AME, Inc.
Rev.S.02 1
AME1117
1A Low Dropout
Positive Voltage Regulator
n Typical Application
n Functional Block Diagram
l Low Dropout Voltage ----- 1.4V at 1A
l Adjustable or Fixed Voltages:
1.8V, 2.5V, 3.3V, 5.0V
l Adjust Pin Current Less than 120µA
l Overcurrent Protection
l Thermal Protection
The AME1117 is a 1A low-dropout positive voltage regu-
lator. It is available in fixed and adjustable output voltage
versions. Overcurrent and thermal protection are integrated
onto the chip. Output current will limit as while it reaches
the pre-set current or temperature limit. The dropout volt-
age is specified at 1.4V Maximum at full rated output
current. The AME1117 series provides excellent regula-
tion over line, load and temperature variations.
l High Efficiency Linear Regulators
l Post Regulators for Switching Supplies
l 5V to 3.3V Voltage Converter
l Battery Charger
n General Description
n Features
n Applications
Thermal
Protection
Bandgap
Reference
Current
Limiting
Amplifier
Input
Output
ADJ/COM
Error
Amp.
AME1117
Load
10µF Tan
GND
VOUT
VIN
10µF Tan
l All AME's Lead Free Products Meet RoHS
Standards
l Available in TO-220, TO-252, SOT-223
AME, Inc.
2
1A Low Dropout
Positive Voltage Regulator
AME1117
Rev.S.02
n Pin Configuration
AME1117
1. ADJ / GND
2. OUT (TAB)
3. IN
TO-220-3
Front View
SOT-223
Front View
TO-252-2
Front View
AME1117
1. ADJ / GND
2. OUT (TAB)
3. IN
AME1117
1. ADJ / GND
2. OUT (TAB)
3. IN
1 32
AME1117
AMExxxx
1
AME1117
2 3
132
AME1117
* Die Attach:
Conductive Epoxy
* Die Attach:
Conductive Epoxy
* Die Attach:
Conductive Epoxy
AME, Inc.
Rev.S.02 3
AME1117
1A Low Dropout
Positive Voltage Regulator
n Ordering Information
Operating Ambient Temperature Range
Number of Pins
Package Type
Product Grade or Option
Special Feature
AME1117 x x x x x
A:
ADJ
C:
0
O
C to 70
O
C
B:
TO-220
T:
3
Z:
Lead Free
B:
2.5V
C:
TO-252
C:
3.3V
G:
SOT-223
D:
5.0V
E:
1.8V
Special Feature
Product Grade
or Option Operating Ambient
Temperature Range Package Type Number of
Pins
AME, Inc.
4
1A Low Dropout
Positive Voltage Regulator
AME1117
Rev.S.02
Part Number Marking* Output Voltage Package Operating Ambient
Temperature Range
AME1117ACGT ABEyww ADJ SOT-223 0oC to 70oC
AME1117ACGTZABEyww ADJ SOT-223 0oC to 70oC
AME1117BCGT AKEyww 2.5 SOT-223 0oC to 70oC
AME1117BCGTZAKEyww 2.5 SOT-223 0oC to 70oC
AME1117CCGT ABFyww 3.3 SOT-223 0oC to 70oC
AME1117CCGTZABFyww 3.3 SOT-223 0oC to 70oC
AME1117DCGT AKFyww 5.0 SOT-223 0oC to 70oC
AME1117DCGTZAKFyww 5.0 SOT-223 0oC to 70oC
AME1117ECGT AXHyww 1.8 SOT-223 0oC to 70oC
AME1117ECGTZ AXHyww 1.8 SOT-223 0oC to 70oC
AME1117ACCTAME1117
ACCT
yyww ADJ TO-252-2 0oC to 70oC
AME1117ACCTZ AME1117
ACCT
yyww ADJ TO-252-2 0oC to 70oC
AME1117BCCTAME1117
BCCT
yyww 2.5 TO-252-2 0oC to 70oC
AME1117BCCTZ AME1117
BCCT
yyww 2.5 TO-252-2 0oC to 70oC
AME1117CCCTAME1117
CCCT
yyww 3.3 TO-252-2 0oC to 70oC
AME1117CCCTZ AME1117
CCCT
yyww 3.3 TO-252-2 0oC to 70oC
n Ordering Information (contd.)
