulates gate drive to regulate load current at the programmed limit. The result is predictable behavior across temperature and supply, and clean recovery from momentary overloads without latch-up that would require a power cycle. Typical applications include USB 2.0 downstream port power switching, self-powered and bus-powered USB hubs, notebook and tablet accessory rails, and protection of camera modules, thermal print heads, and other peripheral loads. When designing with this part, place a 1 µF or greater ceramic bypass capacitor on VIN and keep the trace from the device ground pin short and direct to the system ground plane to ensure clean current-limit operation.
MIC2103YML - 75V 15A Adaptive On-Time Buck Controller | Microchip
The Microchip Technology MIC2103YML is a 75 V, constant-frequency synchronous buck controller using adaptive on-time control, with a 4.5 V to 75 V input range and support for output currents up to 15 A. It is supplied in a 16-pin VQFN 3x3 mm package and provides one PWM switching output. A programmable switching range of 200 kHz to 600 kHz supports conversion from high-voltage industrial, telecom, and automotive-style buses to lower-voltage processor, networking, and test-equipment rails. A synchronous buck controller is a pulse-width-modulation controller for a step-down DC-DC converter. It drives a high-side switching MOSFET and a low-side synchronous rectifier rather than dissipating conversion energy in a linear element. The controller supplies gate-drive and timing functions, while external MOSFETs, inductors, capacitors, and feedback components determine practical power capability and loop performance. In the system hierarchy, the MIC2103 belongs to DC-DC converters, switching regulators, power-management ICs, and semiconductors. Key verified characteristics include a 75 V maximum supply, a 4.5 V minimum operating input, adjustable output down to 0.8 V, guaranteed output accuracy of ±1%, constant-frequency operation, adaptive on-time control, and a 200 kHz to 600 kHz programmable switching range. Hyper Light Load operation is identified by distributors and evaluation-board documentation. The controller supports up to 15 A output-current capability when paired with appropriately rated external power components; the IC itself does not carry 15 A continuously. The adaptive on-time architecture adapts high-side conduction time to operating conditions while retaining constant-frequency behavior. This architecture targets efficient conversion across a wide input range and reduces reliance on a fixed compensation approach. The controller is particularly relevant where a 48 V or higher bus must be reduced efficiently and where converter size, transition behavior, and external power-stage selection are central engineering constraints. Typical applications include telecom and networking power supplies, industrial 24 V or 48 V rails, server and data-center auxiliary supplies, instrumentation, and distributed power systems. The 75 V input rating provides design margin above common nominal 48 V buses, while the exposed thermal pad and compact 3x3 mm footprint support dense power-converter layouts. Design starts with selecting external MOSFETs whose voltage ratings, gate charges, and losses support the target rail and switching frequency. Follow the manufacturer datasheet for compensation, bootstrap components, gate-drive settings, current-limit implementation, and exposed-pad layout. Estimated converter dissipation must be calculated from actual MOSFET, inductor, and controller losses because the verified data does not provide a complete thermal-resistance table. This product page consolidates verified specifications, sourcing information, application guidance, and replacement limitations. No verified pin-compatible substitutes were established from the supplied cross-reference results, so the page avoids presenting unverified drop-in claims and distinguishes controller-only specifications from the external converter design.
MIC2103YML-TR - 75V Sync Buck Controller, Adaptive On-Time | Microchip
The Microchip MIC2103YML-TR is a 75V synchronous buck DC-DC controller featuring adaptive on-time control architecture, housed in a 16-pin VQFN (3x3 mm) package with an exposed pad. The device operates over an input supply range of 4.5V to 75V and supports output currents up to 15A when paired with external MOSFETs, with output voltage adjustable down to 0.8V at ±1% accuracy. A synchronous buck controller is a type of DC-DC switching converter that uses two MOSFETs (one high-side, one low-side) in a half-bridge topology to step down a higher input voltage to a lower regulated output voltage. Unlike an LDO (low-dropout linear regulator) that dissipates excess voltage as heat, a synchronous buck controller switches the MOSFETs at high frequency (typically 200kHz to 600kHz here) and uses an LC output filter to deliver a regulated rail with high efficiency - typically 90-95% - even at large input-to-output headroom. Within the broader hierarchy, MIC2103YML-TR sits as: buck controller -> DC-DC switching converter -> power management IC -> semiconductor. Its adaptive on-time control is a variant of voltage-mode hysteretic control that adjusts the on-pulse width in response to input/output voltage, eliminating the need for external loop compensation components. Key features include a 4.5V to 75V input voltage range (ideal for 12V, 24V, and 48V industrial buses), 200kHz to 600kHz programmable switching frequency, Hyper Light Load (HLL) operation for high efficiency at light loads, internal MOSFET drivers, programmable current limit, and ±1% output voltage accuracy. The 16-pin VQFN (3x3 mm) exposed-pad package reduces board space and provides a low thermal resistance path. Built-in protection includes input under-voltage lockout (UVLO), over-current protection (OCP), and thermal shutdown. The adaptive on-time architecture responds to line and load transients within one switching cycle without requiring compensation network tuning, simplifying design-in versus traditional peak current-mode controllers. HLL mode automatically transitions to a discontinuous conduction mode at light loads, preserving efficiency when the system is idling - critical for battery-powered and energy-harvesting applications. Typical applications include 24V industrial automation bus converters, 48V telecom point-of-load stages, automotive 12V battery accessory rails, battery-powered portable equipment, distributed power systems, and point-of-load regulation downstream of an isolated AC-DC or PFC stage. When designing with MIC2103YML-TR, choose external MOSFETs rated for the application's load current and drain-source voltage. A 2.2uH to 10uH inductor, 100nF bootstrap capacitor, and output ceramic capacitors are typical BOM components. Place the feedback resistors close to the FB pin to minimize noise pickup. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes - including adaptive on-time trade-offs and HLL efficiency curves - that are not consolidated on the manufacturer product page.
