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EG1262
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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
markdownEG1262
EG Micro · AC-DC Controllers And Regulators · SOP-8
EG1262 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 whose voltage, together with the current-sense signal, sets the PWM duty cycle; the datasheet gives an open-circuit voltage of 5.3 V, a short-circuit current of 1.2 mA, and an overload protection threshold of 4.6 V. |
| 2 | BO | input | Input voltage detection pin used for input undervoltage protection, with a protection voltage VBO of 0.95 V and an internal 9 uA pull-down current source active when VBO is below 0.9 V. |
| 3 | CS | input | Current-sense pin that senses the voltage across the sense resistor for cycle-by-cycle overcurrent protection, with a current-limit threshold Vcs(max) of 0.92 V to 1.08 V (1 V typical) and 80 ns leading-edge blanking time. |
| 4 | RI | passive | Frequency-setting pin where an external resistor to GND sets the switching frequency according to Fosc (kHz) = 4200 / RI (kΩ), with the datasheet test condition at RI = 56 kΩ and an open-circuit voltage of 2 V. |
| 5 | GND | power_in | Chip ground pin. |
| 6 | OUT | output | Gate-drive output that drives the power MOSFET gate, with a high-level output of 13 V at 20 mA source, a low-level output of 0.3 V at 20 mA sink, and a maximum clamp of 18 V when VCC exceeds 20 V. |
| 7 | VCC | power_in | Power supply pin with an absolute maximum rating of 40 V, a UVLO turn-on threshold of 15 to 17 V (16 V typical), a UVLO turn-off threshold of 9.5 to 11.5 V (10.5 V typical), and an overvoltage protection threshold of 39 V. |
| 8 | RT | input | Overtemperature protection pin where an external NTC thermistor sets the protection point; the internal 75 uA current source pulls RT down as temperature rises, and the switch is turned off when RT falls to 1 V and released when it rises above 1.1 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 电源电压 | VCC | -0.3 | 40 | V | 8 | ||
| VCC 钳位电流 | Iclamp | 10 | mA | 8 | |||
| FB、CS、RI、RT、BO 低压端口 | 6 | V | 8 | ||||
| OUT 输出引脚 | -0.3 | V | 8 | ||||
| TA 环境温度 | TA | -45 | 125 | ℃ | 8 | ||
| Tstr 储存温度 | Tstr | -65 | 150 | ℃ | 8 | ||
| TL 焊接温度 | TL | 300 | ℃ | T=10S | 8 | ||
| VCC 导通阈值电压 | UVLO_OFF | 15 | 16 | 17 | V | 8 | |
| VCC 关闭阈值电压 | UVLO_ON | 9.5 | 10.5 | 11.5 | V | 8 | |
| VCC 脚启动电流 | Istart | 6 | 10 | uA | 8 | ||
| 工作电流 | IVCC | 2.3 | 3.5 | mA | VFB=3V,OUT=1nF | 8 | |
| 限流阈值 | Vcs(max) | 0.92 | 1 | 1.08 | V | 9 | |
| 正常的振荡频率 | Fosx | 68 | 75 | 83 | KHz | 9 | |
| 频率抖动范围 △F(shuffle)/FOSC | △F(shuffle)/FOSC | -4 | 4 | % | 9 | ||
| 最大开关占空比 | Dmax | 42 | 46 | 50 | % | 9 | |
| VCC 过压保护 | VOP_ON | 39 | V | 8 | |||
| VCC 过压保护恢复 | VOP_OFF | 38 | V | 8 | |||
| VCC 齐纳电压钳 | VCC_Clamp | 42 | V | I= 10 mA | 8 | ||
| RT 引脚电流 | I_RT | 75 | uA | 8 | |||
| 温度保护进入电压 | VTH_OTP | 1 | V | 8 | |||
| 温度保护退出电压 | VTH_OTP_off | 1.1 | V | 8 | |||
| BO 脚保护电压 | VBO | 0.95 | V | 8 | |||
| BO 内部下拉电流源 | IBO | 9 | uA | VBO<0.9V | 8 | ||
| FB 开路电压 | Vfb_Open | 5.3 | V | 8 | |||
| FB 短路电流 | Ifb_Short | 1.2 | mA | FB 接地 | 9 | ||
| PWM 增益 | AVcs | 2.8 | V/V | 9 | |||
| 功率限制 FB 阈值电压 | Vth_OLP | 4.6 | V | 9 | |||
| 过载延时时间 | Td_PL | 55 | ms | 9 | |||
| 输入前沿消隐时间 | Tleb | 80 | ns | 9 | |||
| 过电流检测控制延时 | Td_OCP | 120 | ns | GATE=1nF | 9 | ||
| RI 开路电压 | VRI_open | 2 | V | 9 | |||
| 低压输出 | Vol | 0.3 | V | Isink=-20mA | 9 | ||
| 高压输出 | Voh | 13 | V | Isource=20mA | 9 | ||
| 最高输出钳位电压 | VO_clamp | 18 | V | 9 | |||
| 输出上升时间 | T_r | 130 | ns | GATE=1nF | 9 | ||
| 输出下降时间 | T_f | 50 | ns | GATE=1nF | 9 |
CAD (KiCad official)
- Symbol:
EG1262 - Footprint:
Package_SO:SOIC-8_3.9x4.9mm_P1.27mm - 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files:
eg1262-etched.step/eg1262-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);eg1262.step/eg1262.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: EG Micro datasheet (11 pp, sha256
a3570d3172659582, retrieved 2026-10-17, 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).