AME, Inc.

1A Low Dropout
AME1117 Positive Voltage Regulator

n General Description n Functional Block Diagram

The AME1117 is a 1A low-dropout positive voltage regu-
lator. It is available in fixed and adjustable output voltage Input
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
current. The AME1117 series provides excellent regula- Limiting
tion over line, load and temperature variations. Amplifier

Thermal Output
Protection

n Features
Error
Amp.
l Low Dropout Voltage ----- 1.4V at 1A Bandgap ADJ/COM
l Adjustable or Fixed Voltages: Reference

1.8V, 2.5V, 3.3V, 5.0V

l Adjust Pin Current Less than 120µA
l Overcurrent Protection
l Thermal Protection
l Available in TO-220, TO-252, SOT-223 n Typical Application
l All AME's Lead Free Products Meet RoHS
Standards

VIN VOUT
AME1117
GND

n Applications 10µF Tan 10µF Tan Load

l High Efficiency Linear Regulators

l Post Regulators for Switching Supplies
l 5V to 3.3V Voltage Converter
l Battery Charger

Rev.S.02 1
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Pin Configuration
TO-220-3 SOT-223
Front View Front View
AME1117 AME1117
1. ADJ / GND 1. ADJ / GND
2. OUT (TAB) AME1117 2. OUT (TAB)
3. IN 3. IN
AMExxxx
AME1117 1 2 3
* Die Attach: * Die Attach:
Conductive Epoxy Conductive Epoxy

1 2 3

TO-252-2
Front View
AME1117
1. ADJ / GND
2. OUT (TAB)
AME1117
3. IN

* Die Attach:
Conductive Epoxy
1 2 3

2 Rev.S.02
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Ordering Information

AME1117 x x x x x

Special Feature

Number of Pins

Package Type

Operating Ambient Temperature Range

Product Grade or Option

Product Grade Operating Ambient Number of

Package Type Special Feature
or Option Temperature Range Pins

A: ADJ C: 0OC to 70OC 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

Rev.S.02 3
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Ordering Information (contd.)

Operating Ambient
Part Number Marking* Output Voltage Package
Temperature Range
AME1117ACGT ABEyww ADJ SOT-223 0oC to 70oC

AME1117ACGTZ ABEyww ADJ SOT-223 0oC to 70oC

AME1117BCGT AKEyww 2.5 SOT-223 0oC to 70oC

AME1117BCGTZ AKEyww 2.5 SOT-223 0oC to 70oC

AME1117CCGT ABFyww 3.3 SOT-223 0oC to 70oC

AME1117CCGTZ ABFyww 3.3 SOT-223 0oC to 70oC

AME1117DCGT AKFyww 5.0 SOT-223 0oC to 70oC

AME1117DCGTZ AKFyww 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

AME1117
AME1117ACCT ACCT ADJ TO-252-2 0oC to 70oC
yyww
AME1117
AME1117ACCTZ ACCT ADJ TO-252-2 0oC to 70oC
yyww
AME1117
AME1117BCCT BCCT 2.5 TO-252-2 0oC to 70oC
yyww
AME1117
AME1117BCCTZ BCCT 2.5 TO-252-2 0oC to 70oC
yyww
AME1117
AME1117CCCT CCCT 3.3 TO-252-2 0oC to 70oC
yyww
AME1117
AME1117CCCTZ CCCT 3.3 TO-252-2 0oC to 70oC
yyww
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.

