SI8244BB-D-IS1R - 2-Channel Isolated Class D Driver | Skyworks
MPN: SI8244BB-D-IS1R ✓ Active| Qty | Unit Price | Extended |
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| 1 | $2.9909 | $2.99 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
SI8244BB-D-IS1R Overview
What is an isolated Class D audio gate driver? An isolated gate driver is a power-management and signal-conditioning device that transfers control signals across an isolation barrier. In a Class D audio power stage, it drives switching devices such as MOSFETs in a full-bridge or half-bridge topology. Its dead-time function controls how long both switches remain off during transition, helping prevent shoot-through while allowing the power amplifier to switch efficiently. The Si824x family combines two isolated drivers in one package and supports audio signal isolation and level translation.
The SI8244BB-D-IS1R is identified in the verified data as a 16-SOIC, two-channel audio line driver. Skyworks states that the SI8244BB-IS1 family supports precise dead-time adjustment, balancing low total harmonic distortion against system efficiency. The -IS1R suffix is treated as the exact ordering code supplied by the distributor data; no unverified package, grade, or temperature details are added.
Typical uses include isolated Class D speaker amplifiers, high-power audio power stages, isolated preamplifier interfaces, and audio systems requiring high-side and low-side switch control. The 16-SOIC package is suitable for conventional surface-mount PCB assembly. Exact gate-drive voltage, propagation delay, dead-time range, isolation rating, channel polarity, and output-current limits must be confirmed in the manufacturer datasheet before final design release.
A key design consideration is that isolation and switching requirements dominate PCB layout. Keep the isolation barrier geometry compliant with the manufacturer’s creepage and clearance guidance, isolate high-voltage switching nodes from logic and audio grounds, and place gate-loop components to minimize parasitic inductance. Do not infer that an equivalent-looking audio driver is electrically interchangeable without checking pin names, dead-time behavior, voltage ratings, and isolation architecture.
This page combines verified distributor listings, the official Skyworks family page, the manufacturer datasheet link, application guidance, and clearly marked data gaps for unreported parameters. It is designed to support early component selection while avoiding fabricated specifications.
Drop-in alternatives for SI8244BB-D-IS1R — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with SI8244BB-D-IS1R (same form factor and footprint) — differing in Product Type, Mounting Type, Package, Output-to-Output Isolation.
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Request AlternativesSI8244BB-D-IS1R Maximum Ratings & Electrical Characteristics
| Product Type | 2-channel isolated Class D audio gate driver |
| Channel Count | 2 channels |
| Package | 16-SOIC |
| Mounting Type | Surface mount |
| Isolation Architecture | Input-to-output and output-to-output isolation |
| Dead-Time Function | Precision dead-time generator |
| Target Applications | Class D audio amplification |
| High-Power Audio Targeting | High-power audio applications above 30 W |
| Signal Level Translation | Enabled without additional external level-translation circuits |
SI8244BB-D-IS1R 16-soic Pin Configuration Guide
Pin configuration for SI8244BB-D-IS1R (16-soic package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for SI8244BB-D-IS1R.
Refer to the datasheet for full pin configuration.
Typical Applications
SI8244BB-D-IS1R is suitable for 6 applications: Isolated Class D Speaker Amplifier, Isolated Audio Preamp Interface, High-Power Audio Bridge Output, Isolated Class D Audio Module, Audio Power-Supply Control, Audio Amplifier Fault Monitoring.
Isolated Class D Speaker Amplifier
SI8244BB-D-IS1R fits an isolated Class D speaker-amplifier output stage because it provides two isolated gate-drive channels and a precision dead-time generator. The driver can control high-side and low-side switches in a bridge topology, while its isolation helps separate the audio-control side from the switching side. The verified manufacturer family data targets high-power audio applications above 30 W, but the final gate-drive voltage, current, timing, and thermal limits must come from the device datasheet.
