AIC1742-33AXV [AIC]
Low Noise, Low Quiescent Current, 150mA Linear Regulator with Noise Bypass;
| 型号： | AIC1742-33AXV |
| 厂家： | 
ANALOG INTERGRATIONS CORPORATION |
| 描述： | Low Noise, Low Quiescent Current, 150mA Linear Regulator with Noise Bypass |
| 文件： | 总12页 (文件大小：328K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AIC1742
Low Noise, Low Quiescent Current,
150mA Linear Regulator with Noise Bypass
FEATURES
DESCRIPTION
z Very Low Noise, 25μVRMS @ f=10~100kHz.
AIC1742 is a low noise, low dropout linear
regulator, and is housed in a small SOT-23-5
package. The device is in the “ON” state when
the SHDN pin is set to logic high level. A low
dropout voltage of 90mV at 50mA load current
is performed. It offers high precision output
voltage of ±2%. The quality of low quiescent
current and low dropout voltage makes this
device ideal for battery power applications.
The internal reverse bias protection eliminates
z Very Low Quiescent Current, 35μA.
z Very Low Dropout Voltage, 90mV @ 50mA.
z Active Low Shutdown Control.
z Short Circuit and Thermal Protection.
z 1.5V, 1.8V, 2.0V, 2.5V, 2.8V, 2.85V, 2.9V, 3.0V,
3.3V Output Voltage.
z Available in ±2% Output Tolerance.
z Low Profile Package: SOT-23-5
APPLICATIONS
z Cellular Telephones.
the requirement for
a
reverse voltage
protection diode. The high ripple rejection and
low noise of AIC1742 provide enhanced
performance for critical applications. The
noise bypass pin can be connected an
external capacitor to reduce the output noise
level.
z Pagers.
z Personal Communication Equipment.
z Cordless Telephones.
z Portable Instrumentation.
z Portable Consumer Equipment.
z Radio Control Systems.
z Low Voltage Systems.
z Battery Powered Systems
TYPICAL APPLICATION CIRCUIT
VIN
VIN
VOUT
V
OUT
C
IN
C
2.2 F
1 F
μ
OUT
μ
GND
BP
SHDN
C
BP
V
SHDN
0.01 F
μ
AIC1742
* CIN : TAIYO YUDEN, CEJMK107BJ105MA-T
*COUT : TAIYO YUDEN, CEJMK107BJ225Mθ-T
Low Noise Low Dropout Linear Regulator
Analog Integrations Corporation
Si-Soft Research Center
3A1, No.1, Li-Hsin Rd. I , Science Park , Hsinchu 300, Taiwan , R.O.C.
DS-1742G-01 20100121
TEL: 886-3-5772500 FAX: 886-3-5772510 www.analog.com.tw
1
AIC1742
ORDERING INFORMATION
AIC1742-XXX XXX XX
PIN CONFIGURATION
SOT-23-5
FRONT VIEW
(AXV)
PACKING TYPE
TR: TAPE & REEL
BG: BAG
1. VIN
5
1
4
3
2. GND
3. SHDN
4. BP
C: COMMERCIAL
ACV: SOT-23-5
BCV: SOT-23-5
2
5. VOUT
(BXV)
P: LEAD FREE COMMERCIAL
APV: SOT-23-5
BPV: SOT-23-5
1. VOUT
2. GND
3. VIN
4. SHDN
5. BP
G: GREE PACKAGE
AGV: SOT-23-5
BGV: SOT-23-5
OUTPUT VOLTAGE
15: 1.5V
18: 1.8V
20: 2.0V
25: 2.5V
28: 2.8V
285: 2.85V
29: 2.9V
30: 3.0V
33: 3.3V
(Of a unit of 0.1V within the voltage
range from 1.5V to 3.3V, additional
voltage versions for this product line
may be available on demand with prior
consultation with AIC.)
2
AIC1742
• SOT-23-5 Marking
Part No.
ACV
ER15
ER18
ER20
ER25
ER28
ER2J
ER29
ER30
ER33
APV
AGV
Part No.
