RT9193-XXGQW [RICHTEK]
暂无描述;型号: | RT9193-XXGQW |
厂家: | RICHTEK TECHNOLOGY CORPORATION |
描述: | 暂无描述 稳压器 |
文件: | 总14页 (文件大小:227K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
RT9193
300mA, Ultra-Low Noise, Ultra-Fast CMOS LDO Regulator
General Description
Features
z Ultra Low Noise for RF Application
The RT9193 is designed for portable RF and wireless
applications with demanding performance and space
requirements. The RT9193 performance is optimized for
battery-powered systems to deliver ultra low noise and
low quiescent current. A noise bypass pin is available for
further reduction of output noise. Regulator ground current
increases only slightly in dropout, further prolonging the
battery life. The RT9193 also works with low-ESR ceramic
capacitors, reducing the amount of board space necessary
for power applications, critical in hand-held wireless
devices. The RT9193 consumes less than 0.01μA in
shutdown mode and has fast turn-on time less than 50μs.
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, SOT-23-5,
TSOT-23-5, WDFN-6L 2x2 and MSOP-8 packages.
z Ultra Fast Response in Line/Load Transient
z Quick Start-Up (Typically 50us)
z < 0.01uA Standby Current When Shutdown
z Low Dropout : 220mV @ 300mA
z Wide Operating Voltage Ranges : 2.5V to 5.5V
z TTL-Logic-Controlled Shutdown Input
z Low Temperature Coefficient
z Current Limiting Protection
z Thermal Shutdown Protection
z Only 1μF Output Capacitor Required for Stability
z High Power Supply Rejection Ratio
z Custom Voltage Available
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z CDMA/GSM Cellular Handsets
z Battery-Powered Equipment
z Laptop, Palmtops, Notebook Computers
z Hand-Held Instruments
Ordering Information
RT9193-
Package Type
U5 : SC-70-5
B : SOT-23-5
z PCMCIA Cards
J5 : TSOT-23-5
QW : WDFN-6L 2x2 (W-Type)
F : MSOP-8
z Portable InformationAppliances
Marking Information
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area, otherwise visit our website for detail.
Output Voltage
15 : 1.5V
16 : 1.6V
:
Typical Application Circuit
RT9193
49 : 4.9V
50 : 5.0V
1H : 1.85V
2H : 2.85V
4G : 4.75V
V
IN
VIN
VOUT
V
OUT
C
IN
C
OUT
GND
1uF/X7R
1uF/X7R
Chip Enable
EN
BP
C
22nF
BP
Note :
Richtek Pb-free and Green 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.
DS9193-12 February 2009
www.richtek.com
1
RT9193
Pin Configurations
(TOP VIEW)
VOUT
BP
NC
VIN
NC
8
7
6
5
NC
EN
BP
GND
1
2
3
6
5
4
EN
GND
VIN
BP
5
4
2
3
4
NC
7
2
3
VOUT
VOUT
VIN GND EN
WDFN-6L 2x2
MSOP-8
SC-70-5/SOT-23-5/TSOT-23-5
Functional Pin Description
Pin Name
Pin Function
Chip Enable (Active High). Note that this pin is high impedance. There should be a pull low 100kΩ
resistor connected to GND when the control signal is floating.
EN
BP
Reference Noise Bypass.
Ground.
GND
VOUT
VIN
Output Voltage.
Power Input Voltage.
