MP2307DN

MP9943GQ-Z is a Monolithic Power Systems 3 A synchronous step-down converter, 4 to 36 V input, adjustable output from 0.8 V (792 mV feedback reference), 410 kHz, in a QFN-8 (3 × 3 mm) package — a compact point-of-load regulator for set-top boxes, networking gear and industrial modules. The synchronous architecture is the selection point: integrated high-side and low-side MOSFETs eliminate the external Schottky diode that non-synchronous bucks like the TPS5430 require, cutting BOM count and improving light-to-mid-load efficiency in the same 3 A class. Selection advice: the -Z suffix is MPS tape-and-reel packing (-P is tray/tube), so match the suffix to your assembly line; the EN pin gives simple sequencing/shutdown, the PG output supports power-good monitoring, and the SYNC pin accepts 200 kHz to 2.4 MHz external clocking for EMI-sensitive designs. Rated -40 to +125 °C junction. Do not confuse with the MP9943A variant (different feature set) — verify the exact MP9943GQ-Z code on the MPS datasheet. Parameters verified against the MPS MP9943 datasheet (Rev. 1.1) and distributor listings. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

DRV8871DDAR is a brushed DC motor driver from Texas Instruments in an 8-pin SOIC package, with integrated current regulation — for small brushed-DC motors in appliances, toys and automation. Integrated current regulation is the selection point over basic H-bridges: it limits motor current without external sense resistors and comparators, protecting both the motor and the driver. Selection advice: the DDAR suffix denotes SOIC-8 on tape and reel — match the full code to your layout. Confirm your motor voltage and stall current against the datasheet ratings before substituting a different driver. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

MC34063ADR is a Texas Instruments 1.5 A buck/boost/inverting switching regulator in SOIC-8 — the universal DC-DC workhorse: 3–40 V input, adjustable output, up to 100 kHz, 2% precision reference, short-circuit current limiting. Heat evidence: perennial high-demand part for power supply designs — one of the most second-sourced switching regulators ever made. Selection advice: the ADR code is SOIC-8 on reel — the same die ships in PDIP as MC34063AP; for automotive temperature range order the MC33063A variant. Parameters verified against Texas Instruments documentation. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

MC34063ADR2G is an onsemi MC34063A-series buck/boost/inverting switching regulator in SOIC-8, tape and reel — for cost-sensitive auxiliary rails, LED drivers and legacy industrial boards where one jelly-bean part must cover step-up, step-down or inverting topologies. 3 V to 40 V input, adjustable 1.25 V to 40 V output and a 1.5 A internal switch is the selection point: one BOM line that adapts to whatever rail the board needs. Selection advice: the D suffix denotes SOIC-8 for SMT assembly; R2G denotes tape and reel. The 1.5 A rating is the switch current, not the output current — in boost and inverting topologies the available output current is lower, so size the inductor and diode for your topology rather than the headline number. This is a non-synchronous part: cheaper and simpler than modern synchronous bucks, but less efficient — for battery-powered designs, compare it against a synchronous alternative. If you only need step-down at higher current, the TI LM2596S-ADJ/NOPB (3 A, 150 kHz buck) on this site is the proven larger sibling; if you need boost or inverting, the MC34063A remains the flexible choice. Commercial 0 °C to 70 °C grade — for automotive temperature and qualification, ask about the onsemi NCV-prefixed series. onsemi lists this part as Active. Parameters verified against distributor and manufacturer documentation. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

NCP1654BD65R2G is an onsemi continuous-conduction-mode (CCM) power-factor-correction controller, fixed 65 kHz switching, in SOIC-8 — the PFC front end for 100 W+ AC-DC supplies in PCs, adapters and industrial power. The fixed-frequency average-current CCM architecture is the selection point: lower peak currents and easier EMI filtering than critical-conduction-mode controllers at these power levels, with 97% maximum duty cycle for wide-input designs. Selection advice: the D65 code fixes the oscillator at 65 kHz (D133/D200 variants run faster for smaller magnetics) — match the frequency to your inductor and EMI plan, since the three variants are otherwise pin-compatible. It integrates brown-out detection, overvoltage protection and inrush-current detection, but the power stage (MOSFET, boost diode, inductor) is external and must be designed per the onsemi application notes. The R2G suffix is tape-and-reel (2500) Pb-free packing. Parameters verified against the onsemi NCP1654 datasheet and Newark listings. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

