AIC1952
AIC1952
Dual Output Low ESR Cap. Low-Dropout
300mA Linear Regulator
 FEATURES







 DESCRIPTION
Up to 300mA Output Current for Each LDO.
Low Quiescent Current : 50µA (VOUT1 and
VOUT2 Enable Mode).
Low Dropout:200mV at 300mA Load Current
and 3.3V Output Voltage.
High PSRR:70dB at 1kHz.
The AIC1952 is a dual output linear regulator
in a tiny SOT-23-6, DFN 6L-2X2 package. It is
optimized for low ESR ceramic capacitors
operation and up to 300mA continuous current
on each output.
Independent Shutdown Controls.
Current Limit and Thermal Protection.
Tiny SOT-23-6, DFN 6L-2X2 Package.
The AIC1952 offers high precision output
voltage of 2%. At 300mA load current, a
200mV dropout is performed when output
voltage is equal to 3.3V. The quality of low
quiescent current and low dropout voltage
makes this device ideal for battery power
applications. The high ripple rejection and low
noise of the AIC1952 provide enhanced
performances for critical applications such as
cellular phones, and PDAs.
 APPLICATIONS




Cellular Phones.
PDAs.
Digital Still Cameras.
Portable Consumer Equipments.
The AIC1952 includes current limit and thermal
shutdown protection. Each of the output is
controlled independently.
 TYPICAL APPLICATION CIRCUIT
VIN
VOUT1
1
CIN
1F
EN1
VOUT1
6
2
VIN
GND
5
3
EN2
VOUT2
4
AIC1952
Analog Integrations Corporation
COUT1
1F
VOUT2
COUT2
1F
Si-Soft Research Center
DS-1952G-04 20121101
3A1, No.1, Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan, R.O.C.
TEL: 886-3-5772500,
FAX: 886-3-5772510
www.analog.com.tw
1
AIC1952
 ORDERING INFORMATION
AIC1952-X X X XXX XX
PACKAGE TYPE
PACKING TYPE
TR: TAPE & REEL
BG: BAG
PACKAGE TYPE
G6T: SOT-23-6
G6A: SOT-23-6
DA: DFN 6L-2X2
FRONT VIEW
VOUT1 GND VOUT2
A
:
:
Z
3
4
5
6
7
8
VOUT2
0.8V
:
:
3.3V
2.85V
3.4V
3.5V
3.6V
3.7V
3.8V
6
G6T
(SOT-23-6)
5
4
SOT-23-6
1
2
3
EN1 VIN EN2
FRONT VIEW
G: GREEN PACKAGE
OUTPUT2 VOLTAGE:
PIN CONFIGURATION
VOUT1 VIN EN 1
6
G6A
(SOT-23-6)
5
4
SOT-23-6
1
2
3
VOUT2 GND EN2
FRONT VIEW
VOUT2 VOUT1 GN D
DA
(DFN 6L-2x2)
6
5
4
DFN 6L-2x2
1
2
3
EN 2
VIN
EN1
OUTPUT1 VOLTAGE:
A
:
:
Z
3
4
5
6
7
8
VOUT1
0.8V
:
:
3.3V
2.85V
3.4V
3.5V
3.6V
3.7V
3.8V
(Internally set VOUT1 、 VOUT2 and
PACKAGE
TYPE,
refer
to
the
“designator xxxxxx” table below. For
other combinations, a unit of 0.1V within
0.8~3.8V, additional voltage versions and
package type are available on demand.)
Example: AIC1952-KEGG6TTR
 Vout1 = 1.8V, Vout2 = 1.2V, with
G6T type pin configuration
in SOT-23-6 Green package and
TAPE & REEL packing.
AIC1952-ZKGG6ATR
 Vout1 = 3.3V, Vout2 = 1.8V, with
G6A type pin configuration
in SOT-23-6 Green package and
TAPE & REEL packing.
