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MIC4684YM (SOP-8) — Symbol, Footprint IPC-7351B & 3D STEP Model

MIC4684YM

MICROCHIPID: C481373SOP-8 · 8 Pins · Pitch 1.27mmIPC-7351B Verified5.0 (0)
SYNCHRONIZED 4D CROSS-PROBE MODETouch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
1. SYMBOL
U1 · MIC4684YM (SOP-8)1SW2GND3IN4BS8EN7GND6GND5FBGrid Pitch = 2.54mm (IEEE-315)-15.2-10.2-5.105.110.215.210.25.10-5.1-10.2mm
2. 2D FOOTPRINT
12345678E=3.90mm · Pitch e=1.27mmD=4.90mm-5-4-3-2-101234543210-1-2-3-4mm
3. 3D CAD MODEL
Package Body: 3.90mm × 4.90mm · Pitch: 1.27mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (8/8)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
PinSymbolTypeFunction (EN)
1SWI/OMultiplexed I/O & Peripheral Pin SW (General)
2GNDGNDGround Reference Pin (GND)
3INI/OMultiplexed I/O & Peripheral Pin IN (General)
4BSI/OMultiplexed I/O & Peripheral Pin BS (General)
5FBI/OMultiplexed I/O & Peripheral Pin FB (General)
6GNDGNDGround Reference Pin (GND)
7GNDGNDGround Reference Pin (GND)
8ENISystem Enable & Hardware Reset (EN)
PIN 1 SW
I/O
Multiplexed I/O & Peripheral Pin SW (General)
Design note: Switch(Output):EmitterofNPNoutputswitch Connecttoexternalstorage . inductorandShottkydiode .
IPC-7351B Solder Density & Span C/G/Z Tuner

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 9 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen
Open PDF in New Window ↗Read Datasheet PDF (.pdf)
PDF VIEWEROfficial Datasheet Document: MIC4684YM (MICROCHIP · SOP-8)
Scroll, search text (Ctrl+F), or expand directly inside the embedded PDF reader below
1. Realistic 3D PackageREPRESENTATIVE
MIC4684YM (SOP-8) - 1. Realistic 3D Package
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
MIC4684YM (SOP-8) - 2. Standard Pinout (Top View)
True package pinout (8 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
MIC4684YM (SOP-8) - 3. Original Datasheet Pinout
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
MIC4684YM (SOP-8) - 4. Package Dimensions (D×E×A)
SOP-8 · 3.90×4.90mm · Pitch 1.27mmExpand ›
5. Recommended Land PatternLAND PATTERN
MIC4684YM (SOP-8) - 5. Recommended Land Pattern
IPC-7351B Footprint (8 Pads)Expand ›
6. Application SchematicSCHEMATIC
MIC4684YM (SOP-8) - 6. Application Schematic
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (9 figures · Page 1/1)
Showing 1–9 of 9 uncropped original figures for MIC4684
P2 · p02_fig01EXACT PACKAGE
MIC4684YM (SOP-8) — Micrel, Inc. MIC4684
Micrel, Inc. MIC4684
P11 · p11_fig01EXACT PACKAGE
MIC4684YM (SOP-8) — Figure 5. Critical Traces for Layout
Figure 5. Critical Traces for Layout
P12 · p12_fig01EXACT PACKAGE
MIC4684YM (SOP-8) — Figure 6. 4V - 16V Input Evaluation Board Schematic Diagram
Figure 6. 4V - 16V Input Evaluation Board Schematic Diagram
P1 · p01_fig01864×246px
MIC4684YM (SOP-8) — MIC4684 Micrel, Inc. MIC4684 MICReL
MIC4684 Micrel, Inc. MIC4684 MICReL
P1 · p01_fig02974×463px
MIC4684YM (SOP-8) — Typical Application | BS VIN 4 | 1 | 5 | 2, 6, 7 | 3 | 8 SW | FB | EN | GND | MIC4684BM CBS 0.33µF/50V | CIN 33µF 35V | 330µF 6.3V 3A 40V | R1 3.01k | R2 3.01k | 68µH | VIN 6.5V to 25V VOUT 2.5V/1.5A | Adjustable Buck Converter
Typical Application | BS VIN 4 | 1 | 5 | 2, 6, 7 | 3 | 8 SW | FB | EN | GND | MIC4684BM CBS 0.33µF/50V | CIN 33µF 35V | 330µF 6.3V 3A 40V | R1 3.01k | R2 3.01k | 68µH | VIN 6.5V to 25V VOUT 2.5V/1.5A | Adjustable Buck Converter
P1 · p01_fig03587×640px
MIC4684YM (SOP-8) — 0 | 20 | 40 | 60 | 80 | 100 | 0 0.5 1 1.5 2 | ) % ( Y C N E I C I F F E | OUTPUT CURRENT (A) | Efficiency vs. Output Current | VOUT = 1.8V VOUT = 2.5V | VOUT = 3.3V | VIN = 5.0V | Efficiency vs. Output Current
0 | 20 | 40 | 60 | 80 | 100 | 0 0.5 1 1.5 2 | ) % ( Y C N E I C I F F E | OUTPUT CURRENT (A) | Efficiency vs. Output Current | VOUT = 1.8V VOUT = 2.5V | VOUT = 3.3V | VIN = 5.0V | Efficiency vs. Output Current
P2 · p02_fig01P2
MIC4684YM (SOP-8) — Datasheet Page 2 (p02_fig01)
Datasheet Page 2 (p02_fig01)
P12 · p12_fig01P12
MIC4684YM (SOP-8) — Datasheet Page 12 (p12_fig01)
Datasheet Page 12 (p12_fig01)
P16 · p16_fig011682×1048px
MIC4684YM (SOP-8) — Micrel, Inc. MIC4684 | Package Information | 8-Lead SOP (M)
Micrel, Inc. MIC4684 | Package Information | 8-Lead SOP (M)