4 Rev.S.02
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Ordering Information
Operating Ambient
Part Number Marking* Output Voltage Package
Temperature Range
AME1117
AME1117DCCT DCCT 5.0 TO-252-2 0oC to 70oC
yyww
AME1117
AME1117DCCTZ DCCT 5.0 TO-252-2 0oC to 70oC
yyww
AME1117
AME1117ECCT ECCT 1.8 TO-252-2 0oC to 70oC
yyww
AME1117
AME1117ECCTZ ECCT 1.8 TO-252-2 0oC to 70oC
yyww
AME1117
AME1117ACBT ACBT ADJ TO-220 0oC to 70oC
yyww
AME1117
AME1117ACBTZ ACBT ADJ TO-220 0oC to 70oC
yyww
AME1117
AME1117BCBT BCBT 2.5 TO-220 0oC to 70oC
yyww
AME1117
AME1117BCBTZ BCBT 2.5 TO-220 0oC to 70oC
yyww
AME1117
AME1117CCBT CCBT 3.3 TO-220 0oC to 70oC
yyww
AME1117
AME1117CCBTZ CCBT 3.3 TO-220 0oC to 70oC
yyww
AME1117
AME1117DCBT DCBT 5.0 TO-220 0oC to 70oC
yyww
AME1117
AME1117DCBTZ DCBT 5.0 TO-220 0oC to 70oC
yyww
AME1117
AME1117ECBT ECBT 1.8 TO-220 0oC to 70oC
yyww
AME1117
AME1117ECBTZ ECBT 1.8 TO-220 0oC to 70oC
yyww
Rev.S.02 5
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Absolute Maximum Ratings

Parameter Package Die Attach Symbol Maximum Unit
TO-220-3 6
Thermal Resistance* Conductive
(Junction to Case)
TO-252-2
Epoxy θJC 5

SOT-223 25
o
C/W
TO-220-3 55
Thermal Resistance Conductive
(Junction to Ambient)
TO-252-2
Epoxy θJA 90

SOT-223 120

TO-220-3 2200
Conductive
Internal Power Dissipation TO-252-2 PD 1200 mW
Epoxy
SOT-223 900

Input Voltage VIN 12 V

Operating Junction Temperature Range TJ 0 to 125 o

C

Storage Temperature Range TSTG -65 to 150 o

C

Solder Iron (10 Sec)** 350 o

C

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

6 Rev.S.02
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Electrical Specifications
AME1117Exxx

Parameter Symbol Test Condition Min Typ Max Units

o
TJ =25 C 1.782 1.800 1.818
Output Voltage VOUT VIN = 5V, IO = 0A o o
V
TJ =0 C to 70 C 1.764 1.800 1.836
V IN = 4.75V to 7V,
Line Regulation REGLINE TJ =0oC to 70oC - - 0.2
IO = 0A
%
VIN = 5V, o o
Load Regulation REGLOAD TJ =0 C to 70 C - 0.1 1.0
IO = 0A~1A
IO = 1A,
Dropout Voltage VDROPOUT TJ =0oC to 70oC - 1.2 1.4 V
∆Vo = ±1%
Current Limit IS VIN = 4.75V to 7V TJ =0oC to 70oC 1.0 1.5 - A
o o
Quiescent Current IQ VIN = 5V, IO = 0A to 1A TJ =0 C to 70 C - 6.0 13 mA
Temp. Coefficient TC VIN = 4.75V to 7V, IO = 0A to 1A - 0.005 - %/ºC
o o
Temperature Stability TS VIN = 5V, IO = 100mA TJ =0 C to 70 C - 0.5 - %
o
RMS Output Noise VN 10HZ <= f <=10KHZ TJ =25 C - 0.003 - %VO
o o
Ripple Rejection Ratio RA VIN = 5V, IO = 1A TJ =0 C to 70 C 60 72 - dB

