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www.fairchildsemi.com
ILC7071
100mA SOT-23-5 Low Noise CMOS RF-LDO™
Regulator
Features
•
•
•
•
•
•
•
•
1% output voltage accuracy
Low noise
Only 90
µ
A ground current at 100mA load
Ripple rejection up to 75 dB at 1kHz
Excellent line and load transient response
Guaranteed to 100mA output current
Industry standard five lead SOT-23 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
General Description
The ILC7071 is an 100mA, 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, low
noise and power handling capability. The ILC7071 offers a
quiescent current of less than 100µA, a logic level enable
(regulator EN) pin, 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 40µ
V
RMS
and 1% output voltage accuracy, the ILC7071 is
ideally suited for communications and personal electronics
applications.
Applications
•
•
•
•
Cellular phones
Wireless communicators
PDAs/palmtops/organizers
Battery powered portable electronics
Block Diagram
V
IN
Error
Amplifier
Voltage
Reference
Trans-
conductance
Amplifier
CN
+
V
OUT
–
EN
Thermal
Shut
Down
GND
Figure 1.
REV. 1.0.2 7/16/03
ILC7071
PRODUCT SPECIFICATION
Test circuit
V
IN
V
IN
C
IN
EN
GND
CN
C
N
V
OUT
C
OUT
R
L
Figure 2.
Pin Configuration
V
OUT
5
CN
4
ILC7071
1
2
3
V
IN
GND EN
SOT-23-5
Figure 3.
Pin Definition
Pin Number
1
2
3
4
5
Pin Name
V
IN
GND
EN
CN
V
OUT
Supply voltage input
Ground of the IC
Enable input.
High level enables V
OUT
while Low level commands shutdown mode
and discharge C
OUT
to GND
Optional noise bypass capacitor
Voltage output
. Regulated output voltage
Pin Function Description
2
REV. 1.0.2 7/16/03
PRODUCT SPECIFICATION
ILC7071
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.
Parameter
Supply Voltage:
EN Input Voltage
Output Voltage
Junction Temperature (T
J
)
Storage Temperature
Lead Soldering Temperature, 10 seconds
Power Dissipation (P
D
)
-40
-0.3
-0.3
Min.
Max.
10
V
IN
+ 0.3
V
IN
+ 0.3
125, Internally limited
150
300
150
Units
V
V
V
°C
°C
°C
mW
Recommended Operating Conditions
Parameter
Supply Voltage V
DD
Peak Output Current
Ambient Operating Temperature
Conditions
V
IN
to GND
I
OUT
to GND,
tpw=2mS
T
A
-40
Min.
V
OUT
+V
DO
Typ.
V
OUT
+1
Max.
V
OUT
+4
150
85
Units
V
mA
°
C
REV. 1.0.2 7/16/03
3
ILC7071
PRODUCT SPECIFICATION
Electrical Specifications
V
IN
=V
OUT
+1V, I
OUT
=1mA, V
EN
=2V and T
A
= +25°C using circuit in Figure 2 with C
IN
=C
OUT
=1µF, C
N
=0,
unless otherwise specified
Parameter
Output Voltage
Ground pin Current
Line Regulation
Symbol
V
OUT
I
GND
∆
V
OUT
/
V
OUT
/
∆
V
IN
∆
V
OUT
/
V
OUT
V
DO
I
OUT
= 10mA
I
OUT
= 100mA
V
OUT
+ 2V
≥
VIN
≥
V
OUT
+ 1V
I
OUT
=1 to 100mA
I
OUT
= 10mA, V
OUT
> 2.8V
I
OUT
= 20mA, V
OUT
> 2.8V
I
OUT
= 100mA, V
OUT
> 2.8V
Shutdown
(OFF) current
EN Input Voltage
EN Input Current
Output Noise Voltage
I
OFF
V
EN
I
EN
eN
V
EN
= 0
High = ON state
Low = OFF state
V
EN
= 0.6V
V
EN
= 2V
BW = 300Hz to 50kHz
C
IN
= C
OUT
= 2.2uF
I
OUT
= 10mA, CN = 10nF
C
OUT
= 4.7uF, f = 120Hz
I
OUT
= 80mA
∆
V
IN
= 1V,I
OUT
= 10mA,
tr/tf = 2uS
V
EN
= 0
2
0.6
0.3
1
40
µ
V
RMS
dB
mV
mV
k
Ω
µ
A
Conditions
Min.
0.99
VOUTnom
Typ.
VOUT
nom
70
90
0.017
Max.
1.01
VOUTnom
90
110
0.075
%/V
Units
V
µ
A
Load
Regulation
Dropout Voltage.
Notes 1and 2
0.15
25
50
275
10
0.25
30
60
320
40
%
mV
nA
V
Ripple Rejection
Dynamic Line Regulation
PSRR
∆
V
OUT
(line)
65
10
20
1.5
Dynamic Load Regulation
∆
V
OUT
(load)
∆
I
OUT
= 100mA, tr < 5µS
Resistance Discharge in
OFF state
R
DISC
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.
4
REV. 1.0.2 7/16/03
