RT9081A-09GQZA(2)

The RT9081A-09GQZA(2) from Richtek is a fixed output, ultra low dropout linear regulator in 6 lead ZADFN package. This high performance positive voltage regulator with separated bias voltage (VBIAS), designed for applications requiring low input voltage and ultra low dropout voltage, output current up to 500mA. The feature of ultra low dropout voltage is ideal for applications where output voltage is very close to input voltage. The input voltage can be as low as 0.8V and the output voltage is adjustable by an external resistive divider. The RT9081A features very low quiescent current consumption. It has Vin line regulation of 0.01%/V (VOUT(NOM) + 0.3V ≤ VIN ≤ 5V), VBIAS line regulation of 0.01%/V (2.7V or (VOUT(normal) + 1.6V) whichever is greater ˂ VBIAS ˂ 5.5V), load regulation of 1.5mV (IOUT = 1mA to 500mA), Vin PSRR of 70dB (VIN to VOUT, f = 1KHz, IOUT = 150mA, VIN ≥VOUT + 0.5V) and VBias PSRR of 80dB (VBIAS to VOUT, f = 1KHz, IOUT = 150mA, VIN ≥ VOUT + 0.5V).

• Fixed output voltage of 0.90V
• Input voltage range from 0.8V to 5.5V and bias voltage range from 2.4V to 5.5V
• 1.5% output voltage accuracy at 25°C
• Ultra low dropout voltage of 140mV at 500mA
• Low bias input current, overtemperature protection (OTP)
• 80μA bias pin operating current (VBIAS = 2.7V), 0.5μA bias pin disable current (VEN ≤ 0.4V)
• Enable control and output active discharge function
• Stable with 1μF output ceramic capacitor
• Output noise voltage of 40µVRMS (VIN = VOUT + 0.5V, VOUT(NOM) = 1V, f = 10Hz to 100KHz)
• Ambient temperature range from -40°C to 85°C

Applications

Power Management, Portable Devices

Warnings

Device is ESD sensitive. Handling precautions are recommended.