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The RT9078 is a low-dropout (LDO) voltage regulator with an enable function that operates from a 1.2V to 5.5V supply. It provides up to 300mA of output current in miniaturized packaging.
The device features a 2μA low quiescent current and 0.5μA shutdown current, making it ideal for battery-powered applications requiring extended service life. Additional features include a current limit function, over-temperature protection, and output discharge function.
The recommended junction temperature range is -40°C to 125°C.

Applications

  • Portable, Battery Powered Equipment
  • Ultra Low Power Microcontrollers
  • Notebook Computers
Key Spec.
RT9078
Status Active
Vin (min) (V) 1.2
Vin (max) (V) 5.5
Vout (min) (V) 0.8
Vout (max) (V) 3.45
Output Adj. Method Fixed;Resistor
Accuracy (+/- %) 2
Iout (max) (mA) 300
Iq (typ) (uA) 2
Vdropout @ rated current (typ) (mV) 150 @ 0.3A
Bias Rail No
Cout Type Ceramic;Tantalum
Charge Pump No
Features Enable Input;Low Dropout;OCP;Stable with Ceramic Capacitor
Package Type ZQFN1x1-4;TSOT-25
Features
  • Input Voltage Range: 1.2V to 5.5V
  • 2μA Ground Current (IQ) at no Load
  • PSRR = 75dB at 1kHz
  • Adjustable Output Voltage Range:
    ► 0.8V to 5V (TSOT-23-5 Package with SNS Pin Only)
  • ±2% Output Accuracy
  • Low (0.1μA) Shutdown Current
  • Dropout Voltage: 0.15V at 300mA when VVOUT ≥ 3V
  • Support Fixed Output Voltage: 0.8V, 1.0V, 1.05V, 1.1V, 1.2V, 1.25V, 1.3V, 1.5V, 1.8V, 1.85V, 2V, 2.5V, 2.8V, 2.85V, 3V, 3.1V, 3.3V, 3.45V
  • Current Limit Protection
  • Over Temperature Protection
  • Output Active Discharge Function
  • Available in TSOT-23-5 and ZQFN-4L 1x1 (ZDFN-4L 1x1) Packages
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT9078-10GJ5TSOT-253,000 Request Digikey 2,958 Buy
Mouser 3,000 Buy
RT9078-12GJ5TSOT-253,000 Request Digikey 2,946 Buy
Mouser 9,713 Buy
RT9078-12GQZZQFN1x1-42,500 Request Digikey 1,720 Buy
Mouser 2,140 Buy
RT9078-15GJ5TSOT-253,000 Request Digikey 2,214 Buy
Mouser 0 Lead-Time: 14 weeks
RT9078-15GQZZQFN1x1-42,500 Request Digikey 2,500 Buy
Mouser 2,500 Buy
RT9078-18GJ5TSOT-253,000 Request Digikey 2,511 Buy
Mouser 5,136 Buy
RT9078-18GQZZQFN1x1-42,500 Request Digikey 1,125 Buy
Mouser 3,268 Buy
RT9078-25GJ5TSOT-253,000 Request Digikey 3,275 Buy
Mouser 3,413 Buy
RT9078-28GJ5TSOT-253,000 Request Digikey 6,999 Buy
Mouser 2,783 Buy
RT9078-28GQZZQFN1x1-42,500 Request Digikey 4,790 Buy
Mouser 2,130 Buy
RT9078-30GJ5TSOT-253,000 Request Digikey 2,943 Buy
Mouser 2,758 Buy
RT9078-30GQZZQFN1x1-42,500 Request Digikey 2,290 Buy
Mouser 2,200 Buy
RT9078-31GQZZQFN1x1-42,500 Request Digikey 2,500 Buy
Mouser 0 Lead-Time: 14 weeks
RT9078-33GJ5TSOT-253,000 Request Digikey 4,000 Buy
Mouser 8,545 Buy
RT9078-33GQZZQFN1x1-42,500 Request Digikey 1,725 Buy
Mouser 925 Buy
RT9078-J2GQZZQFN1x1-42,500 Request Digikey 2,500 Buy
Mouser 2,470 Buy
RT9078N-08GJ5TSOT-253,000 Request Digikey 3,927 Buy
Mouser 3,789 Buy
RT9078N-12GJ5TSOT-253,000 Request Digikey 2,559 Buy
Mouser 0 Lead-Time: 14 weeks
RT9078N-18GJ5TSOT-253,000 Request Digikey 1,597 Buy
Mouser 0 Lead-Time: 14 weeks
Please confirm with our distributor or sales representative for actual stock status.
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