Adjustable, 300mA LDO Regulator with Enable


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The RT9179 is a high performance linear voltage regulator with enable high function and adjustable output with a 1.175V reference voltage. It operates from an input of 3V to 5.5V and provides output current up to 300mA with two external resistors to set the output voltage ranges from 1.175V to 4.5V.
The RT9179 has superior regulation over variations in line and load. Also it provides fast respond to step changes in load. Other features include over-current and over-temperature protection. The device has enable pin to reduce power consumption in shutdown mode.
The devices is available in the popular SOT-23-5 package.


Key Spec.
Status Active
Vin (min) (V) 3
Vin (max) (V) 5.5
Vout (min) (V) 1.175
Vout (max) (V) 4.5
Output Adj. Method Resistor
Accuracy (+/- %) 1
Iout (max) (mA) 300
Iq (typ) (uA) 150
Vdropout @ rated current (typ) (mV) 300 @ 0.3A
Cout Type Ceramic
Features Enable Input;OCP;Stable with Ceramic Capacitor
Package Type SOT-25
  • 300mV Dropout @ 300mA
  • 150μA Low Ground Pin Current
  • Excellent Line and Load Regulation
  • <1μA Standby Current in Shutdown Mode
  • Guaranteed 300mA Output Current
  • Stable with 1μF Input and Output Ceramic Capacitor
  • Adjustable Output Voltage Ranges from 1.175V to 4.5V
  • Over-Temperature/Over-Current Protection
  • RoHS Compliant and 100% Lead (Pb)-Free
TitleLast UpdateShareDownload
Adjustable, 300mA LDO Regulator with Enable2003/12/31
Title Last Update ShareDownload
Adjustable, 300mA LDO Regulator with Enable 2015/05/19