MIC2250YML-TR - 2A Low-EMI Boost Regulator | Microchip
The Microchip Technology MIC2250YML-TR is a general-purpose 2A boost (step-up) DC/DC switching regulator IC with integrated low-EMI dithering circuitry and an adjustable output voltage starting at 1.24V. It is housed in an 8-pin 2 mm x 2 mm MLF/VFDFN exposed-pad package and is supplied on tape-and-reel (TR) packaging for high-volume manufacturing. The part is optimized for noise-sensitive, hand-held, battery-powered applications where high efficiency across a wide load range is critical. A boost (step-up) DC/DC converter is a switching power supply topology that produces an output voltage higher than its input voltage. It is a member of the switching regulator family, itself a sub-category of power management ICs that convert one DC voltage level to another using energy storage (inductors and capacitors) and switching elements (MOSFETs). Boost regulators are widely used to derive system rails (e.g., 5V, 15V, or LED forward voltages) from a lower battery or bus voltage (e.g., Li-ion 3.7V, USB 5V, or 12V intermediate bus). Key features of the MIC2250YML-TR include a 2A internal switch rating, low EMI via dithered switching frequency to spread spectral energy, 1.2A continuous output current capability, high light-load efficiency, and a wide input voltage range suitable for single-cell Li-ion applications. The 8-MLF exposed pad provides a low thermal resistance path, enabling compact PCB layouts without external heatsinking. Architecturally, the MIC2250 uses a current-mode control loop with internal MOSFET and an external inductor/capacitor output filter. The dithering feature modulates the oscillator frequency to soften EMI peaks, simplifying EMC compliance for hand-held consumer and industrial products. Typical applications include OLED/LCD bias supplies, white-LED camera flash drivers, USB-powered boost rails, audio accessory power, and industrial sensor excitation. The 2A switch makes it well suited to loads up to 500 mA continuous from a single Li-ion cell. When designing with this device, choose an inductor with low DCR and a saturation rating of at least 3A to prevent saturation at peak switch current. Place the input/output ceramic capacitors as close as possible to the IC and use a ground plane under the exposed pad for thermal dissipation.
MIC23150-GYMT-TR - 4MHz 2A Sync Buck Regulator 1.8V | Microchip
The Microchip Technology MIC23150-GYMT-TR is a 4MHz 2A HyperLight Load synchronous buck (step-down) switching regulator with a fixed 1.8V output, 2.7V to 5.5V input range, and 23uA quiescent current, housed in an 8-pin 2x2 mm TDFN (thin MLF-8) package less than 1mm tall. A synchronous buck regulator is a type of DC-DC switching converter that steps a higher input voltage down to a lower output voltage using a high-side and a low-side (synchronous rectifier) MOSFET integrated on the die, replacing the external Schottky diode of a conventional buck converter to improve efficiency. Within the power management hierarchy - power management IC, switching regulator, buck converter - the MIC23150 targets battery-powered and space-constrained point-of-load applications. Key differentiating features include the proprietary HyperLight Load mode, which combines 4MHz PWM operation in continuous conduction with ultra-fast transient response and very high light-load efficiency; peak efficiency of 93% in continuous conduction mode; and support for a very small 0.47uH inductor with an output capacitor as small as 2.2uF, enabling a complete solution under 1mm height. The 4MHz switching frequency moves noise far above sensitive RF and audio bands and shrinks the magnetics to tiny chip inductors. Architecturally, the device integrates both power MOSFETs, the 4MHz oscillator, and the HyperLight Load control loop, which automatically transitions between PWM and ultra-light-load operation to keep output ripple very low across the entire load range. This makes it well suited to powering processor core rails that swing from sleep-level microamp loads to full 2A bursts with minimal droop. Typical applications include supplying processor and SoC core voltages, point-of-load rails in portable and battery-powered devices, RF module power supplies in cellular and IoT terminals, and embedded power management in space-limited industrial designs. The 2.7V-5.5V input range directly accepts single-cell Li-ion batteries and 5V rails. Design consideration: at 4MHz, layout discipline is critical - keep the input capacitor, inductor, and SW node loop as small as possible, and select a low-DCR 0.47uH inductor rated above 2A to preserve efficiency and transient performance. This page synthesizes distributor pricing, verified drop-in alternative data, and practical design guidance not found in the manufacturer datasheet alone.