Recommended
Isolated Audio Preamp Interface
The SI8244BB-D-IS1R can be used as the isolated driver interface between an audio-control domain and a power-conversion domain in a preamplifier or active speaker design. Its two-channel structure supports paired switch control, and the family’s input-to-output and output-to-output isolation provides signal separation without additional level-translation circuitry. Exact logic thresholds, propagation delays, and supply requirements are not present in the verified snippets and must be checked before schematic release.
Recommended
High-Power Audio Bridge Output
For a high-power bridge amplifier, SI8244BB-D-IS1R can drive the complementary switching devices used to develop a bipolar audio output from a single supply. The precision dead-time function helps manage the transition interval and is directly relevant to the manufacturer’s stated goal of balancing low total harmonic distortion with efficiency. MOSFET selection, gate resistors, dead-time setting, switching frequency, and thermal performance remain device- and board-level design decisions.
Recommended
Isolated Class D Audio Module
SI8244BB-D-IS1R is suitable for a modular Class D audio stage where the control electronics and power stage require isolation. The two isolated driver channels support a compact gate-control implementation, while the 16-SOIC package allows conventional surface-mount assembly. Isolation-barrier routing and high-voltage clearance must follow the manufacturer’s PCB requirements; the verified data does not specify the isolation rating, creepage, clearance, or working voltage.
Recommended
Audio Power-Supply Control
The isolated-driver architecture can be used in audio systems that need control-signal transfer across a galvanic boundary, including auxiliary power-control and protection signaling around an audio amplifier. SI8244BB-D-IS1R is not presented as a power converter; it drives switching devices and requires external power-stage components. Confirm whether its isolated channels are appropriate for the required signal direction and topology by checking the manufacturer pinout and application information.
Recommended
Audio Amplifier Fault Monitoring
A designer can use SI8244BB-D-IS1R in an audio power stage where controlled isolation improves the separation between logic commands and high-energy switching nodes. The two-channel implementation can simplify coordinated two-switch drive, while dead-time control helps maintain orderly switching transitions. It does not replace overcurrent, overtemperature, or speaker protection; those functions require separate sensing and shutdown circuitry, and all protection thresholds must be derived from the verified system requirements.
Recommended
Recommended Products Summary
Engineering reference data for SI8244BB-D-IS1R — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SI8244BB-D-IS1 | SI8441AA-D-IS1R | SI8244BB-C-IS1 |
|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC |
| Brand | Skyworks Solutions Inc. | Skyworks Solutions Inc. | Skyworks Solutions Inc. | Skyworks Solutions Inc. |
Key Differentiators
- Two isolated driver channels in one 16-SOIC package (vs SI8441AA-D-IS1R)
- Precision dead-time generation (vs SI8244BB-D-IS1)
- Family support for high-power Class D audio (vs SI8244BB-C-IS1)
Design Notes
Treat the isolation barrier as a layout constraint, not merely a package feature. Keep high-side switch-node copper, gate-drive traces, and low-voltage logic separated according to the manufacturer’s isolation guidance. The verified data does not provide creepage, clearance, or working-voltage values, so obtain those ratings from the official Si824x datasheet before defining copper keepouts and board slots.
The SI8244BB-D-IS1R is a gate driver, not the audio output-power device. Select external MOSFETs using the required gate voltage, gate charge, switching loss, avalanche capability, and thermal resistance, then verify that the driver can charge and discharge their gates within the switching time budget. Do not use the LCSC starting price or the family description as a substitute for electrical ratings.
Dead-time is a central parameter in a Class D bridge. A timing value that is too short can cause shoot-through, while excessive dead time can increase conduction loss and distortion. The precision dead-time generator is identified at family level, but the exact adjustment range and propagation delay are not in the supplied snippets. Use the datasheet timing curves and application circuit during schematic and PCB review.
Compliance Information
Compliance information is not present in the supplied verified web data. Do not infer RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-mineral status.
