www.fairchildsemi.com
ILC7071
100mA SOT-23-5 Ultra Low Noise CMOS RF-LDO™
Regulator
Features
• 1% output voltage accuracy
• Only 10µV
RMS
noise from 300Hz to 100kHz
• Uses low ESR ceramic or Tantalum output capacitor to
minimize noise and output ripple
• Only 90µA ground current at 100mA load
• Ripple rejection up to 70dB at 1kHz, 60dB at 1MHz
• Excellent line and load transient response
• Guaranteed to 100mA output current
• Industry standard five lead SOT-23-5 packages
• Fixed 2.8V, 3.0V, 3.3V,3.6V, 4.7V, 5.0V, output voltage
options
• Metal mask option available for custom voltages between
2.5V and 8V
Description
The ILC7071 is a 100mA, Ultra Low Noise, Low Dropout
(LDO) linear regulator, designed and processed in Impala’s
proprietary CMOS process 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 ILC7071 offers a quiescent current
of less than 100µA, a logic level enable (regulator on/off) pin,
and a low dropout voltage of 50mV at 10mA. With better than
70dB (1kHz) of ripple rejection, ultra low noise of 10µV
RMS
and 1% output voltage accuracy, the ILC7071 sets a new
standard in linear regulators for communications and
personal electronics applications.
The ILC7071 is designed to operate with small, low cost,
ceramic capacitors and is stable over a wide range of ESR
values. In addition to the output capacitor, the ILC7071
requires only a 1µF input capacitor. The enable pin can be
tied to V
IN
for easy device layout. The ILC7071 is available
in a number of fixed output voltages ranging from 2.5V to
8V. An adjustable version will be available shortly.
The ILC7071 is ideally suited for use in small size cordless
and cellular handsets as well as many other low battery
powered electronic devices. Please contact Fairchild for
samples and application information.
Applications
•
•
•
•
Cellular phones
Wireless communicators
PDAs / palmtops / organizers
Battery powered portable electronics
Typical Applications
V
OUT
5
4
C
BYPASS
C
OUT
ILC7071AIM5
1
2
3
ON/OFF
+
-
C
IN
Rev. 1.5
©2001 Fairchild Semiconductor Corporation
ILC7071
Pin Assignments
5
4
ILC7071AIM5
1
2
3
Pin Definitions
Pin Number
1
2
Pin Name
V
IN
GND
On/Off
C
NOISE
V
OUT
Pin Function Description
Connect Directly to Supply
Ground pin. Local ground for C
OUT
On > 1.0V, off < 0.4V. Can be connected to V
IN
Noise Bypass Capacitor. Do Not Pin Connect Directly to GND
Regulator Output, Connect C
OUT
between this pin and the GND (pin 3)
3
4
5
Absolute Maximum Ratings
Parameter
Input Voltage ILC7071
ON/OFF Input Voltage
Output Current
Output Voltage
Package Power Dissipation
Maximum Junction Temp. Range
Storage Temperature
Operation Ambient Temperature
Symbol
V
IN
V
ON/OFF
I
OUT
V
OUT
P
D
T
J(MAX)
T
STG
T
AMB
Ratings
-0.3 to 9V
-0.3 to V
IN
Short Circuit Protected
-0.3 to V
IN
+0.3
TBD
-40 to +125
-40 to +125
-40 to +85
Units
V
V
mA
V
mW
°C
°C
°C
©2001 Fairchild Semiconductor Corporation
2
ILC7071
Electrical Characteristics ILC7071
Unless otherwise specified, all limits are at T
A
= 25°C, V
IN
= V
OUT(NOM)
+ 1V, I
OUT
= 1mA, C
OUT
= 1µF, V
ON/OFF
= 2V
Parameter
Input Voltage Range
Output Voltage Accuracy
Line Regulation
Dropout Voltage (Note 3)
Symbol
V
IN
Conditions
Typ.
