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RT9013B-27GU5
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Richtek RT9013B-12GU5, RT9013B-15PQWA, RT9013B-15PU5, RT9013B-18PQWA, RT9013B-18PU5 Schematic [ru]

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RT9013B
300mA, Low Dropout, Low Noise Ultra-Fast Without Bypass Capacitor CMOS LDO Regulator
General Description
The RT9013B is a high-performance, 300mA LDO regulator,
offering extremely high PSRR and ultra-low dropout. The
RT9013B is Ideal for portable RF and wireless applications
with demanding performance and space requirements.
The RT9013B provides quiescent current to be as low as
25uA to extend the battery life. The RT9013B also works
with low-ESR ceramic capacitors, reducing the amount of
board space necessary for power applications, especially
for hand-held wireless devices.
The RT9013B consumes typical 0.7uA in shutdown mode
and has fast turn-on time to be less than 40us. The other
features include ultra-low dropout voltage, high output
accuracy, current limiting protection, and high ripple
rejection ratio. The RT9013B is available in the SC-70-5
and WDFN-6L 1.6x1.6 packages.
Ordering Information
RT9013B
-
Package Type U5 : SC-70-5 QWC : WDFN-6L 1.6x1.6 (W-Type)
Lead Plating System P : Pb Free G : Green (Halogen Free and Pb Free)
Features

