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EG1252
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EG Micro AC-DC Controllers And Regulators, SOP-8. 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
markdownEG1252
EG Micro · AC-DC Controllers And Regulators · SOP-8
EG1252 from EG Micro, 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 pin: the PWM duty cycle is set by the voltage on this pin together with the current-sense signal, with an open-circuit voltage of 5.3 V, an overload threshold of 4.6 V and a PWM gain of 2.8 V/V. |
| 2 | BO | input | Input-voltage detection pin for input under-voltage protection, with a protection voltage of 0.9 V and an internal 9 µA pull-down current source active below 0.9 V. |
| 3 | CS | input | Current-sense pin that senses the voltage across the current-sense resistor for cycle-by-cycle over-current protection, with a current-limit threshold of 0.85 to 0.95 V (0.9 V typical) and 250 ns leading-edge blanking. |
| 4 | RI | passive | Frequency-setting pin: a resistor connected between RI and GND sets the switching frequency by Fosc(kHz) = 3640 / RI(kΩ), with an open-circuit voltage of 2 V and a typical test value of RI = 56 kΩ. |
| 5 | GND | power_in | Chip ground reference for the controller. |
| 6 | OUT | output | Gate-drive output that drives the power MOSFET gate, rated at VCC+0.3 V maximum with a typical low-level output of 0.3 V at 20 mA sink and high-level output of 11 V at 20 mA source. |
| 7 | VCC | power_in | Supply pin with an absolute maximum rating of 30 V, a clamp current limit of 10 mA, and a Zener clamp of 31 to 33 V at 10 mA; the datasheet gives UVLO thresholds of 15 to 17 V (turn-on) and 9.5 to 11.5 V (turn-off). |
| 8 | RT | input | Over-temperature protection pin for an external NTC thermistor, sourcing 80 µA; the output switches off when RT falls to 1 V and recovers when RT rises above 1.1 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | EG Micro |
| Package | SOP-8 |
| Category | Power Management (PMIC) |
| Pins | 8 |
CAD (KiCad official)
- Symbol:
EG1252 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
eg1252-etched.step/eg1252-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eg1252.step/eg1252.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: EG Micro datasheet (12 pp, sha256
3606d69203a8bad6, retrieved 2026-10-09, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).