Note: yyww & yww represent the date code
* A line on top of the first letter represents lead free plating such as AME1117.
Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type.
AME, Inc.
Rev.S.02 5
AME1117
1A Low Dropout
Positive Voltage Regulator
n Ordering Information
Part Number Marking* Output Voltage Package Operating Ambient
Temperature Range
AME1117DCCTAME1117
DCCT
yyww 5.0 TO-252-2 0oC to 70oC
AME1117DCCTZ AME1117
DCCT
yyww 5.0 TO-252-2 0oC to 70oC
AME1117ECCT AME1117
ECCT
yyww 1.8 TO-252-2 0oC to 70oC
AME1117ECCTZ AME1117
ECCT
yyww 1.8 TO-252-2 0oC to 70oC
AME1117ACBT AME1117
ACBT
yyww ADJ TO-220 0oC to 70oC
AME1117ACBTZAME1117
ACBT
yyww ADJ TO-220 0oC to 70oC
AME1117BCBT AME1117
BCBT
yyww 2.5 TO-220 0oC to 70oC
AME1117BCBTZAME1117
BCBT
yyww 2.5 TO-220 0oC to 70oC
AME1117CCBT AME1117
CCBT
yyww 3.3 TO-220 0oC to 70oC
AME1117CCBTZAME1117
CCBT
yyww 3.3 TO-220 0oC to 70oC
AME1117DCBT AME1117
DCBT
yyww 5.0 TO-220 0oC to 70oC
AME1117DCBTZAME1117
DCBT
yyww 5.0 TO-220 0oC to 70oC
AME1117ECBT AME1117
ECBT
yyww 1.8 TO-220 0oC to 70oC
AME1117ECBTZ AME1117
ECBT
yyww 1.8 TO-220 0oC to 70oC
AME, Inc.
6
1A Low Dropout
Positive Voltage Regulator
AME1117
Rev.S.02
n Absolute Maximum Ratings
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device.
* Measure θJC on backside center of tab.
** MIL-STD-202G 210F
Parameter Package Die Attach Symbol Maximum Unit
TO-220-3 6
TO-252-2 5
SOT-223 25
TO-220-3 55
TO-252-2 90
SOT-223 120
TO-220-3 2200
TO-252-2 1200 mW
SOT-223 900
VIN 12 V
TJ0 to 125 oC
TSTG -65 to 150 oC
350 oC
Solder Iron (10 Sec)**
Internal Power Dissipation Conductive
Epoxy PD
Operating Junction Temperature Range
Storage Temperature Range
Input Voltage
Thermal Resistance*
(Junction to Case) Conductive
Epoxy θJC
oC/W
Thermal Resistance
(Junction to Ambient) Conductive
Epoxy θJA
AME, Inc.
Rev.S.02 7
AME1117
1A Low Dropout
Positive Voltage Regulator
Parameter Symbol Min Typ Max Units
TJ=25oC4.950 5.000 5.050
TJ=0oC to 70oC4.900 5.000 5.100
Current Limit ISVIN = 7V to 10V TJ=0oC to 70oC1.0 1.5 -A
Quiescent Current IQVIN = 7V, IO = 0A to 1A TJ=0oC to 70oC-6.0 13 mA
Temp. Coefficient TC-0.005 -%/ºC
Temperature Stability TS VIN = 5V, IO = 100mA TJ=0oC to 70 oC-0.5 -%
RMS Output Noise VN10HZ<= f <=10KHZTJ=25oC-0.003 -%VO
Ripple Rejection Ratio RA VIN = 5V, IO = 1A TJ=0oC to 70oC60 72 -dB
VIN = 7V to 10V, IO = 0A to 1A
Dropout Voltage VDROPOUT IO = 0A to 1A,
∆Vo = ±1% V-1.2 1.4TJ=0oC to 70oC
Line Regulation REGLINE VIN =7V to 9V,
IO = 0A %
Load Regulation REGLOAD VIN = 7V
IO = 0A~1A TJ=0oC to 70oC