Wide Operating Voltage Range : 2.2V to 5.5V


Low Dropout : 150mV at 300mA


Ultra-Low-Noise for RF Application


Ultra-Fast in Line/Load Transient Response


Current Limiting Protection


Thermal Shutdown Protection


High Power Supply Rejection Ratio


Only 1uF Output 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
Mini PCI & PCI-Express Cards
PCMCIA & New Cards
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
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
54
23
GND
VIN EN
NC
Note :
EN
VIN
SC-70-5
1
2
GND
7
3
6
5
4
NC NCGND VOUT
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.
WDFN-6L 1.6x1.6
DS9013B-02 April 2011 www.richtek.com
1
RT9013B
Typical Application Circuit
V
IN
1uF/X7R
Chip Enable
C
IN
R
pull_down
100k
VIN
RT9013B
EN
GND
Functional Pin Description
Pin No.
SC-70-5 WDFN-6L 1.6x1.6
1 3 VIN Supply Input.
2
7 (Exposed Pad)
2,
3 1 EN
4 5, 6 NC No Internal Connection.
5 4 VOUT Regulator Output.
Pin Name
GND
Common Ground. The exposed pad must be soldered to a large PCB
and connected to GND for maximum power dissipation.
Chip Enable (Active High). It is recommended to add a 100kΩ resistor
between the EN and GND.
VOUT
NC
V
OUT
C
OUT
1uF/X7R
Pin Function
Function Block Diagram
EN
POR OTP
Current
Limit
VIN
V
REF
­+
MOS
Driver
VOUT
GND
DS9013B-02 April 2011www.richtek.com
2
RT9013B
Absolute Maximum Ratings (Note 1)
Supply Input Voltage ------------------------------------------------------------------------------------------------------ 6V
EN Input Voltage ----------------------------------------------------------------------------------------------------------- 6V
Power Dissipation, P
SC-70-5 ---------------------------------------------------------------------------------------------------------------------- 0.3W
WDFN-6L 1.6x1.6 --------------------------------------------------------------------------------------------------------- 0.606W
Package Thermal Resistance (Note 2)
SC-70-5, θJA---------------------------------------------------------------------------------------------------------------- 333°C/W
WDFN-6L 1.6x1.6, θJA---------------------------------------------------------------------------------------------------- 165°C/W
Lead Temperature (Soldering, 10 sec.)------------------------------------------------------------------------------- 260°C
Junction Temperature ----------------------------------------------------------------------------------------------------- 150°CStorage 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 --------------------------------------------------------------------------------------------
Ambient Temperature Range --------------------------------------------------------------------------------------------
@ T
D
= 25°C
A
−40°C to 125°C
−40°C to 85°C
Electrical Characteristics
(V
= V
+ 0.5V, V
OUT
IN
Parameter Symbol Test Conditions Min Typ Max Unit
Input Voltage Range VIN 2.2 -- 5.5 V
Output Noise Voltage VON V
Ou tput V oltage Acc ur acy (Fixed Output Voltage)
Quiescent Current (Note 5) IQ V
Shutdown Current I
Current Limit I
Dropout Voltage (Note 6) V
Load Regulation (Note 7) (Fixed Output Voltage)
EN Threshold
Enable Pin Current IEN -- 0.1 1 uA
Power Supply Rejection Rate PSRR I
Line Regulation ΔV
Thermal Shutdown Temperature TSD -- 170 --
Thermal Shutdown Hysteresis ΔTSD -- 30 --
= VIN, C
EN
= C
IN
OUT
Logic-Low Voltage V
Logic-High Voltage V
= 1uF/X7R (Ceramic), T
= 1.5V -- 30 -- uV
OU T
ΔV
I
OUT
VEN = 0V -- 0.7 1.5 uA
SHDN
R
LIM
I
DROP
= 10mA −2 0 +2 %
OUT
= 5V, I
EN
LOAD
= 300mA -- 125 240 mV
OUT
1mA < I
ΔV
LOA D
2.2V ≤ V
1mA < I
2.7V ≤ V
0 -- 0.6
IL
1.6 -- 5.5
IH
= 100mA, f = 10kHz -- −50 -- dB
OUT
V
= (V
IN
LINE
I
OUT
= 1mA
= 25°C, unless otherwise specified)
A
= 0mA -- 25 50 uA
OUT
= 0Ω, 2.2V ≤ VIN < 5.5V 300 400 600 mA
< 300mA
OUT
< 2.7V
IN
< 300mA
OUT
≤ 5.5V
IN
+ 0.5) to 5.5V,
OU T
-- -- 0.6
-- -- 1
-- 0.01 0.2 %/V
RMS
%
V
°C
DS9013B-02 April 2011 www.richtek.com
3
RT9013B
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
is measured in the natural convection at T
JA
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
load condition (I
= 0mA). The total current drawn from the supply is the sum of the load current plus the ground pin
OUT
current.
Note 6. The dropout voltage is defined as V
-V
