LD1117S33TR

The LP5907QMFX-3.3Q1 is an AEC-Q100 Grade 1 automotive LDO that delivers a fixed 3.3 V rail at up to 250 mA from a 2.2 V to 5.5 V input. Its 6.5 uVRMS output noise and 82 dB PSRR at 1 kHz make it a clean supply for noise-sensitive RF, sensor and ADC circuits, while 12 uA quiescent current (under 1 uA when disabled) stretches battery life in always-on automotive modules. A 120 mV typical dropout keeps the rail alive through low-battery dips, and +/-2 percent output tolerance with thermal and short-circuit protection reduces field failures and warranty cost. The device is stable with small 1 uF ceramic capacitors, needs no noise bypass capacitor, and supports remote output capacitor placement, which shrinks layout effort and BOM count. Selection advice: this MFX ordering code is the fixed 3.3 V SOT-23-5 option; if your design needs a different rail, choose another fixed-voltage LP5907-Q1 code from the same family, and do not parallel devices because the datasheet specifies a single 250 mA channel. Ranked on hqbuy.com real-time hot list (2026-10-14). 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.

F: 300-mA ultra-low-noise LDO, fixed 3.3-V output, 1.6-6.0-V input, 7-uVRMS noise with no bypass capacitor, 95-dB PSRR at 1 kHz, 140-mV max dropout at 300 mA, plus/minus 1.5% accuracy, smart enable pulldown, 1-mm x 1-mm X2SON-4. A: Noise-bypass-free 7-uVRMS performance and high PSRR feed RF and precision analog rails from a tiny footprint. B: Cleaner sensor and RF measurements and fewer layout respins on dense boards. E: Ranked on hqbuy.com real-time hot list (2026-10-14). Selection advice: this is the 3.3-V fixed-output catalog part, not an automotive-qualified variant, so confirm system-level qualification before use in automotive; pick the DQN (X2SON) or DBV (SOT-23-5) orderable to match your assembly process. 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.

LD1117S12CTR is an STMicroelectronics fixed 1.2V low-dropout linear regulator in SOT-223 - for 1.2V core rails feeding FPGAs, DSPs, MCUs and ASICs from higher-voltage buses. Up to 800mA output current with a typical 1V dropout, plus or minus 1 percent output tolerance at 25C and 75dB typical supply rejection is the selection point: a tight, quiet 1.2V rail from a jelly-bean part that needs only a 10uF minimum output capacitor for stability. The business case is rail simplicity and noise: the NPN pass transistor keeps quiescent current flowing mostly into the load, and on-chip current and thermal limiting protect both the regulator and the downstream core during faults. Evidence: ST lists LD1117S12CTR as Active in its official store with an official datasheet, and the SOT-223 surface-mount package offers solid thermal performance for its size. Selection advice: the S12 code fixes the 1.2V output - do not confuse it with the 1.8V, 2.5V, 3.3V or 5V fixed versions, or with the adjustable LD1117; the CTR suffix denotes SOT-223 on tape and reel; size the copper pour for the dissipation at your actual input-to-output differential, since at 800mA a large drop turns into real heat in SOT-223. Heat basis: Ranked #6 on hqbuy.com real-time hot list (2026-10-15). Parameters verified against STMicroelectronics documentation. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

L298N is a dual full-bridge driver from STMicroelectronics in a Multiwatt-15 package — for DC and stepper motors. This is the classic motor driver that launched a thousand Arduino robot kits: two full bridges in one package, simple to drive, nearly indestructible. Selection advice: the L298 is a bipolar Darlington design with significant saturation voltage drop — at higher currents it runs hot and wastes power, so modern MOSFET-based drivers (like the TB6612FNG) are more efficient for battery applications. Choose the L298N where simplicity and ruggedness matter more than efficiency, and plan heatsinking for the Multiwatt package. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

5 V 1.5 A positive linear voltage regulator with 2% output tolerance, thermal overload and short-circuit protection, in TO-220. Manufacturer status: active. The L7805 is the archetypal 5 V rail: built-in thermal and short-circuit protection makes it nearly indestructible in the field, which is why it remains the default choice for simple, robust 5 V supplies. Selection advice: the CV suffix denotes this package and grade configuration — the L78 family spans many output voltages and packages that are not interchangeable, so match the full L7805CV code to your footprint. At 1.5 A with a large dropout, heatsinking is mandatory — verify your thermal design, or choose a switching regulator where efficiency matters. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086BDTTR is an STMicroelectronics LD1086 adjustable 1.5 A low-dropout regulator — 1.25 to 28.5 V output set by two resistors, up to 30 V input, typical dropout 1.3 V at 1.5 A, ±1% tolerance at 25 °C, in DPAK (TO-252), tape-and-reel packing (TR), -40 to +125 °C. The adjustable output in a compact DPAK is the selection point: one part covers any rail from 1.25 V up with the efficiency advantage that quiescent current flows into the load, unlike PNP LDOs. Selection advice: pin-to-pin compatible with older 3-terminal adjustable regulators per ST, so it upgrades LM317-style layouts — but it is NOT a fixed-voltage part, so confirm the feedback divider values in your BOM. Only a 10 µF minimum output capacitor is needed for stability, and overcurrent plus thermal limits are built in. Evidence: ST LD1086 datasheet and DigiKey listings confirm 1.5 A adjustable, 30 V max input, DPAK and reel packing. Match the full LD1086BDTTR code for output type, package and packing. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086BV-DG is an STMicroelectronics LD1086 adjustable 1.5 A low-dropout regulator in TO-220 — 1.25 to 28.5 V output set by two resistors, up to 30 V input, typical dropout 1.3 V at 1.5 A, ±1% tolerance at 25 °C, tube packing (DG suffix), -40 to +125 °C. The TO-220 through-hole package is the selection point: the best thermal path of the LD1086 family for high-dissipation rails, with a heatsink mounting hole and pin-to-pin compatibility with older 3-terminal adjustable regulators per ST. Selection advice: this is the adjustable version — confirm the feedback divider in your BOM, and note the automotive grade is the separate Y-suffix code, not this catalog -DG code. Only a 10 µF minimum output capacitor is needed for stability, and overcurrent plus thermal limits are built in. For surface-mount assembly choose the DPAK (BDTTR) or D2PAK variants instead. Evidence: ST LD1086 datasheet order-code table and distributor listings confirm adjustable, 1.5 A, TO-220, tube packing. Match the full LD1086BV-DG code for output type, package and packing. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086D2M33TR is an STMicroelectronics LD1086 fixed 3.3 V low-dropout regulator — 1.5 A output, up to 30 V input, typical dropout 1.3 V at 1.5 A, ±1% output tolerance at 25 °C, in D2PAK-3, tape-and-reel packing (TR), -40 to +125 °C. Pin-to-pin compatibility with the older 3-terminal adjustable regulators is the selection point: a drop-in upgrade path from classic LM317-style layouts with better dropout and tolerance. Selection advice: the 1.5 A rating needs real copper — size the D2PAK thermal pad and board pours for your actual (Vin − 3.3 V) × Iout dissipation, or the thermal limit will throttle the rail. Only a 10 µF minimum output capacitor is needed for stability, and overcurrent plus thermal protection are built in. Note the automotive grade exists only for adjustable versions in TO-220/DPAK — this fixed 3.3 V D2PAK code is the standard catalog grade. Evidence: ST LD1086 datasheet and distributor listings confirm 1.5 A, 3.3 V fixed, 30 V max input, D2PAK and reel packing. Match the full LD1086D2M33TR code for voltage, package and packing. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086D2MTR is an STMicroelectronics 1.5 A low-dropout regulator in D2PAK (TO-263) — adjustable output from 1.25 V set by two external resistors output, 1.5 A guaranteed output, 1.3 V typical dropout at 1.5 A, ±1% output tolerance at 25 °C, over-current and thermal protection, tape-and-reel (TR) packing, -40 to +125 °C. The D2PAK (TO-263) package is the selection point: adjustable. Selection advice: do not substitute another LD1086 package code without checking the footprint. Match the full LD1086D2MTR code for package, output type and packing. Evidence: ST LD1086 datasheet (Doc ID 6739) and distributor listings confirm 1.5 A, adjustable output from 1.25 V set by two external resistors, D2PAK (TO-263) and tape-and-reel (TR) packing. Match the full LD1086D2MTR code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1086D2T33TR is an STMicroelectronics LD1086 fixed 3.3 V low-dropout linear regulator — 1.5 A, in D2PAK (TO-263), tape-and-reel packing, input up to 30 V, operating -40 to +125 °C. The 1.3 V typical dropout at 1.5 A with ±1% output tolerance at 25 °C is the selection point: this is the part that makes 3.3 V from a 5 V rail where an LM317-class standard regulator runs out of headroom. Selection advice: pick the LD1086 family by dropout budget — if your input-output differential is under 2 V at full load, the LD1086 works and the LM317 does not; if headroom is generous, the LM317 is cheaper. The D2T (D2PAK) package carries more heat than the smaller DPAK sibling, so for continuous 1.5 A with a large voltage drop, prefer this D2PAK code and verify copper area; for lighter loads the DPAK variants save board space. Only 10 µF minimum output capacitance is needed for stability, and internal current and thermal limits are built in. Evidence: ST LD1086 datasheet and distributor listings confirm 3.3 V, 1.5 A, 1.3 V dropout, D2PAK and tape-and-reel. Match the full LD1086D2T33TR code for voltage, package and packing. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

LD1117S33TR is listed on the AMS1117 alternatives page as a pin-to-pin candidate (registry model LD1117). Review that page’s checklist before substituting.

Microchip and Navitas showed an 800V-to-6V GaN reference design for AI racks, targeting 96% efficiency. What the design actually is, what it signals for component selection, and a five-point buyer checklist.