The RT9072A/B is a high voltage (80V operation), low quiescent current, low dropout linear regulator. The device supplies 20mA output current with a maximum dropout voltage of 230mV. Its low quiescent and shutdown currents (23μA operating and 3μA shutdown) are ideal for use in battery-powered and/or high voltage systems. Ground current is well-controlled in all conditions, including dropout.

The RT9072A/B operates with any reasonable output capacitors including 1μF low-ESR ceramic types. It features excellent line and load transient responses. Internal protection circuitry includes reverse-battery protection, current limiting, thermal shutdown, and reverse current protection. Output voltage accuracy is ±3% over the entire line, load, and temperature range.

The RT9072A/B has an adjustable output voltage (1.25V to 60V). It is available in the SOT-23-5 package.


  • Low Current, High Voltage Regulators
  • Battery Powered Applications
  • Telecom and Datacom Applications
  • Automotive Applications
Key Spec.
RT9072A RT9072B
Status EOL Active
Vin (min) (V) 4.5 4.5
Vin (max) (V) 80 80
Vout (min) (V) 1.25 1.25
Vout (max) (V) 60 60
Output Adj. Method Resistor Resistor
Accuracy (+/- %) 2 2
Iout (max) (mA) 20 20
Iq (typ) (uA) 23 23
Vdropout @ rated current (typ) (mV) 180 @ 0.02A 180 @ 0.02A
Cout Type Ceramic;Tantalum Ceramic;Tantalum
Features Low Dropout;Stable with Ceramic Capacitor Low Dropout;Stable with Ceramic Capacitor
Package Type SOT-25 SOT-25
  • Wide Input Voltage Range: 4.5V to 80V
  • Low Quiescent Current : 23μA Operating and 3μA Shutdown
  • Low Dropout Voltage : 180mV (typical) at 20mA
  • Adjustable (1.25V to 60V) Output Voltage
  • ±2% Initial Output Tolerance
  • ±3% Output Tolerance over Line, Load, Temperature Range
  • Stable with 1μF Output Capacitor
  • Stable with Aluminum, Tantalum or Ceramic Capacitors
  • No Reverse-Current Protection Diode Needed
  • -80V Reverse-Battery Protection
  • Internal Current Limit
  • Internal Thermal Shutdown Protection
TitleLast UpdateDownload
80V, Low Dropout Voltage Linear Regulator2016/03/15
Part NumberPackage TypePackage Qty.Free SampleBuy From Authorized Distributor
RT9072BGBSOT-253000 Request Buy from Distributor