MIC23201YML - 2A 2MHz Sync Buck Regulator w/ HSC | Microchip
The Microchip MIC23201YML is a high-efficiency 2 MHz synchronous buck (step-down) DC-DC regulator delivering up to 2 A of output current from a 2.7 V to 5.5 V input, housed in a 10-pin 3 mm × 3 mm MLF/VFQFN exposed-pad package. It features Hyper Speed Control (HSC) architecture that delivers ultra-fast transient response suited for processor core voltages and other dynamic loads, plus an adjustable output from 0.95 V to 3.6 V via an external resistor divider. A synchronous buck regulator (also called a step-down switching regulator) is a type of DC-DC converter that uses PWM-controlled MOSFET switches and an LC output filter to produce a lower output voltage than its input with very high efficiency - typically 90-95% versus 30-60% for a linear (LDO) regulator. Synchronous designs replace the conventional Schottky rectifier with a low-side MOSFET to further reduce conduction losses. Within the broader power-management hierarchy, buck regulators sit between simple LDOs and more complex multi-phase controllers; they are the workhorse of point-of-load (POL) conversion in nearly every portable, embedded, and SoC-based system. The MIC23201YML differentiates itself through its Hyper Speed Control loop, which adapts the switching behavior cycle-by-cycle rather than relying on a fixed-frequency PWM modulator. This produces a transient response that recovers from a load step in microseconds - critical when powering ASICs, FPGAs, and SoCs whose core voltages may demand hundreds of milliamps of step current in nanoseconds. Internal MOSFETs (typical 65 mΩ high-side / 65 mΩ low-side) minimize the need for external switches, and the part requires only a small inductor, a few ceramic capacitors, and feedback resistors to form a complete 2 A supply. Key specifications include a 2.7 V to 5.5 V input range, 0.95 V to 3.6 V adjustable output, 2 A continuous output current, 2 MHz typical switching frequency, internal soft-start, thermal-shutdown and current-limit protection, and a junction operating temperature up to +125 °C. The exposed-pad package provides low thermal resistance (θJA ≈ 60 °C/W) for reliable 2 A operation from a single 3.3 V or 5 V rail. Typical applications include FPGA/ASIC/MCU core-voltage rails, set-top box and cable modem SoC supplies, portable consumer electronics, point-of-load conversion in distributed power systems, and any embedded design that requires a compact, high-efficiency 2 A step-down supply from a single Li-Ion or 5 V rail. When designing with this device, select a 1 µH to 4.7 µH shielded inductor with low DCR, place input/output ceramic capacitors close to the IC, and use the exposed pad as the primary thermal path - 4 thermal vias under the pad are recommended. The feedback resistors should use 1% tolerance parts to maintain VOUT accuracy. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
MIC23303YML-T5 - 3A 4MHz HyperLight Load Sync Buck | Microchip
The Microchip Technology MIC23303YML-T5 is a high-efficiency 4MHz 3A synchronous step-down buck regulator with HyperLight Load mode, Power Good output indicator, and programmable soft-start, housed in a 12-pin 3mm x 3mm VDFN exposed-pad package. It delivers up to 3A of output current from a 2.7V to 5.5V input rail, with an adjustable output from 0.65V up to 3.6V, making it a compact point-of-load solution for low-voltage digital cores. A buck regulator (also called a step-down switching converter) is a power management IC that efficiently converts a higher DC input voltage to a lower DC output voltage using high-frequency switching of an internal MOSFET pair, an external inductor, and an output capacitor. Within the broader taxonomy it sits under switching regulators -> DC-DC converters -> voltage regulators -> power management ICs -> semiconductors. Compared to linear regulators (LDOs), synchronous buck regulators such as the MIC23303YML-T5 achieve 80-95% efficiency across a wide load range because they recycle energy through the low-side MOSFET instead of dissipating it as heat. Key specifications include the 4MHz nominal PWM switching frequency (enabling 1uH-class inductors and sub-20mm^2 total solution footprint), 25uA typical quiescent current for battery savings, internal 65mohm high-side / 45mohm low-side MOSFETs, and a Power Good open-drain output that flags output regulation to a host microcontroller or sequencer. HyperLight Load mode dynamically shifts to PFM-style operation at light loads to maintain efficiency below 100uA loads. Architecturally, the MIC23303YML-T5 integrates both power MOSFETs and compensation inside the package, so only an inductor, input/output ceramic capacitors, and feedback resistors are required externally. The fixed-frequency PWM core combined with internal current-mode compensation provides stable operation across the full 0.65V-3.6V output range and across the -40C to +125C junction temperature window. Typical applications include powering 1.0V/1.2V/1.8V microcontroller and SoC core rails in space-constrained portable devices, providing secondary rails on FPGA/ASIC carrier boards, USB-powered handheld instruments, battery-backed IoT sensor hubs, and low-voltage DDR memory termination supplies. The 3A capability and 0.65V minimum output cover the bulk of sub-3.3V digital load points. When designing with this part, prioritize input capacitor placement directly at the PVIN/PGND pins to minimize switching-node ringing, and respect the 1A/ms PVIN slew-rate limit during hot-plug events. The exposed pad must be soldered to a continuous ground plane to meet the 45C/W thermal resistance; without it, output current derates substantially above 1.5A. This page synthesizes distributor pricing as of 2026-10-09, parametrically-verified drop-in alternatives, and practical layout notes not found in the standalone manufacturer datasheet.
MIC2514BM5 - IttyBitty High-Side Switch, SOT-23-5 | Microchip
The Microchip Technology MIC2514BM5 is an integrated high-side power switch combining a TTL-compatible input with a protected P-channel MOSFET in a compact 5-pin SOT-23-5 package, with an operating temperature range of -40C to +85C. Originally introduced by Micrel Semiconductor (now part of Microchip Technology), it replaces a discrete high-side driver plus MOSFET combination in low-voltage applications. A high-side switch is a power switching device placed between the supply rail and the load, controlling power delivery by switching the positive supply rather than the ground path. High-side switching is preferred in automotive, industrial, and portable systems because a switched-off load remains referenced to ground, avoiding ground-float faults and simplifying fault diagnostics. The MIC2514 belongs to the power management IC category, sitting within load-switch and hot-swap protection devices under semiconductor power control. Key features include the integrated protected P-channel MOSFET output stage, a TTL-compatible logic input that interfaces directly with microcontroller GPIO or logic-level control signals, and integrated protection functions that reduce external component count. The IttyBitty SOT-23-5 package occupies minimal board area, making the part attractive where a discrete solution would need several square millimeters of PCB space plus placement and routing overhead. Technically, the P-channel MOSFET architecture allows the switch to be turned on by pulling the control input low relative to the input supply, with internal charge or level-shift circuitry handling the gate drive. The protection circuitry guards against fault conditions that would otherwise destroy a discrete MOSFET without driver supervision. Because it switches the positive rail, the part eliminates the need for a separate gate-drive supply or charge pump that an N-channel high-side solution would require at these low voltages. Typical applications include USB and peripheral port power switching, low-voltage load switching in battery-powered portable equipment, and replacing discrete driver-plus-MOSFET high-side configurations in low-voltage industrial boards. When designing with the MIC2514BM5, verify the continuous load current, on-resistance, and fault-protection thresholds against the manufacturer datasheet, as these determine thermal rise and protection timing in the end application. This page synthesizes verified distributor data, drop-in alternative guidance, datasheet sourcing, and practical design notes not consolidated in the manufacturer datasheet alone.
