component
MAX861IUA+
Public Unreviewedby Ray
Analog Devices Inc Maxim Integrated DC-DC Converters, MSOP-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMAX861IUA+
Analog Devices Inc Maxim Integrated · DC-DC Converters · MSOP-8
MAX861IUA+ from Analog Devices Inc Maxim Integrated, in a MSOP-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | FC | input | Frequency Control input. Selects one of three switching frequencies per Table 1: FC=VDD or open ~13kHz, FC=GND ~100kHz, FC=OUT ~250kHz (MAX861). FC input current is only -2 to -4 uA when FC<4V. |
| 2 | C1+ | passive | Flying-Capacitor Positive Terminal. Connect the positive terminal of the flying (pump) capacitor C1 (typically 2.2 uF at 250 kHz) between C1+ and C1-. |
| 3 | GND | power_in | Ground reference in inverter mode. In doubler mode, this pin becomes the Positive Input Supply - the input voltage is applied between pin 3 (positive) and pin 5 (which serves as ground). |
| 4 | C1- | passive | Flying-Capacitor Negative Terminal. Connect the negative terminal of the flying (pump) capacitor C1 between C1+ (pin 2) and C1- (pin 4). |
| 5 | OUT | power_out | Charge-pump output. In inverter mode this is the Negative Output (-VIN nominal). In doubler mode this pin becomes Ground. Sources/sinks up to 50 mA with ~12 ohm typical output resistance. |
| 6 | LV | input | Low-Voltage-Operation input. Connect to GND for inverting operation (may be floated if VDD > 3V for MAX660/ICL7660 compatibility). In doubler mode, must be connected to OUT for all input voltages. |
| 7 | SHDN | input | Active-Low Shutdown input. Drive low (<0.3 V) to shut down the charge pump (supply current drops below 1 uA). Drive high (>1.2 V) to enable. In inverter mode, tie to VDD if unused; in doubler mode, tie to GND if unused. Do not leave floating. |
| 8 | VDD | power_in | Positive Input Supply in inverter mode (+1.5V to +5.5V). In doubler mode this pin becomes the Doubled Positive Output (approximately 2 x VIN). Absolute maximum VDD to GND is +6.0V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc Maxim Integrated |
| Package | MSOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
Ordering variants
Same part, different packaging or reel option.
MAX861IUA+MAX861IUA+ISAMAX861IUA+ESAMAX861IUA+MSAMAX861IUA+MJAMAX861IUA+C/D
CAD (KiCad official)
- Symbol:
MAX861IUA+ - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices Inc Maxim Integrated datasheet (None pp, sha256
924043bfeecf2e5f, retrieved 2026-08-17, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).