RT9058
®
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Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
©
36V, 2μμ
μμ
μA I Q, 100mA Low Dropout Voltage Linear Regulator
Applications
Portable, Battery Powered Equipment
Ultra Low Power Microcontrollers
Notebook Computers
Features
2μμ
μμ
μA Quiescent Current
±±
±±
±2% Output Accuracy
100mA Output Current
3.5V to 36V Input Voltage Range
Dropout Voltage : 0.35V at 10mA/VCC 5V
0.5V at 10mA/VCC 3.5V
Fixed Output Voltage : 2.5V, 3V, 3.3V, 5V, 6V, 9V,
12V
Stable with Ceramic or Tantalum Capacitors
Current Limit Protection
Over Temperature Protection
SOT-23-3, SOT -89-3 Packages
RoHS Compliant and Halogen Free
Simplified Application Circuit
General Description
The RT9058 is a low dropout (LDO) linear voltage regulator
that features high input voltage, low dropout voltage, ultra-
low operating current, and miniaturized packaging. With
quiescent current as low as 2μA, the RT9058 is ideal for
battery-powered equipment.
The RT9058's stability requirements are easily met with
all types of output capacitors, including tiny ceramic
capacitors, over its wide input range (3.5V to 36V) and its
load current range (0mA to 100mA). The RT9058 offers
standard output voltages of 2.5V, 3V, 3.3V, 5V, 6V, 9V
and 12V.
Pin Configurations (TOP VIEW)
SOT-23-3
VCC VOUT
GND
2
3
SOT-23-3 (L-Type)
GND VOUT
VCC
2
3
SOT-89-3
VCC GND VOUT
23
Pin No.
SOT-23-3 SOT-23-3 (L-Type) SOT-89-3 Pin Name Pin Function
1 3 1 VCC Supply Voltage Input.
2 2 3 VOUT Output of the Regulator.
3 1 2 GND Ground.
Functional Pin Description
VCC
GND
VOUT
RT9058
VCC VOUT
CIN COUT
RT9058
2
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Function Block Diagram
Operation
The RT9058 is a high input voltage linear regulator
specifically designed to minimize external components.
The input voltage range is from 3.5V to 36V.
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 RT9058 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 Protection
The RT9058 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 4mA.
Once the junction temperature cools down by
approximately 20°C, the regulator will automatically
resume operation.
OCP
OTP
Bandgap
Reference
+
-
VCC
GND
VOUT
R1
R2
Ordering and Marking Information
Part Number Output
Voltage Package Marking
Information
RT9058-25GV
2.5V
SOT-23-3 00=
RT9058-25GVL SOT-23-3 (L) 2A=
RT9058-25GX SOT-89-3 00=
RT9058-30GV
3.0V
SOT-23-3 2H=
RT9058-30GVL SOT-23-3 (L) 2G=
RT9058-30GX SOT-89-3 10=
RT9058-33GV
3.3V
SOT-23-3 03=
RT9058-33GVL SOT-23-3 (L) 2B=
RT9058-33GX SOT-89-3 01=
RT9058-50GV
5.0V
SOT-23-3 06=
RT9058-50GVL SOT-23-3 (L) 2C=
RT9058-50GX SOT-89-3 02=
Part Number Output
Voltage Package Marking
Information
RT9058-60GV
6.0V
SOT-23-3 0R=
RT9058-60GVL SOT-23-3 (L) 2D=
RT9058-60GX SOT-89-3 0D=
RT9058-90GV
9.0V
SOT-23-3 0N=
RT9058-90GVL SOT-23-3 (L) 2E=
RT9058-90GX SOT-89-3 0C=
RT9058-C0GV
12.0V
SOT-23-3 0M=
RT9058-C0GVL SOT-23-3 (L) 2F=
RT9058-C0GX SOT-89-3 0B=
RT9058
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Absolute Maximum Ratings (Note 1)
VCC to GND --------------------------------------------------------------------------------------------------------------- −0.3V to 40V
VOUT to GND
RT9058-C0/RT9058-60/RT9058-90 ----------------------------------------------------------------------------------- −0.3V to 15V
RT9058-25/RT9058-30/RT9058-33/RT9058-50 --------------------------------------------------------------------- −0.3V to 6V
VOUT to VCC ------------------------------------------------------------------------------------------------------------- −40V to 0.3V
Power Dissipation, PD @ TA = 25°C
SOT-23-3 ------------------------------------------------------------------------------------------------------------------- 0.41W
SOT-89-3 ------------------------------------------------------------------------------------------------------------------- 0.6W
Package Thermal Resistance (Note 2)
SOT-23-3, θJA -------------------------------------------------------------------------------------------------------------- 243.3°C/W
SOT-89-3, θJA -------------------------------------------------------------------------------------------------------------- 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 36V
Junction Temperature Range ------------------------------------------------------------------------------------------- −40°C to 125°C
Ambient Temperature Range ------------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
((VOUT + 1V) < VCC < 36V, TA = 25°C, unless otherwise specified.)