2
AIC1952
Designator xxxxxx
Designator
xxxxxx
WWGG6T
WWGG6A
EZGG6T
EZGG6A
W3GG6T
W3GG6A
ZKGG6T
ZKGG6A
UHGG6T
UHGG6A
33GG6T
33GG6A
KUGG6T
KUGG6A
HUGG6T
HUGG6A
WRGG6T
WRGG6A
UZGG6T
Output Voltage
VOUT1
VOUT2
3.0
3.0
1.2
3.3
3.0
2.85
3.3
1.8
2.8
1.5
2.85
2.85
1.8
2.8
1.5
2.8
3.0
2.5
2.8
3.3
Designator
xxxxxx
DEGG6T
DEGG6A
KHGG6T
KHGG6A
KEGG6T
KEGG6A
ZWGG6T
ZWGG6A
ZZGG6T
ZZGG6A
KZGG6T
KZGG6A
UKGG6T
UKGG6A
ZUGG6T
ZUGG6A
ERGG6T
ERGG6A
Output Voltage
VOUT1
VOUT2
1.1
1.2
1.8
1.5
1.8
1.2
3.3
3.0
3.3
3.3
1.8
3.3
2.8
1.8
3.3
2.8
1.2
2.5
SOT-23-6 Marking
Part No.
Marking
Output Voltage
1st X -> Vout1, 2nd X -> Vout2
AIC1952-xxGG6T GQxxG
X=A,B,C…Y, Z, 3~8
(A=0.8V, B=0.9V,…Y=3.2V, Z=3.3V, 3=2.85V, 4=3.4V, 5=3.5V,...8=3.8V), 0.1V a step
1st X -> Vout1, 2nd X -> Vout2
AIC1952-xxGG6A GPxxG
X=A,B,C…Y, Z, 3~8
(A=0.8V, B=0.9V,…Y=3.2V, Z=3.3V, 3=2.85V, 4=3.4V, 5=3.5V,...8=3.8V), 0.1V a step
DFN 6L-2X2 Marking
Part No.
Marking
AIC1952-xxGDA
GTxxG
Output Voltage
1st X -> Vout1, 2nd X -> Vout2
X=A,B,C…Y, Z, 3~8
(A=0.8V, B=0.9V,…Y=3.2V, Z=3.3V, 3=2.85V, 4=3.4V, 5=3.5V,...8=3.8V), 0.1V a step
3
AIC1952
 ABSOLUTE MAXIMUM RATINGS
Input Voltage ....................................................................................................................................... 7V
EN Pin Voltage.................................................................................................................................... 7V
Operating Ambient Temperature Range TA ......................................................................... -40ºC~85ºC
Operating Maximum Junction Temperature TJ ............................................................................. 150ºC
Storage Temperature Range TSTG ..................................................................................... -65ºC~150ºC
Lead Temperature (Soldering 10 Sec.)......................................................................................... 260ºC
Thermal Resistance Junction to Case
SOT-23-6 .............................................................115C/W
DFN 6L-2X2*..........................................................30C/W
Thermal Resistance Junction to Ambient
SOT-23-6 .............................................................250C/W
DFN 6L-2X2*........................................................165C/W
(Assume no ambient airflow)
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
*The package is place on a two layers PCB with 2 ounces copper and 2 square inch, connected by 8 vias.
4
AIC1952
 ELECTRICAL CHARACTERISTICS
(VIN = VOUT + 1V, VEN1=VEN2= VIN, TJ=25C, unless otherwise specified) (Note 1)
PARAMETER
TEST CONDITIONS
Input Voltage (Note 2)
Output Voltage Tolerance
VIN= 6V, IOUT = 1mA
Continuous Output Current
SYMBOL
MIN.
VIN
TYP.
MAX.