TJ=0oC to 70oC
-
Test Condition
Output Voltage VOUT VIN = 7V, IO = 0A V
0.1
- - 0.2
1.0
Parameter Symbol Min Typ Max Units
TJ=25oC1.782 1.800 1.818
TJ=0oC to 70oC1.764 1.800 1.836
Current Limit ISVIN = 4.75V to 7V TJ=0oC to 70oC1.0 1.5 -A
Quiescent Current IQVIN = 5V, IO = 0A to 1A TJ=0oC to 70oC-6.0 13 mA
Temp. Coefficient TC-0.005 -%/ºC
Temperature Stability TS VIN = 5V, IO = 100mA TJ=0oC to 70oC-0.5 -%
RMS Output Noise VN10HZ<= f <=10KHZTJ=25oC-0.003 -%VO
Ripple Rejection Ratio RA VIN = 5V, IO = 1A TJ=0oC to 70oC60 72 -dB
V
VIN = 4.75V to 7V, IO = 0A to 1A
REGLOAD VIN = 5V,
IO = 0A~1A
-1.2 1.4
TJ=0oC to 70oC
TJ=0oC to 70oCDropout Voltage VDROPOUT IO = 1A,
∆Vo = ±1%
V
Line Regulation REGLINE VIN = 4.75V to 7V,
IO = 0A TJ=0oC to 70oC- - 0.2 %
Load Regulation
Test Condition
Output Voltage VOUT VIN = 5V, IO = 0A
-0.1 1.0
n Electrical Specifications
AME1117Dxxx
AME1117Exxx
AME, Inc.
8
1A Low Dropout
Positive Voltage Regulator
AME1117
Rev.S.02
Parameter Symbol Min Typ Max Units
TJ=25oC2.475 2.500 2.525
TJ=0oC to 70oC2.450 2.500 2.550
Current Limit ISVIN = 4.75V to 7V TJ=0oC to 70oC1.0 1.5 -A
Quiescent Current IQVIN = 5V, IO = 0A to 1A TJ=0oC to 70oC-6.0 13 mA
Temp. Coefficient TC-0.005 -%/ºC
Temperature Stability TS VIN = 5V, IO = 100mA TJ=0oC to 70 oC-0.5 -%
RMS Output Noise VN10HZ<= f <=10KHZTJ=25oC-0.003 -%VO
Ripple Rejection Ratio RA VIN = 5V, IO = 1A TJ=0oC to 70oC60 72 -dB
V
VIN = 4.75V to 7V, IO = 0A~1A
-TJ=0oC to 70oC
Load Regulation REGLOAD VIN = 5V
IO = 0A to 1A
Dropout Voltage VDROPOUT IO = 0A to 1A,
∆Vo = ±1%
0.2 %
-0.1 1.0
Line Regulation REGLINE VIN = 4.75V to 7V,
IO = 0A TJ=0oC to 70oC
Output Voltage VOUT VIN = 5V, IO = 0A V
Test Condition
TJ=0oC to 70oC
1.2 1.4
- -
Parameter Symbol Min Typ Max Units
TJ=25oC3.270 3.300 3.330
TJ=0oC to 70oC3.234 3.300 3.366
Current Limit ISVIN = 4.75V to 7V TJ=0oC to 70oC1.0 1.5 -A
Quiescent Current IQVIN = 5V, IO = 0A to 1A TJ=0oC to 70oC-6.0 13 mA
Temp. Coefficient TC-0.005 -%/ºC
Temperature Stability TS VIN = 5V, IO = 100mA TJ=0oC to 70oC-0.5 -%
RMS Output Noise VN10HZ<= f <=10KHZTJ=25oC-0.003 -%VO
Ripple Rejection Ratio RA VIN = 5V, IO = 1A TJ=0oC to 70oC60 72 -dB
V
VIN = 4.75V to 7V, IO = 0A~1A
-TJ=0oC to 70oC
Load Regulation REGLOAD VIN = 5V
IO = 0A to 1A
Dropout Voltage VDROPOUT IO = 0A to 1A,
∆Vo = ±1%
%
-0.1 1.0
Line Regulation REGLINE VIN = 4.75V to 7V,
IO = 0A TJ=0oC to 70oC
Test Condition
Output Voltage VOUT VIN = 5V, IO = 0A V
TJ=0oC to 70oC
- - 0.2
1.2 1.4
n Electrical Specifications
AME1117Cxxx
AME1117Bxxx
AME, Inc.
