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RT9068-33GSP

P1-P3P4-P6P7-P9P10-P12P13-P15
RT9068
®
DS9068-06 March 2017 www.richtek.com
1
©
Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
60V, 30
μμ
μμ
μA I
Q
, 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 : 30
μμ
μμ
μA Operating and 2
μμ
μμ
μA
Shutdown
Low Dropout Voltage : 300mV Maximum at 50mA
Fixed (2.5V, 3.3V, 5V) and Adjustable (1.25V to 60V)
Versions
±±
±±
±2% Output Tolerance
Stable with 1
μμ
μμ
μF 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
RT9068 (Adjustable Up to 25V Output)RT9068-25/33/50 RT9068 (Adjustable Up to 60V Output)
Typical Application Circuit
VIN
GND
VOUT
RT9068
V
IN
V
OUT
4.5V to 60V
C
IN
0.18µF
SHDN
C
OUT
1µF
SENSE
2.5V/3.3V/5V
VIN
GND
VOUT
RT9068
V
IN
V
OUT
4.5V to 60V
C
IN
0.18µF
SHDN
C
OUT
1µF
SENSE
1.25V to 25V
R1
R2
FB
VIN
GND
VOUT
RT9068
V
IN
V
OUT
4.5V to 60V
C
IN
0.18µF
SHDN
C
OUT
1µF
SENSE
1.25V to 60V
R1
R2
FB
C
COMP
RT9068
2
DS9068-06 March 2017www.richtek.com
©
Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Pin Configuration
Part No.
Output
Voltage
Package
Marking
Information
RT9068-
25GFP
2.5V
MSOP-8 09=
RT9068-
25GSP
SOP-8 Exposed
Pad–Option 1)
RT906825GSP
RT9068-
33GFP
3.3V
MSOP-8 0A=
RT9068-
33GSP
SOP-8 Exposed
Pad–Option 1)
RT906833GSP
RT9068-
50GFP
5V
MSOP-8 0B=
RT9068-
50GSP
SOP-8 Exposed
Pad–Option 1)
RT906850GSP
RT9068
GFP
Adjustable
MSOP-8 08=
RT9068
GSP
SOP-8 Exposed
Pad–Option 1)
RT9068GSP
Ordering and Marking Information
RT9068-25/33/50
MSOP-8
VOUT
VIN
GND
GND
SHDN
NC
SENSE
NC
5
6
7
8
4
3
2
GND
9
VOUT
VIN
GND
GND
SHDN
NC
SENSE
FB
5
6
7
8
4
3
2
GND
9
RT9068
MSOP-8
VOUT
SENSE
NC
NC
VIN
GND
SHDN
GND
GND
2
3
4
5
6
7
8
9
RT9068-25/33/50
SOP-8
VOUT
SENSE
FB
NC
VIN
GND
SHDN
GND
GND
2
3
4
5
6
7
8
9
RT9068
SOP-8
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.
(TOP VIEW)
RT9068
3
DS9068-06 March 2017 www.richtek.com
©
Copyright 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
Pin Description
Pin No.
Name Function
RT9068-
25/33/50GSP/GFP
RT9068GSP/GFP
1 1 VOUT
VOUT supplies power to the load. A minimum output
capacitor of 1F is required for stable operation.
2 2 SENSE
Output voltage sense. For applications with V
OUT
25V,
SENSE can be connected to the output voltage to optimize
the control loop compensation.
For applications with V
OUT
> 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).
3 -- NC No internal connection.
-- 3 FB
Feedback input. Connect to the center tap of a resistor divider
for setting the output voltage. (Adjustable versions only)
4 -- NC No internal connection.
5 5 SHDN
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.
6, 7, 9* 6, 7, 9* GND
Ground. The exposed pad should be soldered to a large PCB
and connected to GND for maximum thermal dissipation.
8 8 VIN
Power input. Bypass VIN with a 0.18F or larger capacitor
with adequate voltage rating.
* exposed pad
Functional Block Diagram
RT9068-25/33/50 (Fixed Output) RT9068 (Adjustable Output)
Current Limit
Over-
Temperature
Protection
+
-
VIN
VOUT
SENSE
GND
Reference
SHDN
Error Amp
+
-
VIN
VOUT
SENSE
GND
Reference
SHDN
Error Amp
FB
Current Limit
Over-
Temperature
Protection
P1-P3P4-P6P7-P9P10-P12P13-P15

RT9068-33GSP

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IC REG LINEAR 3.3V 50MA 8SOP-EP
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