RICHTEK RT9058

®
RT9058
36V, 2μ
μA IQ, 100mA Low Dropout Voltage Linear Regulator
General Description
Features
The RT9058 is a low dropout (LDO) linear voltage regulator
that features high input voltage, low dropout voltage, ultralow operating current, and miniaturized packaging. With
quiescent current as low as 2μA, the RT9058 is ideal for
battery-powered equipment.
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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.
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Applications
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2μ
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
Portable, Battery Powered Equipment
Ultra Low Power Microcontrollers
Notebook Computers
Pin Configurations
(TOP VIEW)
GND
VCC
3
3
2
VCC
2
3
GND
VOUT
2
GND
VOUT
SOT-23-3
VOUT
VCC
SOT-23-3 (L-Type)
SOT-89-3
Functional Pin Description
SOT-23-3
Pin No.
SOT-23-3 (L-Type)
SOT-89-3
1
3
1
VCC
Supply Voltage Input.
2
2
3
VOUT
Output of the Regulator.
3
1
2
GND
Ground.
Pin Name
Pin Function
Simplified Application Circuit
RT9058
VCC
VCC
VOUT
VOUT
GND
Copyright © 2013 Richtek Technology Corporation. All rights reserved.
DS9058-00 April 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1
RT9058
Ordering and Marking Information
Part Number
Output
Voltage
RT9058-25GV
Package
Marking
Information
Part Number
SOT-23-3
00=
RT9058-60GV
SOT-23-3 (L)
2A=
RT9058-60GVL
RT9058-25GX
SOT-89-3
00=
RT9058-30GV
SOT-23-3
Output
Voltage
Package
Marking
Information
SOT-23-3
0R=
SOT-23-3 (L)
2D=
RT9058-60GX
SOT-89-3
0D=
2H=
RT9058-90GV
SOT-23-3
0N=
SOT-23-3 (L)
2G=
RT9058-90GVL
SOT-23-3 (L)
2E=
RT9058-30GX
SOT-89-3
10=
RT9058-90GX
SOT-89-3
0C=
RT9058-33GV
SOT-23-3
03=
RT9058-C0GV
SOT-23-3
0M=
SOT-23-3 (L)
2B=
RT9058-C0GVL
SOT-23-3 (L)
2F=
RT9058-33GX
SOT-89-3
01=
RT9058-C0GX
SOT-89-3
0B=
RT9058-50GV
SOT-23-3
06=
SOT-23-3 (L)
2C=
SOT-89-3
02=
RT9058-25GVL
RT9058-30GVL
RT9058-33GVL
RT9058-50GVL
RT9058-50GX
2.5V
3.0V
3.3V
5.0V
6.0V
9.0V
12.0V
Function Block Diagram
VOUT
VCC
OCP
GND
Bandgap
Reference
R1
-
+
OTP
R2
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.
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.
Copyright © 2013 Richtek Technology Corporation. All rights reserved.
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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.
is a registered trademark of Richtek Technology Corporation.
DS9058-00 April 2013
RT9058
Absolute Maximum Ratings
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(Note 1)
VCC to GND --------------------------------------------------------------------------------------------------------------VOUT to GND
RT9058-C0/RT9058-60/RT9058-90 ----------------------------------------------------------------------------------RT9058-25/RT9058-30/RT9058-33/RT9058-50 --------------------------------------------------------------------VOUT to VCC ------------------------------------------------------------------------------------------------------------Power Dissipation, PD @ TA = 25°C
SOT-23-3 ------------------------------------------------------------------------------------------------------------------SOT-89-3 ------------------------------------------------------------------------------------------------------------------Package Thermal Resistance (Note 2)
SOT-23-3, θJA -------------------------------------------------------------------------------------------------------------SOT-89-3, θJA -------------------------------------------------------------------------------------------------------------Lead Temperature (Soldering, 10 sec.) -----------------------------------------------------------------------------Junction Temperature ---------------------------------------------------------------------------------------------------Storage Temperature Range ------------------------------------------------------------------------------------------ESD Susceptibility (Note 3)
HBM (Human Body Model) --------------------------------------------------------------------------------------------MM (Machine Model) ----------------------------------------------------------------------------------------------------
Recommended Operating Conditions
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−0.3V to 40V
−0.3V to 15V
−0.3V to 6V
−40V to 0.3V
0.41W
0.6W
243.3°C/W
167.7°C/W
260°C
150°C
−65°C to 150°C
2kV
200V
(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
Output Voltage Range
Min
Typ
Max
Unit
2.5
--
12
V
DC Output Accuracy
ILOAD = 10mA
−2
--
2
%
Dropout Voltage
ILOAD = 10mA
--
0.3
0.5
V
ILOAD = 0mA, VOUT ≤ 5.5V, VCC = 12V
--
2
3.5
ILOAD = 0mA, VOUT > 5.5V, VCC = 12V
--
3.5
5
Line Regulation
ILOAD = 10mA
--
0.2
0.5
%
Load Regulation
0 < ILOAD < 50mA, VCC = V OUT + 2V
−0.5
--
0.5
%
Output Current Limit
VOUT = 0.5 x VOUT (normal)
115
175
300
mA
f = 100Hz, IOUT = 25mA
--
−70
--
f = 100kHz, IOUT = 25mA
---
−40
--
COUT = 1μF
--
27 x
VOUT
--
μVRMS
ILOAD = 30mA
--
150
--
°C
--
20
--
°C
VCC Quiescent Current
IQ
Power Supply Rejection Rate
PSRR
Output Noise Voltage
BW = 10Hz − 100kHz
VON
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Copyright © 2013 Richtek Technology Corporation. All rights reserved.