Rev.S.02 9
AME1117
1A Low Dropout
Positive Voltage Regulator
Parameter Symbol Min Typ Max Units
TJ=25oC1.238 1.250 1.262
TJ=0oC to 70oC1.225 1.250 1.275
Current Limit ISVIN = 2.7V to 7V TJ=0oC to 70oC1.0 1.5 -A
Temp. Coefficient TC-0.005 -%/ºC
Temperature Stability TSVIN = 5V, IO = 100mA TJ=0oC to 70 oC-0.5 %
Minimum Load Current IO-5.0 10 mA
RMS Output Noise VN10HZ<= f <=10KHZTJ=25oC-0.003 -%VO
Ripple Rejection Ratio RAVIN = 5V, IO = 1A TJ=0oC to 70oC60 72 -dB
Adjust Pin
Current Change ∆IADJ
VIN = 5V
VIN = 2.75V to 7V,
IO = 10mA to 1A TJ=0oC to 70oCµA
VIN = 2.75V to 7V,
IO = 10mA to 1A
Load Regulation REGLOAD
VDROPOUT
5.0-0.2
VIN = 2.75V to 7V, IO = 10mA to 1A
V
Test Condition
Adjust Pin Current IADJ
TJ=0oC to 70oC
Dropout Voltage
VIN = 5V,
IO = 10mA to 1A
IO = 10mA to 1A,
∆Vo = ±1%
VREF
TJ=0oC to 70oC
V
Line Regulation * REGLINE
Reference Voltage VIN = 5V,
IO = 10mA
VIN = 4.75V to 7V,
IO = 10mA %
- - 0.2
0.1 1.0
-1.2 1.4
-
TJ=0oC to 70oC
TJ=0oC to 70oC-55 120
OUT
ADJ
IN
VIN VOUT
10µF Tan 10µF Tan164
100
*Line regulation test circuit
n Electrical Specifications
AME1117Axxx
AME, Inc.
10
1A Low Dropout
Positive Voltage Regulator
AME1117
Rev.S.02
1. Output Voltage Adjustment
Like most regulators, the AME1117 regulates the out-
put by comparing the output voltage to an internally gen-
erated reference voltage. On the adjustable version, the
VREF is available externally as 1.25V between VOUT and
ADJ. The voltage ratio formed by R1 and R2 should be
set to conduct 10mA (minimum output load). The output
voltage is given by the following equation:
VOUT = VREF ( 1 +
) + IADJ x R2
On fixed versions of AME1117, the voltage divider is
provided internally.
n Application Description
R2
R1
2. Thermal Protection
AME1117 has thermal protection which limits junction
temperature to 150oC. However, device functionality is
only guaranteed to a maximum junction temperature of
+125oC.
The power dissipation and junction temperature for
AME1117 is given by
PD = (VIN - VOUT) x IOUT
TJUNCTION = TAMBIENT + ( PD x θJA)
Note: TJUNCTION must not exceed 125oC
3. Current Limit Protection
AME1117 is protected against overload conditions. Cur-
rent protection is triggered at typically 1.5A.
4. Stability and Load Regulation
AME1117 requires a capacitor from VOUT to GND to pro-
vide compensation feedback to the internal gain stage.
This is to ensure stability at the output terminal. Typi-
cally, a 10µF tantalum or 50µF aluminum electrolytic is
sufficient.
(Note: It is important that the ESR for this capacitor does not ex-
ceed 0.5Ω.)
The output capacitor does not have a theoretical upper
limit and increasing its value will increase stability. COUT
= 100µF or more is typical for high current regulator de-
sign.
For the adjustable version, the best load regulation is
accomplished when the top of the resistor divider (R1) is
connected directly to the output pin of the AME1117.
When so connected, RP is not multiplied by the divider
ratio.
For fixed output versions, the top of R1 is internally
connected to the output. The ground pin can be connected
to the low side of the load in order to eliminate ground
loop errors.
