25LC128
RT9193-4 (2)RT9193 (40)RT919 (93)RT91 (294)RT9 (855)

Richtek

RT9193-45GB

Linear Voltage Regulator IC Positive Fixed 1 Output 4.5V 300mA SOT-23-5
Richtek

RT9193-4GGB

Linear Voltage Regulator IC Positive Fixed 1 Output 4.75V 300mA SOT-23-5

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