IR4427 Dual Low-Side Gate Driver ICs and Related Chips

IR4427 driver ICs: select the exact chip, package and pack size

This collection brings together through-hole IR4427/IR4427PBF and IRS4427-family listings, a surface-mount IR4427S option, and several multi-model chip listings. These are unpopulated ICs, not ready-wired MOSFET driver modules, motor-control boards or power MOSFETs. Product headlines combine search terms for multiple selectable parts: the selected variant determines the actual model, package and quantity. Never assume a multi-model title means a mixed bag of all listed ICs.

What a dual low-side gate driver is for

An IR4427-type dual-channel gate driver buffers control signals to charge and discharge the gates of appropriate external power transistors. The driver belongs between a compatible controller and a separately selected transistor stage; it does not switch a load by itself or provide a complete motor driver. 'Low-side' describes the intended gate-drive topology, not a guarantee that the IC can be substituted for a high-side or floating half-bridge driver. Check the exact manufacturer's pinout, output polarity, logic thresholds, supply range and package drawing for the ordered suffix. A listing's generic 'voltage regulator' or 'logic IC' category label does not change the actual function of a selected gate-driver part.

Output peak-current claims describe a transient gate-charge event under defined conditions, not continuous current delivered to a motor or other load. Driver dissipation depends on gate charge, switching frequency, supply voltage and package thermal conditions; control input levels must be valid relative to the driver supply. Do not extrapolate a voltage or temperature quoted by one supplier listing to all of the selectable parts. Confirm ratings in the device datasheet, especially if a design requires fast edges, significant gate charge, high switching frequency or a noisy power stage.

What the five listings actually offer

• IR4427S SOP-8 selection: one five-piece multi-model product offers an 'IR4427S SOP-8' option alongside MX1208 SOP-16, PCF8591AT SOP-16, LT1073CS8 SOP-8, MIX3001 SOP-16 and APM8001 SOP-8. Those other options are distinct components, not IR4427 package revisions. The listing title says 5PCS; confirm the selected option and order quantity.
• IR4427PBF DIP-8 five-piece listing: a fixed-option listing names IR4427PBF/IRS4427 and DIP-8, with a five-piece headline. Its inherited description includes generic seller warranty, shipping and payment text rather than a manufacturer pin diagram; those statements are not device specifications or Yoeruyo policy.
• IR4427PBF PDIP-8 packs: another product offers 'IR4427PBF 10PCS' and 'IR4427PBF 50PCS'. Select the required quantity explicitly. A supplier's 'original' or named reseller claim is not independent proof of component provenance; use part marking, package and procurement requirements to qualify a critical build.
• Mixed DIP gate-driver options: one five-piece listing offers IR4427PBF alongside IR2113PBF, IR2153PBF, IR2104PBF and IR2110PBF. These ICs serve different driver/control roles and have different pin counts or pin assignments. An IR2110/IR2113 high/low-side driver or IR2153 oscillator-type driver should not be treated as a drop-in replacement for a dual low-side IR4427 just because they appear on the same product page.
• S4427 DIP selection: another listing offers 'S4427 DIP 5PCS' or 'S4427 DIP 10PCS', although its title mentions IRS4427PBF and IR4427PBF. The available selections say S4427 DIP; verify the actual manufacturer marking, complete part number and datasheet before treating that option as an exact IR4427PBF substitute.

IR4427S versus IR4427PBF: package and suffix matter

Do not buy by the '4427' root alone. A surface-mount SOP-8 selection is not mechanically interchangeable with an eight-pin through-hole DIP/PDIP part. For a PCB repair or assembly order, match the exact part marking and suffix to the board footprint, pad pitch, pin-1 orientation and pin assignment. Separate lead-finish or environmental suffixes from package codes only using the verified manufacturer ordering guide; the product title alone is not enough to establish an authentic Pb-free or original-manufacturer pedigree. Even if two variants share a nominal driver function, confirm output polarity, enable behavior, input thresholds and absolute ratings before substitution.

The multi-model pages also include parts that are not gate drivers. PCF8591AT is a mixed-signal converter, LT1073CS8 a converter-related IC, and MX1208/MIX3001/APM8001 are separately named choices with different pin counts or roles. Select those only for their own documented application. A photograph of several chips or a headline listing six models does not establish that every model is shipped together.

Engineering selection checklist

1. Topology: decide whether the circuit actually needs two ground-referenced, low-side gate outputs. If high-side, floating, isolated or half-bridge control is required, choose a driver whose documented architecture supports it rather than relying on the IR4427 search label.
2. Exact order code: compare IR4427S, IR4427PBF, IRS4427PBF and S4427 as written on the chosen option, then validate the full part marking and datasheet. Names used together by a seller are not evidence of electrical or footprint interchangeability.
3. Mechanical fit: match SOP-8 or DIP/PDIP-8, land pattern, pin orientation and assembly method. A five-piece pack of surface-mount chips is not a socket-ready DIP pack.
4. Electrical fit: check recommended operating supply, logic-input compatibility, output behavior and gate-charge demand against the exact chip's documentation. Consider switching loss, driver dissipation, supply bypassing, noise and board layout using a qualified design review.
5. Quantity: compare fixed five-piece products with selectable five-, ten- and fifty-piece options; '10-50 units/lot' in a product title is not a single universal pack quantity.
6. Traceability: where authenticity, date code, compliance or reliability documentation matters, request evidence for the exact ordered stock rather than assuming marketplace phrases such as '100% original' establish it.

Use this collection to compare exact bare IC options for repair, prototyping or PCB assembly. The chosen variant and its verified device datasheet govern what is delivered and whether it fits your circuit; this overview does not supply a universal gate-driver wiring schematic or guarantee suitability for a particular power stage.