OUT
ADJ
IN
VIN
R1
R2
RL
RP
Parasitic
Line Resistance
Connect
R2 to load
(Connect R1 to case)
VOUT = VREF (1+R2
R1) + IADJ x R2
OUT
ADJ
IN
VREF
IADJ
55µA
VIN VOUT
R1
R2
C1
AME, Inc.
Rev.S.02 11
AME1117
1A Low Dropout
Positive Voltage Regulator
5. Thermal Consideration
The AME1117 series contain thermal limiting circuitry
designed to protect itself from over-temperature condi-
tions. Even for normal load conditions, maximum junc-
tion temperature ratings must not be exceeded. As men-
tioned in thermal protection section, we need to consider
all sources of thermal resistance between junction and
ambient. It includes junction-to-case, case-to-heat-sink
interface and heat sink thermal resistance itself.
Junction-to-case thermal resistance is specified from
the IC junction to the bottom of the case directly below
the die. Proper mounting is required to ensure the best
possible thermal flow from this area of the package to the
heat sink. The case of all devices in this product series is
electrically connected to the output. Therefore, if the case
of the device must be electrically isolated, a thermally
conductive spacer is recommended.
AME, Inc.
12
1A Low Dropout
Positive Voltage Regulator
AME1117
Rev.S.02
n Advanced Applications (contd.)
Adjustable Output Voltage
Paralleling Regulators
Note: * VOUT = VREF ( 1 + ) + IADJ x R2
** Optional for improved ripple rejection
R2
R1
Note: * 20mΩ is ballast resistance
The inter - connection of #18 wire could act as ballast resistance
VIN = 5V * VO = 1.5 - 3.45V
R1
R2
10µF
10µF2K
1K
10µF
**
AME1117
VIN VOUT
ADJ
AME1117
VIN
10µF
VOUT
10µF
IO = 0 to 2A
* 20mΩ
* 20mΩ
VOUT
VIN
GND
AME1117 VOUT
VIN
GND
AME, Inc.
Rev.S.02 13
AME1117
1A Low Dropout
Positive Voltage Regulator
n Advanced Applications
Regulator with Reference
Regulator with Reverse Diode Protection
Note: * VO = VREF + VZ (VZ: breakdown voltage of Zener diode)
** Optional for improved ripple rejection
* VO
AME1117
VIN
10µF
10µF
1K
10µF
**
VIN VOUT
GND
Zener diode or
voltage reference
AME1117
10µF10µF
*VO
VIN VOUT
GND
VIN
AME, Inc.
14
1A Low Dropout
Positive Voltage Regulator
AME1117
Rev.S.02
Temperature Stability
(For Fixed Voltage) Temperature Stability
(For Adjustable Voltage)
Short Circuit Current Dropout Voltage
Adjust Pin Current Minimum Operating Current
Adjust Pin Current (µA)
Temperature (oC)
0
5
10
15
20
25
30
35
40
45
-50 -25 0 25 50 75 100 125 Input/Output Differential Voltage(V)
Minimum Operation Current (mA)
0
1
2
3
4
5
6
7
0 1 2 3 4 5 6 7 8 9
TJ=25OC
1.238
1.240
1.242
1.244
1.246
1.248
1.250
1.252
-50 -25 0 25 50 75 100 125
Reference Voltage (V)
Temperature (oC)
IO=10mA
-0.25
-0.20
-0.15
-0.10
-0.05
0.00
-50 -30 -10 10 30 50 70 90
Output Voltage deviation (%)
Temperature (oC)
IO=0mA
Input/Output Differential Voltage(V)
Output Short Circuit Current (A)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
1 2 3 4 5 6 7 8 9 10
TJ=25OC
Load Current (A)
Drop-out Voltage (V)
0.90
0.95
1.00
1.05
1.10
1.15
1.20
1.25
00.2 0.4 0.6 0.8 1
TJ=25OC
AME, Inc.
Rev.S.02 15
AME1117
1A Low Dropout
Positive Voltage Regulator
Load Transient Response Line Transient Response
Time (µS)
0
1
-0.1
0
0.1
VIN=5V
VO=3.3V
Preload=100mA
COUT=10µF
COUT=1µF
COUT=0µF
∆VO
CIN=10µF
2
Load Current(A)Output Voltage
Deviation (V)
0.0 25 50
IO
TJ=25OC
Time (µS)
5V
6V
-30mV
0
30mV VO Deviation
VIN
CIN=CO=1mF, IO=0.1A, VO=3.3V
TJ=25OC
AME, Inc.
