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Главная/Стабилизаторы и DC-DC/LDO 0.8A/SPX1117-ADJ

SPX1117-ADJ

MaxLinearVerifiedSOT-223

Аналоги и замены (1)

OEM part number

SPX1117-ADJ

MaxLinear

Стабилизаторы и DC-DC · LDO 0.8A

CN part number

SGM2121-ADJ

SGMICRO

Стабилизаторы и DC-DC · LDO 0.8A

VerifiedPin-to-PinSOT-223
LDO 0.8А adjustableSOT-223

Комментарии об отличиях

SPX1117-ADJ ↔ SGM2121-ADJ

SPX1117-ADJ: Vin(max)=15V, Vout=1.25-13.8V, Iout=800mA, Vref=1.25V. SGM2121-ADJ: pin-to-pin, Iout=1A. Формула Vout=1.25*(1+R2/R1). R1=120Ω → Iadj path = 10.4mA; для R2: Vout=3.3V → R2=196.8Ω→200Ω, Vout=5V → R2=360Ω. Accuracy: 1.25V ±1% + resistor tolerance. ADJ bypass cap (10uF ADJ→GND) добавляет pole → улучшает PSRR на 15-20dB @100Hz-10kHz — рекомендуется для analog rails. Min load: SPX1117 требует >5mA (R1≤250Ω) — SGM2121 проверить. Thermal: Vin=5V, Vout=1.8V, Iout=0.8A → Pd=2.56W, SOT-223 ΔT≈159°C → требуется copper pour >1sq.inch для Tj<125°C.

Информация предоставлена в справочных целях. Перед внедрением любого аналога обязательно сверьте технические характеристики, температурные режимы и сертификаты безопасности в актуальных даташитах производителей. Ответственность за финальный выбор компонента и его применение несёт инженер.