component
A7986A
Public Made by Adomby adom
STMicroelectronics DC-DC Converters, HSOP-8-EP. Pinout cross-checked by two models against the datasheet, 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
markdownA7986A
STMicroelectronics · DC-DC Converters · HSOP-8-EP
A7986A from STMicroelectronics, in a HSOP-8-EP. 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 | OUT | power_out | Regulator output; the DC voltage at this pin is specified from -0.3 V to VCC (absolute maximum ratings). |
| 2 | SYNCH | input | Master/slave synchronization pin: left floating it gives a half-period phase-shifted signal, and an external signal above the internal frequency synchronizes the device with zero phase shift; absolute analog pin range is -0.3 V to 4 V. |
| 3 | EN | input | Active-high enable: the device is ON with EN above 1.2 V and OFF with EN below 0.3 V; the EN pin absolute range is -0.3 V to VCC. |
| 4 | COMP | passive | Error amplifier output used for loop frequency compensation; absolute analog pin range is -0.3 V to 4 V. |
| 5 | FB | input | Feedback input: connecting VOUT directly regulates the output at 0.6 V, otherwise an external resistor divider from VOUT is required; the feedback voltage absolute range is -0.3 V to 1.5 V. |
| 6 | FSW | input | Switching frequency set pin: an external resistor to ground increases the frequency, and leaving it floating gives the free-running 250 kHz; absolute analog pin range is -0.3 V to 4 V. |
| 7 | GND | power_in | Ground reference for the device. |
| 8 | VCC | power_in | Unregulated DC input voltage; the operating input range is 4.5 V to 38 V and the absolute maximum is 45 V. |
| 9 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | HSOP-8-EP |
| Category | Power Management (PMIC) |
| Pins | 9 |
CAD (KiCad official)
- Symbol:
A7986A - Footprint:
Package_SO:SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.41x3.3mm - 3D model: HSOP-8-EP (KiCad packages3D, STEP)
- 3D model files:
a7986a-etched.step/a7986a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);a7986a.step/a7986a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (42 pp, sha256
a76d19b8a435a683, retrieved 2026-10-08, tier: manufacturer) - 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).