®
RT9064
Ultra Low Power, 14V, 200mA Low-Dropout Linear Regulator
General Description
The RT9064 is a low-dropout (LDO) linear regulator that
features high input voltage, low dropout voltage, ultra-low
operating current, and miniaturized packaging. With
quiescent current as low as 2μA, the RT9064 is ideal for
battery-powered equipment.
The RT9064's stability requirements are easily met with
all types of output capacitors, including tiny ceramic
capacitors, over its wide input range (3.5V to 14V) and its
load current range (0mA to 200mA). The RT9064 offers
standard output voltages of 2.5V, 3.3V and 5V.
Features
μ
2μA Quiescent Current
±
2% Output Accuracy
200mA Output Current
14V Maximum Operating Input Voltage
Dropout Voltage : 0.4V at 100mA
Fixed Output Voltage : 2.5V/3.3V/5V
Stable with Ceramic or Tantalum Capacitor
Current Limit Protection
Over-Temperature Protection
SOT-23-3, SOT-89-3 Packages
RoHS Compliant and Halogen Free
Pin Configurations
(TOP VIEW)
GND
3
Applications
Portable, Battery Powered Equipment
Ultra Low Power Microcontrollers
2
Ordering and Marking Information
Part Number
RT9064-25GV
RT9064-25GVN
RT9064-25GX
2.5V
Output
Voltage
Package
SOT-23-3
SOT-23-3 (N)
SOT-89-3
SOT-23-3
3.3V
SOT-23-3 (N)
SOT-89-3
SOT-23-3
5.0V
SOT-23-3 (N)
SOT-89-3
Marking
Information
0D=
30=
04=
0E=
2Z=
05=
0F=
2Y=
06=
VCC
VOUT
SOT-23-3
VCC
3
2
RT9064-33GV
RT9064-33GVN
RT9064-33GX
RT9064-50GV
RT9064-50GVN
GND
VOUT
SOT-23-3 (N-Type)
2
3
RT9064-50GX
VCC
GND
VOUT
SOT-89-3
Simplified Application Circuit
V
CC
C
IN
RT9064
VCC
VOUT
GND
V
OUT
C
OUT
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9064-01 February 2016
www.richtek.com
1
RT9064
Functional Pin Description
Pin No.
SOT-23-3
1
2
3
SOT-23-3 (N-Type)
3
2
1
SOT-89-3
1
3
2
Pin Name
VCC
VOUT
GND
Pin Function
Supply Voltage Input.
Output of the Regulator.
Ground.
Function Block Diagram
VCC
VOUT
OCP
OTP
GND
-
+
R1
Bandgap
Reference
R2
Operation
The RT9064 is a high input voltage linear regulator
specifically designed to minimize external components.
The minimum required output capacitance for stable
operation is 1μF effective capacitance after consideration
of the temperature and voltage coefficient of the capacitor.
Output Transistor
The RT9064 includes a built-in low on-resistance
P-MOSFET output transistor for low dropout voltage
applications.
Error Amplifier
The Error Amplifier compares the output feedback voltage
from an internal feedback voltage divider to an internal
reference voltage and controls the P-MOSFET's gate
voltage to maintain output voltage regulation.
Current Limit
The RT9064 provides a current limit function to prevent
damage during output over-load or shorted-circuit
conditions. The output current is detected by an internal
sensing transistor.
Over-Temperature Protection
The over-temperature protection function will turn off the
P-MOSFET when the internal junction temperature
exceeds 150°C (typ.) and the output current exceeds
30mA. Once the junction temperature cools down by
approximately 20°C, the regulator will automatically
resume operation.
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
2
DS9064-01 February 2016
RT9064
Absolute Maximum Ratings
(Note 1)
−0.3V
to 15V
−14V
to 0.3V
−0.3V
to 6V
0.41W
0.59W
VCC to GND -----------------------------------------------------------------------------------------------------------------
VOUT to VCC ---------------------------------------------------------------------------------------------------------------
VOUT to GND ---------------------------------------------------------------------------------------------------------------
Power Dissipation, P
D
@ T
A
= 25°C
SOT-23-3 ---------------------------------------------------------------------------------------------------------------------
SOT-89-3 ---------------------------------------------------------------------------------------------------------------------
Package Thermal Resistance (Note 2)
SOT-23-3,
θ
JA
---------------------------------------------------------------------------------------------------------------- 243.3°C/W
SOT-89-3,
θ
JA
---------------------------------------------------------------------------------------------------------------- 167.7°C/W
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------------- 260°C
Junction Temperature ------------------------------------------------------------------------------------------------------ 150°C
Storage Temperature Range ---------------------------------------------------------------------------------------------
−65°C
to 150°C
ESD Susceptibility (Note 3)
HBM (Human Body Model) ----------------------------------------------------------------------------------------------- 2kV
MM (Machine Model) ------------------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions
(Note 4)
Supply Input Voltage, VCC ----------------------------------------------------------------------------------------------- 3.5V to 14V
Junction Temperature Range ---------------------------------------------------------------------------------------------
−40°C
to 125°C
Ambient Temperature Range ---------------------------------------------------------------------------------------------
−40°C
to 85°C
Electrical Characteristics
((V
OUT
+ 1V) < V
CC
< 14V, T
A
= 25°C, unless otherwise specified.)