IN
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 300mA.
= 25°C on a low effective thermal conductivity single layer test board of
A
= IIN - I
Q
, which is measured when V
OUT
OUT
is V
OUT(NORMAL)
- 100mV.
under no
OUT
DS9013B-02 April 2011www.richtek.com
4
Typical Operating Characteristics
(C
= C
IN
Output Voltage (V)
= 1μ/X7R, unless otherwise specified)
OUT
Output Voltage vs. Temperature
1.60
VIN = 2.5V
1.58
1.56
1.54
1.52
1.50
1.48
1.46
1.44
1.42
1.40
-50 -25 0 25 50 75 100 125
Temperature
(°C)
RT9013B
Quiescent Current v s . Temperature
30
VIN = 2.5V
28
26
24
22
20
18
16
14
Quiescent Current (uA)
12
10
-50 -25 0 25 50 75 100 125
Temperature
(°C)
200
180
160
140
120
100
Dropout Voltage (mV)
(V)
EN Pin Voltage
Dropout Voltage vs. Load Current
125°C
V
OUT
−40°C
= 2.5V
80
60
40
20
0
0 50 100 150 200 250 300
Load Current (mA)
Start Up
V
= 2.5V, I
IN
RT9013B-15PU5
4
2
0
LOAD
= 75mA
25°C
4
2
(V)
0
EN Pin Voltage
2
1
(V)
0
Output Voltage
3.6
2.6
Deviation (V)
Input Voltage
EN Pin Shutdown Response
V
= 2.5V, I
IN
RT9013B-15PU5
LOAD
= 50mA
Time (100μs/Div)
Line Transient Response
V
= 2.6V to 3.6V, I
IN
LOAD
= 10mA
(V)
Output Voltage
1.0
0.5
0
Time (5μs/Div)
20
0
-20
Output Voltage
RT9013B-15PU5
Deviation (mV)
Time (100μs/Div)
DS9013B-02 April 2011 www.richtek.com
5
RT9013B
V
3.6
2.6
Deviation (V)
Input Voltage
20
0
-20
Output Voltage
RT9013B-15PU5
Deviation (mV)
V
300
200
100
0
Line Transient Response
= 2.6V to 3.6V, I
IN
Time (100μs/Div)
LOAD
= 100mA
Noise
= 3.0V (By Battery), I
IN
LOAD
= 10mA
V
IN
300
200
100
0
-100
Noise (μV/Div)
-200
-300 RT9013B-15PU5
V
IN
100
50
(mA)
0
Load Current
Noise
= 3.0V (By Battery), No Load
Time (10ms/Div)
Load Transient Response
= 2.5V, I
= 10mA to 100mA
LOAD
-100
Noise (μV/Div)
-200
-300 RT9013B-15PU5
Time (10ms/Div)
PSRR
20
V
= 2.5V to 2.6V
IN
10
0
-10
-20
-30
PSRR(dB)
-40
I
= 100mA
LOAD
-50
-60
I
= 10mA
LOAD
-70
10 100 1000 10000 100000 1000000
Frequency (Hz)
50
0
-50
Output Voltage
Deviation (mV)
RT9013B-15PU5
Time (100μs/Div)
DS9013B-02 April 2011www.richtek.com
6
Applications Information
RT9013B
Like any low-dropout regulator, the external capacitors used
with the RT9013B must be carefully selected for regulator
stability and performance. Using a capacitor whose value
is > 1uF / X7R on the RT9013B input and the amount of
capacitance can be increased without limit. The input
capacitor must be located at a distance of not more than
0.5 inch from the input pin of the IC and returned to a clean
analog ground. Any good quality ceramic can be used for
this capacitor. The capacitor with larger value and lower
ESR (equivalent series resistance) provides better PSRR
and line-transient response.
The output capacitor must meet both requirements for
minimum amount of capacitance and ESR in all LDOs
application. The RT9013B is designed specifically to work
with low ESR ceramic output capacitor in space-saving
and performance consideration. Using a ceramic capacitor
whose value is at least 1uF with ESR is > 20mΩ on the
RT9013B output ensures stability. The RT9013B still works
well with output capacitor of other types due to the wide
stable ESR range. Figure 1. shows the curves of allowable
ESR range as a function of load current for various output
capacitor values. Output capacitor of larger capacitance
can reduce noise and improve load transient response,
stability, and PSRR. The output capacitor should be located
not more than 0.5 inch from the VOUT pin of the RT9013B
and returned to a clean analog ground.
Enable
The RT9013B goes into sleep mode when the EN pin is in
a logic low condition. During this condition, the RT9013B
has an EN pin to turn on or turn off the regulator, When the
EN pin is logic hight the regulator will be turned on. The
supply current to 0.7uA typical. The EN pin may be directly
tied to VIN to keep the part on. The Enable input is CMOS
logic and cannot be left floating.
PSRR
The power supply rejection ratio (PSRR) is defined as the
gain from the input to output divided by the gain from the
supply to the output. The PSRR is found to be
⎛
log20 PSRR
×=
⎜
ΔSupply
⎝
⎞
Error ΔGain
⎟ ⎠
Note that in heavy load measuring, Δsupply will cause
Δtemperature. And Δtemperature will cause Δoutput
voltage. So the temperature effect is include in heavy load