Parameter Symbol Test Conditions Min Typ Max Unit
Output Voltage Range 2.5 -- 12 V
DC Output Accuracy ILOAD = 10mA 2 -- 2 %
Dropout Voltage ILOAD = 10mA -- 0.3 0.5 V
VCC Quiescent Current IQ ILOAD = 0mA, VOUT 5.5V, VCC = 12V -- 2 3.5 A
ILOAD = 0mA, VOUT > 5.5V, VCC = 12V -- 3.5 5
Line Regulation ILOAD = 10mA -- 0.2 0.5 %
Load Regulation 0 < ILOAD < 50mA, VCC = VOUT + 2V 0.5 -- 0.5 %
Output Current Limit VOUT = 0.5 x VOUT (normal) 115 175 300 mA
Power Supply Rejection Rate PSRR f = 100Hz, IOUT = 25mA -- 70 -- dB
f = 100kHz, IOUT = 25mA --- 40 --
Output Noise Voltage
BW = 10Hz 100kHz VON C
OUT = 1F --
27 x
VOUT -- VRMS
Thermal Shutdown Temperature ILOAD = 30mA -- 150 -- C
Thermal Shutdown Hysteresis -- 20 -- C
RT9058
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Typical Application Circuit
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. θJA is measured at TA = 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.
VCC
GND
VOUT
RT9058
VCC VOUT
1µF
CIN COUT
(Effective Capacitance 1µF)
RT9058
5
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Output Voltage vs. Te m pe rature
3.25
3.26
3.27
3.28
3.29
3.30
3.31
3.32
3.33
3.34
3.35
-50 -25 0 25 50 75 100 125
Temperature (°C)
Output Voltage (V)
VCC = 12V, VOUT = 3.3V
Load = 0mA
Load = 10mA
Load = 20mA
Load = 50mA
Typical Operating Characteristics
Output Voltage vs. Input Voltage
3.20
3.25
3.30
3.35
3.40
4 8 12 16 20 24 28 32 36
Input Voltage (V)
Output Voltage (V)
VCC = 5V to 36V, VOUT = 3.3V
Load = 0mA
Load = 10mA
Load = 20mA
Load = 50mA
Quiesce nt Current vs. Input Voltage
0.0
0.5
1.0
1.5
2.0
2.5
3.0
4 8 12 16 20 24 28 32 36
Input Voltage (V)
Quiescent Current (µA
)
VCC = 4V to 36V, VOUT = 3.3V
Output Voltage vs . Output Current
3.22
3.24
3.26
3.28
3.30
3.32
3.34
3.36
3.38
0 102030405060708090100
Output Current (mA)
Output Voltage (V)
VOUT = 3.3V
VCC = 24V VCC = 12V
VCC = 36V
Dropout Voltage vs. Te mpe rature
0.0
0.4
0.9
1.3
1.8
2.2
-50 -25 0 25 50 75 100 125
Temperature (°C)
Dropout Voltage (V)
VOUT = 3.3V
Load = 10mA
Load = 20mA
Load = 50mA
Quiescent Current v s. Temperature
1.0
1.5
2.0
2.5
3.0
-50 -25 0 25 50 75 100 125
Temperature (°C)
Quiescent Current (µA
)
VCC = 24V
VCC = 36V
VCC = 12V
VOUT = 3.3V
RT9058
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Load Transient Response
Time (25ms/Div)
VCC = 12V, VOUT = 3.3V, IOUT = 1mA to 50mA
VOUT
(50mV/Div)
IOUT
(50mA/Div)
Time (25μs/Div)
VOUT
(2V/Div)
IOUT
(50mA/Div)
VIN = 12V, VOUT = 3.3V, IOUT = 50mA
Power Up Response
VIN
(10V/Div)
Time (100μs/Div)
VCC
(5V/Div)
VOUT
(10mV/Div)
VCC = 10V to 14V, VOUT = 3.3V, IOUT = 100mA
Line Transient Response
Output Current Limit vs. Temperature
0
30
60
90
120
150
180
210
240
270
300
-50 -25 0 25 50 75 100 125
Temperature (°C)
Output Current Limit (mA
)
VOUT = 3.3V
VCC = 24V
VCC = 36V
VCC = 12V
PSRR
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10 100 1000 10000 100000
Frequency (Hz)
PSRR (dB)
IOUT = 25mA
IOUT = 10mA VCC = 12V, VOUT = 3.3V
Ground Current vs. Load Current
0
50
100
150
200
0.001 0.01 0.1 1 10 100 1000
Load Current (mA)
Ground Current (μA
)
VCC = 12V, VOUT = 3.3V
Rising, TA = 125°C
Falling, TA = 125°C
Rising, TA = 25°C
Falling, TA = 25°C
Rising, TA = −40°C
Falling, TA = −40°C
RT9058
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Figure 1. Derating Curve of Maximum Power Dissipation
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0 25 50 75 100 125
Ambient Temperature (°C)
Maximum Power Dissipation (W) 1
SOT-89-3 Four-Layer PCB
SOT-23-3
Applications Information
Like any low dropout linear regulator, the RT9058's external
input and output capacitors must be properly selected for
stability and performance. Use a 1μF or larger input
capacitor and place it close to the IC's VCC and GND pins.
