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REV. 1.0.5 3/21/02
Features
• 1% output voltage accuracy
• Low noise
• Only 75µA ground current at 80mA load
• Ripple rejection up to 75dB at 1kHz
• Excellent line and load transient response
• Guaranteed to 80mA output current
• Industry standard five lead SC70 packages
• Fixed 2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 2.9V, 3.0V, 3.1V,
3.3V and custom output voltage options
Applications
• Cellular phones
• Wireless communicators
• PDAs / palmtops / organizers
• Battery powered portable electronics
General Description
The ILC7010/7011 is an 80mA, Ultra Low Noise, Low
Dropout (LDO) linear regulator, designed and processed in
CMOS technology. This process combines the best CMOS
features of low quiescent current, small size and low dropout
voltage with the best bipolar features of high ripple rejection,
ultra low noise and power handling capability. The ILC7010/
7011 offers a quiescent current of less than 100
µ
A, a logic
level enable (regulator EN) pin, a footprint that is half the
size of the industry standard SOT-23, and a low dropout
voltage of 25mV at 10mA. With better than 70 dB (1kHz) of
ripple rejection, low noise of 40µV RMS and 1% output
voltage accuracy, the ILC7010/7011 sets a new standard in
linear regulators for communications and personal
electronics applications.
Block Diagram
VIN
CN
(ILC7011
only)
EN
+
–
GND
VOUT
Error
Amplifier
Voltage
Reference
Thermal
Shut
Down
Trans-
conductance
Amplifier
ILC7010/7011
80mA SC70 Low Noise CMOS RF-LDO™ Regulator
ILC7010/7011 PRODUCT SPECIFICATION
2
REV. 1.0.5 3/21/02
Test circuit
Figure 1.
Pin Configuration
Pin Definition ILC7010
Pin Definition ILC7011
Pin Number Pin Name Pin Function Description
1EN
Enable input
. High level enables V
OUT
while Low level commands shutdown
mode and discharge C
OUT
to GND
2 N/C
Not connected
3 GND
Ground of the IC
4V
OUT
Voltage output
. Regulated output voltage
5V
IN
Supply voltage input
Pin Number Pin Name Pin Function Description
1V
OUT
Voltage output
. Regulated output voltage
2 GND
Ground of the IC
3V
IN
Supply voltage input
4EN
Enable input
. High level enables V
OUT
while Low level commands shutdown
mode and discharge C
OUT
to GND
5CN
Optional noise bypass capacitor
VIN CIN
CN
COUT RL
VIN
EN
VOUT
(CN)GND
VIN
12 3 12 3
54 54
VOUT
EN N/C GND
ILC7010
VIN
VOUT
ENCN
SC70
GND
ILC7011
PRODUCT SPECIFICATION ILC7010/7011
REV. 1.0.5 3/21/02
3
Absolute Maximum Ratings
Absolute maximum ratings are the values beyond which the device may be damaged or have its useful life
impaired. Functional operation under these conditions is not implied.
Recommended Operating Conditions
Parameter Min. Max. Units
Supply Voltage 10 V
EN Input Voltage -0.3 V
IN
+ 0.3 V
Output Voltage -0.3 V
IN
+ 0.3 V
Junction Temperature (T
J
) 150, Internally limited °C
Storage Temperature -40 150 °C
Lead Soldering Temperature, 10 seconds 300 °C
Power Dissipation (P
D
) 150 mW
Parameter Conditions Min. Typ. Max. Units
Supply Voltage V
DD
V
IN
to GND V
OUT
+V
DO
V
OUT
+1 V
OUT
+4 V
Peak Output Current I
OUT
to GND,
tpw=2mS
120 mA
Ambient Operating Temperature T
A
-40 85
°
C
ILC7010/7011 PRODUCT SPECIFICATION
4
REV. 1.0.5 3/21/02
Electrical Specifications
V
IN
=V
OUT
+1V, I
OUT
=1mA, V
EN
=2V and T
A
= +25°C using circuit in Figure 1 with C
IN
=C
OUT
=1µF, C
N
=0,
unless otherwise specified
Notes:
1. For 2.5V < V
OUT
< 2.8V refer to diagram “Dropout Voltage vs. Output Voltage.”
2. Dropout voltage is defined as the input to output differential voltage at which the output voltage drops 2% below the nominal
value measured with 1V differential.
