component
EG1252E
Public Made by Adomby adom
EG Micro AC-DC Controllers And Regulators, SOP-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.
README
markdownEG1252E
EG Micro · AC-DC Controllers And Regulators · SOP-8
EG1252E 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 input whose voltage, together with the current-sense signal, determines the PWM duty cycle; low-voltage port absolute maximum is 6 V. |
| 2 | BO | input | Input voltage detection pin for input undervoltage protection, with a 1 V protection threshold and a 5 µA internal pull-down active below 1 V; low-voltage port absolute maximum is 6 V. |
| 3 | CS | input | Current-sense input that senses the voltage across the current-sense resistor for cycle-by-cycle current limiting (Vcs(max) 0.92 to 1.08 V, 80 ns leading-edge blanking); low-voltage port absolute maximum is 6 V. |
| 4 | RI | passive | Oscillator frequency-setting pin, where a resistor connected to GND sets the PWM frequency per Fosc(kHz) = 4300 / RI(kΩ); low-voltage port absolute maximum is 6 V. |
| 5 | GND | power_in | Chip ground. |
| 6 | OUT | output | Gate drive output for the external power MOSFET, rated from -0.3 V to VCC+0.3 V, with output voltage clamped to 18 V when VCC exceeds 20 V. |
| 7 | VCC | power_in | Supply pin with an absolute maximum of 32 V and an internal zener clamp of 37 V at 10 mA (clamp current maximum 10 mA). |
| 8 | SS | passive | Soft-start pin where an external capacitor is charged by an internal 10 µA source and discharged by the internal switch during undervoltage; low-voltage port absolute maximum is 6 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | EG Micro |
| 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 |
|---|---|---|---|---|---|---|---|
| VCC supply voltage | VCC | -0.3 | 32 | V | - | 8 | |
| VCC clamp current | Iclamp | 10 | mA | - | 8 | ||
| Low-voltage pins FB, CS, RI, SS, BO | 6 | V | - | 8 | |||
| OUT output pin | -0.3 | V | - | 8 | |||
| Ambient operating temperature | TA | -45 | 125 | ℃ | - | 8 | |
| Storage temperature | Tstr | -65 | 150 | ℃ | - | 8 | |
| Soldering temperature | TL | 300 | ℃ | T=10S | 8 | ||
| VCC start-up current | Istart | 18 | 30 | uA | 8 | ||
| Operating current | IVCC | 2.3 | 3.5 | mA | VFB=3V,OUT=1nF | 8 | |
| Current-limit threshold | Vcs(max) | 0.92 | 1 | 1.08 | V | 9 | |
| Normal oscillation frequency | Fosx | 92 | 100 | 108 | KHz | 9 | |
| Frequency shuffle range | △F(shuffle)/FOSC | -4 | 4 | % | 9 | ||
| Maximum switch duty cycle | Dmax | 43 | 46 | 49 | % | 9 | |
| VCC turn-on threshold voltage | UVLO_OFF | 14 | V | 8 | |||
| VCC turn-off threshold voltage | UVLO_ON | 9.5 | V | 8 | |||
| VCC zener clamp voltage | VCC_Clamp | 37 | V | I= 10 mA | 8 | ||
| SS pin charge current | I_SS | 10 | uA | 8 | |||
| Soft-start complete threshold | V_SS | 3.5 | V | 8 | |||
| BO pin protection voltage | VBO | 1 | V | 8 | |||
| BO internal pull-down current | IBO | 5 | uA | VBO<1V | 8 | ||
| FB open-circuit voltage | Vfb_Open | 4.5 | V | 8 | |||
| FB short-circuit current | Ifb_Short | 0.8 | mA | FB 接地 | 8 | ||
| PWM gain | AVcs | 2.8 | V/V | 8 | |||
| Overload delay time | Td_PL | 150 | ms | 8 | |||
| Leading-edge blanking time | Tleb | 80 | ns | 9 | |||
| Overcurrent detection control delay | Td_OCP | 100 | ns | GATE=1nF | 9 | ||
| RI open-circuit voltage | VRI_open | 2 | V | 9 | |||
| Gate low output voltage | Vol | 0.3 | V | Isink=-20mA | 9 | ||
| Gate high output voltage | Voh | 13 | V | Isource=20mA | 9 | ||
| Maximum output clamp voltage | VO_clamp | 17 | V | 9 | |||
| Output rise time | T_r | 300 | ns | GATE=10nF | 9 | ||
| Output fall time | T_f | 200 | ns | GATE=10nF | 9 | ||
| Output source current | IO+ | 0.5 | A | Vo=0V, PW≤10uS | 9 | ||
| Output sink current | IO- | 0.8 | A | Vo=15V, PW≤10uS | 9 |
CAD (KiCad official)
- Symbol:
EG1252E - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
eg1252e-etched.step/eg1252e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eg1252e.step/eg1252e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: EG Micro datasheet (11 pp, sha256
8048eac31bb2b0b5, retrieved 2026-10-15, 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).