Function Block Diagram
EN
Shutdown
and
Logic Control
VIN
Quick
Start
V
BP
REF
+
MOS Driver
Error
Amplifier
VOUT
GND
Current-Limit
and
Thermal
Protection
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DS9193-12 February 2009
RT9193
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage------------------------------------------------------------------------------------------------------ 6V
z PowerDissipation, PD @ TA = 25°C
SC-70-5 ---------------------------------------------------------------------------------------------------------------------- 300mW
TSOT-23-5/SOT-23-5------------------------------------------------------------------------------------------------------ 400mW
WDFN-6L 2x2 -------------------------------------------------------------------------------------------------------------- 606mW
MSOP-8 --------------------------------------------------------------------------------------------------------------------- 625mW
z Package Thermal Resistance (Note 2)
SOT-70-5, θJA --------------------------------------------------------------------------------------------------------------- 333°C/W
TSOT-23-5/SOT-23-5, θJA ------------------------------------------------------------------------------------------------ 250°C/W
TSOT-23-5/SOT-23-5, θJC ----------------------------------------------------------------------------------------------- 25°C/W
WDFN-6L 2x2, θJA --------------------------------------------------------------------------------------------------------- 165°C/W
WDFN-6L 2x2, θJC -------------------------------------------------------------------------------------------------------- 20°C/W
MSOP-8 θJA ---------------------------------------------------------------------------------------------------------------- 160°C/W
MSOP-8 θJC ---------------------------------------------------------------------------------------------------------------- 55°C/W
z Junction Temperature ----------------------------------------------------------------------------------------------------- 150°C
z Lead Temperature (Soldering, 10 sec.)------------------------------------------------------------------------------- 260°C
z Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 3)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions (Note 4)
z Supply Input Voltage------------------------------------------------------------------------------------------------------ 2.5V to 5.5V
z EN Input Voltage ----------------------------------------------------------------------------------------------------------- 0V to 5.5V
z Junction Temperature Range-------------------------------------------------------------------------------------------- −40°C to 125°C
z Ambient Temperature Range-------------------------------------------------------------------------------------------- −40°C to 85°C
Electrical Characteristics
(VIN = VOUT + 1V, CIN = COUT = 1uF, CBP = 22nF, TA = 25°C, unless otherwise specified)
Parameter
Output Voltage Accuracy
Current Limit
Symbol
Test Conditions
= 1mA
Min
−2
Typ
--
Max
2
Unit
%
ΔV
I
OUT
OUT
I
R
= 1Ω
LOAD
360
--
400
90
--
mA
μA
LIM
≥
Quiescent Current
I
Q
V
EN
1.2V, I = 0mA
OUT
130
200
300
I
= 200mA, V
> 2.8V
> 2.8V
170
220
OUT
OUT
OUT
Dropout Voltage
Line Regulation
(Note 5)
V
mV
%
DROP
I
= 300mA, V
--
--
OUT
V
IN
= (V
+ 1V) to 5.5V,
OUT
ΔV
--
0.3
LINE
I
= 1mA
OUT
Load Regulation
ΔV
1mA < I
< 300mA
--
--
--
--
--
0.01
0
0.6
1
%
μA
nA
LOAD
OUT
Standby Current
I
V
= GND, Shutdown
= GND or VIN
EN
STBY
EN
EN Input Bias Current
I
V
100
0.4
IBSD
Logic-Low
Logic-High
V
V
= 3V to 5.5V, Shutdown
= 3V to 5.5V, Start-Up
IN
--
IL
IN
EN Threshold Voltage
V
V
V
1.2
--
--
IH
To be continued
DS9193-12 February 2009
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3
RT9193
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
uV
10Hz to 100kHz, I
= 200mA
OUT
Output Noise Voltage
e
--
100
--
NO
RMS
C
OUT
= 1uF
Power Supply
Rejection Rate
f = 100Hz
f = 10kHz
--
--
--
−70
−50
165
--
--
--
PSRR
C
OUT
= 1uF, I
= 10mA
dB
OUT
Thermal Shutdown Temperature
Thermal Shutdown Temperature
T
°C
°C
SD
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. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board
(Single Layer, 1S) 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. The dropout voltage is defined as VIN − VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV.
