Richtek RT9013A-15GY, RT9013A-15PU5, RT9013A-18GY, RT9013A-18PU5, RT9013A-25GY Schematic [ru]
...
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.
Ordering Information
RT9013A
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.
-
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
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
Pin Configurations
(TOP VIEW)
VOUT
54
VIN EN
SC-70-5
Note : Pin2 of SC-82 is wider than other pins.
NC
23
GND
VIN
43
EN
VOUT
2
GND
SC-82
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
DS9013A-02 April 2011 www.richtek.com
1
RT9013A
Typical Application Circuit
V
IN
1uF/X7R
Chip Enable
Functional Pin Description
Pi n No.
SC-70-5 SC-82
1 4 VIN Supply Input
2 2 GND Common Ground
3 1 EN
4 -- NC No Interna l Co nnection
5 3 VOUT Regulator Output
Pin Name Pin Function
C
IN
R
pull_down
100k
VIN
EN
RT9013A
GND
VOUT
NC
C
OUT
1uF/X7R
V
OUT
Enable Input Log ic, Active High. When the EN goes to a logic low, the
device will be shutdown mode.
Function Block Diagram
EN
POR
OTP
V
REF
Current
Limit
VIN
+
MOS
Driver
VOUT
GND
DS9013A-02 April 2011www.richtek.com
2
RT9013A
Absolute Maximum Ratings (Note 1)
Supply Input Voltage ------------------------------------------------------------------------------------------------------ 6V
EN Input Voltage ----------------------------------------------------------------------------------------------------------- 6V
Power Dissipation, P
SC-70-5/SC-82 ------------------------------------------------------------------------------------------------------------- 0.3W
Package Thermal Resistance (Note 2)
SC-70-5/SC-82, θJA------------------------------------------------------------------------------------------------------- 333°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 --------------------------------------------------------------------------------------------
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
Output Voltage Accuracy
(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
= VIN, C
EN
= C
IN
OUT
Logic-Low Voltage V
Logic-High Voltage V
= 1uF (Ceramic, X7R), T
V
= 1.5V, C
OUT
= 0mA
I
OUT
ΔV
I
OUT
VEN = 0V -- 0.7 1.5 uA
SHDN
R
LIM
DROP
= 10mA −2 0 +2 %
OUT
= 5V, I
EN
= 0Ω, 2.2V ≤ VIN < 5.5V 130 200 300 mA
LOAD
I
= 120mA, 2.2V ≤ V
OUT
= 120mA, 3V ≤ V
I
OUT
1mA < I
LOAD
1mA < I
ΔV
2.2V ≤ V
2.7V ≤ V
0 -- 0.6
IL
1.6 -- 5.5
IH
= 25°C, unless otherwise specified)
A
= 1uF,
OUT
= 0mA -- 25 50 uA
OUT
< 3V -- 70 140
OUT
≤ 5.5V -- 60 140
OUT
< 120mA
OUT
< 2.7V
IN
< 120mA
OUT
≤ 5.5V
IN
-- 30 -- uV
-- -- 0.6
-- -- 1
RMS
mV
%
V
Power Supply Rejection Rate PSRR f = 10kHz, I
= (V
V
IN
Line Regulation ΔV
LINE
I
OUT
OUT
= 1mA
= 100mA -- −50 -- dB
OUT
+0.5) to 5.5V,
-- 0.01 0.2 %/V
To be continued
DS9013A-02 April 2011 www.richtek.com
3
RT9013A
Parameter Symbol Test Conditions Min Typ Max Unit
Thermal Shutdown Temperature TSD -- 170 --
°C
Thermal Shutdown Hysteresis ΔTSD -- 30 --
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
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 120mA.
= 25°C on a low effective thermal conductivity test board of JEDEC 51-3
A
= IIN - I
Q
, which is measured when V
OUT
OUT
is V
OUT(NORMAL)
- 100mV.
