AIC AIC1730-285CQ Low noise low dropout, 150ma linear regulator Datasheet

AIC1730
Low Noise Low Dropout, 150mA Linear Regulator
n FEATURES
n DESCRIPTION
l
Available in ±2% Output Tolerance.
The AIC1730 is a low noise, low dropout linear
l
1.8V to 3.3V Output Voltage with 0.1V Increment.
regulator, housed in a small SOT-23-5 & SOT-23-
l
Active Low Shutdown Control.
l
Very Low Quiescent Current.
l
Very Low Dropout Voltage.
when the SHDN pin is set to a logic high level.
l
Miniature Package (SOT-23-5 & SOT-23-6W)
An internal P-MOSFET pass transistor is used to
l
Short Circuit and Thermal Protection.
achieve a low dropout voltage of 90mV at 50mA
l
Very Low Noise.
load current. It offers high precision output voltage
6W package. The device is in the “ON” state
n APPLICATIONS
of ±2%. The very low quiescent current and low
dropout voltage make this device ideal for battery
l
Cellular Telephones.
l
Pagers.
l
Personal Communication Equipment.
l
Cordless Telephones.
reverse voltage protection diode. The high ripple
l
Portable Instrumentation.
rejection
l
Portable Consumer Equipment.
performance for critical applications. An external
l
Radio Control Systems.
l
Low Voltage Systems.
l
Battery Powered Systems.
powered applications. The internal reverse bias
protection eliminates the requirement for a
and
low
noise
provide
enhanced
capacitor can be connected to the noise bypass
pin to reduce the output noise level.
n TYPICAL APPLICATION CIRCUIT
VIN
VIN
VOUT
+
CIN
1µF
COUT
1µF
GND
SHDN
V
VOUT
+
BP
CBP
SHDN
AIC1730
0.1µF
Low Noise Low Dropout Linear Regulator
Analog Integrations Corporation
4F, 9, Industry E. 9th Rd, Science Based Industrial Park, Hsinchu Taiwan, ROC
DS-1730-00
TEL: 886-3-5772500
May 22, 01
FAX: 886-3-5772510
www.analog.com.tw
1
AIC1730
n ORDERING INFORMATION
AIC1730-XCX
ORDER NUMBER
PIN CONFIGURATION
FRONT VIEW
PACKAGE TYPE
V: SOT-23-5
Q: SOT-23-6W
OUTPUT VOLTAGE
18: 1.8V
.
.
.
285: 2.85V
.
.
.
33: 3.3V
AIC1730-18CV
:
:
:
AIC1730-33CV
(SOT-23-5)
AIC1730-18CQ
:
:
:
AIC1730-33CQ
(SOT-23-6W )
VOUT
BP
5
4
1
2
3
VIN GND SHDN
FRONT VIEW
VIN GND VOUT
6
5
1
2
SHDN GND
4
3
BP
The output voltage is available
by 0.1V per step.
n
ABSOLUTE MAXIMUM RATINGS
Supply Voltage
Power Dissipation
.................… … … … … … … … … … … … ..… … … … … … … ....................12V
.............… … … … … … … … … … … … … … … .… … … … … .............500mW
Operating Temperature Range
.… … … … … … … … … … … … … … … … … … … .....-40ºC~85ºC
Storage Temperature Range
................… … … … … … … … … … … … … … .........-65ºC~150ºC
Shutdown Terminal Voltage
..… … … … … … … … … … … … … … … … … … … … … ..............12V
Noise Bypass Terminal Voltage
.… … … … … … … … … … … .… … … … … … … … … ..............5V
2
AIC1730
n ELECTRICAL CHARACTERISTICS
(CIN=1µF , COUT=10µF, TJ=25°C, unless
otherwise specified)
PARAMETER
TEST CONDITIONS
SYMBOL
Quiescent Current
IOUT = 0mA, VIN = 3.6~12V
IQ
Standby Current
VIN = 3.6~8V , output OFF
ISTBY
GND Pin Current
IOUT = 0.1~150mA
IGND
Continuous Output Current
VIN = VOUT + 1V
IOUT
Output Current Limit
VIN = VOUT + 1V , VOUT = 0V
Output Voltage Tolerance
VIN = VOUT + 1V , no load
Temperature Coefficient
Line Regulation
VIN = VOUT(TYP) + 1V to
MIN.
TYP.
MAX.