MIC2514YM5-TR - 1.2A High-Side Power Switch | Microchip
The Microchip Technology MIC2514YM5-TR is an integrated high-side power distribution switch combining a TTL-compatible control input with a protected P-channel MOSFET in a 5-pin SOT-23-5 (SC-74A/SOT-753) package. It operates from a 3 V to 13.5 V input supply and supports a rated switch current of 1.2 A with a current-limit specification up to 1.9 A. A high-side switch, sometimes called a power distribution switch or load switch, is a power management IC that places a switching element between a supply rail and a load, controlling power delivery from the positive side of the rail. In the broader hierarchy, it sits within power management ICs, alongside hot-swap controllers and power muxes, and it replaces the discrete combination of a high-side driver plus external P-channel MOSFET. Key features of the MIC2514 include its IttyBitty SOT-23-5 footprint that saves board area versus discrete solutions, a TTL-compatible enable input that interfaces directly with 3.3 V and 5 V logic, and integrated protection in the MOSFET stage for robust load switching. The active-high enable polarity simplifies drive from microcontroller GPIO ports without level inversion. Technically, the device integrates a protected P-channel MOSFET power stage with control and protection circuitry, so the designer does not need a separate gate-drive supply or charge pump. This architecture is aimed at low-voltage boards where the switch controls power to a single downstream load or port. Typical applications include USB-style peripheral power switching, hot-board insertion power control, and general-purpose load switching in low-voltage industrial and consumer systems where a single high-side switch replaces a discrete driver-MOSFET pair. Design consideration: keep the input within the 3 V to 13.5 V operating range and budget for the current-limit behavior at full load; a small output capacitor helps manage inrush into capacitive loads. This page synthesizes distributor pricing, drop-in family alternatives, design notes, and practical guidance not found in a single manufacturer datasheet, with pricing verified as of 2026-10-16.
MIC2558BM - PCMCIA Dual Card Socket VPP Switch Matrix | Micrel
The Micrel Semiconductor MIC2558BM is a PCMCIA dual card socket VPP switching matrix that switches the four voltages required by PCMCIA (Personal Computer Memory Card International Association) card VPP1 and VPP2 pins, providing selectable 12.0V flash-programming and card-power voltages from a compact SOIC package. Per the Micrel datasheet, the device integrates two independent switching channels (VPP1 and VPP2) so a single IC can serve a dual-slot PCMCIA card cage. A VPP switching matrix, sometimes called a card-socket power switch, is a specialized power management IC in the broader family of load switches and power-distribution switches. In PC Card (PCMCIA) hosts, the VPP pins of a card socket must present 0V (grounded), 12V (programming voltage for flash cards), or the card's VCC voltage (3.3V or 5V read/write operation), and the switching matrix routes the correct voltage to each socket pin under host controller command. This function sits between the system power rails and the card socket in the notebook or embedded host power architecture. Key features of the MIC2558 include dual-channel operation covering both VPP1 and VPP2 pins of a PCMCIA socket, selectable 12.0V programming voltage output, low on-resistance switching paths to minimize voltage drop during card flash programming, and logic-level control inputs compatible with standard PCMCIA host controller GPIO outputs. The B grade suffix denotes the commercial operating temperature grade, and the M suffix denotes the SOIC surface-mount package. Architecturally, the device uses MOSFET switch segments arranged in a matrix so that any one of the available input voltages can be connected to either VPP output, with break-before-make switching behavior preventing momentary shorts between supply rails. Internal gate-drive circuitry ensures the external MOSFET switches are driven fully on for low drop-out, eliminating the need for discrete level shifters or drivers in the host design. Typical applications include notebook and laptop PCMCIA card slots, industrial embedded hosts with PC Card interfaces, flash-card programming fixtures, and legacy CardBus development systems where 12V VPP flash programming voltage must be supplied to memory cards. When designing with the MIC2558, ensure the 12V programming rail can deliver the card VPP programming current and observe datasheet logic-input timing to guarantee break-before-make switching between voltage states. This page synthesizes distributor sourcing data, drop-in alternative guidance, and practical design notes not found in the manufacturer datasheet.
MIC2776N-YM5-TR - Adjustable Voltage Supervisor SOT-23-5 | Microchip
The Microchip MIC2776N-YM5-TR is a micropower adjustable voltage supervisor with a 0.3V internal reference threshold, manual reset input, and an active-low open-drain reset output, housed in a 5-pin SOT-23-5 package. It monitors a single supply rail and generates a power-on reset signal for microcontrollers and microprocessors. A voltage supervisor (also called a reset generator or supervisory circuit) is a power management IC that watches a supply rail and asserts a reset signal whenever the voltage falls below a defined trip point. Within the component hierarchy, the MIC2776 sits in the power management IC family alongside voltage regulators and battery monitors, serving as the first line of defense against brown-out conditions that could corrupt microcontroller memory or cause uncontrolled I/O states. Key features include the adjustable under-voltage detector built around a precision 300 mV reference: an external resistor divider sets the trip point to any rail voltage above 0.3V, making the device suitable for monitoring 1.8V, 2.5V, 3.3V, and 5V systems. The manual reset (MR) input allows a push-button or host processor to force a reset, and hysteresis on the comparator prevents chatter near the threshold. The reset timeout is at least 140 ms, set by an external capacitor on the delay pin, ensuring processors have adequate stabilization time before code execution begins. Internally, the MIC2776 combines a bandgap reference, a micropower comparator, a delay generator, and an open-drain output stage. The open-drain output can be pulled up to any voltage rail, permitting level translation between the monitored rail and the target processor's reset input - a key advantage when supervising a 1.8V core from a 3.3V domain. Quiescent current is in the microampere class, so the device adds negligible load to battery-powered rails. Typical applications include reset generation for 8-bit and 32-bit microcontrollers (such as the Motorola 68HC11 family cited in the Microchip datasheet), battery-powered portable instruments, industrial control nodes, and set-top or consumer electronics requiring a reliable brown-out guard. Design consideration: because the trip point is set by an external divider, use 1% or better tolerance resistors and account for the internal hysteresis when calculating the release threshold, so noise near the comparator trip region does not cause repeated resets. This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing tiers, pin-compatible drop-in alternatives, comparison tables, and practical design notes in one place. Pricing shown as of 2026-10-16.
MIC28516T-E/PHA - 70V/8A Sync Buck Regulator | Microchip
The Microchip Technology MIC28516T-E/PHA is a 70V-input, 8A-output synchronous DC/DC buck regulator featuring Hyper Speed Control adaptive on-time architecture, integrated low-FOM N-Channel trench FETs, and external soft start in a 32-pin VQFN-EP (5x5 mm) package. It operates from 4.5V to 70V input with adjustable output from 0.6V to 32V and ±1% output accuracy. A buck regulator (step-down switching converter) is a power management IC that efficiently converts a higher DC input voltage to a lower DC output voltage using high-speed switching of integrated power MOSFETs and energy storage in an external inductor and capacitor. Within the broader power management hierarchy, buck regulators sit under DC-DC converters, which themselves belong to the power management IC (PMIC) family. The synchronous topology replaces the traditional Schottky rectifier with a low-side FET, dramatically improving efficiency at high output currents. Key specifications include 8A continuous output current, 4.5V-70V wide input range, 0.6V-32V adjustable output, and Hyper Speed Control that delivers ultra-fast transient response without the loop-compensation complexity of classical voltage-mode controllers. Additional features include external soft-start, internal high-side bootstrap switch, thermal-shutdown, input undervoltage lockout, and a PGOOD indicator. The 32-VQFN exposed-pad package provides a low thermal-resistance path for dissipating power at full 8A load. Internally, the MIC28516 uses Microchip's enhanced adaptive on-time Constant On-Time (COT) controller co-packaged with a pair of low figure-of-merit N-Channel trench MOSFETs. This architecture eliminates the need for external compensation components and achieves fast transient response by modulating the on-time based on input voltage, output voltage, and desired switching frequency - typically 200 kHz to 1 MHz adjustable. Typical applications include industrial 24V/48V point-of-load regulation, telecom and networking equipment power, automotive 12V/24V accessory rails, battery-powered systems up to 60V, distributed power architectures, and general-purpose wide-Vin step-down conversion. Designers value this part when they need a high-current, wide-Vin buck in a compact thermally-enhanced package without writing a compensation network. When designing, choose the external feedback resistor divider for the desired output, size the inductor for 20-40% peak-to-peak ripple, and use ceramic output capacitors with low ESR. The exposed pad must be soldered to a sufficient copper pour (typically 1 sq inch minimum) to keep junction temperature within the 125C operating limit at full 8A load. This page synthesizes distributor pricing, parametric drop-in alternatives, and practical PCB layout/design notes not found in the manufacturer datasheet alone.
MIC29151T-3.3G - 1.5A LDO 3.3V Fixed TO-263-5 | Microchip
The Microchip (formerly Micrel) MIC29151T-3.3G is a high-current, low-dropout (LDO) linear voltage regulator delivering a fixed 3.3V output at up to 1.5A in a 5-pin TO-263-5 surface-mount package. It is part of the MIC29150/29300/29500/29750 high-current LDO family, designed for applications requiring tight regulation, low quiescent current, and robust on-chip protection. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input-to-output voltage differential is small — typically a few hundred millivolts. LDOs sit hierarchically under linear regulators, then voltage regulators, then power management ICs, and ultimately semiconductors. Unlike switching regulators, LDOs add no switching noise to the output, making them ideal as post-regulators following switchers, or for directly powering noise-sensitive analog and digital loads. Key features of the MIC29151T-3.3G include a typical dropout of 350 mV at 1.5A, ±1% initial output accuracy, very low quiescent current, an active-high enable pin for power sequencing, an error flag output (FLG) for monitoring VOUT regulation, and internal protection circuitry including thermal shutdown, current limiting, and reverse-battery protection. The TO-263-5 (DPAK-style) package provides a thermal pad that, with proper PCB copper area, allows sustained 1.5A operation without external heatsinking at moderate VIN-VOUT differentials. The regulator uses a classical PNP-pass architecture with a bandgap reference, which is the engineering foundation for its low-dropout capability and fast transient response. On-chip protection blocks monitor junction temperature and output current independently, and a logic-level FLG pin signals when the output drops approximately 5% below nominal — useful for cascaded power-rail monitoring in multi-supply systems. Typical applications for the MIC29151T-3.3G include 5V-to-3.3V post-regulation in industrial control boards, USB peripheral power, microcontroller and DSP core supplies, battery-backed 3.3V rails, networking line-card logic supplies, and FPGA/MCU auxiliary rails where switching noise from upstream converters must be cleaned up before reaching the load. When designing with the MIC29151T-3.3G, ensure that the worst-case VIN-VOUT differential times load current stays within the package's SOAR limits; at 1.5A the dropout near 350 mV means VIN must be at least approximately 3.65V for regulation. Minimum ESR-stable output capacitance of 10 uF is required, and the enable pin must not be left floating — tie it high through a resistor for always-on operation. This page consolidates the manufacturer datasheet, distributor stock and pricing, drop-in cross-brand equivalents, and practical design notes that supplement — and go beyond — the datasheet's nominal specification tables.
