SI9183DT-AD-T1 is an LDO voltage regulator, 150mA adjustable, 1.5V-5V output power management IC, and the KF1921 Chip of Whatsminer M21S hash board is LDO power supply relationship, LDO power supply to the chip signal transmission normally, each The layer has an LDO chip for power supply, pin 5 output, the voltage is 1.8V, and the voltage is divided by 0.9V and sent to the chip. An LDO is a linear regulator that uses a transistor or field-effect transistor (FET) operating in its saturation region to subtract excess voltage from the applied input voltage to produce a regulated output voltage.

Remark: ME6214C18M5G voltage regulator can replace SI9183DT-AD-T1

Parameters：

Manufacturer: Vishay

Product Category: LDO Voltage Regulators

RoHS: N

Mounting Style: SMD/SMT

Package / Case: SOT-23-5

Output Voltage: 1.5 V to 5 V

Output Current: 150 mA

Number of Outputs: 1 Output

Polarity:Positive

Input Voltage, Min: 2 V

Input Voltage, Max: 6 V

Output Type:Adjustable

Minimum Operating Temperature:- 40 C

Maximum Operating Temperature:+ 85 C

Brand: Vishay / Siliconix

Height: 0.95 mm

Length: 3.05 mm

Line Regulation: 0.18 % / V

Load Regulation:30 mV

Pd - Power Dissipation: 555 mW

Product Type: LDO Voltage Regulators