AME1117Dxxx

Parameter Symbol Test Condition Min Typ Max Units

o
TJ =25 C 4.950 5.000 5.050
Output Voltage VOUT VIN = 7V, IO = 0A o o
V
TJ =0 C to 70 C 4.900 5.000 5.100
VIN =7V to 9V,
Line Regulation REGLINE TJ =0oC to 70oC - - 0.2
IO = 0A
%
VIN = 7V o o
Load Regulation REGLOAD TJ =0 C to 70 C - 0.1 1.0
IO = 0A~1A
IO = 0A to 1A,
Dropout Voltage VDROPOUT TJ =0oC to 70oC - 1.2 1.4 V
∆Vo = ±1%
Current Limit IS VIN = 7V to 10V TJ =0oC to 70oC 1.0 1.5 - A
o o
Quiescent Current IQ VIN = 7V, IO = 0A to 1A TJ =0 C to 70 C - 6.0 13 mA
Temp. Coefficient TC VIN = 7V to 10V, IO = 0A to 1A - 0.005 - %/ºC
Temperature Stability TS VIN = 5V, IO = 100mA TJ =0oC to 70oC - 0.5 - %
o
RMS Output Noise VN 10HZ <= f <=10KHZ TJ =25 C - 0.003 - %VO
o o
Ripple Rejection Ratio RA VIN = 5V, IO = 1A TJ =0 C to 70 C 60 72 - dB

Rev.S.02 7
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator
n Electrical Specifications
AME1117Cxxx

Parameter Symbol Test Condition Min Typ Max Units

o
TJ =25 C 3.270 3.300 3.330
Output Voltage VOUT VIN = 5V, IO = 0A o o
V
TJ =0 C to 70 C 3.234 3.300 3.366
V IN = 4.75V to 7V,
Line Regulation REGLINE TJ =0oC to 70oC - - 0.2
IO = 0A
%
VIN = 5V o o
Load Regulation REGLOAD TJ =0 C to 70 C - 0.1 1.0
IO = 0A to 1A
IO = 0A to 1A,
Dropout Voltage VDROPOUT TJ =0oC to 70oC - 1.2 1.4 V
∆Vo = ±1%
Current Limit IS VIN = 4.75V to 7V TJ =0oC to 70oC 1.0 1.5 - A
Quiescent Current IQ VIN = 5V, IO = 0A to 1A TJ =0oC to 70oC - 6.0 13 mA
Temp. Coefficient TC V IN = 4.75V to 7V, IO = 0A~1A - 0.005 - %/ºC
o o
Temperature Stability TS VIN = 5V, IO = 100mA TJ =0 C to 70 C - 0.5 - %
o
RMS Output Noise VN 10HZ <= f <=10KHZ TJ =25 C - 0.003 - %VO
o o
Ripple Rejection Ratio RA VIN = 5V, IO = 1A TJ =0 C to 70 C 60 72 - dB

AME1117Bxxx

Parameter Symbol Test Condition Min Typ Max Units

o
TJ =25 C 2.475 2.500 2.525
Output Voltage VOUT VIN = 5V, IO = 0A o o
V
TJ =0 C to 70 C 2.450 2.500 2.550
VIN = 4.75V to 7V,
Line Regulation REGLINE TJ =0oC to 70oC - - 0.2
IO = 0A
%
VIN = 5V o o
Load Regulation REGLOAD TJ =0 C to 70 C - 0.1 1.0
IO = 0A to 1A
IO = 0A to 1A,
Dropout Voltage VDROPOUT TJ =0oC to 70oC - 1.2 1.4 V
∆Vo = ±1%
Current Limit IS VIN = 4.75V to 7V TJ =0oC to 70oC 1.0 1.5 - A
o o
Quiescent Current IQ VIN = 5V, IO = 0A to 1A TJ =0 C to 70 C - 6.0 13 mA
Temp. Coefficient TC VIN = 4.75V to 7V, IO = 0A~1A - 0.005 - %/ºC
o o
Temperature Stability TS VIN = 5V, IO = 100mA TJ =0 C to 70 C - 0.5 - %
RMS Output Noise VN 10HZ <= f <=10KHZ TJ =25oC - 0.003 - %VO
Ripple Rejection Ratio RA VIN = 5V, IO = 1A TJ =0oC to 70oC 60 72 - dB