Parameter Symbol Conditions Min. Typ. Max. Units
Output Voltage V
OUT
0.99
V
OUTnom
V
OUTnom
1.01
V
OUTnom
V
Ground pin Current I
GND
I
OUT
=10mA 70 90
µ
A
I
OUT
=80mA 90 110
Line Regulation
∆
V
OUT
/
V
OUT
/
∆
V
IN
V
IN
: V
OUT
+1V to V
OUT
+2V 0.017 0.075 %/V
Load
Regulation
∆
V
OUT
/
V
OUT
I
OUT
=1 to 80mA 0.12 0.2 %
Dropout Voltage
1,2
V
DO
I
OUT
=10mA, V
OUT
>2.8V 25 30 mV
I
OUT
=20mA, V
OUT
>2.8V 50 60
I
OUT
=80mA, V
OUT
>2.8V 220 250
Shutdown
(OFF) current
I
OFF
V
EN
=0 10 40 nA
EN Input Voltage V
EN
High = ON state
Low = OFF state
2
0.6
V
EN Input Current I
EN
V
EN
=0.6V 0.3
µ
A
V
EN
=2V 1
Output Noise
Voltage ILC7011
eN BW=300Hz to 50kHz
C
IN
=C
OUT
=2.2uF, C
N
=10nF
I
OUT
=10mA
40
µ
V
RMS
Ripple Rejection PSRR C
OUT
=4.7uF, 120Hz
I
OUT
=80mA
65 dB
Dynamic Line
Regulation
∆
V
OUT
(line)
∆
V
IN
=1V,I
OUT
=80mA,
tr/tf=2uS
10 mV
Dynamic Load
Regulation
∆
V
OUT
(load)
∆
I
OUT
=80mA, tr<5mS
15 mV
Resistance
Discharge in OFF
state
R
DISC
V
EN
=0 1.5
kΩ
PRODUCT SPECIFICATION ILC7010/7011
REV. 1.0.5 3/21/02 5
Typical Applications Diagrams
Thermal Protection
VIN = VOUTnom+1V
Output to GND, IOUT=0.5A/div
Load Transient Response
VIN = VOUT+1V, CN=0
∆IOUT=80mA
Line Transient Response
∆VIN = VOUT+1V to VOUT+2V
Load=10mA, COUT=2.2µF
ON/OFF Transient Response
Load=80mA,
COUT=1µF, CN=0
VOUT(AC)
IOUT (0.1A/div)
VEN
VOUT
VIN
VOUT(AC)
ILC7010/7011 PRODUCT SPECIFICATION
6REV. 1.0.5 3/21/02
120
80mA Load
No Load
110
100
90
80
70
60
50
40
30
20
10
0
012345678
Ground Current
Input Voltage (V)
Ground Current (µA)
2.830
1mA Load
80mA Load
2.825
2.820
2.815
2.810
2.805
-40 -20 0 20 40 60 80
Output Voltage
Temperature (C)
Output Voltage (V)
300
85°C
25°C
-40°C
250
200
150
100
50
0
020406080100
Dropout Voltage
Load Current (mA)
Dropout Voltage (mV)
ON/OFF Transient Response
Load=10mA, COUT=1µF
CN=10nF(ILC7011)
ON/OFF Transient Response
Load=10mA, COUT=1µF, CN=0
VEN
VOUT
VEN
VOUT
PRODUCT SPECIFICATION ILC7010/7011
REV. 1.0.5 3/21/02 7
0
50
100
150
200
250
300
350
400
2.5 2.75 3 3.25 3.5 3.75 4 4.25 4.5 4.75 5
10mA load
80mA load
VOUT (V)
Maxium VDO (mV)
Ripple Rejection
Load=10mA, COUT=4.7µF
Ripple Rejection
Load=80mA, COUT=4.7µF
Dropout Voltage vs. Output Voltage
ILC7010/7011 PRODUCT SPECIFICATION
8REV. 1.0.5 3/21/02
Application Information
Capacitor Selection
In general ceramic capacitors are preferred due to their
superior ESR performance.Those with X5R dielectric
offer the best temperature coefficient.
An input capacitor of 1µF or greater, connected between
Input and Ground, located in close proximity to the device
will improve the transient response and the noise rejection.
An output capacitor of at least 1µF is required to maintain
regulator loop stability. Stable operation will be achieved
with a wide variety of capacitors with ESR ranging from
10mΩ to 10Ω.
An optional capacitor connected between the CN pin and
ground can significantly reduce noise on the output.Values
ranging from 470pF to 10nF can be used, depending upon
the sensitivity to output noise in the application. Care should
be taken to prevent noise from external sources to enter into
the CN pin, which is a very sensitive, high impedance pin.
Leakage currents into this pin will directly affect the regula-
tor accuracy and should be kept as low as possible.
Control Functions
Enable Pin
Applying a voltage of 0.6V or less at the Enable pin will
disable the output, reducing the quiescent output current to
less than 1µA, while a voltage of 2V or greater will enable
the device. If this shutdown function is not needed,the pin
can simply be connected to the VIN pin. Allowing this pin to
float will cause erratic operation.
Thermal Protection
The ILC7010/7011 is designed to supply high peak output
currents for brief periods, however this output load will
cause the device temperature to increase and exceed maxi-
mum ratings due to power dissipation.During output over-
load conditions, when the die temperature exceeds the
shutdown limit temperature of 125 °C, onboard thermal
protection will disable the output until the temperature drops
below this limit, at which point the output is then re-enabled.
During a thermal shutdown situation the user may assert the
power-down function at the Enable pin, reducing power
consumption to the minimum level.