Parameter
Output Voltage Range
DC Output Accuracy
Dropout Voltage
Quiescent Current
Line Regulation
Load Regulation
Output Current Limit
Power Supply Rejection
Ratio
Output Noise Voltage
Startup Time
OTP Threshold
OTP Hysteresis
Symbol
V
OUT
Test Conditions
Min
2.5
2
--
--
--
--
--
--
240
--
--
--
--
--
--
Typ
--
--
0.4
--
2
0.1
0.1
0.5
320
60
40
27 x
V
OUT
500
150
20
Max
5
2
1.2
1.5
4
0.2
0.3
1
400
--
--
--
--
--
--
Unit
V
%
V
A
%
%
mA
dB
V
RMS
s
C
C
I
LOAD
= 1mA, V
CC
= V
OUT
+ 0.5V
V
Drop
I
Q
V
LINE
V
LOAD
I
LIM
PSRR
V
ON
t
STR
I
LOAD
= 100mA, V
OUT
4.5V
I
LOAD
=100mA, V
OUT
< 4.5V
V
CC
= 5V, I
LOAD
= 0A
I
LOAD
= 1mA, 3.5V
V
CC
< 5.5V
I
LOAD
= 1mA, 5.5V
V
CC
14V
I
LOAD
= 1mA to 200mA
V
OUT
= 0.5 x V
OUT(Normal)
, V
CC
= 5V
f = 100Hz, I
LOAD
= 100mA
f = 10kHz, I
LOAD
= 100mA
BW = 10Hz to 100kHz , C
OUT
= 1F
V
OUT
= 3V, R
L
= 30
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9064-01 February 2016
www.richtek.com
3
RT9064
Note 1.
Stresses beyond those listed
“Absolute
Maximum Ratings” may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Note 2.
θ
JA
is measured at T
A
= 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7.
Note 3.
Devices are ESD sensitive. Handling precaution is recommended.
Note 4.
The device is not guaranteed to function outside its operating conditions.
Typical Application Circuit
RT9064
VCC
VOUT
GND
V
CC
C
IN
1µF
V
OUT
C
OUT
(Effective Capacitance
1µF)
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
4
DS9064-01 February 2016
RT9064
Typical Operating Characteristics
Output Voltage vs. Temperature
2.52
2.51
2.52
Output Voltage vs. Output Current
Output Voltage (V)
Output Voltage (V)
V
CC
= 12V, I
LOAD
= 0.1mA
V
CC
= 12V, I
LOAD
= 20mA
V
CC
= 12V, I
LOAD
= 50mA
2.51
2.50
2.49
2.48
2.47
2.50
2.49
2.48
2.47
2.46
-50
-25
0
25
50
75
100
125
V
CC
= 5V
V
CC
= 5V, I
LOAD
= 0.1mA
V
CC
= 5V, I
LOAD
= 20mA
V
CC
= 5V, I
LOAD
= 50mA
V
OUT
= 2.5V
V
CC
= 12V
V
OUT
= 2.5V
2.46
0
20
40
60
80
100 120 140 160 180 200
Temperature (°C)
Output Current (mA)
Output Voltage vs. Input Voltage
2.52
2.51
2.80
Quiescent Current vs. Temperature
Quiescent Current (µA)
2.54
Output Voltage (V)
2.50
2.49
2.48
2.47
2.28
I
LOAD
= 0mA
I
LOAD
= 0.1mA
I
LOAD
= 10mA
I
LOAD
= 20mA
I
LOAD
= 50mA
V
CC
= 5V
2.02
V
CC
= 12V
1.76
V
CC
= 5V to 13.2V, V
OUT
= 2.5V
2.46
5
6
7
8
9
10
11
12
13
14
1.50
-50
-25
0
25
50
75
V
OUT
= 2.5V
100
125
Input Voltage (V)
Temperature (°C)
Quiescent Current vs. Input Voltage
2.16
2.14
2.12
2.10
2.08
2.06
2.04
2.02
5
6
7
8
9
10
11
12
13
14
0.40
0.35
Dropout Voltage vs. Temperature
Quiescent Current (µA)
Dropout Voltage (V)
V
OUT
= 5V
0.30
0.25
0.20
0.15
V
OUT
= 2.5V
V
CC
= 5V, V
OUT
= 2.5V, I
LOAD
= 50mA
0.10
-50
-25
0
25
50
75
100
125
Input Voltage (V)
Temperature (°C)
Copyright
©
2016 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
DS9064-01 February 2016
www.richtek.com
5
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