UNIT
55
80
µA
0.1
µA
80
µA
150
mA
55
IIL
150
VOUT
-2
220
mA
2
%
TC
50
150
ppm/ºC
∆VLIR
2
7
mV
∆VLOR
7
25
mV
90
160
mV
140
230
mV
200
350
mV
700
mV
VOUT(TYP) + 6V
Load Regulation
VIN = 5V ,
IOUT = 0.1~150mA
Dropout Voltage (1)
IOUT = 50 mA
VOUT≥2.5V
VDROP1
IOUT = 100 mA
IOUT = 150 mA
Dropout Voltage (2)
IOUT=150 mA
VOUT <2.5V
Noise Bypass Terminal Voltage
Output Noise
CBP = 0.1µF , f = 1KHz
VDROP2
VREF
1.23
V
?n
0.46
µV
Hz
VIN = 5V
SHUTDOWN TERMINAL SPECIFICATIONS
Shutdown Pin Current
I SHDN
Shutdown Pin Voltage (ON)
Output ON
V SHDN
(ON)
Shutdown Pin Voltage (OFF)
Output OFF
V SHDN
(OFF)
Shutdown Exit Delay Time
CBP = 0.1µF , COUT = 1µF,
IOUT=30mA
0.1
1.6
µA
V
0.6
V
△t
300
µS
TSD
155
ºC
THERMAL PROTECTION
Thermal Shutdown Temperature
3
AIC1730
n TYPICAL PERFORMANCE CHARACTERISTICS
LINE TRANSIENT RESPONSE
LINE TRANSIENT RESPONSE
IOUT=1mA,CBP=0.1µ F
IOUT=1mA,CBP =0.1 µ F
COUT=10µ F
COUT =1µF
VOUT
V OUT
50mV/DIV
50mV/DIV
VOUT+3V
VOUT+3V
VOUT+1V
VOUT+1V
VIN
VIN
2V/DIV
2V/DIV
TIME (100 µS/DIV)
TIME (100µ S/DIV)
LINE TRANSIENT RESPONSE
LINE TRANSIENT RESPONSE
IOUT =1mA,CBP =1µF
IOUT =1mA,CBP =1µF
COUT =1 µ F
COUT=10µ F
V OUT
VOUT
50mV/DIV
50mV/DIV
VOUT+3V
V OUT +1V
VOUT +3V
V IN
VOUT+1V
VIN
2V/DIV
2V/DIV
TIME (100 µS/DIV)
TIME (100 µS/DIV)
SHUTDOWN EXIT DELAY
SHUTDOWN EXIT DELAY
IOUT=30mA,CBP =0.01µ F
V OUT
IOUT =30mA,CBP =0.1 µF
V OUT
C OUT =3.3 µF
2V/DIV
COUT=3.3µF
2V/DIV
TIME (250 µS/DIV)
V SHDN
VSHDN
2V/DIV
2V/DIV
TIME (250µ S/DIV)
4
AIC1730
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
SHUTDOWN EXIT DELAY
SHUTDOWN EXIT DELAY
IOUT =10mA,CBP =0.1 µF
IOUT =10mA,CBP =0.1µF
VOUT
COUT=1 µF
2V/DIV
2V/DIV
VSHDN
V SHDN
2V/DIV
2V/DIV
COUT=10 µF
TIME (250µ S/DIV)
V OUT
TIME (250 µS/DIV)
LOAD TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
CBP =0.1µF
CBP =0.1µF
COUT =1µ F
COUT =10µ F
VOUT
VOUT
20mV/DIV
20mV/DIV
IOUT=60mA
IOUT=60mA
IOUT =0mA
IOUT=0mA
I OUT
I OUT
TIME (1mS/DIV)
TIME (1mS/DIV)
LOAD TRANSIENT RESPONSE
LOAD TRANSIENT RESPONSE
CBP =0.1 µ F
CBP =0.1µ F
COUT=1 µF
COUT =10 µF
VOUT
VOUT
20mV/DIV
20mV/DIV
IOUT =90mA
IOUT=90mA
I OUT=0mA
IOUT=0mA
I OUT
TIME (1mS/DIV)
I OUT
TIME (1mS/DIV)
5
AIC1730
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Ground Current vs. Input Voltage (V OUT=3.0V)
Dropout Voltage vs. Output Current
250
70
I OUT=50mA
60
VOUT=3.0V
200
I OUT =0mA
I GND (uA)
V DROP (mV)
50
150
100
40
30
20
50
10
0
0
50
100
0
150
0
1
2
3
4
5
6
V IN (V)
I OUT (mA)
Ground Current vs. Temperature
Quiescent Current (ON Mode) vs. Input Voltage
70
80
I OUT=90mA
68
70
66
60
64
I Q(µA)
I GND (mA)
I OUT =0mA
50
40
IO UT=60mA
62
60
IOUT=30mA
58
30
56
20
54
10
0
0
52
2
4
6
8
10
12
14
50
-40
16
-20
0
20
Shutdown Voltage vs. Temperature
60
80
100
120
140
160
Short Circuit Current vs. Input Voltage
2.0
400
1.5
300
I OUT (mA)
Output ON
VSHDN (V)
40
TA(°C)
VIN (V)
1.0
200
VOUT is connected to GND
0.5
100
Output OFF
0.0
-40
0
0
40
TA(°C)
80
120
0
2
4
6
8
VIN (V)
6
AIC1730
n TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
Ground Current vs. Output Current
70
I GND (µ A)
65
60
55
0
50
100
150
I OUT (mA)
n BLOCK DIAGRAM
VIN
Current
Limiting
BP
1.23V
REF
SHDN
Power
Shutdown
+
Error
Amp.
