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The RT9170 is CMOS ultra low quiescent current and low dropout (ULDO) regulators. The devices are capable of supplying 300mA of output current continuously.
The RT9170's performance is optimized for battery- powered systems to deliver 15μA ultra low quiescent current and extremely low dropout voltage. Regulator ground current increases only slightly in dropout, further prolonging the battery life. The other features include ultra low dropout voltage, high output accuracy, current limiting protection, and high ripple rejection ratio.
The devices are available in fixed output voltages range of 1.2V to 3.3V with 0.1V per step. The RT9170 regulators are available in SOT-23-3, SOT-23-5 and 3-lead SOT-89 packages.

Applications

  • Cellular Phones and Pagers
  • Battery-Powered Equipment
  • Laptop, Palmtops, Notebook Computers
  • Hand-Held Instruments
  • PCMCIA Cards
Key Spec.
RT9170
Status Active
Vin (min) (V) 2
Vin (max) (V) 5.5
Vout (min) (V) 1.2
Vout (max) (V) 3.3
Output Adj. Method Fixed
Accuracy (+/- %) 2
Iout (max) (mA) 300
Iq (typ) (uA) 15
Vdropout @ rated current (typ) (mV) 240 @ 0.3A
Cout Type Ceramic
Features Enable Input;Low Dropout;OCP
Package Type SOT-23;SOT-25
Features
  • Ultra-Low Quiescent Current (Typically 15μA)
  • Guaranteed 300mA Output Current
  • Low Dropout : 240mV at 300mA
  • Wide Operating Voltage Ranges : 2V to 5.5V
  • Fast Transient Response
  • Tight Load and Line Regulation
  • TTL-Logic-Controlled Enable Input
  • Current Limiting & Thermal Protection
  • Only 1μF Output Capacitor Required for Stability
  • High Power Supply Rejection Ratio
  • Custom Voltage Available
  • RoHS Compliant and 100% Lead (Pb)-Free
Datasheet
TitleLast UpdateDownload
300mA CMOS LDO Regulator with 15μA Quiescent Current2011/10/05
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