Thermal Characteristics
ILC7010/7011 is designed to supply up to 80mA at the
specified output voltage with an operating die (junction)
temperature of up to 125 °C. While the power dissipation is
calculated from known electrical parameters, the thermal
resistance is a result of the thermal characteristics of the
compact SC70 surface-mount package and the surrounding
PC Board copper to which it is mounted.
The relationship describing the thermal behavior of the pack-
age is:
where TJ(max) is the maximum junction temperature of the
die, which is 125 °C, and TA is the ambient operating
temperature. ΘJA is dependent on the surrounding PC
board layout and can be empirically obtained. While the
ΘJC (junction-to-case) of the SC70 package is specified at
224 °C /W, the ΘJA of the minimum PWB footprint will be at
least 235 °C /W.
This can be improved upon by providing a heat sink of
surrounding copper ground on the PCB.
Depending on the size of the copper area, the resulting ΘJA
can range from approximately 180 °C /W for one square
inch, to nearly 130 °C /W for 4 square inches.
The addition of backside copper with through-holes, stiffen-
ers, and other enhancements can also aid in reducing this
value. The heat contributed by the dissipation of other
devices located nearby must be included in design consider-
ations.
Once the limiting parameters in the thermal relationship
have been determined, the electrical design should be
verified to ensure that the device remains within specified
operating conditions.
If overload conditions are not considered, it is possible for
the device to enter a thermal cycling loop, in which the
circuit enters a shutdown condition, cools, reenables, and
then again overheats and shuts down repeatedly due to an
unmanaged fault condition.
PD max()
TJ max()
TA
–
ΘJA
--------------------------------=
PRODUCT SPECIFICATION ILC7010/7011
REV. 1.0.5 3/21/02 9
General PCB Layout Considerations
To achieve the full performance of the device, careful circuit
layout and grounding technique must be observed. Establish-
ing a small local ground, to which the GND pin, the output
and bypass capacitors are connected, is recommended, while
the input capacitor should be grounded to the main ground
plane.
The quiet local ground is then routed back to the main
ground plane using feedthrough vias.
In general, the high frequency compensation components
(input, bypass, and output capacitors)should be located as
close to the device as possible.
The proximity of the output capacitor is especially important
to achieve optimal noise compensation from the onboard
error amplifier, especially during high load conditions.
A large copper area in the local ground will provide the heat
sinking discussed above when high power dissipation signif-
icantly increases the temperature of the device.
Component-side copper provides significantly better thermal
performance for this surface-mount device, compared to that
obtained when using only copper planes on the underside.
ILC7010/7011 PRODUCT SPECIFICATION
10 REV. 1.0.5 3/21/02
Mechanical Dimensions
5 Lead SC70
2.00±0.20
1.25±0.10
0.25
1.9
0.65
.5 min
0.4 min
LAND PATTERN RECOMMENDATION
SEE DETAIL A
0.10
0.00
0.25
0.10
0.45
0.10
0.20
0.9±.10
6.00°
6.00°
R0.14
R0.10
0.20
GAGE PLANE
0.425 NOMINAL
DETAIL A
NOTES:
A. CONFORMS TO EIAJ REGISTERED OUTLINE DRAWING SC88A.
B. DIMENSIONS DO NOT INCLUDE BURRS OR MOLD FLASH.
C. DIMENSIONS ARE IN MILLIMETERS.
0°-30°
0.95±.15
max 0.1
max 0.1
M
+0.10
-0.05
2.10±0.10
0.65
54
321
-A-
-B-
ILC7010/7011 PRODUCT SPECIFICATION
3/21/02 0.0m 002
Stock#DS30007010
2002 Fairchild Semiconductor Corporation
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OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
Ordering Information
Output Voltage Part Number Temperature Range Package
2.5 ILC7010AIC525X -40 to 85 °C SC70
2.6 ILC7010AIC526X -40 to 85 °C SC70
2.7 ILC7010AIC527X -40 to 85 °C SC70
2.8 ILC7010AIC528X -40 to 85 °C SC70
2.85 ILC7010AIC5285X -40 to 85 °C SC70
2.9 ILC7010AIC529X -40 to 85 °C SC70
3.0 ILC7010AIC530X -40 to 85 °C SC70
3.1 ILC7010AIC531X -40 to 85 °C SC70
3.3 ILC7010AIC533X -40 to 85 °C SC70
Output Voltage Part Number Temperature Range Package
2.5 ILC7011AIC525X -40 to 85 °C SC70
2.6 ILC7011AIC526X -40 to 85 °C SC70
2.7 ILC7011AIC527X -40 to 85 °C SC70
2.8 ILC7011AIC528X -40 to 85 °C SC70
2.85 ILC7011AIC5285X -40 to 85 °C SC70
2.9 ILC7011AIC529X -40 to 85 °C SC70
3.0 ILC7011AIC530X -40 to 85 °C SC70
3.1 ILC7011AIC531X -40 to 85 °C SC70
3.3 ILC7011AIC533X -40 to 85 °C SC70