BCV
ES15
ES18
ES20
ES25
ES28
ES2J
ES29
ES30
ES33
BPV
BGV
AIC1742-15AXV
AIC1742-18AXV
AIC1742-20AXV
AIC1742-25AXV
AIC1742-28AXV
AIC1742-285AXV
AIC1742-29AXV
AIC1742-30AXV
AIC1742-33AXV
ER15P
ER18P
ER20P
ER25P
ER28P
ER2JP
ER29P
ER30P
ER33P
ER15G
ER18G
ER20G
ER25G
ER28G
ER2JG
ER29G
ER30G
ER33G
AIC1742-15BXV
AIC1742-18BXV
AIC1742-20BXV
AIC1742-25BXV
AIC1742-28BXV
AIC1742-285BXV
AIC1742-29BXV
AIC1742-30BXV
AIC1742-33BXV
ES15P
ES18P
ES20P
ES25P
ES28P
ES2JP
ES29P
ES30P
ES33P
ES15G
ES18G
ES20G
ES25G
ES28G
ES2JG
ES29G
ES30G
ES33G
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
9V
.9V
Shutdown Terminal Voltage
Power Dissipation
500mW
Operating Temperature Range
Maximum Junction Temperature
Storage Temperature Range
-40ºC~85ºC
125°C
-65ºC~150ºC
260°C
Lead Temperature (Soldering, 10 sec)
Thermal Resistance Junction to Case
Thermal Resistance Junction to Ambient
(Assume no ambient airflow, no heatsink)
130ºC/W
220ºC/W
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
TEST CIRCUIT
Refer to TYPICAL APPLICATION CIRCUIT
3
AIC1742
ELECTRICAL CHARACTERISTICS
(TJ=25°C, unless otherwise specified) (Note1)
PARAMETER
TEST CONDITIONS
SYMBOL MIN.
TYP.
MAX.
UNIT
V
IN = VOUT+ 1V,
Quiescent Current
35
45
μA
IQ
V
SHDN=1.6V, IOUT = 0mA
VIN = VOUT+ 1V to 8V,
SHDN=0.6V, Output OFF
Standby Current
0.1
μA
ISTBY
V
GND Pin Current
2.5
3.5
mA
mA
IOUT = 50mA
IGND
IOUT
Continuous Output Current
Output Current Limit
Output Voltage Tolerance
Temperature Coefficient
Line Regulation
150
VIN = VOUT + 1V to 8V
VIN = VOUT + 1V, VOUT = 0V
VIN = VOUT + 1V, no load
150
-2
250
mA
IIL
2
%
VOUT
TC
50
2
150
5
ppm/ºC
mV
VIN = VOUT（
+ 1V to 8V
TYP）
ΔVLIR
V
IN = 5V,
Load Regulation
0.005
0.01
%/mA
ΔVLOR
IOUT = 0.1~150mA
90
160
230
350
800
IOUT = 50 mA
IOUT = 100 mA
IOUT = 150 mA
IOUT = 150 mA
Vout≥2.5V
140
200
500
Dropout Voltage
mV
V
VDROP
Vout<2.5V
Noise
Bypass
Terminal
1.25
VREF
Voltage
f=1KHz, Ripple=0.5VP-P
BP = 0.1μF
CBP = 0.1μF, f = 10~100KHz
,
Ripple Rejection
RR
65
25
dB
C
Output Noise
μVrms
еn
SHUTDOWN TERMINAL SPECIFICATIONS
SHDN=1.6V
V
ISHDN
Shutdown Pin Current
2
μA
VSHDN
（ON）
Shutdown Pin Voltage (ON) Output ON
Shutdown Pin Voltage (OFF) Output OFF
1.6
V
VSHDN
（OFF）
0.6
V
CBP = 0.1μF, COUT = 1μF,
OUT=30mA
△t
Shutdown Exit Delay Time
300
μS
I
Note 1: Specifications are production tested at TA=25°C. Specifications over the -40°C to 85°C operating
temperature range are assured by design, characterization and correlation with Statistical Quality
Controls (SQC).