under no
OUT
DS9013A-02 April 2011www.richtek.com
4
Typical Operating Characteristics
(C
= C
IN
Output Voltage (V)
= 1u/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)
RT9013A
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)
100
Dropout Voltage (mV)
(V)
EN Pin Voltage
Dropout Voltage vs. Load Current
90
80
70
60
50
40
30
20
10
0
0 20 40 60 80 100 120
V
OUT
125°C
= 2.5V
Load Current (mA)
Start Up
V
= 2.5V, I
IN
V
= 1.5V
OUT
4
2
0
LOAD
= 75mA
25°C
−40°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
IN
V
OUT
= 2.5V, I
= 1.5V
LOAD
= 50mA
Time (100us/Div)
Line Transient Response
V
= 2.6V to 3.6V, I
IN
V
= 1.5V
OUT
LOAD
= 10mA
(V)
Output Voltage
1.0
0.5
0
Time (5us/Div)
20
0
-20
Output Voltage
Deviation (mV)
Time (100us/Div)
DS9013A-02 April 2011 www.richtek.com
5
RT9013A
V
V
3.6
2.6
Deviation (V)
Input Voltage
20
0
-20
Output Voltage
Deviation (mV)
V
V
300
200
100
0
Line Transient Response
= 2.6V to 3.6V, I
IN
= 1.5V
OUT
Time (100us/Div)
LOAD
= 100mA
Noise
= 3.0V (By Battery), I
IN
OUT
= 1.5V
LOAD
= 10mA
V
IN
V
OUT
300
200
100
0
-100
Noise (μV/Div)
-200
-300
V
IN
V
OUT
100
50
(mA)
0
Load Current
Noise
= 3.0V (By Battery), No Load
= 1.5V
Time (10ms/Div)
Load Transient Response
= 2.5V, I
= 1.5V
= 10mA to 100mA
LOAD
-100
Noise (μV/Div)
-200
-300
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)
Time (100us/Div)
DS9013A-02 April 2011www.richtek.com
6
Applications Information
RT9013A
Like any low-dropout regulator, the external capacitors used
with the RT9013A must be carefully selected for regulator
stability and performance. Using a capacitor whose value
is > 1uF / X7R on the RT9013A input and the amount of
capacitance can be increased without limit. The input
capacitor must be located 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 RT9013A 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
RT9013A output ensures stability. The RT9013A 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 RT9013A
and returned to a clean analog ground.
Region of Stable C
100
10
ESR (Ω)
OUT
1
0.1
0.01
Region of Stable C
VIN = 5V
C
= C
IN
0.001
0 100 200 300 400 500
OUT
= 1uF/X7R
Load Current (mA)
ESR vs. Load Current
OUT
Unstable Range
Stable Range
Unstable Range
Figure 1
Enable
The RT9013A goes into sleep mode when the EN pin is in
a logic low condition. During this condition, the RT9013A
has an EN pin to turn on or turn off 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 when heavy load measuring, Δsupply will cause
Δtemperature. And Δtemperature will cause Δoutput
voltage. So the heavy load PSRR measuring is include
temperature effect.
Current limit
The RT9013A contains an independent current limiter, which
monitors and controls the pass transistor's gate voltage,
limiting the output current to 0.2A (typ.). The output can
be shorted to ground indefinitely without damaging the part.
Thermal Considerations
Thermal protection limits power dissipation in RT9013A.
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 turn on again
after the junction temperature cools by 30°C.
For continuous operation, do not exceed absolute
maximum operation junction temperature 125°C. The
power dissipation definition in device is :
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
junction to ambient. The maximum power dissipation can
DS9013A-02 April 2011 www.richtek.com
7
RT9013A
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
JA
the junction to ambient thermal resistance.
For recommended operating conditions specification of
RT9013A, 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/SC-82 package is 333°C/W on the
standard JEDEC 51-3 single-layer thermal test board. The
maximum power dissipation at T
= 25°C can be calculated
A
by following formula :
P
= (125°C − 25°C) / 333°C/W = 0.3W for SC-70-5/
D(MAX)
SC-82 packages
The maximum power dissipation depends on operating
ambient temperature for fixed T
and thermal resistance
J(MAX)
θJA. For RT9013A packages, the Figure 2 of derating curves
allows the designer to see the effect of rising ambient
temperature on the maximum power allowed.
is
0.7
0.6
0.5
0.4
SC-70-5/SC-82
0.3
0.2
Power Dissipation (W)
0.1
0
0 12.5 25 37.5 50 62.5 75 87.5 100 113 125
Ambient Temperature
Single Layer PCB
(°C)
Figure 2. Derating Curves for RT9013A Packages
DS9013A-02 April 2011www.richtek.com
8
Outline Dimension
RT9013A
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
e 0.650 0.026
B
A1
H 0.080 0.260 0.003 0.010
L 0.210 0.460 0.008 0.018
SC-70-5 Surface Mount Package
DS9013A-02 April 2011 www.richtek.com
9
RT9013A
D
e
C
b
A
e
B
b1
A1
H
L
Dimensions In Millimeters Dimensions In Inches
Symbol
Min Max Min Max
A 0.800 1.100 0.031 0.043
A1 0.000 0.100 0.000 0.004
B 1.150 1.350 0.045 0.053
b 0.150 0.400 0.006 0.016
b1 0.350 0.500 0.014 0.020
C 1.800 2.450 0.071 0.096
D 1.800 2.200 0.071 0.087
e 1.300 0.051
H 0.080 0.260 0.003 0.010
L 0.200 0.460 0.008 0.018
Richtek Technology Corporation
Headquarter
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
SC-82 Surface Mount 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.
DS9013A-02 April 2011www.richtek.com
10
Loading...