LDO Regulator. RT9033 Datasheet

RT9033 Regulator. Datasheet pdf. Equivalent

Part RT9033
Description 3A Adjustable Output Voltage LDO Regulator
Feature RT9033 3A Adjustable Output Voltage LDO Regulator General Description The RT9033 is a low dropout .
Manufacture Richtek
Datasheet
Download RT9033 Datasheet

RT9033 3A Adjustable Output Voltage LDO Regulator General RT9033 Datasheet
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RT9033
RT9033
3A Adjustable Output Voltage LDO Regulator
General Description
The RT9033 is a low dropout linear regulator designed for
high output current applications with critical performance.
The IC responds very fast to step changes in load, which
is suitable for low voltage microprocessor applications.
The RT9033 uses an internal P-MOSFET as the pass
device, which does not cause extra GND current in heavy
load and dropout condition. The shutdown mode of low
operation current makes the IC suitable for power-saving
systems.
The RT9033 also works well with low-ESR ceramic
capacitors, reducing the amount of board space necessary
for power applications and consumes less than 1μA in
shutdown mode. The other features include ultra low dropout
voltage, high output accuracy, current limiting protection
and over temperature protection. The RT9033 is available
in the TO-263-5 package.
Ordering Information
RT9033
Package Type
M5 : TO-263-5
Lead Plating System
G : Green (Halogen Free and Pb Free)
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Typical Application Circuit
Features
z High Current Capability : 3A
z Low Dropout : 350mV at 3A
z Low Ground Current : 250μA
z Adjustable Output Voltage
z Extremely Low Output Capacitor Requirement
z Internal Over Current Protection
z Internal Over Temperature Protection
z RoHS Compliant and Halogen Free
Applications
z Battery-Powered Equipment
z High Efficiency GreenComputer Systems
z Automotive Electronics
z High Efficiency Linear Lower Supplies
z High Efficiency Lost-Regulator for Switching Supply
Pin Configurations
(TOP VIEW)
12 345
TO-263-5
Note
:
VOUT
=
VREF
x
(1+
R1
R2
)
VIN
CIN
10µF
Chip Enable
VIN VOUT
RT9033
ADJ
EN
GND
VOUT
COUT
R1 10µF
R2
DS9033-01 April 2011
www.richtek.com
1



RT9033
RT9033
Function Pin Description
Pin No. Pin Name
Pin Function
1 EN
2 VIN
Enable Input Logic, Active High. When the EN goes to a logic low or floating, the
device is in shutdown mode.
Power Supply Input Pin.
3 GND
Ground Pin.
4 VOUT
Regulator Output Pin.
5 ADJ
Adjustable Output Pin
Function Block Diagram
VIN
Buffer
Amplifier
Thermal
EN Current
Limiting
Sensor
VREF
VOUT
ADJ
GND
www.richtek.com
2
DS9033-01 April 2011





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