UNIT
1.6
6.0
V
VOUT
-2
2
%
IOUT
300
mA
Quiescent Current
VEN2 = VEN1 = VIN
IQ
50
80
A
GND Pin Current
IOUT1 = 300mA & IOUT2 =
300mA, VEN2 = VEN1 = VIN
IGND
55
80
A
Standby Current
VEN1=VEN2= 0
ISTBY
0.1
A
Output Current Limit
VIN= 5V, VOUT = GND
IIL
500
720
mA
640
700
380
440
270
330
200
250
340
VOUT=1.2V
Dropout Voltage
IOUT = 300mA
VOUT=1.8V
VOUT=2.5V
VDROP
VOUT=3.3V
mV
Line Regulation
VIN = VOUT + 1V to 6V
VLIR
3
16
mV
Load Regulation
IOUT = 1mA to 300mA
VLOR
2
10
mV
Ripple Rejection
f=1kHz, Ripple=0.5Vp-p,
PSRR
70
dB
Output Noise Voltage
f= 10~100KHz
24
Vrms
50
ppm/℃
150
℃
35
℃
Temperature Coefficient
Thermal Shutdown
Temperature
TC
VIN = VOUT + 1V
Thermal Shutdown
Hysteresis
EN Pin SPECIFICATIONS
EN Pin Current
VEN1 = VEN2 = VIN
0.1
IEN
A
Shutdown Exit Delay Time
t
100
S
Max Output Discharge
Resistance to GND during
shutdown
RDSON_
CLMP
20
Ω
EN Input Threshold
Output ON
VENH
Output OFF
VENL
1.6
0.25
V
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: VIN(min) is the higher value of Vout + Dropout Voltage or 1.6V.
5
AIC1952
 TYPICAL PERFORMANCE CHARACTERISTICS
1.00
1100
0.75
1050
0.50
Dropout Voltage (mV)
Output Voltage Variation (%)
VOUT =0.8V
VIN =1.8V
VOUT =0.8V
0.25
0.00
-0.25
-0.50
TA=85℃
1000
950
900
TA=-40℃
850
TA=25℃
800
-0.75
-1.00
-40 -30 -20 -10
0
10
20
30
40
50
60
70
750
150
80
180
Temperature (℃)
Fig.1 Output Voltage Variation vs. Temperature
270
300
450
VIN =3.5V
VOUT =2.5V
0.75
400
VOUT =2.5V
350
0.50
Dropout Voltage (mV)
Output Voltage Variation (%)
240
Fig.2 Dropout Voltage vs. Output Current
1.00
0.25
0.00
-0.25
-0.50
-0.75
TA=85℃
300
250
200
TA=-40℃
150
100
50
-1.00
-40 -30 -20 -10
0
10
20
30
40
50
60
70
TA=25℃
0
80
50
100
Temperature (℃)
150
200
250
300
Output Current (mA)
Fig.3 Output Voltage Variation vs. Temperature
Fig.4 Dropout Voltage vs. Output Current
1.00
240
VIN =4.3V
VOUT =3.3V
0.75
VOUT =3.3V
TA=85℃
200
0.50
Dropout Voltage (mV)
Output Voltage Variation (%)
210
Output Current (mA)
0.25
0.00
-0.25
-0.50
-0.75
TA=25℃
160
TA=-40℃
120
80
40
-1.00
-40 -30 -20 -10
0
10
20
30
40
50
60
Temperature (℃)
Fig.5 Output Voltage Variation vs. Temperature
70
80
50
100
150
200
250
300
Output Current (mA)
Fig.6 Dropout Voltage vs. Output Current
6
AIC1952
56
48
54
Ground Current (uA)
Quiescent Current (uA)
52
44
40
36
-40 -30 -20 -10
0
10
20
30
40
50
60
70
IOUT =300mA
48
46
IOUT =0mA
44
42
40
VIN =1.8V
VOUT1 =VOUT2 =0.8V
32
50
VOUT1=3.3V, VOUT2=0.8V, TA=25℃
38
36
80
4.0
4.5
Temperature (℃)
Fig.7 Dual LDO Quiescent Current vs. Temperature
5.5
6.0
Fig.8 Dual LDO Quiescent Current and Ground Current vs. Input Voltage
