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General Description
TM
AAT1117
1 Amp Linear Regulator
Features
•
•
•
•
•
•
Guaranteed 1.2V max Dropout at max current
Adjustable or Factory programmed output
voltages
Excellent performance over line, load
Current limit protection
Over-Temperature protection
SOT-223, TO-252 (DPAK) and TO-220
packages
The AAT1117 is a Positive Linear Regulator
designed to deliver 1 amp. It features adjustable
or fixed output voltages and excellent
performance over line and load variations. The
device is able to protect itself and the load from
short circuit conditions with integrated current
limiting circuitry. Thermal shutdown is activated
to prevent damage under extreme conditions.
The AAT1117 is available in surface mount SOT-
223 or TO-252 (DPAK), and through-hole TO-220
packages.
Applications
•
•
•
•
•
Active SCSI Terminators
High Efficiency Linear Regulators
Post Regulators for Switching Supplies
Battery Chargers
5V to 3.3V Linear Regulators
Preliminary Information
Typical Application
INPUT
IN
OUTPUT
AAT1117
GND/ADJ
OUT
10uF
10uF
Advanced Analogic Technologies, Inc.
1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086
(408)524-9684 Fax (408)524-9689
2-1
1117.2000.05.0.92
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Symbol
V
IN
I
OUT
T
J
Θ
JA
Θ
JA
Θ
JA
P
D
P
D
P
D
T
LEAD
TM
AAT1117
1 Amp Linear Regulator
Absolute Maximum Ratings
(T
A
=25°C unless otherwise noted)
Description
Input Voltage
DC Output Current
Operating Junction Temperature Range
Thermal Resistance (SOT-223)
Thermal Resistance (TO-252)
Thermal Resistance (TO-220)
Maximum Power Dissipation (SOT-223)
Maximum Power Dissipation (TO-252)
Maximum Power Dissipation (SOT-220)
Maximum Soldering Temperature (at leads, 10 sec)
Max
15
P
D
/(V
IN
-V
O
)
0 to 125
150
80
60
Internally
Limited
300
Units
V
mA
°C
°C/W
°C/W
°C/W
mW
mW
mW
°C
Note: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at
conditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one
time.
Recommended Operating Conditions
Symbol
V
IN
T
Description
Input Voltage
Ambient Temperature Range
Rating
V
OUT
+1.2 to 13.2
Units
V
°C
-40 to +85
Electrical Characteristics AAT1117-ADJ
(T
J
=25°C unless otherwise noted)
Symbol
V
REF
∆V
OUT
/
V
OUT
∆V
OUT
/
V
OUT
V
DO
I
LIM
TC
∆V/∆T
I
ADJ
∆I
ADJ
I
OUTMIN
V
N
PSRR
Description
Reference Voltage
Conditions
V
IN
= 5V, I
OUT
= 10mA
T
J
=25°C
Full temp
Min
1.238
1.225
Typ
1.250
1.250
Max
1.262
1.275
0.2
0.3
0.4
0.3
0.4
1.2
%
Units
V
Line Regulation
Load Regulation
Dropout Voltage
1
Current Limit
Ouput Voltage Temp. Coeff.
Temperature Stability
Adjust Pin Current
Adjust Pin Current Change
Minimum Load Current
RMS Output Noise
Ripple Rejection Ratio
V
IN
= 4.75 - 7V,
T
J
=25°C
I
OUT
= 10mA
T
J
=25°C
V
IN
= 4.75 - 15V,
I
OUT
= 10mA
Full temp
T
J
=25°C
V
IN
= 5V,
I
OUT
= 10mA -1A
Full temp
I
OUT
= 10mA -1A,
Full temp
∆V
OUT
=
±1%
V
IN
= 2.75 - 7V
Full temp
V
IN
= 2.75 - 7V, I
OUT
= 10mA - 1A
V
IN
= 5V, I
OUT
= 100mA, Full temp
T
J
=25°C
V
IN
= 2.75 - 7V,
I
OUT
= 10mA - 1A
Full temp
V
IN
= 2.75 - 7V, I
OUT
= 10mA - 1A,
Full temp
V
IN
= 5V
T
J
= 25°C
V
IN
= 5V, I
OUT
= 1A, Full temp
0.05
0.2
1.0
1.0
0.005
0.5
55
%
V
A
%/°C
%
90
0.2
5
0.003
72
5
10
µA
µA
mA
%V
OUT
dB
60
Advanced Analogic Technologies, Inc.
