component
MIC4680YM
Public Made by Adomby adom
Microchip Tech DC-DC Converters, SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Contents
README
markdownMIC4680YM
Microchip Tech · DC-DC Converters · SOIC-8
MIC4680YM from Microchip Tech, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SHDN | input | Shutdown input: logic low enables the regulator, logic high (>1.6V) shuts it down; ground if unused. |
| 2 | VIN | power_in | Supply voltage input for the unregulated +4V to +34V supply. |
| 3 | SW | output | Switch output (emitter of NPN output switch) that connects to the external storage inductor and Schottky diode. |
| 4 | FB | input | Feedback input: connect to the output on fixed versions, or to the 1.23V tap of the voltage divider on the adjustable version. |
| 5 | GND | power_in | Ground; pins 5-8 are one piece of metal with the die paddle and should connect to a ground plane for heat sinking. |
| 6 | GND | power_in | Ground; pins 5-8 are one piece of metal with the die paddle and should connect to a ground plane for heat sinking. |
| 7 | GND | power_in | Ground; pins 5-8 are one piece of metal with the die paddle and should connect to a ground plane for heat sinking. |
| 8 | GND | power_in | Ground; pins 5-8 are one piece of metal with the die paddle and should connect to a ground plane for heat sinking. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | SOIC-8 |
| Category | Power Management ICs |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Feedback Voltage (±1%) | VFB | 1.217 | 1.23 | 1.243 | V | VIN = 12V; ILOAD = 500mA; TJ = 25°C | 3 |
| Feedback Voltage (±1%), full temperature | VFB | 1.205 | 1.255 | V | VIN = 12V; ILOAD = 500mA; -40°C ≤ TJ ≤ +125°C | 3 | |
| Feedback Voltage | VFB | 1.193 | 1.23 | 1.267 | V | 8V ≤ VIN ≤ 34V, 0.1A ≤ ILOAD ≤ 1A, VOUT = 5V; TJ = 25°C | 3 |
| Feedback Voltage, full temperature | VFB | 1.18 | 1.28 | V | 8V ≤ VIN ≤ 34V, 0.1A ≤ ILOAD ≤ 1A, VOUT = 5V; -40°C ≤ TJ ≤ +125°C | 3 | |
| Maximum Duty Cycle | 93 | 97 | % | VFB = 1.0V | 3 | ||
| Output Leakage Current | 50 | 500 | µA | VIN = 34V, VSHDN = 5V, VSW = 0V | 3 | ||
| Output Leakage Current | 4 | 20 | mA | VIN = 34V, VSHDN = 5V, VSW = -1V | 3 | ||
| Quiescent Current | IQ | 7 | 12 | mA | VFB = 1.5V | 3 | |
| Frequency Fold Back | 30 | 50 | 100 | kHz | 3 | ||
| Oscillator Frequency | 180 | 200 | 220 | kHz | 3 | ||
| Saturation Voltage | 1.4 | 1.8 | V | IOUT = 1A | 3 | ||
| Short Circuit Current Limit | 1.3 | 1.8 | 2.5 | A | VFB = 0V, see Test Circuit | 3 | |
| Standby Quiescent Current | 1.5 | µA | VSHDN = VIN | 3 | |||
| Standby Quiescent Current | 30 | 100 | µA | VSHDN = 5V (regulator off) | 3 | ||
| Shutdown Input Logic Level, regulator off | 1.6 | 2 | V | regulator off | 4 | ||
| Shutdown Input Logic Level, regulator on | 0.8 | 1 | V | regulator on | 4 | ||
| Shutdown Input Current | -10 | -0.5 | 10 | µA | VSHDN = 5V (regulator off) | 4 | |
| Shutdown Input Current | -10 | -1.5 | 10 | µA | VSHDN = 0V (regulator on) | 4 | |
| Thermal Shutdown | 160 | °C | 4 | ||||
| Supply Voltage (absolute maximum) | VIN | 38 | V | voltage transients only | 3 | ||
| Shutdown Voltage (absolute maximum) | VSHDN | -0.3 | 38 | V | 3 | ||
| Steady-State Output Switch Voltage | VSW | -1 | V | 3 | |||
| Feedback Voltage (absolute maximum) | VFB | 12 | V | Adjustable | 3 | ||
| Storage Temperature | Ts | -65 | 150 | °C | 3 | ||
| Supply voltage (operating) | VIN | 4 | 34 | V | VIN(min) = VOUT + 2.5V or 4V whichever is greater | 3 | |
| Junction Temperature (operating) | TJ | 125 | °C | 3 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | 6. Measured on 1" square of 1 oz. copper FR4 printed circuit board connected to the device ground leads. | 4 |
CAD (KiCad official)
- Symbol:
MIC4680YM - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOIC-8 (KiCad packages3D, STEP)
- 3D model files:
mic4680ym-etched.step/mic4680ym-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mic4680ym.step/mic4680ym.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (15 pp, sha256
ceb4f55d62b13bcc, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).