200mA/500mA Fixed Output Voltage LDO Regulator


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The RT9168/A is a 200mA/500mA low dropout and micropower regulator suitable for portable applications. The output voltages range from 1.5V to 5.0V in 100mV increments and 2% accuracy. The RT9168/A is designed for use with very low ESR capacitors. The output remains stable even with a 1μF ceramic output capacitor.
The RT9168/A uses an internal PMOS as the pass device, which does not cause extra GND current in heavy load and dropout conditions. The shutdown mode of nearly zero operation current makes the IC suitable for battery-powered devices. Other features include current limiting and over temperature protection. The SOT-23-5 and SOP-8 packages are also available for larger power dissipation and design flexibility.


  • Cellular Telephones
  • Laptop, Notebook, and Palmtop Computers
  • Battery-powered Equipment
  • Hand-held Equipment
Key Spec.
RT9168 RT9168A
Status Active Active
Vin (min) (V) 2.9 2.9
Vin (max) (V) 7 7
Vout (min) (V) 1.5 1.5
Vout (max) (V) 5 5
Output Adj. Method Fixed Fixed
Accuracy (+/- %) 2 2
Iout (max) (mA) 200.0 500.0
Iq (typ) (uA) 90 90
Vdropout @ rated current (typ) (mV) 220 @ 0.2A;600 @ 0.5A 220 @ 0.2A;600 @ 0.5A
Cout Type Ceramic Ceramic
Features Enable Input;Low Dropout;OCP;Stable with Ceramic Capacitor Enable Input;Low Dropout;OCP;Stable with Ceramic Capacitor
Package Type SOT-25 SOT-25
  • Stable with Low-ESR Output Capacitor
  • Low Dropout Voltage (220mV at 200mA)
  • Low Operation Current -80μA Typical
  • Shutdown Function
  • Low Temperature Coefficient
  • Current and Thermal Limiting
  • Custom Voltage Available
  • SOT-23-5 and SOP-8 Packages
  • RoHS Compliant and 100% Lead (Pb)-Free
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200mA/500mA Fixed Output Voltage LDO Regulator2015/04/29
Title Last Update ShareDownload
200mA/500mA Fixed Output Voltage LDO Regulator 2015/05/19