1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086
(408)524-9684 Fax (408)524-9689
2-2
1117.2000.05.0.92
$1$/2*,&
7(&+
Symbol
V
OUT
∆V
OUT
/
V
OUT
∆V
OUT
/
V
OUT
V
DO
I
LIM
I
Q
TC
∆V/∆T
V
N
PSRR
Description
Output Voltage
TM
AAT1117
1 Amp Linear Regulator
Electrical Characteristics AAT1117-3.3 (fixed)
(T
J
=25°C unless otherwise noted)
Conditions
V
IN
= 5V, I
OUT
= 0A
T
J
=25°C
Full temp
Min
3.270
3.234
Typ
3.30
3.30
Max
3.330
3.336
0.2
0.3
0.4
0.3
0.4
1.2
%
Units
V
Line Regulation
Load Regulation
Dropout Voltage
1
Current Limit
Quiescent Current
Ouput Voltage Temp. Coeff.
Temperature Stability
RMS Output Noise
Ripple Rejection Ratio
V
IN
= 4.75 - 7V,
T
J
=25°C
I
OUT
= 0A
T
J
=25°C
V
IN
= 4.75 - 15V,
I
OUT
= 0A
Full temp
T
J
=25°C
V
IN
= 5V,
I
OUT
= 0A -1A
Full temp
I
OUT
= 0A -1A,
∆V
OUT
=
±1%,
Full temp
V
IN
= 4.75 - 7V, Full temp
V
IN
= 5V, I
OUT
= 0-1A, Full temp
V
IN
= 4.75 - 7V, I
OUT
= 0 - 1A
V
IN
= 5V, I
OUT
= 100mA, Full temp
T
J
= 25°C
V
IN
= 5V, I
OUT
= 1A, Full temp
0.05
0.2
1.0
1.0
6
0.005
0.5
0.003
72
%
V
A
mA
%/°C
%
%V
OUT
dB
13
60
Note 1: V
DO
is defined as V
IN
- V
OUT
when V
OUT
is 98% of nominal.
Advanced Analogic Technologies, Inc.
1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086
(408)524-9684 Fax (408)524-9689
2-3
1117.2000.05.0.92
$1$/2*,&
7(&+
Pin Descriptions
Pin #
1
TM
AAT1117
1 Amp Linear Regulator
Symbol
GND/ADJ
Function
For the fixed version of AAT1117, pin 1 is the ground connection. For the adjustable
version, this pin is the ADJ pin. See detailed description for further information
regarding configurations.
Output pin – should be decoupled with 10µF tantalum or greater output capacitor.
Input pin - should be decoupled with 10µF tantalum or greater capacitor.
2
3
OUT
IN
Functional Block Diagram
V
IN
V
OUT
Over-Current
Protection
Over-Temp
Protection
V
REF
GND/ADJ
Advanced Analogic Technologies, Inc.
1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086
(408)524-9684 Fax (408)524-9689
2-4
1117.2000.05.0.92
$1$/2*,&
7(&+
Ordering Information
Output Voltage
3.3V
3.3V
3.3V
Adjustable
Adjustable
Adjustable
TM
AAT1117
1 Amp Linear Regulator
Package
SOT-223
TO-252
(DPAK)
TO-220
SOT-223
TO-252
(DPAK)
TO-220
Marking
Part Number
Bulk
AAT1117XMY-3.3-B1
N/A
AAT1117XPY-3.3-B1
AAT1117XMY-ADJ-B1
N/A
AAT1117XPY-ADJ-B1
Tape and Reel
AAT1117XMY-3.3-T1
AAT1117XNY-3.3-T1
N/A
AAT1117XMY-ADJ-T1
AAT1117XNY-ADJ-T1
N/A
Advanced Analogic Technologies, Inc.
1250 Oakmead Pkwy, Suite 310, Sunnyvale, CA 94086
(408)524-9684 Fax (408)524-9689
2-5
1117.2000.05.0.92
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