Note 2: The dropout voltage is defined as VIN – VOUT when VOUT is 1% below the value of VOUT for
VIN = VOUT + 0.5V. (Only applicable for VOUT = 2.5V ~ 5V)
4
AIC1742
TYPICAL PERFORMANCE CHARACTERISTICS
60
14
AIC1742
AIC1742
50
40
30
20
10
0
12
10
8
TA=25°C
6
TA=25°C
SHDN=1.6V
V
4
I
OUT=0mA
2
0
0
20
40
60
80
100
120
140
2
3
4
5
6
7
8
9
10
Output Current (mA)
Fig. 2 Ground Current
Input Voltage (V)
Fig. 1 Quiescent Current
1.0
0.8
350
300
250
200
150
100
50
AIC1742
0.6
T=25°C
0.4
AIC1742-33
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
VIN=5V
VSHDN=1.6V
IOUT=0mA
AIC1742-15
0
0
1
2
3
4
5
6
7
-40
-20
0
20
40
60
80
100
120
Temperature (°C)
Input Voltage (V)
Fig. 3 Short-Circuit Current
Fig. 4 Output Voltage
35
30
25
20
15
10
5
50
AIC1742
VIN=5V
SHDN=1.6V
TA=25°C
AIC1742-15
SHDN=1.6V
V
40
30
20
10
0
AIC1742-33
V
TA=25°C
AIC1742-15
IOUT=150mA
IOUT=100mA
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Output Current (mA)
Input Voltage (V)
Fig. 6 Load Regulation
Fig. 5 Load Regulation
5
AIC1742
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
300
34
VSHDN=1.6V
AIC1742-33
AIC1742-25
32
30
28
26
24
22
20
18
TA=25°C
250
200
150
100
50
IOUT=150mA
IOUT=100mA
T =25°C
A
16
0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Input Voltage (V)
Output Current (mA)
Fig. 8 Dropout Voltage
Fig. 7 Load Regulation
800
700
600
500
400
300
200
100
0
100
80
60
40
20
0
AIC1742-20
AIC1742-20
C
=0.1μF
C
=0.01μF
BP
BP
C
=2.2μF Ceramic
OUT
T =25°C
A
I
=0mA
OUT
2
3
4
6
5
10 20 30 40 50 60
70 80 90 100 110 120 130 140 150
10
10
10
10
10
10
Frequency (Hz)
Fig. 10 Input Ripple Rejection
Output Current (mA)
Fig. 9 Dropout Voltage
100
AIC1742-20
100
80
60
40
20
0
AIC1742-30
80
60
40
20
0
C
=0.01μF
=0.1μF
BP
C
=0.1μF
C
=0.01μF
BP
BP
C
BP
C
=2.2μF Ceramic
OUT
C
=2.2μF Ceramic
OUT
I
=0mA
OUT
I =100mA
OUT
2
3
4
5
6
2
3
4
5
6
10
10
10
10
10
10
10
10
10
10
10
10
Frequency (Hz)
Fig. 11 Input Ripple Rejection
Frequency (Hz)
Fig. 12 Input Ripple Rejection
6
AIC1742
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
100
AIC1742-30
80
C
=0.01μF
BP
VSHDN, 2V/Div
60
40
20
0
C
=0.1μF
BP
COUT=2.2μF Ceramic
VOUT, 1V/Div
I
=100mA
OUT
2
3
4
5
6
10
10
10
10
10
10
Frequency (Hz)
Fig. 13 Input Ripple Rejection
Fig. 14 Shutdown Delay
Vin, 500mV/Div
VIN=4.5~3.5V VOUT=2.5V
VIN=3.5~4.5V VOUT=2.5V
OUT=2.2μF Ceramic
IOUT=60mA
COUT=2.2μF Ceramic
Vin, 500mV/Div
C
I
OUT=60mA
Vout, 20mV/Div
Vout, 20mV/Div
1) Ch 1: 500 mVolt 25 us
2) Ch 2: 20 mVolt 25 us
1) Ch 1: 500 mVolt 100 us
2) Ch 2: 20 mVolt 100 us
12↓
21↓
Fig. 15 Line Transient Response
Fig. 16 Line Transient Response
Vout, 20mV/Div
CH1:20mV/Div
VIN=5V VOUT=2.5V
OUT=2.2μF Ceramic
IOUT=0~100mA
VIN=5V VOUT=2.5V
OUT=2.2μF Ceramic
Iout=0~100mA
C
C
Iout, 50mA/Div
2 > 1) Ch 1: 20 mVolt 10 us
2) Ch 2: 10 mVolt 10 us
Iout, 50mA/Div
2 > 1) Ch 1: 20 mVolt 10 us
2) Ch 2: 10 mVolt 10 us
1↓
1↓
Fig. 17 Transient Response 2
Fig. 18 Load Transient Response
7
AIC1742
TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
