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OC7550

Public Made by Adom

by adom

OCX(欧创芯) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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OC7550

OCX(欧创芯) · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT89-3

OC7550 from OCX(欧创芯), in a SOT89-3. 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 GND power_in Ground pin, the reference for the regulator (datasheet lists it as 地, ground).
2 VCC power_in Supply input; the datasheet gives an input range of 3.5 V to 40 V, with an absolute maximum of 44 V from VCC to GND.
3 VOUT output Regulated output; absolute maximum is 7 V to GND, and at least 2.2 uF of effective output capacitance is required for stability.

Key specifications

Parameter Value
Manufacturer OCX(欧创芯)
Package SOT89-3
Category Power Management (PMIC)
Pins 3

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
输出电压范围 VOUT 2.5 5.2 V 4
直流输出精度 -2 2 % ILOAD=10mA 4
压降电压 600 mV ILOAD=100mA 4
VCC 静态电流 IQ 3 5 uA ILOAD=0mA，VCC=3.5~36V，VOUT=3.3v 4
线性调节率 0.02 0.03 %/V VCC=4.5~36V，ILOAD=10mA 4
负载调节率 ΔVOUT 15 mV 0<ILOAD<50mA，VCC=VOUT+2V 4
输出电流限制 206 mA VOUT=0.85*VOUT（normal） 4
短路电流 ISHORT 85 mA VOUT短路到 GND 4
电源抑制比 (f=100Hz) PSRR -86 dB f=100Hz，IOUT=10mA，VCC=12v 4
电源抑制比 (f=100kHz) PSRR -47 dB f=100kHz，IOUT=10mA，VCC=12v 4
热保护温度 145 ℃ ILOAD=30mA 4
热保护温度迟滞 20 ℃ 4
VCC 端到 GND 最大电压值 VCC -0.3 44 V VCC端到GND 3
VOUT 端到 GND 最大电压值 VOUT -0.3 7 V VOUT端到GND 3
VOUT 端到 VCC 端最大电压值 VOUT-VCC -44 0.3 V VOUT端到VCC端 3
SOT89-3 封装最大功耗 PSOT89-3 0.6 W SOT89-3封装 3
HBM ESD VHBM 2000 V HBM 3
工作温度范围 TA -40 85 oC 3
存储温度范围 TSTG -65 150 oC 3
焊接温度 TSD 260 oC 时间少于 10s 3
输入电压范围 VCC 3.5 40 V 1
最小需要的输出有效电容 2.2 uF 5

CAD (KiCad official)

  • Symbol: OC7550
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT89-3 (KiCad packages3D, STEP)
  • 3D model files: oc7550-etched.step / oc7550-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); oc7550.step / oc7550.glb are the bare package body.

Provenance

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

  • Datasheet: OCX(欧创芯) datasheet (7 pp, sha256 1c9626de1cad66a6, 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, 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