TPS54231DR is a Texas Instruments 28 V 2 A non-synchronous buck converter in SOIC-8 — for cost-sensitive 12/24 V to low-voltage rails: set-top boxes, industrial sensors and consumer power adapters. 3.5–28 V input, 0.8–25 V adjustable output, fixed 570 kHz switching, 75 µA typical operating current (1 µA shutdown), Eco-Mode. Heat evidence: high-volume buck converters remain allocation-sensitive as consumer and industrial demand overlaps — the TPS54231 is a staple for 2 A rails. Selection advice: fixed 570 kHz keeps the inductor small and the BOM simple — vs the TPS54360B choose this when 28 V headroom is enough and cost matters more than wide-input margin. Parameters verified against Texas Instruments documentation. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

TPS54331D is a Texas Instruments TPS54331 3 A SWIFT step-down converter in SOIC-8, tube packaging — 3.5 V to 28 V input, adjustable output down to 0.8 V, fixed 570 kHz switching, integrated 80 milliohm high-side MOSFET, pulse-skipping Eco-mode for light-load efficiency, adjustable soft-start and programmable UVLO, −40 °C to +150 °C junction. The D code is the selection point: the standard SOIC-8 on tube for prototypes and low-volume builds — the same silicon as the thermally enhanced DDA/DDAR codes, without the PowerPAD. Selection advice: pick the D when the 3 A load has thermal headroom on standard copper; pick the DDA/DDAR PowerPAD versions when the converter runs near full current in a hot enclosure — the exposed pad drops junction temperature dramatically. Note it is non-synchronous (external catch diode required), unlike fully synchronous bucks. The adjustable 0.8 V feedback covers everything from sub-1 V core rails to 24 V industrial rails. Evidence: TI TPS54331 product page confirms 3.5–28 V, 3 A, 570 kHz, Eco-mode and the SOIC-8 package option. Match the full TPS54331D code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

TPS54331DR is a 3 A synchronous step-down converter from Texas Instruments in an 8-pin SOIC package — for industrial power supplies. Synchronous rectification is the selection point over nonsynchronous bucks: the integrated low-side MOSFET replaces the external Schottky diode, raising efficiency and cutting component count. Selection advice: the DR suffix denotes SOIC-8 on tape and reel — match the full code to your layout. Confirm your input/output voltage and load current against the datasheet, and follow the layout guidance for the switching node. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

UC2842BD1R2G is an onsemi current-mode PWM controller in SOIC-8 — for offline and DC-DC power supplies: flyback adapters, boost converters and industrial power modules. 10 V to 30 V VCC, switching up to 500 kHz, 96% maximum duty cycle, -25°C to +85°C operating range. Heat evidence: onsemi portfolio-wide price increase effective October 2026 — classic PWM controllers are staple inventory for power supply manufacturers building buffer stock. Selection advice: the B suffix means tighter UVLO thresholds than the UC2842A — specify the B variant when predictable startup behavior matters; the D1R2G code is SOIC-8 on tape and reel. Parameters verified against onsemi documentation. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

UC3843BD1R2G is an onsemi high-performance current-mode PWM controller in SOIC-8 — trimmed oscillator with precise frequency control, up to 275 kHz switching, 96% maximum duty cycle, low-voltage UVLO tailored for DC-DC converters (versus the 16 V/10 V UVLO of the UC3842 off-line version), 1 A totem-pole output for driving power MOSFETs, cycle-by-cycle current limiting, 30 V maximum supply, tape-and-reel packing (R2G, 2500/reel), 0 to +70 °C, Active status. The low-voltage UVLO is the selection point: the 3 in UC3843 marks the lower startup threshold versus UC3842 — choose this for DC-DC converters and the UC3842 for off-line mains supplies. Selection advice: the B series is the updated UC3843B family; the D1R2G suffix is the SOIC-8 reel code — match the full UC3843BD1R2G code. A single RC network sets the oscillator frequency. Evidence: onsemi UC3842B/UC3843B datasheet and distributor listings confirm current-mode PWM, 275 kHz, 96% duty, SOIC-8 and reel packing. Match the full UC3843BD1R2G code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.