Mechanical Dimensions & Land Pattern (MLF-16(3x3))
Extracted from Datasheet & IPC-7351B NormalizedRecommended Companion BOM & Drop-In Equivalents
Passive external components per reference schematic and 1:1 pin-compatible alternatives| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit MLF-16(3x3) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — SY88953LMI (MLF-16(3x3))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of SY88953LMI (MLF-16(3x3))?
Manufactured by MICROCHIP, the SY88953LMI is housed in a MLF-16(3x3) package with 17 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 3.0V to 3.6V. Key pins include: 1 (DIN: Multiplexed I/O & Peripheral Pin DIN (General)), 2 (VCC: Power Supply Input (VCC — 3.0V to 3.6V)), 3 (VCC: Power Supply Input (VCC — 3.0V to 3.6V)), 4 (/DIN: Multiplexed I/O & Peripheral Pin /DIN (General)), 5 (VTHN: Multiplexed I/O & Peripheral Pin VTHN (General)), 6 (SD: Multiplexed I/O & Peripheral Pin SD (General)).
What are the IPC-7351B PCB Footprint dimensions for SY88953LMI?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), SY88953LMI (MLF-16(3x3)) has a nominal body envelope of 3.00 × 3.00 mm, pitch e = 0.50 mm, and 17 copper pads plus a central exposed thermal pad (EPAD) of 1.60 × 1.60 mm with a 60% IPC-7525 windowed solder paste grid.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for SY88953LMI?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for SY88953LMI (MICROCHIP, MLF-16(3x3)) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
Static Reference Appendix: Pinout Table (17 pins) & SY88953 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | DIN | Digital_IO | Signal terminal DIN (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: DIN. Supported peripheral buses: General. |
| 2 | VCC | Power_In | Primary positive power supply input (VCC) operating in the 3.0V to 3.6V domain (Max rating: 3.6V). |
| 3 | VCC | Power_In | Primary positive power supply input (VCC) operating in the 3.0V to 3.6V domain (Max rating: 3.6V). |
| 4 | /DIN | Digital_IO | Signal terminal /DIN (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: /DIN. Supported peripheral buses: General. |
| 5 | VTHN | Digital_IO | Signal terminal VTHN (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: VTHN. Supported peripheral buses: General. |
| 6 | SD | Digital_IO | Signal terminal SD (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: SD. Supported peripheral buses: General. |
| 7 | /SD | Digital_IO | Signal terminal /SD (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: /SD. Supported peripheral buses: General. |
| 8 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 9 | /DOUT | Digital_IO | Signal terminal /DOUT (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: /DOUT. Supported peripheral buses: General. |
| 10 | VCC | Power_In | Primary positive power supply input (VCC) operating in the 3.0V to 3.6V domain (Max rating: 3.6V). |
| 11 | VCC | Power_In | Primary positive power supply input (VCC) operating in the 3.0V to 3.6V domain (Max rating: 3.6V). |
| 12 | DOUT | Digital_IO | Signal terminal DOUT (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: DOUT. Supported peripheral buses: General. |
| 13 | GND | GND | 0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks. |
| 14 | SDLVL | Digital_IO | Signal terminal SDLVL (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: SDLVL. Supported peripheral buses: General. |
| 15 | /EN | Digital_IO | Signal terminal /EN (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: /EN. Supported peripheral buses: General. |
| 16 | VTHP | Digital_IO | Signal terminal VTHP (I/O, 3.0V to 3.6V domain). Multiplexed alternate functions: VTHP. Supported peripheral buses: General. |
| 17 | EP | GND | Bottom exposed die attach pad (EP) providing primary thermal conduction path to the PCB and low-inductance 0V ground return. |