RT9011-PSGQW [RICHTEK]
Portable Power Management 300mA Dual LDO Regulator;
| 型号： | RT9011-PSGQW |
| 厂家： | 
RICHTEK TECHNOLOGY CORPORATION |
| 描述： | Portable Power Management 300mA Dual LDO Regulator |
| 文件： | 总12页 (文件大小：336K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Preliminary
RT9011
Portable Power Management 300mA Dual LDO Regulator
General Description
Features
z Wide Operating Voltage Ranges : 2.5V to 5.5V
The RT9011 is a dual channel, low noise, and low dropout
regulator sourcing up to 300mAat each channel. The range
of output voltage is from 1.2V to 3.6V by operating from
2.5V to 5.5V input.
z Low-Noise for RF Application
z No Noise Bypass Capacitor Required
z Fast Response in Line/Load Transient
z TTL-Logic-Controlled Shutdown Input
z Low Temperature Coefficient
RT9011 offers 2% accuracy, extremely low dropout voltage
(240mV @ 300mA), and extremely low ground current,
only 27μA per LDO. The shutdown current is near zero
current which is suitable for battery-power devices. Other
features include current limiting, over temperature, output
short circuit protection.
z Dual LDO Outputs (300mA/300mA)
z Ultra-low Quiescent Current 27μA/LDO
z High Output Accuracy 2%
z Short Circuit Protection
z Thermal Shutdown Protection
RT9011 is short circuit thermal folded back protected.
RT9011 lowers its OTP trip point from 165°C to 110°C
when output short circuit occurs (VOUT < 0.4V) providing
maximum safety to end users.
z Current Limit Protection
z Short Circuit Thermal Folded Back Protection
z Tiny TSOT-23-6 and 8-Lead WDFN Package
z RoHS Compliant and 100% Lead (Pb)-Free
RT9011 can operate stably with very small ceramic output
capacitors, reducing required board space and component
cost. RT9011 is available in fixed output voltages in the
TSOT-23-6 and WDFN-8L 2x2 package.
Applications
z CDMA/GSM Cellular Handsets
z Battery-Powered Equipment
z Laptop, Palmtops, Notebook Computers
z Hand-Held Instruments
Ordering Information
RT9011-
z PCMCIA Cards
Package Type
J6 : TSOT-23-6
z Portable InformationAppliances
QW : WDFN-8L 2x2 (W-Type)
Operating Temperature Range
Pin Configurations
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
(TOP VIEW)
VOUT1 VIN EN1
Output Voltage : VOUT1/VOUT2
CM : 1.20V/2.80V, FM : 1.50V/2.80V
GK : 1.80V/2.60V, GS : 1.80V/3.30V
JG : 2.50V/1.80V, JM : 2.50V/2.80V
JP : 2.50V/3.00V, JS : 2.50V/3.30V
JN : 2.50V/2.85V, MG : 2.80V/1.80V
MM : 2.80V/2.80V, NN : 2.85V/2.85V
MS : 2.80V/ 3.30V, PG : 3.00V/1.80V
MP : 2.80V/3.00V, PP : 3.00V/3.00V
SS : 3.30V/3.30V, SQ : 3.30V/3.10V
6
1
5
2
4
3
1
2
3
4
8
7
6
5
VOUT1
VOUT2
NC
VIN
EN1
EN2
NC
9
GND
EN2
VOUT2 GND
WDFN-8L 2x2
TSOT-23-6
Note : There is no pin1 indicator on top mark for TSOT-23-6
type, and pin 1 will be lower left pin when reading top mark
from left to right.
BM : 1.30V/2.80V
Note :
Marking Information
Richtek Pb-free and Green products are :
`RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area, otherwise visit our website for detail.
`Suitable for use in SnPb or Pb-free soldering processes.
`100% matte tin (Sn) plating.
DS9011-05 August 2007
www.richtek.com
1
Preliminary
RT9011
Typical Application Circuit
V
VIN
IN
C
V
V
VOUT1
RT9011
IN
OUT1
OUT2
C
1uF
OUT1
1uF
EN1
EN2
Chip Enable
VOUT2
C
OUT2
1uF
GND
Functional Pin Description
Pin No.
Pin Name
Pin Function
RT9011-□□PQW RT9011-□□PJ6
1
2
5
4
3
2
1
6
--
VIN
Supply Input.
