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MX6605Q
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Wuxi Maxinmicro DC-DC Converters, SOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MX6605Q
Wuxi Maxinmicro · DC-DC Converters · SOP-8
MX6605Q from Wuxi Maxinmicro, in a SOP-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 | FB | input | Feedback input: the output divider returns here and is compared with the 1.22V reference (1.188V to 1.236V), with a feedback pin input current of 0.05 µA. |
| 2 | FSW | input | Switching frequency set pin, where the frequency is programmed by an external resistor (for example 270 kHz with R4=22K and 234 kHz with R4=32.4K at L=10µH) and shorting it to GND gives 450 kHz. |
| 3 | CS | input | Current limit sense pin that sources 7 µA to 10 µA (8.5 µA typical) to set the programmable current limit. |
| 4 | VIN | power_in | Input supply voltage with an operating range of 4.5 V to 32 V, an input UVLO threshold of 4.25 V to 4.5 V, and an absolute maximum of 40 V. |
| 5 | SW | output | Switch node connected to the internal power MOSFET drain and synchronous MOSFET, with absolute voltage limits of -0.3 V to VIN+1 V and a high-frequency voltage swing that should be kept to a small area. |
| 6 | SW | output | Switch node (second pin, internally tied to pin 5), with absolute voltage limits of -0.3 V to VIN+1 V and a high-frequency voltage swing that should be kept to a small area. |
| 7 | GND | power_in | Ground return for the device and the power traces, which should be kept short, direct and wide. |
| 8 | GND | power_in | Ground pin (second pin, paired with pin 7) for the device ground return. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi Maxinmicro |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Supply Voltage | -0.3 | 40 | V | 2 | |||
| EN, FB Voltages | -0.3 | 6 | V | 2 | |||
| SW Voltages | -0.3 | V | 2 | ||||
| Operating Temperature Range (Note 2) | -40 | 85 | ℃ | 2 | |||
| Storage Temperature Range | -65 | 150 | ℃ | 2 | |||
| Junction Temperature Range | 150 | ℃ | 2 | ||||
| Lead Temperature Range (Soldering, 10 sec) | 265 | ℃ | Soldering, 10 sec | 2 | |||
| Operating Voltage Range | VIN | 4.5 | 32 | V | 3 | ||
| Quiescent Current | IQ | 10 | 15 | 20 | mA | ILOAD=0A | 3 |
| Shutdown Current | ISHDN | 110 | 150 | µA | 3 | ||
| Input UVLO Threshold | VUVLO | 4.25 | 4.5 | V | 3 | ||
| UVLO Hysteresis | ΔVUVLO | 50 | 100 | mV | 3 | ||
| Regulated Voltage | VFB | 1.188 | 1.22 | 1.236 | V | 3 | |
| Current Limit Sense pin Source Current | ILIM-TH | 7 | 8.5 | 10 | µA | 3 | |
| Feedback Pin Input Current | IFB | 0.05 | µA | 3 | |||
| Oscillator Frequency range | fOSC | 115 | kHz | L=22uH~33uH | 3 | ||
| Switching Frequency | 270 | kHz | R4=22K;L=10uH | 3 | |||
| Switching Frequency | 234 | kHz | R4=32.4K;L=10uH | 3 | |||
| Switching Frequency | 284 | kHz | R4=19.1K;L=4.7uH | 3 | |||
| Switching Frequency | 450 | kHz | FSW short to GND | 3 | |||
| DC Max Duty Cycle | 100 | % | 3 | ||||
| RDS(ON) of P-Channel FET | RRFET | 48 | mΩ | 3 | |||
| RDS(ON) of N-Channel FET | RNFET | 25 | mΩ | 3 | |||
| Thermal Shutdown Temperature | TSD | 150 | ℃ | Rising | 3 | ||
| Thermal Shutdown Hysteresis | ΔTSD | 30 | ℃ | 3 |
CAD (KiCad official)
- Symbol:
MX6605Q - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
mx6605q-etched.step/mx6605q-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mx6605q.step/mx6605q.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Wuxi Maxinmicro datasheet (6 pp, sha256
c358cd3053c45e42, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).
# MX6605Q
**Wuxi Maxinmicro** · DC-DC Converters · SOP-8
MX6605Q from Wuxi Maxinmicro, in a SOP-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 | FB | input | Feedback input: the output divider returns here and is compared with the 1.22V reference (1.188V to 1.236V), with a feedback pin input current of 0.05 µA. |
| 2 | FSW | input | Switching frequency set pin, where the frequency is programmed by an external resistor (for example 270 kHz with R4=22K and 234 kHz with R4=32.4K at L=10µH) and shorting it to GND gives 450 kHz. |
| 3 | CS | input | Current limit sense pin that sources 7 µA to 10 µA (8.5 µA typical) to set the programmable current limit. |
| 4 | VIN | power_in | Input supply voltage with an operating range of 4.5 V to 32 V, an input UVLO threshold of 4.25 V to 4.5 V, and an absolute maximum of 40 V. |
| 5 | SW | output | Switch node connected to the internal power MOSFET drain and synchronous MOSFET, with absolute voltage limits of -0.3 V to VIN+1 V and a high-frequency voltage swing that should be kept to a small area. |
| 6 | SW | output | Switch node (second pin, internally tied to pin 5), with absolute voltage limits of -0.3 V to VIN+1 V and a high-frequency voltage swing that should be kept to a small area. |
| 7 | GND | power_in | Ground return for the device and the power traces, which should be kept short, direct and wide. |
| 8 | GND | power_in | Ground pin (second pin, paired with pin 7) for the device ground return. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Wuxi Maxinmicro |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| 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 |
|---|---|---|---|---|---|---|---|
| Input Supply Voltage | | -0.3 | | 40 | V | | 2 |
| EN, FB Voltages | | -0.3 | | 6 | V | | 2 |
| SW Voltages | | -0.3 | | | V | | 2 |
| Operating Temperature Range (Note 2) | | -40 | | 85 | ℃ | | 2 |
| Storage Temperature Range | | -65 | | 150 | ℃ | | 2 |
| Junction Temperature Range | | | | 150 | ℃ | | 2 |
| Lead Temperature Range (Soldering, 10 sec) | | | | 265 | ℃ | Soldering, 10 sec | 2 |
| Operating Voltage Range | VIN | 4.5 | | 32 | V | | 3 |
| Quiescent Current | IQ | 10 | 15 | 20 | mA | ILOAD=0A | 3 |
| Shutdown Current | ISHDN | 110 | | 150 | µA | | 3 |
| Input UVLO Threshold | VUVLO | 4.25 | | 4.5 | V | | 3 |
| UVLO Hysteresis | ΔVUVLO | 50 | | 100 | mV | | 3 |
| Regulated Voltage | VFB | 1.188 | 1.22 | 1.236 | V | | 3 |
| Current Limit Sense pin Source Current | ILIM-TH | 7 | 8.5 | 10 | µA | | 3 |
| Feedback Pin Input Current | IFB | | 0.05 | | µA | | 3 |
| Oscillator Frequency range | fOSC | | 115 | | kHz | L=22uH~33uH | 3 |
| Switching Frequency | | | 270 | | kHz | R4=22K;L=10uH | 3 |
| Switching Frequency | | | 234 | | kHz | R4=32.4K;L=10uH | 3 |
| Switching Frequency | | | 284 | | kHz | R4=19.1K;L=4.7uH | 3 |
| Switching Frequency | | | 450 | | kHz | FSW short to GND | 3 |
| DC Max Duty Cycle | | | 100 | | % | | 3 |
| RDS(ON) of P-Channel FET | RRFET | | 48 | | mΩ | | 3 |
| RDS(ON) of N-Channel FET | RNFET | | 25 | | mΩ | | 3 |
| Thermal Shutdown Temperature | TSD | | 150 | | ℃ | Rising | 3 |
| Thermal Shutdown Hysteresis | ΔTSD | | 30 | | ℃ | | 3 |
## CAD (KiCad official)
- Symbol: `MX6605Q`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `mx6605q-etched.step` / `mx6605q-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mx6605q.step` / `mx6605q.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Wuxi Maxinmicro datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590920731805511680) (6 pp, sha256 `c358cd3053c45e42`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/mx6605q-datasheet.pdf)