RT9013
500mA, Low Dropout, Low Noise Ultra-Fast Without
Bypass Capacitor CMOS LDO Regulator
General Description
The RT9013 is a high-performance, 500mA LDO regulator,
offering extremely high PSRR and ultra-low dropout. Ideal
for portable RF and wireless applications with demanding
performance and space requirements.
The RT9013 quiescent current as low as 25μA, further
prolonging the battery life. The RT9013 also works with
low-ESR ceramic capacitors, reducing the amount of board
space necessary for power applications, critical in hand-
held wireless devices.
The RT9013 consumes typical 0.7μA in shutdown mode
and has fast turn-on time less than 40μs. The other features
include ultra-low dropout voltage, high output accuracy,
current limiting protection, and high ripple rejection ratio.
Available in the SC-82, SOT-23-5, SC-70-5 and WDFN-6L
2x2 package.
Features
Wide Operating Voltage Ranges : 2.2V to 5.5V
Low Dropout : 250mV at 500mA
Ultra-Low-Noise for RF Application
Ultra-Fast Response in Line/Load Transient
Current Limiting Protection
Thermal Shutdown Protection
High Power Supply Rejection Ratio
Output Only 1μF Capacitor Required for Stability
μ
TTL-Logic-Controlled Shutdown Input
RoHS Compliant and 100% Lead (Pb)-Free
Applications
CDMA/GSM Cellular Handsets
Portable Information Appliances
Laptop, Palmtops, Notebook Computers
Hand-Held Instruments
Mini PCI & PCI-Express Cards
PCMCIA & New Cards
Ordering Information
RT9013
-
Package Type
Y : SC-82
B : SOT-23-5
U5 : SC-70-5
QW : WDFN-6L 2x2 (W-Type)
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Fixed Output Voltage
12 : 1.2V
13 : 1.3V
15 : 1.5V
16 : 1.6V
:
32 : 3.2V
33 : 3.3V
1B : 1.25V
1H : 1.85V
2H : 2.85V
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
Pin Configurations
(TOP VIEW)
VIN
4
VOUT
3
2
EN
GND
SC-82
VOUT
5
2
NC
4
3
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.
VIN GND EN
SOT-23-5 / SC-70-5
EN
GND
VIN
1
2
3
6
5
4
7
NC
NC
VOUT
WDFN-6L 2x2
DS9013-10 April 2011
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1
GND
RT9013
Typical Application Circuit
V
IN
VIN
VOUT
V
OUT
C
OUT
1µF/X7R
C
IN
1µF/X7R
RT9013
EN
NC
GND
Chip Enable
R
pull_down
100k
Functional Pin Description
Pin Number
SC-82
3
--
2
1
4
SOT-23-5 /
SC-70-5
5
4
2
3
1
Pin Name
WDFN-6L 2x2
4
5, 6
2,
7 (Exposed
Pad)
1
3
VOUT
NC
GND
EN
VIN
Regulator Output.
No Internal Connection.
Common Ground. The exposed pad must be soldered to a
large PCB and connected to GND for maximum power
dissipation.
Enable Input Logic, Active High. When the EN goes to a
logic low, the device will be shutdown mode.
Supply Input.
Pin Function
Function Block Diagram
POR
OTP
V
REF
Current
Limit
VIN
-
+
EN
MOS
Driver
VOUT
GND
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2
DS9013-10 April 2011
RT9013
Absolute Maximum Ratings
(Note 1)
6V
6V
0.4W
0.3W
0.606W
Supply Input Voltage ------------------------------------------------------------------------------------------------------
EN Input Voltage -----------------------------------------------------------------------------------------------------------
Power Dissipation, P
D
@ T
A
= 25°C
SOT-23-5 --------------------------------------------------------------------------------------------------------------------
SC-70-5/ SC-82 ------------------------------------------------------------------------------------------------------------
WDFN-6L 2x2 --------------------------------------------------------------------------------------------------------------
Package Thermal Resistance (Note 2)
SOT-23-5,
θ
JA
--------------------------------------------------------------------------------------------------------------- 250°C/W
SOT-23-5,
θ
JC
-------------------------------------------------------------------------------------------------------------- 25°C/W
SC-70-5/ SC-82,
θ
JA
------------------------------------------------------------------------------------------------------ 333°C/W
WDFN-6L 2x2,
θ
JA
--------------------------------------------------------------------------------------------------------- 165°C/W
WDFN-6L 2x2,
θ
JC
--------------------------------------------------------------------------------------------------------- 20°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 -------------------------------------------------------------------------------------------------------------------------- 2kV