EN1
EN2
GND
Chip Enable1 (Active High).
Chip Enable2 (Active High).
Common Ground.
3
5
7
VOUT2 Channel 2 Output Voltage.
VOUT1 Channel 1 Output Voltage.
8
4, 6
NC
No Internal Connection.
The exposed pad must be soldered to a large PCB and
connected to GND for maximum power dissipation.
Exposed Pad (9)
--
GND
Available Voltage Version
Code
Voltage 1.2
Code
C
B
1.3
L
F
W
G
1.8
V
D
1.85
P
Y
H
2
E
2.1
S
J
2.5
--
K
2.6
--
1.5
M
1.6
N
1.9
Q
T
R
Voltage 2.65
2.7
2.8
2.85
2.9
3
3.1
3.2
3.3
--
--
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2
DS9011-05 August 2007
Preliminary
RT9011
Function Block Diagram
EN1
Shutdown
VIN
0.2uA
and
Logic Control
VREF
MOS Driver
+
Error
Amplifier
VOUT1
GND
Current-Limit
and
Thermal
Protection
EN2
Shutdown
0.2uA
and
Logic Control
VREF
MOS Driver
+
Error
Amplifier
VOUT2
GND
Current-Limit
and
Thermal
Protection
DS9011-05 August 2007
www.richtek.com
3
Preliminary
RT9011
Absolute Maximum Ratings (Note 1)
z Supply Input Voltage------------------------------------------------------------------------------------------------------ 6V
z Other I/O Pin Voltages --------------------------------------------------------------------------------------------------- 6V
z PowerDissipation, PD @ TA = 25°C
TSOT23-6 ------------------------------------------------------------------------------------------------------------------- 0.455W
WDFN-6L 2x2 -------------------------------------------------------------------------------------------------------------- 0.606W
z Package Thermal Resistance (Note 4)
TSOT23-6, θJA -------------------------------------------------------------------------------------------------------------- 220°C/W
WDFN-6L 2x2, θJA --------------------------------------------------------------------------------------------------------- 165°C/W
z Lead Temperature (Soldering, 10 sec.)------------------------------------------------------------------------------- 260°C
z Storage Temperature Range -------------------------------------------------------------------------------------------- −65°C to 150°C
z ESD Susceptibility (Note 2)
HBM (Human Body Mode) ---------------------------------------------------------------------------------------------- 2kV
MM (Machine Mode) ------------------------------------------------------------------------------------------------------ 200V
Recommended Operating Conditions (Note 3)
z Supply Input Voltage------------------------------------------------------------------------------------------------------ 2.5V to 5.5V
z Enable 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, VEN = VIN, CIN = COUT = 1μF, TA = 25°C, unless otherwise specified.)
Parameter
Input Voltage
Dropout Voltage
Output voltage range
Accuracy
Symbol
Test Conditions
= 2.5V to 5.5V
Min
2.5
--
Typ
--
Max
5.5
330
3.6
+2
Units
V
V
V
V
V
IN
IN
(Note 5)
240
--
mV
V
I
= 300mA
DROP
OUT
OUT
1.2
-2
--
%
ΔV
ΔV
ΔV
V
OUT
I
= 1mA
OUT
V
V
= (V
+ 0.3V) to 5.5V or
IN
OUT
Line Regulation
--
--
0.2
%/V
LINE
> 2.5V, whichever is larger
IN
Load Regulation
Current Limit
--
330
--
--
450
58
--
0.6
700
80
1
%
mA
μA
μA
1mA < I
< 300mA
LOAD
OUT
R
= 1Ω
LOAD
Quiescent Current
Shutdown Current
I
I
V
V
V
V
> 1.5V
< 0.4V
Q
EN
--
Q_SD
EN
1.5
--
--
--
V
IH
= 2.5V to 5.5V, Power On
= 2.5V to 5.5V, Shutdown
IN
IN
EN Threshold
V
--
0.4
--
V
IL
Output Voltage TC
--
100
170
40
ppm/°C
°C
Thermal Shutdown
--
--
T
SD
Thermal Shutdown Hysteresis
--
--
°C
ΔT
SD
To be continued
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4
DS9011-05 August 2007
Preliminary
RT9011
Parameter
Symbol
Test Conditions
f =100Hz
Min
--
Typ
65
60
50
65
50
50
Max
--
Units
dB
PSRR
= 10mA
PSRR
f =1kHz
f =10kHz
f =100Hz
f =1kHz
f =10kHz
--
--
dB
I
LOAD
--
--
dB
--
--
dB
PSRR
= 150mA
PSRR
--
--
dB
I
LOAD
--
--
dB
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. Devices are ESD sensitive. Handling precaution recommended.
