RT9081A Datasheet, PDF (1/12 Pages) Richtek Technology Corporation – Ultra Low Dropout Linear Regulator

®
RT9081A
500mA, 5.5V, Ultra Low Dropout Linear Regulator
General Description
The RT9081A is a high performance positive voltage
regulator with separated bias voltage (V_BIAS), 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 for
portable applications. The device is available in the ZADFN-
6L 1.2x1.2 package.
Pin Configuration
(TOP VIEW)
VOUT 1
ADJ/NC 2
EN 3
6 VIN
5 GND
7 _{4 BIAS}
ZADFN-6L 1.2x1.2
Features
 Input Voltage Range : 0.8V to 5.5V
 Bias Voltage Range : 2.4 V to 5.5 V
 Output Voltage Fixed and Adjustable Versions
 0.9V to 1.8V (Fixed)
 0.8V to 3.6V (Adjustable)
 1.5% Output Voltage Accuracy @ 25°C
 Ultra Low Dropout Voltage : 140mV at 500mA
 Low Bias Input Current
 80μA in Operating Mode
 0.5μA in Disable Mode
 Enable Control
 Output Active Discharge Function (Optional)
 Stable with a 1μF Output Ceramic Capacitor
 RoHS Compliant and Halogen Free
Applications
 Battery Powered Systems
 Portable Electronic Device
 Digital Set Top Boxes
Ordering Information
Product No.
RT9081A-09GQZA(2)
Nominal Output
Voltage
0.90V
Option
Package
RT9081A-10GQZA
1.00V
RT9081A-1KGQZA
1.05V
RT9081A-11GQZA
1.10V
RT9081A-1AGQZA(2)
RT9081A-12GQZA
RT9081A-1BGQZA(2)
1.15V
1.20V
1.25V
Output Active ZADFN-6L
Discharge 1.2x1.2 (Z-Type)
RT9081A-13GQZA(2)
1.30V
RT9081A-15GQZA(2)
1.50V
RT9081A-18GQZA(2)
1.80V
RT9081AGQZA(2)
Adjustable
Lead Plating
System
Pin 1
Orientation
G : Green
(Halogen Free
and Pb Free)
(2): Quadrant
2
Follow EIA-
481-D
***Empty
means Pin1
orientation is
Quadrant 1
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS9081A-00 November 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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