Any output capacitor meeting the minimum 1mΩ ESR
(Equivalent Series Resistance) and effective capacitance
larger than 1μF requirement may be used. Place the output
capacitor close to the IC's VOUT and GND pins. Increasing
capacitance and decreasing ESR can improve the circuit's
PSRR and line transient response.
Thermal Considerations
For continuous operation, do not exceed absolute the
maximum junction temperature. The maximum power
dissipation depends on the thermal resistance of the IC
package, PCB layout, rate of surrounding airflow, and the
allowed difference between the junction and ambient
temperatures. The maximum power dissipation can be
calculated by the following formula :
PD(MAX) = (TJ(MAX) − TA) / θJA
where TJ(MAX) is the maximum junction temperature, TA is
the ambient temperature, and θJA is the junction to ambient
thermal resistance.
The recommended operating conditions specify a
maximum junction temperature is 125°C. The junction to
ambient thermal resistance, θJA, is layout dependent. On
a standard JEDEC 51-7 four-layer thermal test board ,
the thermal resistance, θJA, of the SOT-23-3 package is
243.3°C/W. For the SOT-89-3 package, the θJA, is
167.7°C/W. The maximum power dissipation at TA = 25°C
can be calculated by the following formula :
PD(MAX) = (125°C − 25°C) / (243.3°C/W) = 0.41W for
SOT-23-3 package
PD(MAX) = (125°C − 25°C) / (167.7°C/W) = 0.6W for
SOT-89-3 package
For a fixed TJ(MAX) of 125°C, the maximum power
dissipation depends on the operating ambient temperature
and the package's thermal resistance, θJA. The derating
curve in Figure 1 shows the effect of rising ambient
temperature on the maximum recommended power
dissipation.
RT9058
8
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Copyright 2016 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation.
A
bA1
B
D
C
e
H
L
SOT-23-3 Surface Mount Package
Dim ensions In Millimet ers Dimen sio ns In Inches
Symbol Min Max Min Max
A 0.889 1.295 0.035 0.051
A1 0.000 0.152 0.000 0.006
B 1.397 1.803 0.055 0.071
b 0.356 0.508 0.014 0.020
C 2.591 2.997 0.102 0.118
D 2.692 3.099 0.106 0.122
e 1.803 2.007 0.071 0.079
H 0.080 0.254 0.003 0.010
L 0.300 0.610 0.012 0.024
Outline Dimension
RT9058
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DS9058-01 February 2016 www.richtek.com
Richtek Technology Corporation
14F, No. 8, Tai Yuen 1st Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789
Richtek products are sold by description only. Richtek reserves the right to change the circuitry and/or specifications without notice at any time. Customers should
obtain the latest relevant information and data sheets before placing orders and should verify that such information is current and complete. Richtek cannot
assume responsibility for use of any circuitry other than circuitry entirely embodied in a Richtek product. Information furnished by Richtek is believed to be
accurate and reliable. However, no responsibility is assumed by Richtek or its subsidiaries for its use; nor for any infringements of patents or other rights of third
parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Richtek or its subsidiaries.
C1
B
b
b1
b
A
C
ee
D
D1
H
A
3-Lead SOT-89 Surface Mount Package
Dime nsions In M i llimeters Dime nsions In Inc hes
Symbol Min Max Min Max
A 1.397 1.600 0.055 0.063
b 0.356 0.483 0.014 0.019
B 2.388 2.591 0.094 0.102
b1 0.406 0.533 0.016 0.021
C 3.937 4.242 0.155 0.167
C1 0.787 1.194 0.031 0.047
D 4.394 4.597 0.173 0.181
D1 1.397 1.753 0.055 0.069
e 1.448 1.549 0.057 0.061
H 0.356 0.432 0.014 0.017