60
C
C
=4.7μF Ceramic
=0.01μF
OUT
50
40
30
20
10
0
NB
f=10Hz to 100KHz
AIC1742-33
AIC1742-15
0.1
1
10
100
Output Current (mA)
Fig. 19 Output Noise RMS
BLOCK DIAGRAM
VIN
Control
Circuit
SHDN
-
Error
Amp
+
Bias
Circuit
1.25V
REF
VOUT
Thermal
Current
Limit
Shutdown
Disconnect
Circuit
GND
BP
PIN DESCRIPTIONS
VIN PIN
-
Power supply input pin. Bypass
BP PIN
-
Noise bypass pin. An external
bypass capacitor connecting to BP
pin to reduce noises at the output.
with a 1μF capacitor to GND.
GND PIN - Ground pin.
SHDN PIN- Active-Low shutdown input pin.
VOUT PIN - Output pin. Sources up to 150 mA.
8
AIC1742
DETAILED DESCRIPTION OF TECHNICAL TERMS
DROPOUT VOLTAGE (VDROP
)
STANDBY CURRENT (ISTBY
)
The dropout voltage is defined as the difference
between the input voltage and output voltage at
which the output voltage drops 100mV. Below
this value, the output voltage will fall as the input
voltage reduces. It depends on the load current
and junction temperature.
Standby current is the current flowing into the
regulator when the output is shutdown by setting
VSHDN at 0V and VIN at 8 V.
CURRENT LIMIT (IIL)
Current limiting of AIC1742 monitors and controls
the maximum output current, in case of a shorted
output. It protects device from the damage
resulting from any unexpected current.
LINE REGULATION
Line regulation is the ability of the regulator to
maintain a constant output voltage as the input
voltage changes. The line regulation is specified
RIPPLE REJECTION (RR)
Ripple rejection is the ability of the regulator to
reduce voltage ripple, which comes from input, at
output terminal. It is specified with a signal of
0.5VP-P at 1KHz frequency applying to input,
output capacitor at 2.2μF as well as a noise
bypass of 0.1μF. Ripple rejection, expressed in
dB, is the ratio of output ripple to input.
as the input voltage changes from VIN = VOUT
1V to VIN = 8V and IOUT = 1mA.
+
LOAD REGULATION
Load regulation is the ability of the regulator to
maintain a constant output voltage as the load
current changes. A pulsed measurement with an
input voltage set to VIN = VOUT + VDROP can
minimize temperature effects. The load
regulation is specified by the output current
ranging from 0.1mA to 150mA.
THERMAL PROTECTION
Thermal sensor protects device when the
junction temperature exceeds TJ= +155ºC. It
signals shutdown logic, turning off pass transistor
and allowing IC to cool down. After the IC’s
junction temperature cools by 15ºC, the thermal
sensor will turn the pass transistor back on.
Thermal protection is designed to protect the
device in the event of fault conditions. For a
continuous operation, do not exceed the absolute
maximum junction-temperature rating of TJ=
150ºC, or damage may occur to the device.
QUIESCENT CURRENT (IQ)
Quiescent current is the current flowing through
ground pin with no output load.
GROUND CURRENT (IGND
)
Ground current is the current flowing through the
ground pin with output load.