DS9058-00 April 2013
μA
dB
is a registered trademark of Richtek Technology Corporation.
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RT9058
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.
Typical Application Circuit
RT9058
VCC
VCC
VOUT
1µF
1µF
VOUT
GND
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is a registered trademark of Richtek Technology Corporation.
DS9058-00 April 2013
RT9058
Typical Operating Characteristics
Output Voltage vs. Temperature
Output Voltage vs. Output Current
3.35
3.38
3.34
3.36
Output Voltage (V)
Output Voltage (V)
3.33
3.32
3.31
Load
Load
Load
Load
3.30
3.29
= 0mA
= 10mA
= 20mA
= 50mA
3.28
3.27
3.34
3.32
3.30
VCC = 36V
3.28
VCC = 24V
3.26
3.24
3.26
VCC = 12V, VOUT = 3.3V
3.25
VOUT = 3.3V
3.22
-50
-25
0
25
50
75
100
125
0
10
Temperature (°C)
Output Voltage vs. Input Voltage
30
40
50
60
70
80
90
100
Dropout Voltage vs. Temperature
2.2
Dropout Voltage (V)
Output Voltage (V)
20
Output Current (mA)
3.40
3.35
Load
Load
Load
Load
3.30
= 0mA
= 10mA
= 20mA
= 50mA
3.25
1.8
1.3
Load = 50mA
0.9
Load = 20mA
0.4
Load = 10mA
VOUT = 3.3V
VCC = 5V to 36V, VOUT = 3.3V
0.0
3.20
4
8
12
16
20
24
28
32
-50
36
-25
0
25
50
75
100
125
Temperature (°C)
Input Voltage (V)
Quiescent Current vs. Input Voltage
Quiescent Current vs. Temperature
3.0
3.0
2.5
Quiescent Current (µA)
Quiescent Current (µA)
VCC = 12V
2.0
1.5
1.0
0.5
2.5
VCC = 24V
VCC = 36V
VCC = 12V
2.0
1.5
VOUT = 3.3V
VCC = 4V to 36V, VOUT = 3.3V
1.0
0.0
4
8
12
16
20
24
28
32
Input Voltage (V)
Copyright © 2013 Richtek Technology Corporation. All rights reserved.
DS9058-00 April 2013
36
-50
-25
0
25
50
75
100
125
Temperature (°C)
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RT9058
PSRR
0
270
-10
240
-20
210
-30
PSRR (dB)
Output Current Limit (mA)
Output Current Limit vs. Temperature
300
VCC = 24V
VCC = 36V
VCC = 12V
180
150
120
-40
-50
-60
90
-70
60
-80
30
VOUT = 3.3V
0
-50
-25
0
25
50
75
100
125
IOUT = 25mA
-90
IOUT = 10mA
10
Load Transient Response
1000
10000
100000
Line Transient Response
IOUT
(50mA/Div)
V CC
(5V/Div)
VOUT
(50mV/Div)
VOUT
(10mV/Div)
VCC = 10V to 14V, VOUT = 3.3V, IOUT = 100mA
VCC = 12V, VOUT = 3.3V, IOUT = 1mA to 50mA
Ground Current (μA)
100
Frequency (Hz)
Temperature (°C)
200
VCC = 12V, VOUT = 3.3V
-100
Time (25ms/Div)
Time (100μs/Div)
Ground Current vs. Load Current
Power Up Response
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
150
100
VIN
(10V/Div)
VOUT
(2V/Div)
50
IOUT
(50mA/Div)
0
0.001
0.01
0.1
1
10
100
1000
VIN = 12V, VOUT = 3.3V, IOUT = 50mA
Time (25μs/Div)
Load Current (mA)
Copyright © 2013 Richtek Technology Corporation. All rights reserved.
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is a registered trademark of Richtek Technology Corporation.
DS9058-00 April 2013
RT9058
Applications Information
Any output capacitor meeting the minimum 1mΩ ESR
(Equivalent Series Resistance) 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 :
0.7
Maximum Power Dissipation (W)1
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.
Four-Layer PCB
SOT-89-3
0.6
0.5
SOT-23-3
0.4
0.3
0.2
0.1
0.0
0
25
50
75
100
125
Ambient Temperature (°C)
Figure 1. Derating Curve of Maximum Power Dissipation
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 T J(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.
Copyright © 2013 Richtek Technology Corporation. All rights reserved.
DS9058-00 April 2013
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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RT9058
Outline Dimension
H
D
L
C
B
e
A
A1
b
Dimensions In Millimeters
Dimensions 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
SOT-23-3 Surface Mount Package
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is a registered trademark of Richtek Technology Corporation.
DS9058-00 April 2013
RT9058
D
D1
A
B
C
C1
e
e
H
A
b
b1
b
Dimensions In Millimeters
Dimensions In Inches
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
3-Lead SOT-89 Surface Mount Package
Richtek Technology Corporation
5F, No. 20, Taiyuen 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.
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