MIC29152WT - 1.5A LDO Regulator, Adjustable, TO-220-5 | Microchip
The Microchip Technology MIC29152WT is a high-current 1.5A low-dropout (LDO) linear voltage regulator with an adjustable output of 1.25V to 26V, housed in a 5-pin TO-220 through-hole package with tab. It accepts input voltages from 2.5V to 26V and uses a PNP pass element to deliver a typical dropout of 350-425 mV at full load. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage. LDOs sit within the broader hierarchy of voltage regulators and power management ICs (PMICs), and are favored for their low noise, simplicity, and fast transient response when compared to switching regulators. The MIC29152WT builds on Micrel's proprietary Super Beta PNP process, which allows high-current delivery with a single PNP transistor and eliminates the need for external PNP pass devices. Key features include a 1.5A continuous output current, 350-425 mV typical dropout at full load, an active-high shutdown pin for power sequencing, an adjustable output set by an external resistor divider, internal current limiting, thermal shutdown, and reverse-battery protection. The TO-220-5 package provides a low thermal resistance path through the tab for efficient heat dissipation. The PNP pass architecture with Super Beta process technology yields excellent load transient response and low quiescent current, making this part suitable for post-regulator filtering of switching supplies and for battery-powered applications. The wide VIN range allows operation directly from multi-cell battery stacks, 5V or 12V rails, or post-regulated intermediate voltages. Typical applications include post-regulation for switching power supplies, battery-powered equipment, USB and peripheral power rails, industrial 12V/24V systems, and high-current point-of-load regulation for FPGAs, microcontrollers, and DSPs. The shutdown pin enables power sequencing in multi-rail systems. When designing with this device, verify that VIN - VOUT remains above the dropout threshold under worst-case load to maintain regulation. Add adequate copper area or a heatsink to the TO-220 tab for high dissipation scenarios above 2W. This page synthesizes distributor pricing, drop-in compatible alternatives from same-package Microchip parts, and practical design notes that are not collated in the manufacturer datasheet alone.
MIC29302BU - 3A Adjustable LDO Regulator, 26V VIN | Microchip
The Microchip Technology MIC29302BU is a 3.0 A high-current, high-accuracy, low-dropout (LDO) linear regulator housed in a 5-lead TO-263 (D2Pak, BU suffix) surface-mount package with an exposed thermal tab. It operates from a VIN range of 2.25 V to 26 V and delivers an adjustable output from approximately 1.25 V up to 25 V, with a typical dropout voltage of 370 mV at full 3 A load. An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input-to-output voltage differential is very small. LDOs sit hierarchically under linear regulators, which in turn belong to the broader voltage regulator family within power management ICs. They are preferred over switching regulators in noise-sensitive applications because they introduce no switching ripple, at the cost of lower efficiency when VIN-VOUT is large. Key features include ±2 % output accuracy, reverse-battery protection, current limiting, thermal shutdown, and an active-high TTL-compatible shutdown (EN) pin. The regulator uses Microchip's proprietary Super βeta PNP pass-element architecture, which keeps ground current low across the load range. The TO-263-5 package with the metal tab tied to the die enables continuous 3 A operation when soldered to adequate copper area. Typical applications include point-of-load regulation after a switching converter, industrial 24 V-to-5 V/3.3 V rails, automotive body modules (non-safety), battery-powered equipment with reverse-polarity protection, and motor-driver auxiliary supplies. The reverse-battery feature is particularly valued in 12 V/24 V lead-acid systems where mis-wiring is a real risk. When using this part, choose output capacitor ESR carefully (per datasheet curve) to avoid output instability, and lay out copper pour under the tab to keep junction temperature within limits - thermal resistance of approximately 2 C/W junction-to-case allows 15 W dissipation with a moderate heatsink.
MIC4120YML-TR - 6A Low-Side MOSFET Gate Driver | Microchip
The Microchip Technology MIC4120YML-TR is a 6 A peak non-inverting low-side MOSFET gate driver IC in an 8-pin MLF (2x2 mm) surface-mount package, supplied on tape and reel. A low-side MOSFET driver is a power-management interface IC that translates logic-level control signals into the high-current gate charge and discharge currents needed to rapidly switch power MOSFETs referenced to ground. Within the signal-chain hierarchy, it sits between a PWM controller or microcontroller GPIO and the power MOSFET gate, providing voltage regulation-independent drive strength that logic outputs alone cannot deliver. Key features include 6 A peak output current capable of driving the largest MOSFETs with an improved safe operating margin, logic-compatible input thresholds accepting any input from 2.4 V to VS without external speed-up capacitors or resistor networks, and negative input voltage protection of up to 5 V below ground. The non-inverting output polarity simplifies firmware development compared with inverting driver alternatives. Architecturally, the MIC4120 is an improved version of the popular MIC4420, incorporating proprietary input circuits that tolerate input undershoot and latch-up-resistant output stages. These circuits protect against damage from electrostatic discharge and electrical overstress, making the part tough and efficient in demanding switching environments. The MLF package offers low inductance for fast gate-current delivery. Typical applications include switch-mode power supplies, DC-DC converter primary-side switching, motor drive gate interfaces, and class-D amplifier output stages where high peak gate current shortens switching transitions and reduces switching losses. Design consideration: keep the driver gate trace short and place a low-ESR decoupling capacitor close to the supply pin, because 6 A peak gate currents can induce significant ground bounce in long loops. This page synthesizes distributor pricing, drop-in alternatives, pinout guidance, and practical design notes not found in the manufacturer datasheet alone.