30
30
Single LDO Quiescent Current (uA)
Single LDO Quiescent Current (uA)
5.0
Input Voltage (V)
28
26
24
TA=25℃
VOUT1=1.8V
VOUT2=Shutdown Mode
22
20
28
26
24
TA=25℃
VOUT1=2.5V
VOUT2=Shutdown Mode
22
20
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
2.5
3.0
3.5
Input Voltage (V)
Fig.9 Single LDO Quiescent Current vs. Input Voltage
4.5
5.0
5.5
6.0
Fig.10 Single LDO Quiescent Current vs. Input Voltage
CIN=COUT1=COUT2=1F
IOUT2=0mA and VOUT1 is disable
CIN=COUT1=COUT2=1F
IOUT1=0mA and VOUT2 is disable
EN1 Signal
EN2 Signal
Output1 Voltage
Output1 Voltage
Output2 Voltage
Output2 Voltage
Fig.11 Start Up Waveform at VIN=3.8V, VOUT1=2.8V and VOUT2=1.8V
4.0
Input Voltage (V)
Fig.12 Start Up Waveform at VIN=3.8V, VOUT1=2.8V and VOUT2=1.8 V
7
AIC1952
CIN=COUT1=COUT2=1F
IOUT1& IOUT2=0mA
EN1 and EN2 Signal
EN1 and EN2 Signal
CIN=COUT1=COUT2=1F
IOUT1& IOUT2=0mA
Output1 Voltage
Output1 Voltage
Output2 Voltage
Output2 Voltage
Fig.13 Start Up Waveform at VIN=3.8V, VOUT1=2.8V and VOUT2=1.8V
CIN=COUT1=COUT2=1F
IOUT= 50mA to 300mA
Output Voltage Ripple
Fig.14 Shutdown Waveform at VIN=3.8V, VOUT1=2.8V and VOUT2=1.8V
CIN=COUT1=COUT2=1F
IOUT= 50mA to 300mA
Output Voltage Ripple
Output Current
Output Current
Fig.15 Load Transient Response at VIN=2.8V, VOUT=1.8V
Fig.16 Load Transient Response at VIN=3.5V, VOUT=2.5V
CIN=COUT1=COUT2=1F
IOUT= 50mA to 300mA
Output Voltage Ripple
CIN=COUT1=COUT2=1F
IOUT= 50mA to 300mA
Output Voltage Ripple
Output Current
Output Current
Fig.17 Load Transient Response at VIN=2.5V, VOUT=1.5V
Fig.18 Load Transient Response at VIN=4.3V, VOUT=3.3V
8
AIC1952
CIN=COUT1=COUT2=1F
IOUT2= 50mA to 300mA & IOUT1=0mA
CIN=COUT1=COUT2=1F
IOUT1= 50mA to 300mA & IOUT2=0mA
Output2 Voltage Ripple
Output1 Voltage Ripple
Output1 Voltage Ripple
Output2 Voltage Ripple
Output2 Current
Output1 Current
Fig.19 Cross Talk at VIN=3.8V, VOUT1=1.8V and VOUT2=2.8V
Fig.20 Cross Talk at VIN=3.8V, VOUT1=1.8V and VOUT2=2.8V
-0.5
Output Voltage Variation (%)
Output Voltage Variation (%)
0
0.0
0.5
1.0
VOUT =0.8V, IOUT =120mA
VIN =1.6V
VIN =1.7V
1.5
2.0
-40
-20
0
20
40
60
80
Temperature (℃)
1
2
VOUT=0.8V, T=27℃
IOUT=100mA
IOUT=200mA
IOUT=300mA
3
4
1.6
1.7
1.8
1.9
2.0
Input Voltage (V)
Fig.21 Output Voltage Variation vs. Temperature.
Fig.22 Output Voltage vs. Input Voltage.
-40
Simulation Verified
CIN=COUT1=COUT2=1F
-45
PSRR (dB)
-50
-55
-60
-65
-70
-75
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
Fig.23 PSRR at VIN=2.5V, VOUT=1.0V and IOUT=10mA.
9
AIC1952
 BLOCK DIAGRAM
 PIN DESCRIPTION
VIN PIN
GND PIN
EN1 PIN
EN2 PIN
VOUT1 PIN
VOUT2 PIN
-
Power input.