VOUT
Thermal
Shutdown
GND
7
AIC1730
n PIN DESCRIPTIONS
SOT-23-5
PIN 1 : VIN
SOT-23-6W
-
PIN 2 : GND -
Power supply input pin. Bypass
PIN 1 :
SHDN - Active-Low shutdown input pin.
with a 1µF capacitor to GND
PIN 2 :
GND
Ground
functions
pin.
as
This
a
pin
also
Ground
functions
pin.
as
This
a
pin
heatsink.
also
To
To
maximize power dissipation, use
maximize power dissipation, use
of a large pad or the circuit-
of a large pad or the circuit-
board
board
recommended.
ground
heatsink.
-
plane
is
recommended.
PIN 3 :
BP
ground
plane
is
- Noise bypass pin. An external
PIN 3 : SHDN - Active-Low shutdown input pin.
bypass capacitor connected to
PIN 4 : BP
the BP pin reduces noises at the
- Noise bypass pin. An external
output.
bypass capacitor connected to
the BP pin reduces noises at the
PIN 4 :
VOUT
- Output pin. Sources up to 150
output.
PIN 5 : VOUT - Output pin. Sources up to 150
mA.
PIN 5 :
GND
-
mA.
Ground
functions
pin.
as
This
a
pin
heatsink.
also
To
maximize power dissipation, use
of a large pad or the circuitboard
ground
plane
is
recommended.
PIN 6 :
VIN
-
Power supply input pin. Bypass
with a 1µF capacitor to GND
n DETAILED DESCRIPTION OF TECHNICAL TERMS
fall as the input voltage is reduced. It depends on the
OUTPUT VOLTAGE (VOUT)
The AIC1730 provides factory-set output voltages
from 1.8V to 3.3V, in 100mV increments. The output
voltage is specified with VIN = VOUT (TYP) + 1V and
IOUT = 0mA
DROPOUT VOLTAGE (VDROP)
The dropout voltage is defined as the difference
between the input voltage and output voltage at
load current and junction temperature. The dropout
voltage is specified at which the output voltage drops
100mV below the value measured with a 1V
difference.
CONTINUOUS OUTPUT CURRENT (IOUT)
Normal rated output current. This is limited by
package power dissipation.
which point the regulator starts to fall out of
regulation. Below this value, the output voltage will
8
AIC1730
LINE REGULATION
THERMAL PROTECTION
Line regulation is the ability of the regulator to
The thermal sensor protects the device when the
maintain a constant output voltage as the input
junction temperature exceeds TJ = +155ºC. It signals
voltage changes. The line regulation is specified as
the shutdown logic, turning off the pass transistor
the input voltage is changed from VIN = VOUT + 1 V to
and allowing the IC to cool. After the IC’s junction
VIN = VOUT + 6 V and IOUT = 1mA.
temperature cools by 15ºC, the thermal sensor will
turn on the pass transistor again. Thermal protection
LOAD REGULATION
Load regulation is the ability of the regulator to
maintain a constant output voltage as the load
current changes. To minimize temperature effects, it
is a pulsed measurement with the input voltage set to
is designed to protect the device in the event of fault
conditions. For continuous operation do not exceed
the absolute maximum junction-temperature rating of
TJ = 150ºC, or damage may occur to the device.
VIN = VOUT + 1 V. The load regulation is specified
under the output current step of 0.1mA to 150mA.
n APPLICATION INFORMATION
QUIESCENT CURRENT (IQ)
INPUT-OUTPUT CAPACITORS
The quiescent current is the current flowing through
Linear regulators require input and output
the ground pin under no load.
capacitors
to
maintain
stability.
The
recommended minimum value of input capacitor
is 0.22µF. The output capacitor should be
GROUND CURRENT (IGND)
selected within the Equivalent Series Resistance
Ground current is the current flowing through the
ground pin under loading.
(ESR) range shown in the graphs below for
stability. Because the ceramic capacitor’s ESR is
lower
and
its
electrical
STANDBY CURRENT (ISTBY)
(capacitance
and
Standby current is the current flowing into the
temperature, a tantalum output capacitor is
regulator when the output is shutdown by setting
recommended, especially for heavier load. In
V SHDN = 0V, VIN = 8 V.
general, the capacitor should be at least
ESR)
vary
characteristics
widely
over
1µF(tantalum) and be rated for the actual
ambient operating temperature range.