16
1A Low Dropout
Positive Voltage Regulator
AME1117
Rev.S.02
n Tape and Reel Dimension
TO-252-2
Carrier Tape, Number of Components Per Reel and Reel Size
SOT-223
Carrier Tape, Number of Components Per Reel and Reel Size
Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size
SOT-223 12.0±0.1 mm 4.0±0.1 mm 2500pcs 330±1 mm
W
P
PIN 1
AME AME
W
P
PIN 1
AME AME
Package Carrier Width (W) Pitch (P) Part Per Full Reel Reel Size
TO-252-2 16.0±0.1 mm 4.0±0.1 mm 2500pcs 330±1 mm
AME, Inc.
Rev.S.02 17
AME1117
1A Low Dropout
Positive Voltage Regulator
TO-220-3
Top View
Side View
G
I
P
O
M
N
K
D
E
C
A
MIN MAX MIN MAX
A5.58 7.49 0.2197 0.2949
C 2.03 4.83 0.0800 0.1902
D0.50 1.40 0.0197 0.0550
E0.30 1.15 0.0118 0.0453
G9.65 10.67 0.3799 0.4200
I3.53 4.09 0.1390 0.1610
K0.50 1.15 0.0197 0.0453
M1.14 1.78 0.0449 0.0700
N2.28 2.80 0.0898 0.1102
O12.70 14.74 0.5000 0.5803
P14.22 16.51 0.5600 0.6500
SYMBOLS MILLIMETERS INCHES
n Package Dimension
SOT-223
C
13o(4X)
Top View Side View
θ
D
B1
HE
e
A1 B
13o(4X)
Front View
F
MIN MAX MIN MAX
A10.01 0.10 0.0004 0.0039
B0.60 0.84 0.0236 0.0330
B12.90 3.15 0.1140 0.1240
C0.24 0.38 0.0094 0.0150
D6.30 6.71 0.2480 0.2640
E3.30 3.71 0.1299 0.1460
F1.40 1.80 0.0551 0.0709
e
H6.70 7.30 0.2638 0.2874
θ0o10o0o10o
2.30 BSC 0.0906 BSC
MILLIMETERS INCHES
SYMBOLS
AME, Inc.
18
1A Low Dropout
Positive Voltage Regulator
AME1117
Rev.S.02
MIN MAX MIN MAX
A0.43 0.58 0.0169 0.0230
B1.60 1.95 0.0630 0.0768
C0.51 1.78 0.0200 0.0701
D0.43 0.60 0.0169 0.0236
E6.35 6.80 0.2500 0.2677
F5.36 7.20 0.2110 0.2835
G2.20 3.00 0.0866 0.1181
H-* 2.30 -*0.0906
J-0.97 -0.0380
K5.20 5.50 0.2047 0.2165
L1.40REF 0.055REF
SYMBOLS MILLIMETERS INCHES
n Package Dimension
TO-252-2
*: Typical Value
Notes:
1. Controlling dimension: Millimeters.
2. Maximum lead thickness includes lead finish thickness Mini-
mum lead thickness is the minimum thickness of base material.
CG
F
L
Top View Side View
E
KBA
D
H
J
Life Support Policy:
These products of AME, Inc. are not authorized for use as critical components in life-support
devices or systems, without the express written approval of the president
of AME, Inc.
AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and
advises its customers to obtain the latest version of relevant information.
AME, Inc. , July 2007
Document: 1014-DS1117-S.02
Corporate Headquarter U.S.A.(Subsidiary)
AME, Inc. Analog Microelectronics, Inc.
2F, 302 Rui-Guang Road, Nei-Hu District 3100 De La Cruz Blvd., Suite 201
Taipei 114, Taiwan. Santa Clara, CA. 95054-2438
Tel: 886 2 2627-8687 Tel : (408) 988-2388
Fax: 886 2 2659-2989 Fax: (408) 988-2489
www.ame.com.tw
E-Mail: sales@ame.com.tw