Note 3. The device is not guaranteed to function outside its operating conditions.
Note 4. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of
JEDEC 51-3 thermal measurement standard.
Note 5. The dropout voltage is defined as VIN -VOUT, which is measured when VOUT is VOUT(NORMAL) − 100mV.
DS9011-05 August 2007
www.richtek.com
5
Preliminary
RT9011
Typical Operating Characteristics
Output Voltage vs. Temperature
Output Voltage vs. Temperature
3.4
3.35
3.3
1.9
RT9011-GS, VOUT1
RT9011-GS, VOUT2
1.85
1.8
3.25
3.2
1.75
1.7
-50
-25
0
25
50
75
100
125
-50
-25
0
25
50
75
100
125
(°C)
Temperature
Temperature (°C)
Quiescent Current vs. Temperature
Dropout Voltage vs. Load Current
70
65
60
55
50
350
300
250
200
150
100
50
RT9011-GS
RT9011-GS, VOUT2
VIN = VEN = 4.3V
TJ = 125°C
CIN = COUT1 = COUT2 = 1uF/X7R
TJ = 25°C
TJ = -40°C
0
0
50
100
150
200
250
300
-50
-25
0
25
50
75
100
125
Temperature (°C)
Load Current (mA)
Power-On
PSRR
20
RT9011-FM
Both ILOAD = 10mA
RT9011-FM, VOUT1
VIN = 4.3V 0.1V
0
-20
-40
-60
-80
CIN = COUT1 = COUT2 = 1uF/X7R
ILOAD = 100mA
ILOAD = 50mA
VEN
(5V/Div)
VOUT1
(1V/Div)
VOUT2
(2V/Div)
POR
ILOAD = 10mA
(5V/Div)
0.01
0.1
1
10k
100k
1000k
Time (10μs/Div)
Frequency
(Hz)
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6
DS9011-05 August 2007
Preliminary
RT9011
Line Transient Response
Line Transient Response
RT9011-GS, Both ILOAD = 10mA
VIN = 3.8V to 4.8V
RT9011-GS, Both ILOAD = 1mA
VIN = 3.8V to 4.8V
4.8
3.8
4.8
3.8
VIN
(V)
VIN
(V)
VOUT2
VOUT2
(10mV/Div)
(10mV/Div)
VOUT1
VOUT1
(10mV/Div)
(10mV/Div)
Time (100μs/Div)
Time (100μs/Div)
Line Transient Response
Line Transient Response
RT9011-GS, Both ILOAD = 50mA
VIN = 3.8V to 4.8V
RT9011-GS, Both ILOAD = 100mA
VIN = 3.8V to 4.8V
4.8
VIN
4.8
VIN
(V)
(V)
3.8
3.8
VOUT2
VOUT2
(10mV/Div)
(10mV/Div)
VOUT1
VOUT1
(10mV/Div)
(10mV/Div)
Time (100μs/Div)
Time (100μs/Div)
Load Transient Response
Load Transient Response
RT9011-GS, ILOAD = 10mA to 100mA
VIN = VEN = 4.3V
CIN = COUT1 = COUT2 = 1uF/X7R
RT9011-GS, ILOAD = 10mA to 50mA
VIN = VEN = 4.3V
CIN = COUT1 = COUT2 = 1uF/X7R
IOUT
(100mA/Div)
IOUT
(50mA/Div)
VOUT1
VOUT1
(20mV/Div)
(20mV/Div)
VOUT2
VOUT2
(20mV/Div)
(20mV/Div)
Time (250μs/Div)
Time (250μs/Div)
DS9011-05 August 2007
www.richtek.com
7
Preliminary
RT9011
Start Up
EN Pin Shutdown Response
RT9011-FM, VIN = 5V
IOUT1 = IOUT2 = 50mA
RT9011-FM, VIN = 5V
IOUT1 = IOUT2 = 50mA
VEN
VEN
(5V/Div)
(5V/Div)
(1V/Div)
VOUT2
VOUT2
VOUT1
VOUT1
(1V/Div)
Time (50μs/Div)
Time (5μs/Div)
Noise
Noise
RT9011-GS, No LOAD
VIN = VEN = 4.5V(By battery)
RT9011-GS, ILOAD = 50mA
VIN = VEN = 4.5V(By battery)
150
100
50
300
200
100
0
CIN = COUT1 = COUT2 = 1uF/X7R
CIN = COUT1 = COUT2 = 1uF/X7R
0
-50
-100
-150
-100
-200
-300
Time (10ms/Div)
Time (10ms/Div)
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8
DS9011-05 August 2007
Preliminary
RT9011
Applications Information
Like any low-dropout regulator, the external capacitors used
with the RT9011 must be carefully selected for regulator
stability and performance. Using a capacitor whose value
is > 1μF on the RT9011 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.