PSRR measuring.
Current Limit
The RT9013B contains an independent current limiter, which
monitors and controls the pass transistor's gate voltage,
limiting the output current to 0.4A (typ.). The output can
be shorted to ground indefinitely without damaging the part.
Region of Stable C
100
10
ESR (Ω)
ESR (Ω)
OUT
OUT
1
0.1
ESR vs. Load Current
OUT
Unstable Range
Stable Range
Thermal Considerations
Thermal protection limits power dissipation in the RT9013B.
When the operation junction temperature exceeds 170°C,
the OTP circuit starts the thermal shutdown function and
turns the pass element off. The pass element will be turned
on again after the junction temperature cools by 30°C.
For continuous operation, do not exceed absolute
maximum operation junction temperature 125°C. The
0.01
Region of Stable C
Region of Stable C
VIN = 5V CIN = C
0.001
OUT
0 50 100 150 200 250 300
Unstable Range
= 1uF/X7R
Load Current (mA)
Figure 1
power dissipation definition in the device is calculated as
follows :
PD = (V
IN
− V
OUT
) x I
+ VIN x I
OUT
Q
The maximum power dissipation depends on the thermal
resistance of IC package, PCB layout, the rate of
surroundings airflow and temperature difference between
DS9013B-02 April 2011 www.richtek.com
7
RT9013B
junction to ambient. The maximum power dissipation can
be calculated by following formula :
P
Where T
temperature, T
D(MAX)
= ( T
J(MAX)
− TA ) /θ
J(MAX)
JA
is the maximum operation junction
is the ambient temperature and the θ
A
is
JA
the junction to ambient thermal resistance.
For recommended operating conditions specification of the
RT9013B, where T
is the maximum junction
J(MAX)
temperature of the die (125°C) and TA is the operated
ambient temperature. The junction to ambient thermal
resistance for SC-70-5 package is 333°C/W and
WDFN-6L 1.6x1.6 package is 165°C/W on the standard
JEDEC 51-3 single-layer thermal test board. The maximum
power dissipation at TA = 25°C can be calculated by
following formula :
P
= (125°C − 25°C) / (333°C/W) = 0.3W for SC-70-5
D(MAX)
packages
P
= (125°C − 25°C) / (165°C/W) = 0.606W for
D(MAX)
WDFN-6L 1.6x1.6 packages
The maximum power dissipation depends on operating
ambient temperature for fixed T
and thermal resistance
J(MAX)
θJA. For RT9013B packages, the Figure 2 of derating curves
allows the designer to see the effect of rising ambient
temperature on the maximum power allowed.
0.8
0.7
0.6
0.5
0.4
SC-70-5
0.3
0.2
WDFN-6L 1.6x1.6
Power Dissipation (W)
0.1
0
0 25 50 75 100 125
Ambient Temperature (°C)
Single Layer PCB
(°C)
Figure 2. Derating Curves for RT9013B Packages
DS9013B-02 April 2011www.richtek.com
8
Outline Dimension
RT9013B
H
D
L
C
b
A
e
Dimensions In Millimeters Dimensions In Inches
Symbol
Min Max Min Max
A 0.800 1.100 0.031 0.044
A1 0.000 0.100 0.000 0.004
B 1.150 1.350 0.045 0.054
b 0.150 0.400 0.006 0.016
C 1.800 2.450 0.071 0.096
D 1.800 2.250 0.071 0.089
B
A1
e 0.650 0.026
H 0.080 0.260 0.003 0.010
L 0.210 0.460 0.008 0.018
SC-70-5 Surface Mount Package
DS9013B-02 April 2011 www.richtek.com
9
RT9013B
D
E
A
A3
A1
D2
L
E2
SEE DETAIL A
1
e
b
2
1
1
2
DETAIL A
Pin #1 ID and Tie Bar Mark Options
Note : The configuration of the Pin #1 identifier is optional,
but must be located within the zone indicated.
Dimensions In Millimeters Dim ensions In Inches
Symbol
Min Max Min Max
A 0.700 0.800 0.028 0.031
A1 0.000 0.050 0.000 0.002
A3 0.175 0.250
b 0.200 0.300 0.008 0.012
D 1.550 1.650 0.061 0.065
D2 0.950 1.050 0.037 0.041
E 1.550 1.650 0.061 0.065
E2 0.550 0.650 0.022 0.026
e 0.500 0.020
L 0.190 0.290
Richtek Technology Corporation
Headquarter
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
0.007 0.010
0.007 0.011
W-Type 6L DFN 1.6x1.6 Package
Richtek Technology Corporation
Taipei Office (Marketing)
5F, No. 95, Minchiuan Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8862)86672399 Fax: (8862)86672377
Email: marketing@richtek.com
Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit design,
specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be guaranteed
by users when integrating Richtek products into any application. No legal responsibility for any said applications is assumed by Richtek.
DS9013B-02 April 2011www.richtek.com
10
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