Technical Specifications & Part Details (MIC4684YM)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)
Standard Electronic & Interconnect Component
Detailed Overview:MIC4684YM (SOP-8) is a 8-pin standard electronic & interconnect component featuring a 4.90 × 3.90 × 1.75 mm mechanical envelope (lead pitch e = 1.27 mm). Rated for 4V to 30V supply operation across 40°C to +125°C with integrated PWM interfaces.
Operating Supply VoltageV_CC / V_DD
4V to 30V
Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins
Ambient Operating TemperatureT_A
40°C to +125°C
Industrial temperature grade; T_J(max) = +125°C
Clock / RF Operating Frequencyf_CLK / f_RF
200kHz
Extracted from authoritative PDF specification tables
Current & Power RatingI_OUT / I_CC
I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA
Observe per-pin absolute maximum current limits
Package Envelope (D × E × A)D × E × A
4.90 × 3.90 × 1.75 mm (A1=0.15 mm)
Package family: SOP (SOP-8)
Pin Count & Lead PitchN / e
8 Pins | Pitch e = 1.27 mm (50.0 mil)
Normalized to Center-to-Center Span C per IPC-7351B
Integrated Peripheral InterfacesBuses
PWM
Cross-linked with 4D Pinout & Schematic Symbol
Reflow & Moisture SensitivityIPC / MSL
IPC-7351B Level B | J-STD-020 (Peak 260°C) | MSL-3
60% windowed solder paste stencil on thermal EPAD
Engineering Safety Alert: Verify Pin-1 chamfer orientation on Top Silkscreen prior to SMT pick-and-place assembly.
Engineering Safety Alert: Connect exposed thermal pad (if present) to internal ground plane via 0.3mm stitched thermal vias.

5-Point Standards Verification

Automated compliance checks prior to export
5/5 PASS
IEEE-315 Symbol8 auto-grouped pins
OK
IPC-7351B Land Pattern8 pads · Pitch 1.27mm
OK
IPC-7525 60% Solder PasteReflow 1:1 Standard
OK
DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm
OK
3D STEP AP214 & GLBAligned coordinate origin (0,0,0)
OK

Hardware Verification & Community Engineering Reviews

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet
5.00 PCB Verified

Mechanical Dimensions & Land Pattern (SOP-8)

Extracted from Datasheet & IPC-7351B Normalized
mm
Package Body (D × E)Nominal
4.90 × 3.90 mm
Height (A) & Pitch (e)IPC-7351B
A=1.75mm · e=1.27mm
Pad Size (W × L)Level B
0.60 × 1.55 mm
Pins / Total PadsTopology
8P / 8Pad (DUAL_ROW)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives
DFM READY
Designator / Replacement MPNValue / PackageFunction & PCB Layout Rule
N/A
BOM
Per application circuit
SOP-8
Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — MIC4684YM (SOP-8)

Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formats
IPC-7351B / IEEE-315

What is the Pinout and operating voltage specification of MIC4684YM (SOP-8)?

Manufactured by MICROCHIP, the MIC4684YM is housed in a SOP-8 package with 8 pins and a 1.27 mm lead pitch, supporting a VCC supply range of 4V to 30V. Key pins include: 1 (SW: Multiplexed I/O & Peripheral Pin SW (General)), 2 (GND: Ground Reference Pin (GND)), 3 (IN: Multiplexed I/O & Peripheral Pin IN (General)), 4 (BS: Multiplexed I/O & Peripheral Pin BS (General)), 5 (FB: Multiplexed I/O & Peripheral Pin FB (General)), 6 (GND: Ground Reference Pin (GND)).

What are the IPC-7351B PCB Footprint dimensions for MIC4684YM?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), MIC4684YM (SOP-8) has a nominal body envelope of 3.90 × 4.90 mm, pitch e = 1.27 mm, and 8 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for MIC4684YM?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for MIC4684YM (MICROCHIP, SOP-8) 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 (8 pins) & MIC4684 Family VariantsExpand static table
Pin #Signal NameElectrical TypeFunctional Description & Design Notes
1SWDigital_IOSignal terminal SW (I/O, 4V to 30V domain). Multiplexed alternate functions: SW. Supported peripheral buses: General.
2GNDGND0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
3INDigital_IOSignal terminal IN (I/O, 4V to 30V domain). Multiplexed alternate functions: IN. Supported peripheral buses: General.
4BSDigital_IOSignal terminal BS (I/O, 4V to 30V domain). Multiplexed alternate functions: BS. Supported peripheral buses: General.
5FBDigital_IOSignal terminal FB (I/O, 4V to 30V domain). Multiplexed alternate functions: FB. Supported peripheral buses: General.
6GNDGND0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
7GNDGND0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
8ENDigital_IOChip enable and power-on reset control input (EN): High enables the SoC; Low powers down the chip into reset.
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