Ground.
Output 1 ON/OFF controller. This pin isn’t allowed to float.
Output 2 ON/OFF controller. This pin isn’t allowed to float.
Output 1.
Output 2.
10
AIC1952
 APPLICATION INFORMATION
The AIC1952 is a low-dropout, low quiescent-current,
dual-output linear regulator for battery power
applications. These parts are available with preset
output voltages ranging from 0.8V to 3.8V, and the
parts can supply loads up to 300mA.
SHUTDOWN
The AIC1952 has two independent shutdown control
inputs (EN1 and EN2). By connecting EN1 pin to
ground, output1 can be shut down. By connecting
EN2 pin to ground, output2 can be shut down. By
connecting both of EN1 pin and EN2 pin to ground,
the AIC1952 can be shut down to reduce the supply
current to 0.1A.
CURRENT LIMIT
The AIC1952 includes two independent current
limiters, which monitor and control the maximum
output current. If the output is overloaded or shorted
to ground, this can protect the device from being
damaged.
THERMAL PROTECTION
The AIC1952 includes a thermal-limiting circuit, which
is designed to protect the device against overload
condition. When the junction temperature exceeds
TJ=150ºC, the thermal-limiting circuit turns off the
pass transistors and allows the IC to cool. For
continuous load condition, maximum rating of junction
temperature must not be exceeded.
INPUT-OUTPUT CAPACITORS
to maintain stability. Input capacitor at 1F with a 1F
ceramic output capacitor for each regulator is
recommended. When choosing the input and output
ceramic capacitors, X5R and X7R types are
recommended because they retain their capacitance
over wider ranges of voltage and temperature than
other types.
POWER DISSIPATION
The maximum power dissipation of AIC1952
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 = IOUT1 (VIN-VOUT1)+ IOUT2 (VIN-VOUT2)
The maximum power dissipation is:
PMAX 
(TJ-max - TA )
Rθ JA
Where TJ-max is the maximum allowable junction
temperature (150C), and TA is the ambient
temperature suitable in application.
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.
Linear regulators require input and output capacitors
11
AIC1952
 PHYSICAL DIMENSIONS
 SOT-23-6 PACKAGE OUTLINE DRAWING
A
A
E
E1
D
e
e1
SEE VIEW B
WITH PLATING
c
A
A2
b
SECTION A-A
0.25
A1
BASE METAL
θ
L
L1
S
Y
M
B
O
L
GAUGE PLANE
SEATING PLANE
VIEW B
Note : 1. Refer to JEDEC MO-178AB.
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.
A
SOT-23-6
MILLIMETERS
MIN.
MAX.
0.95
1.45
A1
0.00
0.15
A2
0.90
1.30
b
0.30
0.50
c
0.08
0.22
D
2.80
3.00
E
2.60
3.00
E1
1.50
e
e1
L
1.90 BSC
0.60
0.30
L1
θ
1.70
0.95 BSC
0.60 REF
0°
8°
12
AIC1952
 DFN 6L-2X2 PACKAGE OUTLINE DRAWING
D2
D
6
E
E2
L
4
3
1
e
PIN#1
BOTTOM VIEW
TOP VIEW
S
Y
M
B
O
L
A
DFN 6L-2x2x0.75-0.65mm
MILLIMETERS
A
A3
0.20 BSC
D2
SEATING PLANE
SIDE VIEW
2.00 BSC
2.00 BSC
0.85
0.55
0.65 BSC
e
L
1.60
1.10
E
E2
0.35
0.20
D
b
0.80
0.70
A3
b
MAX.
MIN.
0.25
0.45
Note : 1. DIMENSION AND TOLERANCING CONFORM TO ASME Y14.5M-1994.
2.CONTROLLING DIMENSIONS:MILLIMETER,CONVERTED INCH
DIMENSION ARE NOT NECESSARILY EXACT.
3.DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS
MEASURED BETWEEN 0.10 AND 0.25 mm FROM TERMINAL TIP.
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.
13
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