CURRENT LIMIT (IIL )
The AIC1730 include a current
Note: It is very important to check the selected
limiter,
which
monitors and controls the maximum output current to
manufactures’
electrical
characteristics
(capacitance and ESR) over temperature.
be 300mA typically if the output is shorted to ground.
This can protect the device from being damaged.
9
AIC1730
PMAX = (TJ -TA)/(θJB + θBA)
NOISE BYPASS CAPACITOR
Use a 0.1µF bypass capacitor at BP for low
where TJ -TA
output voltage noise. Increasing the capacitance
values
performance
above
1µF
advantage
and
provide
no
are
not
the
temperature
difference
between the die junction and the surrounding air,
such as 1µF will decrease the output noise,
however,
is
θJB is the thermal resistance of the package, and
θBA is the thermal resistance through the PCB,
copper traces, and other materials to the
recommended.
surrounding air.
As a general rule, the lower the temperature is,
POWER DISSIPATION
the better the reliability of the device is. So the
The maximum power dissipation of AIC1730
PCB mounting pad should provide maximum
depends on the thermal resistance of the case
thermal conductivity to maintain low device
and circuit board, the temperature difference
temperature.
between the die junction and ambient air, and
The GND pin performs the dual function of
the rate of air flow. The rate of temperature rise is
providing an electrical connection to ground and
greatly
pad
channeling heat away. Therefore, connecting the
configuration on the PCB, the board material,
GND pin to ground with a large pad or ground
and the ambient temperature. When the IC
plane would increase the power dissipation and
mounting with good thermal conductivity is used,
reduce the device temperature.
affected
by
the
mounting
the junction will be low even if the power
dissipation is great.
The power dissipation across the device is P =
IOUT (V IN -V OUT).
The maximum power dissipation is:
100
100
COUT=2.2µ F
COUT=1µF
10
ESR(Ω)
ESR(Ω)
10
1
STABLE REGION
0.1
1
STABLE REGION
0.1
0.01
0.01
50
100
I OUT(mA)
150
50
100
150
IOUT (mA)
10
AIC1730
100
100
COUT=10µ F
COUT =3.3 µF
10
ESR(Ω)
ESR(Ω )
10
1
1
STABLE REGION
STABLE REGION
0.1
0.1
0.01
50
100
150
0.01
50
100
I
150
IOUT (mA)
(mA)
n PACKAGE DIMENSIONS
l
SOT-23-5 (unit: mm)
C
D
L
H E
θ1
e
A
A2
MIN
MAX
A
1.00
1.30
A1
—
0.10
A2
0.70
0.90
b
0.35
0.50
C
0.10
0.25
D
2.70
3.10
E
1.40
1.80
e
A1
b
l
SYMBOL
1.90 (TYP)
H
2.60
3.00
L
0.37
—
θ1
1°
9°
SOT-23-5 Marking
Part No.
AIC1730-18CV
AIC1730-19CV
AIC1730-20CV
AIC1730-21CV
AIC1730-22CV
AIC1730-23CV
AIC1730-24CV
AIC1730-25CV
AIC1730-26CV
Marking
EC18
EC19
EC20
EC21
EC22
EC23
EC24
EC25
EC26
Part No.
AIC1730-27CV
AIC1730-28CV
AIC1730-285CV
AIC1730-29CV
AIC1730-30CV
AIC1730-31CV
AIC1730-32CV
AIC1730-33CV
Marking
EC27
EC28
EC2J
EC29
EC30
EC31
EC32
EC33
11
AIC1730
l
SOT-23-6W (unit: mm)
C
D
L
H E
θ1
e
A
A2
MIN
MAX
A
1.00
1.30
A1
—
0.10
A2
0.70
0.90
b
0.35
0.50
C
0.10
0.25
D
2.70
3.10
E
1.60
2.00
e
A1
b
l
SYMBOL
1.90 (TYP)
H
2.60
3.00
L
0.37
—
θ1
1°
9°
SOT-23-6W Marking
Part No.
AIC1730-18CQ
AIC1730-19CQ
AIC1730-20CQ
AIC1730-21CQ
AIC1730-22CQ
AIC1730-23CQ
AIC1730-24CQ
AIC1730-25CQ
AIC1730-26CQ
Marking
EB18
EB19
EB20
EB21
EB22
EB23
EB24
EB25
EB26
Part No.
AIC1730-27CQ
AIC1730-28CQ
AIC1730-285CQ
AIC1730-29CQ
AIC1730-30CQ
AIC1730-31CQ
AIC1730-32CQ
AIC1730-33CQ
Marking
EB27
EB28
EB2J
EB29
EB30
EB31
EB32
EB33
12
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