MM ---------------------------------------------------------------------------------------------------------------------------- 200V
Recommended Operating Conditions
(Note 4)
Supply Input Voltage ------------------------------------------------------------------------------------------------------ 2.2V to 5.5V
Junction Temperature Range --------------------------------------------------------------------------------------------
−40°C
to 125°C
Ambient Temperature Range --------------------------------------------------------------------------------------------
−40°C
to 85°C
Electrical Characteristics
(V
IN
= V
OUT
+ 0.5V, V
EN
= V
IN
, C
IN
= C
OUT
= 1μF (Ceramic, X7R), T
A
= 25°C unless otherwise specified)
Parameter
Input Voltage Range
Output Noise Voltage
Output Voltage Accuracy
(Fixed Output Voltage)
Quiescent Current
Shutdown Current
Current Limit
Dropout Voltage
(Note 6)
(Note 5)
Symbol
V
IN
V
ON
ΔV
OUT
I
Q
I
SHDN
I
LIM
V
DROP
Test Conditions
V
OUT
= 1.5V, C
OUT
= 1μF, I
OUT
=
0mA
I
OUT
= 10mA
V
EN
= 5V, I
OUT
= 0mA
V
EN
= 0V
R
LOAD
= 0Ω, 2.2V
≤
V
IN
< 2.6V
R
LOAD
= 0Ω, 2.7V
≤
V
IN
≤
5.5V
I
OUT
= 400mA, 2.2V
≤
V
IN
< 2.7V
I
OUT
= 500mA, 2.7V
≤
V
IN
≤
5.5V
1mA < I
OUT
< 400mA
2.2V
≤
V
IN
< 2.7V
1mA < I
OUT
< 500mA
2.7V
≤
V
IN
≤
5.5V
Min
2.2
--
−2
--
--
0.4
0.5
--
--
--
--
Typ
--
30
0
25
0.7
0.5
0.6
160
250
--
--
Max
5.5
--
+2
50
1.5
0.85
0.85
320
400
0.6
Unit
V
μV
RMS
%
μA
μA
A
A
mV
Load Regulation
(Note 7)
(Fixed Output Voltage)
ΔV
LOAD
%
1
To be continued
DS9013-10 April 2011
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RT9013
Parameter
EN Threshold Voltage
Enable Pin Current
Power Supply Rejection Rate
Line Regulation
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Symbol
Logic-Low V
IL
Logic-High V
IH
I
EN
PSRR
ΔV
LINE
T
SD
ΔT
SD
I
OUT
= 100mA, f = 10kHz
V
IN
= (V
OUT
+0.5) to 5.5V,
I
OUT
= 1mA
Test Conditions
Min
0
1.6
--
--
--
--
--
Typ
--
--
0.1
−50
0.01
170
30
Max
0.6
5.5
1
--
0.2
--
--
Unit
V
μA
dB
%/V
°C
Note 1.
Stresses listed as the above
“Absolute
Maximum Ratings” may cause permanent damage to the device. These are for
stress ratings. 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 for extended periods may
remain possibility to affect device reliability.
Note 2.
θ
JA
is measured in the natural convection at T
A
= 25°C on a low effective thermal conductivity test board of JEDEC 51-3
thermal measurement standard. The case position of
θ
JC
is on the exposed pad for the package.
Note 3.
Devices are ESD sensitive. Handling precaution is recommended.
Note 4.
The device is not guaranteed to function outside its operating conditions.
Note 5.
Quiescent, or ground current, is the difference between input and output currents. It is defined by I
Q
= I
IN
- I
OUT
under no
load condition (I
OUT
= 0mA). The total current drawn from the supply is the sum of the load current plus the ground pin
current.
Note 6.
The dropout voltage is defined as V
IN
-V
OUT
, which is measured when V
OUT
is V
OUT(NORMAL)
- 100mV.
Note 7.
Regulation is measured at constant junction temperature by using a 2ms current pulse. Devices are tested for load
regulation in the load range from 10mA to 500mA.
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DS9013-10 April 2011
RT9013
Typical Operating Characteristics
(C
IN
= C
OUT
= 1μ/X7R, unless otherwise specified)
Output Voltage vs. Temperature
1.60
1.58
1.56
Quiescent Current vs. Temperature
30
28
V
IN
= 2.5V
V
IN
= 2.5V
Quiescent Current (uA)
26
24
22
20
18
16
14
12
10
Output Voltage (V)
1.54
1.52
1.50
1.48
1.46
1.44
1.42
1.40
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
Temperature
(°C)
Temperature
(°C)
Dropout Voltage vs. Load Current
350
300
Dropout Voltage vs. Load Current
350
RT9013-33PQW
T
J
= 125°C
RT9013-25PQW
T
J
= 125°C
300
Dropout Voltage (mV)
250
Dropout Voltage (mV)
250
200
150
100
50
0
T
J
= 25°C
200
150
T
J
= 25°C
T
J
= -40°C
100
50
0
0
50
100 150 200 250 300 350 400 450 500
T
J
= -40°C
0
50
100 150 200 250 300 350 400 450 500
Load Current (mA)
Load Current (mA)
EN Pin Shutdown Response
EN Pin Voltage
(V)
EN Pin Voltage
(V)
V
IN
= 2.5V, I
LOAD
= 50mA
4 RT9013-15PQW
2
0
4
2
0
Start Up
V
IN
= 2.5V, I
LOAD
= 75mA
RT9013-15PQW
Output Voltage
(V)
Output Voltage
(V)
2
1
0
1.0
0.5
0
Time (100μs/Div)
Time (5μs/Div)
DS9013-10 April 2011
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