9
AIC1742
APPLICATION INFORMATION
INPUT-OUTPUT CAPACITORS
(TJ − TA)
(RθJB + RθBA)
PMAX =
Linear regulators require input and output
capacitors to maintain stability. Input capacitor
at 1μF with 1uF aluminum electrolytic or 2.2μF
ceramic output capacitor is recommended. And
it should be selected within the Equivalent
Series Resistance (ESR) range as shown in
the figure 20,21. ESR of ceramic capacitor is
lower and its electrical characteristics
(capacitance and ESR) vary widely over
temperature. In general, tantalum or electric
output capacitor is suggested for heavy load.
Normally, the output capacitor should be 1μF
(aluminum electrolytic) at least and rates for
operating temperature range. Note that it’s
important to check selected manufactures
electrical characteristics (capacitance and ESR)
over temperature.
Where TJ-TA is the temperature difference
between the die junction and the surrounding
air, RθJB is the thermal resistance of the
package, and RθBA is the thermal resistance
through the PCB, copper traces, and other
materials to the surrounding air.
As a general rule, the lower temperature is, the
better reliability of the device is. So the PCB
mounting pad should provide maximum
thermal conductivity to maintain low device
temperature.
GND pin performs a dual function of providing
an electrical connection to ground and
channeling heat away. Therefore, connecting
the GND pin to ground with a large pad or
ground plane would increase the power
dissipation and reduce the device temperature.
NOISE BYPASS CAPACITOR
0.01μF bypass capacitor at BP pin reduces
output voltage noise. And the BP pin has to
connect a capacitor to GND.
POWER DISSIPATION
The maximum power dissipation of AIC1742
depends on the thermal resistance of its case
and circuit board, the temperature difference
between the die junction and ambient air, and
the rate of airflow. The rate of temperature rise
is greatly affected by the mounting pad
configuration on the PCB, the board material,
and the ambient temperature. When the IC
mounting with good thermal conductivity is
used, the junction temperature will be low even
when large power dissipation applies.
The power dissipation across the device is
P = IOUT (VIN-VOUT).
The maximum power dissipation is:
10
AIC1742
100
10
100
10
C
OUT
=4.7 F
μ
1
C
=1μF
C
=2.2 F
μ
OUT
OUT
Stable Region
Stable Region
0.1
0.1
0.01
0.01
0
20
40
60
80
100
120
140
0
20
40
60
80
100
120
140
Load Current (mA)
Fig. 20 Stable Region with extra Serial Resistor vs.
Load Current
Load Current (mA)
Fig. 21 Region of Stable C ESR vs. Load Current
OUT
11
AIC1742
PHYSICAL DIMENSIONS
z
SOT-23-5 (unit: mm)
D
S
Y
M
B
O
L
SOT-23-5
MILLIMETERS
MIN.
0.95
MAX.
A
1.45
A1
A2
b
0.05
0.90
0.30
0.08
0.15
1.30
0.50
0.22
c
D
E
2.80
2.60
3.00
3.00
e
A
A
e1
E1
e
1.50
1.70
SEE VIEW B
0.95 BSC
1.90 BSC
e1
b
L
0.30
0°
0.60
8°
WITH PLATING
L1
q
0.60 REF
BASE METAL
SECTION A-A
GAUGE PLANE
SEATING PLANE
L
L1
VIEW B
Note : 1. Refer to JEDEC MO-178AA.
2. Dimension "D" does not include mold flash, protrusions
or gate burrs. Mold flash, protrusion or gate burrs shall not
exceed 10 mil per side.
3. Dimension "E1" does not include inter-lead flash or protrusions.
4. Controlling dimension is millimeter, converted inch
dimensions are not necessarily exact.
Note:
Information provided by AIC is believed to be accurate and reliable. However, we cannot assume responsibility for use of any
circuitry other than circuitry entirely embodied in an AIC product; nor for any infringement of patents or other rights of third parties
that may result from its use. We reserve the right to change the circuitry and specifications without notice.
Life Support Policy: AIC does not authorize any AIC product for use in life support devices and/or systems. Life support devices or
systems are devices or systems which, (I) are intended for surgical implant into the body or (ii) support or sustain life, and 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 to the user.
12
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