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EG1397

Public Made by Adom

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EG Micro AC-DC Controllers And Regulators, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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EG1397

EG Micro · AC-DC Controllers And Regulators · SOP-16

EG1397 from EG Micro, in a SOP-16. 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 CSS output Soft-start capacitor pin, which is reset to reset the soft-start before start-up or under overload.
2 Fmax input An external resistor on this pin sets the maximum operating frequency (Fmax).
3 Ctimer bidirectional Sets the fault delay time; the timer capacitor is charged to 4 V to turn off the pulse output and recovers to 1 V to restart.
4 Rt input An external resistor on this pin sets the minimum operating frequency, corresponding to VFB = 1 V; Rt reference voltage is 2.18 to 2.42 V.
5 BO input Detects low input voltage and turns off the outputs when the voltage is above 4 V (BO undervoltage reference 1.1 V typ., lock voltage 4 V typ.).
6 FB input Current flowing into this pin increases the oscillator frequency up to Fmax; the FB voltage range is 1.1 V to 5.3 V, with frequency rising as FB rises.
7 DT input An external resistor on this pin sets the dead time, adjustable from 100 ns to 2 µs.
8 Skip/Disable input When VFB < 0.3 V, releasing this pin enters soft-start mode; when FB is above 0.3 V, soft-start is not entered and burst-mode control applies (skip comparator threshold 690 mV typ.).
9 Fault input Current-sense input: on overcurrent the fault delay timer counts and the soft-start capacitor discharges while frequency rises to limit power; above the higher threshold (Vref(OCP) 1.55 V typ.) the timer charging current is increased 8 times.
10 GND power_in Ground pin of the chip.
11 LO output Low-side gate drive output with 0.8 A source and 1.3 A sink peak current capability.
12 VCC power_in Chip operating supply input; VCC absolute maximum rating is 20 V (VCC turn-on 10.5 V typ., turn-off 9 V typ.).
13 NC unconnected No connection; leave floating.
14 VS power_in High-side driver floating ground (VS absolute range VB-25 V to VB+0.3 V).
15 HO output High-side gate drive output with 0.8 A source and 1.3 A sink peak current capability.
16 VB power_in High-side floating supply input; VB absolute maximum rating is 650 V (VB-to-VS UVLO turn-on 8.5 V typ., turn-off 8 V typ.).

Key specifications

Parameter Value
Manufacturer EG Micro
Package SOP-16
Category Power Management (PMIC)
Pins 16

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
VB 自举高端电源 (absolute max) VB -0.3 650 V 8
VCC 低端电源 (absolute max) VCC -0.3 20 V 8
控制引脚 CSS、Fmax、Rt、BO、FB、DT、Fault、Skip/Disable (absolute max) -0.3 6 V 8
环境温度 TA (absolute max) TA -40 125 ℃ 8
储存温度 Tstr (absolute max) Tstr -55 150 ℃ 8
焊接温度 TL (absolute max) TL 300 ℃ T=10S 8
VCC 开启电压 Vcc(on) 9.7 10.5 11.3 V 9
VCC 关断电压 Vcc(off) 8.2 9 9.8 V 9
VB 开启电压 VB(on) 7.5 8.5 9.5 V VB 相对 VS 电压 9
VB 关断电压 VB(off) 7 8 9 V VB 相对 VS 电压 9
启动电流 Istart-up 180 300 uA VCC<VCC(on) 9
最小频率 FSW(MIN) 58.2 60 61.8 kHz Rt=34KΩ，Vpin6=0.8V,DT=300nS 9
最大频率 FSW(MAX) 440 500 560 kHz Rt=34KΩ，Rfmax=1.9KΩ Vpin6=0.8V,DT=300nS 9
最大占空比 (HO、LO 输出) Dmax 48 50 % HO、LO 输出 9
Rt 引脚参考电压 Vref(Rt) 2.18 2.3 2.42 V 9
定时器电流 1 Itimer1 150 175 190 uA 定时器电容充电电流，Vref(fault)<Vpin9<Vref(ocp) 9
定时器电流 2 Itimer2 1.1 1.3 1.5 mA 定时器电容充电电流，Vpin9>Vref(ocp) 9
3 脚高电压 Vtimer(on) 3.8 4 4.2 V 关闭输出 9
3 脚恢复电压 Vtimer(off) 0.95 1 1.05 V 重启输出 9
Skip 比较电压 Vref(skip) 660 690 720 mV 10
Fault 比较电压 Vref(fault) 1 1.05 1.1 V 10
过流保护参考电压 Vref(OCP) 1.47 1.55 1.63 V 10
保护延时 Tp 60 100 nS 故障保护到输出关闭时间 10
BO 欠压参考电压 VBO 1.05 1.1 1.15 V 10
BO 脚电流 IBO 25 28 31 uA Vpin5>VBO 10
BO 锁住电压 VIatch 3.7 4 4.3 V 10
温度保护 TSD TSD 120 ℃ 10
最低频率精度 (Fsw min accuracy, 文字描述) -3 3 % 13
最高频率精度 (Fsw max accuracy, 文字描述) -12 12 % 13

CAD (KiCad official)

  • Symbol: EG1397
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)
  • 3D model files: eg1397-etched.step / eg1397-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eg1397.step / eg1397.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: EG Micro datasheet (24 pp, sha256 9e9352d021561097, retrieved 2026-10-19, 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF