Linear Regulator. RT9068 Datasheet

RT9068 Regulator. Datasheet pdf. Equivalent

RT9068 Datasheet
Recommendation RT9068 Datasheet
Part RT9068
Description Low Dropout Voltage Linear Regulator
Feature RT9068; ® RT9068 60V, 30μA IQ, Low Dropout Voltage Linear Regulator General Description The RT9068 family .
Manufacture Richtek Technology
Datasheet
Download RT9068 Datasheet




Richtek Technology RT9068
®
RT9068
60V, 30μA IQ, Low Dropout Voltage Linear Regulator
General Description
The RT9068 family are high voltage (60V operation), low
quiescent current low dropout linear regulators capable of
supplying 50mA of output current with a maximum dropout
voltage of 300mV. The low quiescent and shutdown
currents (30μA operating and 2μA shutdown) are ideal for
use in battery-powered and/or high voltage systems.
Ground current is well-controlled in all conditions, including
dropout.
The RT9068 family operates with any reasonable output
capacitors including 1μF low-ESR ceramic types and
features excellent line and load transient responses.
Internal protection circuitry includes reverse-battery
protection, current limiting, thermal shutdown, and reverse
current protection. Output voltage accuracy is ±2% over
the entire line and load range.
These devices are available in 3 fixed-output versions
(2.5V, 3.3V, 5V) as well as a version that supports an
adjustable output voltage (1.25V to 60V). All versions
come in SOP-8 and MSOP-8 packages with an exposed
pad for high power dissipation.
Features
Wide Input Voltage Range : 4.5V to 60V
Low Quiescent Current : 30μA Operating and 2μA
Shutdown
Low Dropout Voltage : 300mV maximum at 50mA
Fixed (2.5V, 3.3V, 5V) and adjustable (1.25V to 60V)
versions
±2% Output Tolerance Over Line and Load
Stable with 1μF Output Capacitor (Aluminum,
Tantalum or Ceramic)
Inherent Reverse-Current Protection (No diode
needed)
60V Reverse-Battery Protection
Applications
Low Current, High Voltage Regulators
Battery Powered Applications
Telecom and Datacom Applications
Automotive Application
Typical Application Circuit
VIN
4.5V to 60V
VOUT
2.5V/3.3V/5V
RT9068
CIN
0.18µF
VIN VOUT
SENSE
SHDN
COUT
1µF
GND
VIN
4.5V to 60V
CIN
0.18µF
RT9068
VIN VOUT
SENSE
SHDN
FB
GND
VOUT
1.25V to 25V
R1 COUT
1µF
R2
VIN
4.5V to 60V
RT9068
CIN
0.18µF
VIN VOUT
SENSE
SHDN
FB
GND
VOUT
1.25V to 60V
CCOMP R1
COUT
1µF
R2
RT9068-25/33/50
RT9068 (Adjustable Up to 25V Output) RT9068 (Adjustable Up to 60V Output)
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS9068-04 May 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1



Richtek Technology RT9068
RT9068
Ordering and Marking Information
Part No.
Output
Voltage
Package
Marking
Information
RT9068-
25GFP
RT9068-
25GSP
2.5V
MSOP-8
SOP-8
09=
RT906825GSP
RT9068-
33GFP
RT9068-
33GSP
3.3V
MSOP-8
SOP-8
0A=
RT906833GSP
RT9068-
50GFP
RT9068-
50GSP
MSOP-8
5V
SOP-8
0B=
RT906850GSP
RT9068
GFP
RT9068
GSP
MSOP-8
Adjustable
SOP-8
08=
RT9068GSP
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.
Pin Configurations
(TOP VIEW)
VOUT
SENSE
NC
NC
8
2 GND 7
3 96
45
VIN
GND
GND
SHDN
RT9068-25/33/50
MSOP-8
VOUT
SENSE
FB
NC
8
2 GND 7
3 96
45
RT9068
MSOP-8
VIN
GND
GND
SHDN
VOUT
SENSE
NC
NC
8
27
GND
36
9
45
VIN
GND
GND
SHDN
RT9068-25/33/50
SOP-8
VOUT
SENSE
FB
NC
8
27
GND
36
9
45
RT9068
SOP-8
VIN
GND
GND
SHDN
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
www.richtek.com
2
is a registered trademark of Richtek Technology Corporation.
DS9068-04 May 2016



Richtek Technology RT9068
RT9068
Pin Description
Pin No.
RT9068-
25/33/50GSP/GFP
RT9068GSP/GFP
11
2
3
--
4
5
6, 7, 9*
8
2
--
3
--
5
6, 7, 9*
8
Name
VOUT
SENSE
NC
FB
NC
SHDN
GND
VIN
Function
VOUT supplies power to the load. A minimum output
capacitor of 1F is required for stable operation.
Output Voltage Sense. For applications with VOUT 25V,
SENSE can be connected to the output voltage to optimize
the control loop compensation.
For applications with VOUT > 25V (adjustable versions only),
SENSE must be left unconnected. Control loop compensation
is optimized by adding a feed-forward capacitor in the
feedback resistor divider connected to FB (see Adjustable
Output Voltage and Compensation section).
No Internal Connection.
Feedback Input. Connect to the center tap of a resistor divider
for setting the output voltage. (Adjustable versions only)
No Internal Connection.
Shutdown Control Input (Active High). Connect SHDN high to
disable the output voltage and reduce the IC’s quiescent
current to 2A (typical). Connect SHDN low to enable the
output. SHDN is a high-voltage input (also able to withstand
reverse voltage) and can be connected directly to a
high-voltage input.
Ground. The exposed pad should be soldered to a large PCB
and connected to GND for maximum thermal dissipation.
Power Input. Bypass VIN with a 0.18F or larger capacitor
with adequate voltage rating.
* exposed pad
Function Block Diagram
VIN
SHDN
Error Amp
-
Reference
Current Limit
Over-
Temperature
Protection
RT9068-25/33/50 (Fixed Output)
VOUT
VIN
SHDN
SENSE
GND
Error Amp
-
Reference
Current Limit
Over-
Temperature
Protection
RT9068 (Adjustable Output)
VOUT
SENSE
FB
GND
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS9068-04 May 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3







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