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DS9193-12 February 2009
RT9193
Typical Operating Characteristics
Output Voltage vs. Temperature
Quiescent Current vs. Temperature
1.8
95
90
85
80
75
70
65
60
RT9193-15xU5
VIN = 3.3V
CIN = COUT = 1uF X7R
RT9193-15xU5
VIN = 3.3V
CIN = COUT = 1uF X7R
1.7
1.6
1.5
1.4
1.3
1.2
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
(°C)
Temperature
Temperature
(°C)
Dropout Voltage vs. Load Current
PSRR
20
0
300
250
200
150
100
50
VIN = 4V to 5V
CIN = COUT = 1uF, X7R
RT9193-33xB
CIN = COUT = 1uF
TJ = 125°C
-20
-40
-60
-80
TJ = 25°C
TJ = -40°C
ILoad = 100mA
ILoad = 10mA
0
10
100
1K
10K
100K
1M
0
0.05
0.1
0.15
0.2
0.25
0.3
Frequency (Hz)
Load Current (A)
EN Pin Shoutdown Threshold vs. Temperature
EN Pin Shutdown Response
1.75
RT9193-15xU5
VIN = 3.3V
CIN = COUT = 1uF X7R
VIN = 5V
CIN = COUT = 1uF
RT9193-28xU5
No Load
10
1.5
1.25
1
5
0
2
1
0
0.75
0.5
-50
-25
0
25
50
75
100
125
Time (500μs/Div)
Temperature (°C)
DS9193-12 February 2009
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5
RT9193
Load Transient Response
Load Transient Response
ILoad = 1mA to 250mA
VIN = 5V, VOUT = 2.8V
CIN = COUT = 1uF
ILoad = 1mA to 60mA
VIN = 5V, VOUT = 2.8V
CIN = COUT = 1uF
100
50
0
400
200
0
20
0
50
0
-20
-50
Time (500μs/Div)
Time (500μs/Div)
Line Transient Response
Line Transient Response
VIN = 4V to 5V
COUT = 1uF
RT9193-25xB
ILoad = 1mA
VIN = 4V to 5V
COUT = 1uF
RT9193-25xB
ILoad = 100mA
6
5
4
6
5
4
10
0
10
0
-10
-10
Time (100μs/Div)
Time (50μs/Div)
Noise
Noise
RT9193-30xB
ILoad = 50mA
VIN = 4.5V
CIN = COUT = 1uF, X7R
VIN = 4.5V
CIN = COUT = 1uF, X7R
RT9193-15xU5
ILoad = 50mA
200
100
0
200
100
0
-100
-200
-100
-200
f = 10Hz to 100kHz
f = 10Hz to 100kHz
Time (10ms/Div)
Time (10ms/Div)
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DS9193-12 February 2009
RT9193
Start Up
VIN = 5V
CIN = COUT = 1uF
RT9193-28xU5
No Load
10
5
0
2
1
0
Time (10μs/Div)
DS9193-12 February 2009
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7
RT9193
Applications Information
Bypass Capacitor and Low Noise
Like any low dropout regulator, the external capacitors
used with the RT9193 must be carefully selected for
regulator stability and performance. Using a capacitor
whose value is > 1μF on the RT9193 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 or tantalum 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 RT9193 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 1μF with ESR is > 25mΩ on the RT9193 output
ensures stability. The RT9193 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 RT9193 and returned to a
clean analog ground.
Connecting a 22nF between the BP pin and GND pin
significantly reduces noise on the regulator output, it is
critical that the capacitor connection between the BP pin
andGNDpin be direct and PCB traces should be as short
as possible. There is a relationship between the bypass
capacitor value and the LDO regulator turn on time. DC
leakage on this pin can affect the LDO regulator output
noise and voltage regulation performance.
Enable Function
The RT9193 features an LDO regulator enable/disable
function. To assure the LDO regulator will switch on, the
EN turn on control level must be greater than 1.2 volts.
The LDO regulator will go into the shutdown mode when
the voltage on the EN pin falls below 0.4 volts. For to
protecting the system, the RT9193 have a quick-discharge
function. If the enable function is not needed in a specific
application, it may be tied to VIN to keep the LDO regulator
in a continuously on state.
Thermal Considerations
Thermal protection limits power dissipation in RT9193.
When the operation junction temperature exceeds 165°C,
the OTP circuit starts the thermal shutdown function turn
the pass element off. The pass element turn on again
after the junction temperature cools by 30°C.
For continue operation, do not exceed absolute maximum
operation junction temperature 125°C. The power
dissipation definition in device is :
Region of Stable COUT ESR vs. Load Current
100
Instable
PD = (VIN − VOUT) x IOUT + VIN x IQ
10
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
be calculated by following formula :
1
Stable
0.10
0.01
0.00
PD(MAX) = ( TJ(MAX) − TA ) /θJA
RT9193-15xU5
CIN = COUT = 1uF, X7R
Simulation Verify
Where TJ(MAX) is the maximum operation junction
temperature 125°C, TA is the ambient temperature and
the θJA is the junction to ambient thermal resistance.