MIC4420BN - 6A Peak Low-Side MOSFET Driver | Microchip
The Microchip Technology MIC4420BN is a single-channel low-side MOSFET gate driver IC delivering 6 A peak output current in an 8-pin PDIP through-hole package. It is a non-inverting driver fabricated on a bipolar/CMOS/DMOS process and operates from a 4.5 V to 18 V supply. According to the manufacturer datasheet, the device is capable of 6 A peak output and can drive the largest MOSFETs with low switching losses. A low-side gate driver (also called a non-inverting MOSFET driver) is a power-management building block that sits between a low-power control signal (typically from a microcontroller or PWM controller) and the gate of a power MOSFET. Its job is to translate a logic-level PWM input into a high-current drive that can rapidly charge and discharge the MOSFET's gate capacitance, slashing switching losses and eliminating the need for the controller to source/sink gate current directly. Gate drivers belong to the broader power-management IC family and sit alongside voltage regulators, supervisors, and motor drivers. Key features of the MIC4420BN include a 4.5 V to 18 V supply range, can-to-margin switching speeds with typical rise/fall times in the nanosecond range, and matched propagation delays between the input and output edges. The driver is rated for 6 A peak output current both sourcing and sinking, allowing it to handle high gate-charge MOSFETs at high PWM frequencies. The bipolar/CMOS/DMOS process combines low quiescent current with high peak-current capability and rugged latch-up immunity. Typical applications include switch-mode power supplies, motor-drive half-bridge low-side drivers, solenoid drivers, and Class D audio amplifier output stages. Because the part is non-inverting, it can drop into circuits designed around the ubiquitous TC4420 footprint without changing the logic polarity, making it a popular first-pass driver in power designs.
MIC4426YN - Dual 1.5A Inverting MOSFET Driver | Microchip
The Microchip (Micrel) MIC4426YN is a dual 1.5A-peak low-side MOSFET gate driver fabricated on a BiCMOS/DMOS process for low power consumption and high efficiency, supplied in an 8-pin PDIP (0.300 inch, 7.62 mm) through-hole package. It delivers two inverting drivers that translate TTL or CMOS input logic levels to output voltage swings within 25 mV of either the positive supply rail or ground, and it operates from a 4.5 V to 18 V supply with a typical propagation delay of 17 ns. What is a low-side MOSFET driver? A low-side gate driver is a power-management IC that sits between a low-power logic signal (microcontroller PWM output, comparator, or logic gate) and the gate of a power MOSFET or IGBT. Because the driver can source and sink large peak currents (1.5 A in the case of the MIC4426YN), it charges and discharges the MOSFET gate capacitance far faster than the logic device can on its own, slashing switching losses and reducing heat in switch-mode power supplies, motor half-bridges, and pulsed-load circuits. In the broader taxonomy, low-side drivers are a sub-category of gate drivers, which sit under power management and semiconductor ICs. Key features include 1.5 A peak output current per channel, matched rise and fall times for low distortion, 25 mV maximum output offset from either rail, an input threshold that is independent of supply voltage, 6 pF typical input capacitance, and -5 V ESD protection on logic inputs. The driver withstands up to 500 mA of reverse current in either polarity without latching and survives 5 V noise spikes on the ground pin, giving it the ruggedness expected of an industrial-grade driver. Architecturally, the MIC4426YN uses a BiCMOS/DMOS output stage that combines bipolar input logic with DMOS power transistors. This topology achieves the 25 mV rail-to-rail swing that comparable bipolar drivers cannot reach - bipolar parts typically swing only to within 1 V of the rails - and it does so while drawing microamp quiescent current. Two independent inverting channels share bias and protection but otherwise operate without mutual interference. Typical applications include switch-mode power supply (SMPS) synchronous-rectifier gates, DC-DC converter MOSFET drive, motor-driver low-side switches, solenoid and relay coil drivers, line drivers for pulse transformers, and level-shifted interfaces to power MOSFETs in industrial and telecom equipment. The 18 V supply ceiling comfortably drives standard 12 V logic-level and -10 V/-12 V threshold MOSFETs. For design success, place a 1 uF or larger low-ESR bypass capacitor within 1 cm of the VDD pin to keep the high-peak current transients off the upstream supply; otherwise the driver can pull the rail low enough to reset adjacent logic. Keep input traces short and away from switching nodes to avoid false triggering from drain-voltage coupling. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, datasheet-derived specifications, and practical design notes that go beyond what the manufacturer datasheet alone provides.