2.5-8
±1
0.007
0.1
50
70
235
66
67
90
0.1
1.5
0.6
0.3
1
120
TBD
Units
V
%
%/V
mV
Ground Pin Current
Shutdown (OFF) Current
ON/OFF Input Voltage
ON/OFF Pin Input Current
(Note 5)
Peak Output Current (Note 4)
Output Noise Voltage (RMS)
Ripple Rejection
Dynamic Line Regulation
Dynamic Load Regulation
Short Circuit Current
Resistance Shutdown
Discharge
Notes:
V
OUT (NOM)
+ < 8V
∆
V
OUT
/
(V
OUT
*
∆
V
IN
)
∆
V
IN
V
OUT
I
OUT
= 10µa
V
DO
I
OUT
= 10mA
I
OUT
= 20mA
I
OUT
= 100mA
I
OUT
= 0mA
I
GND
I
OUT
= 10mA
I
OUT
=100mA
V
ON/OFF
= 0V
I
ON/OFF
V
ON/OFF
High = Regulator On
Low = Regulator Off
V
ON/OFF
0.6V Regulator OFF
I
IN ON/OFF
V
ON/OFF
2V Regulator ON
V
OUT
Š 0.95V
OUT(NOM)
, t
PW
= 2ms
I
OUT (peak)
BW = 300Hz to 50kHz, C
IN
= 1µF
e
N
C
NOISE
= 0.01µF, C
OUT
= 1.0µF,
I
OUT
= 10mA
Freq = 1kHz
∆
V
OUT
/
∆
V
IN
C
OUT
= 1.0µF
I
OUT
= 100mA
Freq = 10kHz
Freq = 1MHz
∆
V
OUT(line)
V
IN
: V
OUT(NOM)
+ 1V to V
OUT(NOM)
+
2V, tr/tf = 2µs; I
OUT
= 80mA
∆
V
OUT(load)
I
OUT
: 1mA to 100mA; tr,5µS
I
SC
V
OUT
= 0V
µA
µA
V
µA
mA
µV
RMS
70
50
65
14
40
200
1.5
dB
mv
mv
mA
k
Ω
1: Absolute maximum ratings indicate limits which when exceeded may result in damage to the component. Electrical
specifications do not apply when operating the device outside of its rated operating conditions.
2: Specified Min/Max limits are production tested or guaranteed through correlation based on statistical control methods.
Measurements are taken at constant junction temperature as close to ambient as possible using low duty pulse testing.
3: Dropout voltage is defined as the input to output differential voltage at which the output voltage drops 2% below the nominal
value measured with a 1V differential.
4: Guaranteed by design
5: The device’s shutdown pin includes a 2MΩ internal pull down resistor connected to ground.
©2001 Fairchild Semiconductor Corporation
3
ILC7071
Package Dimensions
Dimensions shown in inches and (mm)
5-Lead plastic surface mount (SOT-23-5)
0.122 (3.10)
0.106 (2.70)
0.071 (1.80)
0.055 (1.40)
0.118 (3.00)
0.102 (2.60)
PIN 1
0.037 (0.95) BSC
0.055 (1.40)
0.0393 (1.0)
0.057 (1.45)
0.035 (0.90)
10°
0°
0.0217 (0.55)
0.0138 (0.35)
0.0059 (0.15)
0.0019 (0.05)
0.019 (0.50)
0.0138 (0.35)
SEATING
PLANE
0.0078 (0.2)
0.0031 (0.08)
SOT-23-5 Package Markings ILC7071AIM5-xx
Output Voltage
2.8
3.0
3.3
3.6
4.7
5.0
Grade
A
A
A
A
A
A
Order Information
ILC7071AIM5-28
ILC7071AIM5-30
ILC7071AIM5-33
ILC7071AIM5-36
ILC7071AIM5-47
ILC7071AIM5-50
Supplied As:
3K Units on Tape and Reel
3K Units on Tape and Reel
3K Units on Tape and Reel
3K Units on Tape and Reel
3K Units on Tape and Reel
3K Units on Tape and Reel
Ordering Information
(T
A
= -40°C to +85°C)
Product Number
ILC7071AIM5-X
Package
100mA, fixed voltage, SOT-23 package
©2001 Fairchild Semiconductor Corporation
4
ILC7071
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.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
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.
www.fairchildsemi.com
10/15/01 0.0m 001
Stock#DSxxxxxxxx
2001
Fairchild Semiconductor Corporation
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.
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