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Linear Regulator. RT9081D Datasheet

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Linear Regulator. RT9081D Datasheet
















RT9081D Regulator. Datasheet pdf. Equivalent













Part

RT9081D

Description

Ultra Low Dropout Linear Regulator



Feature


® RT9081D 500mA, 5.5V, Ultra Low Dropo ut Linear Regulator General Descriptio n The RT9081D is a high performance pos itive voltage regulator with separated bias voltage (VBIAS), and is designed f or applications requiring low input vol tage and ultra low dropout voltage. The output current is up to 500mA. The fea ture of ultra low dropout voltage is id eal for application.
Manufacture

Richtek

Datasheet
Download RT9081D Datasheet


Richtek RT9081D

RT9081D; s 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 RT9081D features very low quiescent current consumption for porta ble applications. The device is availab le in the ZADFN-6L 1.2x1.2 package. Pi n Configuration (TOP VIEW) VOUT 1 ADJ/ IC 2 EN 3 GND 6 .


Richtek RT9081D

VIN 5 GND 7 4 BIAS ZADFN-6L 1.2x1.2 Fe atures  Input Voltage Range : 0.8V t o 5.5V  Bias Voltage Range : 2.4V to 5.5V  Output Voltage Fixed and Adju stable Versions  0.9V to 1.8V (Fixed )  0.8V to 3.6V (Adjustable)  Acc urate Output Voltage Accuracy (1.5%) Ov er Line, Load @ 25°C  Ultra Low Dro pout Voltage : 140mV at 500mA  Low B ias Input Current  80μA in Operati.


Richtek RT9081D

ng Mode  0.5μA in Shutdown Mode  Enable Control  Output Active Discha rge Function  RoHS Compliant and Hal ogen Free Applications  Battery Powe red Systems  Portable Electronic Dev ice  Digital Set Top Boxes Simplifi ed Application Circuit VIN Enable VBIA S RT9081D VIN VOUT CIN CBIAS EN IC BIAS GND COUT VIN Enable VBIAS RT9081D VIN VOUT CIN EN ADJ .





Part

RT9081D

Description

Ultra Low Dropout Linear Regulator



Feature


® RT9081D 500mA, 5.5V, Ultra Low Dropo ut Linear Regulator General Descriptio n The RT9081D is a high performance pos itive voltage regulator with separated bias voltage (VBIAS), and is designed f or applications requiring low input vol tage and ultra low dropout voltage. The output current is up to 500mA. The fea ture of ultra low dropout voltage is id eal for application.
Manufacture

Richtek

Datasheet
Download RT9081D Datasheet




 RT9081D
®
RT9081D
500mA, 5.5V, Ultra Low Dropout Linear Regulator
General Description
The RT9081D is a high performance positive voltage
regulator with separated bias voltage (VBIAS), and is
designed for applications requiring low input voltage and
ultra low dropout voltage. The output current is 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 RT9081D 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/IC 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 : 2.4V to 5.5V
Output Voltage Fixed and Adjustable Versions
0.9V to 1.8V (Fixed)
0.8V to 3.6V (Adjustable)
Accurate Output Voltage Accuracy (1.5%) Over Line,
Load @ 25°C
Ultra Low Dropout Voltage : 140mV at 500mA
Low Bias Input Current
80μA in Operating Mode
0.5μA in Shutdown Mode
Enable Control
Output Active Discharge Function
RoHS Compliant and Halogen Free
Applications
Battery Powered Systems
Portable Electronic Device
Digital Set Top Boxes
Simplified Application Circuit
VIN
Enable
VBIAS
RT9081D
VIN
VOUT
CIN
CBIAS
EN
IC
BIAS
GND
COUT
VIN
Enable
VBIAS
RT9081D
VIN
VOUT
CIN
EN
ADJ
BIAS
CBIAS
GND
VOUT
R1
COUT
R2
Fixed Voltage Regulator
Adjustable Voltage Regulator
Copyright ©2020 Richtek Technology Corporation. All rights reserved.
DS9081D-00 October 2020
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1




 RT9081D
RT9081D
Ordering Information
Part No.
Nominal Output
Voltage
RT9081D-09GQZA
0.90V
RT9081D-10GQZA
1.00V
RT9081D-1KGQZA
1.05V
RT9081D-11GQZA
1.10V
RT9081D-1AGQZA
1.15V
RT9081D-12GQZA
1.20V
RT9081D-1BGQZA
1.25V
RT9081D-13GQZA
1.30V
RT9081D-15GQZA
1.50V
RT9081D-18GQZA
1.80V
RT9081DGQZA
Adjustable
Package
Lead Plating
System
ZADFN-6L 1.2x1.2 (Z-Type)
G : Green
(Halogen Free and Pb Free)
Note :
Richtek products are :
RoHS compliant and compatible with the current requirements of IPC/JEDEC J-STD-020.
Suitable for use in SnPb or Pb-free soldering processes.
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Copyright ©2020 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS9081D-00 October 2020




 RT9081D
RT9081D
Functional Pin Description
Pin No.
Pin Name
Pin Function
1
VOUT
Regulator output pin. Output capacitor should be placed directly at this pin.
2 (Fixed)
IC
Test pin. Internal pull down by 2A. This pin should be floating or connected to
ground.
2 (Adj)
ADJ
Adjustable output voltage feedback input pin.
3
EN
Chip enable pin. Pulling this pin below 0.54V turns the regulator off, reducing the
quiescent current to a fraction of its operating value.
Power supply input pin for the LDO control circuit. Mandatory to power up VBIAS
4
BIAS
before VEN and VIN for the output soft-start procedure works intended. The VBIAS
must be higher than 2.4V and ensure VBIAS VOUT + 1.6V for normal operation.
5, 7 (Expose pad) GND
Ground. The exposed pad must be soldered to a large PCB and connected to
GND for maximum power dissipation.
6
VIN
Regulator input pin. Input capacitor should be placed directly at this pin.
Functional Block Diagram
VOUT Fixed Version
VIN
VOUT
EN
BIAS
Enable
Logic
UVLO
VREF +
-
Driver
Thermal
Shutdown
Current
Limit
150
GND
VOUT Adjustable Version
VIN
EN
BIAS
Enable
Logic
UVLO
VREF +
-
Driver
Thermal
Shutdown
Current
Limit
VOUT
150
GND
ADJ
Copyright ©2020 Richtek Technology Corporation. All rights reserved.
DS9081D-00 October 2020
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3




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