MIC4451YN - 12A Inverting Low-Side MOSFET Driver | Microchip
The Microchip Technology MIC4451YN is a CMOS inverting low-side gate driver that delivers 12 A peak output current in an 8-pin PDIP through-hole package. It accepts logic-level inputs from 2.4 V up to the supply rail (V_S) and operates from a 4.5 V to 18 V supply. The MIC4451 inverts its input and is offered alongside the non-inverting MIC4452, both rated for 12 A peak sink/source and an output resistance of 0.8 ohm. A low-side gate driver is a power-management IC that sits between a low-power logic controller (microcontroller, FPGA, gate-driver logic output) and the gate of a high-current MOSFET or IGBT. Its purpose is to translate a weak 3.3 V or 5 V logic signal into a strong, fast 0-12 V gate-drive pulse capable of switching large power transistors in nanoseconds, thereby reducing switching losses and avoiding the shoot-through caused by slow gate transitions. Low-side MOSFET drivers -> gate drivers -> power management ICs -> semiconductor devices is the standard taxonomy for this category. Key features of the MIC4451YN include 12 A peak output drive, a low 0.8 ohm output impedance for fast edges, 4.5 V to 18 V supply operation, and proprietary input circuits that tolerate negative input swings down to -5 V without latch-up damage. Internal ESD protection, thermal shutdown, and latch-up immunity make the part suitable for harsh industrial environments. The bipolar/CMOS/DMOS process achieves high peak current in a small die while keeping quiescent supply current modest. Architecture-wise, the MIC4451YN combines a CMOS input stage with a DMOS push-pull output stage, allowing high peak currents without external boost capacitors or speed-up networks. Typical rise/fall times of 20-40 ns into 1000 pF loads make the driver fast enough to switch most TO-220 and TO-247 power MOSFETs efficiently. The device's wide V_S range also makes it compatible with both 5 V and 12 V logic-level designs and with 12 V/24 V industrial supply rails. Typical applications include switch-mode power supply (SMPS) gate drives, motor-driver half-bridge low-side stages, solenoid and relay drivers, DC-DC converter synchronous-rectifier drives, and pulse transformer drivers. The 12 A peak capability is sufficient to switch the largest discrete MOSFETs in sub-1 kW power stages without external discrete buffer transistors. When designing with this part, place a 1 uF low-ESR bypass capacitor directly across V_S and GND to handle the high di/dt of the output stage, and keep the gate-drive loop area minimal to limit ringing. The inverting topology means the MOSFET is ON when the logic input is LOW - verify this against your control firmware to avoid shoot-through in half-bridge configurations. This page synthesizes distributor pricing, drop-in alternatives, comparison parameters, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for part selection.
MIC4452ZT - 12A Non-Inverting Low-Side MOSFET Driver | Microchip
The Microchip Technology MIC4452ZT is a non-inverting, low-side CMOS MOSFET gate driver capable of 12 A peak output from a 4.5 V to 18 V supply. It is packaged in a five-lead TO-220 with tab and is supplied in tube packaging. The device uses a bipolar, CMOS, and DMOS process to provide efficient gate charging for power MOSFETs in demanding switching circuits. A MOSFET gate driver is a specialized power-management IC that converts a low-current logic command into the high peak-current charge and discharge pulses required by a power MOSFET gate. In the broader hierarchy, the MIC4452ZT is a gate driver, then a power MOSFET driver, a power management IC, and a semiconductor. Low-side placement means the driver sits on the same supply side as the MOSFET source referenced to ground. Key verified characteristics include a 12 A peak output, low-side configuration, non-inverting input operation, and approximately 15 ns propagation delay. The manufacturer states that MIC4451 and MIC4452 accept any logic input from 2.4 V up to the supply voltage without external speed-up capacitors or resistor networks. This simplifies control interfaces across different logic-voltage domains. The CMOS output stage can charge and discharge large MOSFET gates rapidly, reducing switching transition time and associated conduction or switching losses. Its 12 A peak capability provides a substantial drive-current margin over the average gate current required during switching. The MIC4452 is the non-inverting member of the family, whereas MIC4451 uses an inverting input configuration. Typical uses include DC motor control, power-converter switching, load drivers, and general high-current MOSFET switching. The TO-220-5 construction also offers a larger thermal path than small surface-mount driver packages, although exact junction-temperature and thermal-resistance limits must be taken from the manufacturer datasheet. Designers should verify absolute maximum voltage, input thresholds, output behavior, and thermal conditions against the official datasheet before production use. Gate resistance, dead time, layout inductance, and the selected MOSFET remain critical to switching performance. The verified material does not provide complete pricing or a complete pin-level mapping, so those details are marked as needed rather than inferred.
MIC47100-1.2YML - 1A Low-VIN LDO, 1.2V Fixed | Microchip
The Microchip MIC47100-1.2YML is a 1 A high-speed, low-VIN LDO linear regulator that delivers a fixed 1.2 V output from input voltages between 1 V and 3.6 V, packaged in an 8-lead 2 mm × 2 mm VDFN (MLF) thermally-enhanced MLP footprint. It combines a 80 mV typical dropout, sub-bandgap reference architecture and excellent transient response into one of the smallest 1 A LDO footprints available. An LDO (Low-Dropout) linear regulator is a member of the linear regulator family that maintains a regulated output even when VIN approaches VOUT. LDOs sit below switching regulators in the power management hierarchy but above simple Zener shunts, offering the lowest noise and fastest transient response at the cost of efficiency. The MIC47100-1.2YML belongs to the high-current, low-VIN segment specifically designed to follow a lower-voltage switching converter and provide the final, clean rail. The headline specifications include 1 A continuous output current, 1.2 V fixed output (±2 % initial accuracy), 80 mV dropout at 1 A, stable operation with only a 1 µF ceramic output capacitor, and an active-high enable pin for sequencing. Thermal performance is enabled by the exposed-pad VDFN package which keeps junction temperatures manageable even at the device's 1 A rating without external heatsinking. Architecturally, the MIC47100-1.2YML uses a P-channel MOSFET pass element and an internal sub-bandgap reference that allows VIN as low as 1 V while still regulating 1.2 V out - a combination impossible with conventional bandgap designs. Internal soft-start, current limit and thermal shutdown complete the protection suite. Typical applications include FPGA/CPLD core voltage rails, ASIC point-of-load supplies, networking SoC auxiliary rails, DDR memory termination, DSP core supplies, and any board that needs a quiet, post-switcher 1.2 V rail. The 1 µF ceramic-only stability eliminates bulky tantalum or polymer capacitors in space-constrained designs. Designers should pay attention to PCB layout: the exposed pad must be soldered to a sufficient copper area (a minimum of 25 mm² is recommended) to achieve rated thermal performance, and the input capacitor should be placed within 5 mm of the VIN pin to control input impedance during transients. This page consolidates distributor pricing, same-family and cross-brand drop-in alternatives, and engineering notes - information not aggregated in a single place in the manufacturer datasheet, giving engineers faster decisions when sourcing a low-VIN, 1 A 1.2 V LDO.