Thermal Considerations
Thermal protection limits power dissipation in RT9011.
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 40°C. RT9011
lowers its OTP trip level from 170°C to 110°C when output
short circuit occurs (VOUT < 0.4V) as shown in Figure 2.
It limits IC case temperature under 100°C and provides
maximum safety to customer while output short circuit
occurring.
The output capacitor must meet both requirements for
minimum amount of capacitance and ESR in all LDOs
application. The RT9011 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 > 20mΩ on the
RT9011 output ensures stability. The RT9011 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 RT9011
and returned to a clean analog ground.
V
Short to GND
OUT
0.4V
V
I
OUT
OUT
TSD
170 °C
OTP Trip Point
110 C
°
110 °C
80 °C
IC Temperature
Figure 2. Short Circuit Thermal Folded Back Protection
when Output Short Circuit Occurs (Patent)
Region of Stable COUT ESR vs. Load Current
100
RT9014-FM, VIN = 5V
CIN = COUT1
=
For continuous operation, do not exceed absolute
maximum operation junction temperature 125°C. The
power dissipation definition in device is :
COUT2 = 1uF/X7R
10
1
Unstable Range
Stable Range
PD = (VIN-VOUT) x IOUT + VIN x IQ
0.1
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 :
0.01
0.001
Simulation Verify
0
50
100
150
200
250
300
PD(MAX) = ( TJ(MAX) - TA ) /θJA
Load Current (mA)
Where TJ(MAX) is the maximum operation junction
temperature 125°C, TAis the ambient temperature and the
θJA is the junction to ambient thermal resistance.
Figure 1. Stable Cout ESR Range
DS9011-05 August 2007
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9
Preliminary
RT9011
For recommended operating conditions specification of
RT9011, where TJ(MAX) is the maximum junction
temperature of the die (125°C) and TA is the operated
ambient temperature. The junction to ambient thermal
resistance (θJA is layout dependent) for TSOT-23-6 package
is 220°C/W and WDFN-8L2x2 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 :
PD(MAX) = ( 125°C - 25°C ) / 220 = 0.455 W for TSOT-23-6
packages
PD(MAX) = ( 125°C - 25°C ) / 165 = 0.606 W for
WDFN-8L 2x2 packages
The maximum power dissipation depends on operating
ambient temperature for fixed TJ(MAX) and thermal
resistance θJA. For RT9011 packages, the Figure 3 of de-
rating curves allows the designer to see the effect of rising
ambient temperature on the maximum power allowed.
Power Dissipation vs. Ambient Temperature
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
WDFN-8L 2x2
TSOT-23-6
0
25
50
75
100
125
Ambient Temperature (°C)
Figure 3. Derating Curves for RT9011 Packages
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10
DS9011-05 August 2007
Preliminary
RT9011
Outline Dimension
H
D
L
C
A
B
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-23-6 Surface Mount Package
DS9011-05 August 2007
www.richtek.com
11
Preliminary
RT9011
D2
D
L
E
E2
SEE DETAIL A
1
e
b
2
1
2
1
A
A3
DETAILA
Pin #1 ID and Tie Bar Mark Options
A1
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
0.400
0.800
0.050
0.250
0.300
2.050
1.250
2.050
0.650
0.028
0.000
0.007
0.008
0.077
0.039
0.077
0.016
0.031
0.002
0.010
0.012
0.081
0.049
0.081
0.026
D
D2
E
E2
e
0.500
0.020
L
0.300
0.400
0.012
0.016
W-Type 8L DFN 2x2 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
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12
DS9011-05 August 2007
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