0
50
100
150
200
250
300
Load Current (mA)
Figure 1
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8
DS9193-12 February 2009
RT9193
For recommended operating conditions specification of
RT9193, where TJ(MAX) is the maximum junction
temperature of the die (125°C) and TA is the maximum
ambient temperature. The junction to ambient thermal
resistance (θJA is layout dependent) for TSOT-23-5/
SOT-23-5 package is 250°C/W, SC-70-5 package is
333°C/W, WDFN-6L 2x2 package is 165°C/W and MSOP-
8 package is 160°C/W on standard JEDEC 51-3 thermal
test board. The maximum power dissipation at TA = 25°C
can be calculated by following formula :
PD(MAX) = (125°C − 25°C) / 333 = 300mW for
SC-70-5
PD(MAX) = (125°C − 25°C) / 250 = 400mW for
TSOT-23-5/SOT-23-5
PD(MAX) = (125°C − 25°C) / 165 = 606mW for
WDFN-6L 2x2
PD(MAX) = (125°C −25°C) / 160 = 625mW for
MSOP-8
The maximum power dissipation depends on operating
ambient temperature for fixed TJ(MAX) and thermal
resistance θJA. For RT9193 packages, the Figure 2 of
derating curves allows the designer to see the effect of
rising ambient temperature on the maximum power
allowed.
700
MSOP-8
WDFN-6L 2x2
600
500
400
300
200
100
0
TSOT-23-5/
SOT-23-5
SC 70-5
0
25
50
75
100
125
Ambient Temperature (°C)
Figure 2.Derating Curve for Packages
DS9193-12 February 2009
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9
RT9193
Outline Dimension
H
D
L
B
C
A
b
A1
e
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
B
0.800
0.000
1.150
0.150
1.800
1.800
1.100
0.100
1.350
0.400
2.450
2.250
0.031
0.000
0.045
0.006
0.071
0.071
0.044
0.004
0.054
0.016
0.096
0.089
b
C
D
e
0.650
0.026
H
L
0.080
0.210
0.260
0.460
0.003
0.008
0.010
0.018
SC-70-5 Surface Mount Package
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DS9193-12 February 2009
RT9193
H
D
L
B
C
A
b
A1
e
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
B
0.700
0.000
1.397
0.300
2.591
2.692
0.838
0.080
0.300
1.000
0.100
1.803
0.559
3.000
3.099
1.041
0.254
0.610
0.028
0.000
0.055
0.012
0.102
0.106
0.033
0.003
0.012
0.039
0.004
0.071
0.022
0.118
0.122
0.041
0.010
0.024
b
C
D
e
H
L
TSOT-23-5 Surface Mount Package
DS9193-12 February 2009
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11
RT9193
H
D
L
B
C
A
b
A1
e
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
B
0.889
0.000
1.397
0.356
2.591
2.692
0.838
0.080
0.300
1.295
0.152
1.803
0.559
2.997
3.099
1.041
0.254
0.610
0.035
0.000
0.055
0.014
0.102
0.106
0.033
0.003
0.012
0.051
0.006
0.071
0.022
0.118
0.122
0.041
0.010
0.024
b
C
D
e
H
L
SOT-23-5 Surface Mount Package
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DS9193-12 February 2009
RT9193
D
D2
L
E
E2
SEE DETAIL A
1
b
e
2
1
2
1
A
A3
A1
DETAILA
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
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
A3
b
0.700
0.000
0.175
0.200
1.950
1.000
1.950
0.500
0.800
0.050
0.250
0.350
2.050
1.450
2.050
0.850
0.028
0.000
0.007
0.008
0.077
0.039
0.077
0.020
0.031
0.002
0.010
0.014
0.081
0.057
0.081
0.033
D
D2
E
E2
e
0.650
0.026
L
0.300
0.400
0.012
0.016
W-Type 6L DFN 2x2 Package
DS9193-12 February 2009
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13
RT9193
D
L
E
E1
e
A2
A
A1
b
Dimensions In Millimeters
Dimensions In Inches
Symbol
Min
Max
Min
Max
A
A1
A2
b
0.810
0.000
0.750
0.220
2.900
1.100
0.150
0.950
0.380
3.100
0.032
0.000
0.030
0.009
0.114
0.043
0.006
0.037
0.015
0.122
D
e
0.650
0.026
E
4.800
2.900
0.400
5.000
3.100
0.800
0.189
0.114
0.016
0.197
0.122
0.031
E1
L
8-Lead MSOP Plastic Package
Richtek Technology Corporation
Headquarter
Richtek Technology Corporation
Taipei Office (Marketing)
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
8F, No. 137, Lane 235, Paochiao Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
Tel: (8862)89191466 Fax: (8862)89191465
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.
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14
DS9193-12 February 2009
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