RT9013A
120mA, Low Dropout, Low Noise Ultra-Fast Without
Bypass Capacitor CMOS LDO Regulator
General Description
The RT9013A is a high-performance, 120mA LDO regulator,
offering extremely high PSRR and ultra-low dropout. The
chip is ideal for portable RF and wireless applications with
demanding performance and space requirements.
The RT9013A provides quiescent current to be as low as
25uA to extend the battery life. The RT9013A also works
with low-ESR ceramic capacitors, reducing the amount of
board space necessary for power applications, especially
for hand-held wireless devices.
The RT9013A consumes typical 0.7uA in shutdown mode
and has fast turn-on time less than 40us. The other features
include ultra-low dropout voltage, high output accuracy,
current limiting protection, and high ripple rejection ratio.
Available in the SC-70-5 and SC-82 packages.
Features
Wide Operating Voltage Ranges : 2.2V to 5.5V
Low Dropout : 60mV at 120mA
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 1uF Capacitor Required for Stability
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
RT9013A
-
Package Type
U5 : SC-70-5
Y : SC-82
Lead Plating System
P : Pb Free
G : Green (Halogen Free and Pb Free)
Fixed Output Voltage
12 : 1.2V
13 : 1.3V
:
34 : 3.4V
35 : 3.5V
1B : 1.25V
1H : 1.85V
2H : 2.85V
Pin Configurations
(TOP VIEW)
VOUT
5
2
VIN
GND
NC
4
3
EN
VIN
4
VOUT
3
2
EN
GND
SC-70-5
SC-82
Note
: Pin2 of SC-82 is wider than other pins.
Note :
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
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.
DS9013A-02 April 2011
www.richtek.com
1
RT9013A
Typical Application Circuit
V
IN
C
IN
1uF/X7R
Chip Enable
EN
R
pull_down
100k
GND
NC
VIN
VOUT
V
OUT
C
OUT
1uF/X7R
RT9013A
Functional Pin Description
Pin No.
SC-70-5
1
2
3
4
5
SC-82
4
2
1
--
3
Pin Name
VIN
GND
EN
NC
VOUT
Supply Input
Common Ground
Enable Input Logic, Active High. When the EN goes to a logic low, the
device will be shutdown mode.
No Internal Connection
Regulator Output
Pin Function
Function Block Diagram
EN
POR
OTP
V
REF
Current
Limit
VIN
-
+
MOS
Driver
VOUT
GND
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2
DS9013A-02 April 2011
RT9013A
Absolute Maximum Ratings
(Note 1)
6V
6V
0.3W
333°C/W
260°C
Supply Input Voltage ------------------------------------------------------------------------------------------------------
EN Input Voltage -----------------------------------------------------------------------------------------------------------
Power Dissipation, P
D
@ T
A
= 25°C
SC-70-5/SC-82 -------------------------------------------------------------------------------------------------------------
Package Thermal Resistance (Note 2)
SC-70-5/SC-82,
θ
JA
-------------------------------------------------------------------------------------------------------
Lead Temperature (Soldering, 10 sec.) -------------------------------------------------------------------------------
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
= 1uF (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
= 1uF,
I
OUT
= 0mA
I
OUT
= 10mA
V
EN
= 5V, I
OUT
= 0mA
V
EN
= 0V
R
LOAD
= 0Ω, 2.2V
≤
V
IN
< 5.5V
I
OUT
= 120mA, 2.2V
≤
V
OUT
< 3V
I
OUT
= 120mA, 3V
≤
V
OUT
≤
5.5V
1mA < I
OUT
< 120mA
2.2V
≤
V
IN
< 2.7V
1mA < I
OUT
< 120mA
2.7V
≤
V
IN
≤
5.5V
Min
2.2
--
−2
--
--
130
--
--
--
--
0
1.6
--
Typ
--
30
0
25
0.7
200
70
60
--
--
--
--
0.1
−50
0.01
Max
5.5
--
+2
50
1.5
300
140
140
0.6
Unit
V
uV
RMS
%
uA
uA
mA
mV
Load Regulation
(Note 7)
(Fixed Output Voltage)
ΔV
LOAD
%
1
0.6
5.5
1
--
0.2
V
uA
dB
%/V
EN Threshold
Logic-Low Voltage V
IL
Logic-High Voltage V
IH
I
EN
PSRR
ΔV
LINE
f = 10kHz, I
OUT
= 100mA
V
IN
= (V
OUT
+0.5) to 5.5V,
I
OUT
= 1mA
Enable Pin Current
Power Supply Rejection Rate
Line Regulation
--
--
To be continued
DS9013A-02 April 2011
www.richtek.com
3
RT9013A
Parameter
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
Symbol
T
SD
ΔT
SD
Test Conditions
Min
--
--
Typ
170
30
Max
--
--
Unit
°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.
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 120mA.
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DS9013A-02 April 2011
RT9013A
Typical Operating Characteristics
(C
IN
= C
OUT
= 1u/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
100
90
80
EN Pin Shutdown Response
EN Pin Voltage
(V)
Output Voltage
(V)
V
IN
= 2.5V, I
LOAD
= 50mA
4 V
OUT
= 1.5V
2
0
Dropout Voltage (mV)
70
60
50
40
30
20
10
0
0
20
40
60
80
125°C
25°C
−40°C
2
1
0
V
OUT
= 2.5V
100
120
Time (100us/Div)
Load Current (mA)
Start Up
EN Pin Voltage
(V)
Input Voltage
Deviation (V)
4
2
0
V
IN
= 2.5V, I
LOAD
= 75mA
V
OUT
= 1.5V
Line Transient Response
V
IN
= 2.6V to 3.6V, I
LOAD
= 10mA
V
OUT
= 1.5V
3.6
2.6
Output Voltage
(V)
1.0
0.5
0
Output Voltage
Deviation (mV)
20
0
-20
Time (5us/Div)
Time (100us/Div)
DS9013A-02 April 2011
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