8 Rev.S.02
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Electrical Specifications
AME1117Axxx
Parameter Symbol Test Condition Min Typ Max Units
o
VIN = 5V, TJ =25 C 1.238 1.250 1.262
Reference Voltage VREF o o
V
IO = 10mA TJ =0 C to 70 C 1.225 1.250 1.275
VIN = 4.75V to 7V,
Line Regulation * REGLINE TJ =0oC to 70oC - - 0.2
IO = 10mA
%
VIN = 5V, o o
Load Regulation REGLOAD TJ =0 C to 70 C - 0.1 1.0
IO = 10mA to 1A
IO = 10mA to 1A,
Dropout Voltage VDROPOUT TJ =0oC to 70oC - 1.2 1.4 V
∆Vo = ±1%
Current Limit IS VIN = 2.7V to 7V TJ =0oC to 70oC 1.0 1.5 - A
Temp. Coefficient TC VIN = 2.75V to 7V, IO = 10mA to 1A - 0.005 - %/ºC
VIN = 2.75V to 7V,
Adjust Pin Current IADJ TJ =0oC to 70oC - 55 120
IO = 10mA to 1A
µA
Adjust Pin VIN = 2.75V to 7V,
∆IADJ TJ =0oC to 70oC - 0.2 5.0
Current Change IO = 10mA to 1A
Temperature Stability TS VIN = 5V, IO = 100mA TJ =0oC to 70oC - 0.5 %
Minimum Load Current IO V IN = 5V - 5.0 10 mA
o
RMS Output Noise VN 10HZ <= f <=10KHZ TJ =25 C - 0.003 - %VO
o o
Ripple Rejection Ratio RA VIN = 5V, IO = 1A TJ =0 C to 70 C 60 72 - dB

*Line regulation test circuit

VIN VOUT
IN OUT

ADJ
100

10µF Tan 164 10µF Tan

Rev.S.02 9
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Application Description
1. Output Voltage Adjustment 3. Current Limit Protection

Like most regulators, the AME1117 regulates the out- AME1117 is protected against overload conditions. Cur-
put by comparing the output voltage to an internally gen- rent protection is triggered at typically 1.5A.
erated reference voltage. On the adjustable version, the
VREF is available externally as 1.25V between VOUT and 4. Stability and Load Regulation
ADJ. The voltage ratio formed by R1 and R2 should be
set to conduct 10mA (minimum output load). The output AME1117 requires a capacitor from VOUT to GND to pro-
voltage is given by the following equation: vide compensation feedback to the internal gain stage.
R2 This is to ensure stability at the output terminal. Typi-
VOUT = VREF ( 1 + ) + IADJ x R2 cally, a 10µF tantalum or 50µF aluminum electrolytic is
R1
sufficient.
On fixed versions of AME1117, the voltage divider is
(Note: It is important that the ESR for this capacitor does not ex-
provided internally.
ceed 0.5Ω.)

The output capacitor does not have a theoretical upper

VIN VOUT
limit and increasing its value will increase stability. COUT
IN OUT = 100µF or more is typical for high current regulator de-
ADJ
sign.
VREF R1
C1
For the adjustable version, the best load regulation is
IADJ accomplished when the top of the resistor divider (R1) is
55µA connected directly to the output pin of the AME1117.
When so connected, RP is not multiplied by the divider
R2
ratio.

For fixed output versions, the top of R1 is internally

connected to the output. The ground pin can be connected
VOUT = VREF (1+R2 ) + IADJ x R2
R1 to the low side of the load in order to eliminate ground
loop errors.
2. Thermal Protection
RP
Parasitic
AME1117 has thermal protection which limits junction VIN Line Resistance
temperature to 150oC. However, device functionality is IN OUT
only guaranteed to a maximum junction temperature of
+125oC. ADJ
R1
(Connect R1 to case)
The power dissipation and junction temperature for RL
AME1117 is given by
R2
PD = (VIN - VOUT) x IOUT

TJUNCTION = TAMBIENT + ( PD x θJA)

Note: T JUNCTION must not exceed 125oC

Connect
R2 to load

10 Rev.S.02
 AME, Inc.
1A Low Dropout
AME1117 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.

Rev.S.02 11
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Advanced Applications (contd.)

Adjustable Output Voltage

VIN = 5V * VO = 1.5 - 3.45V

VIN VOUT
AME1117
ADJ

10µF R1 10µF

1K
**
10µF R2
2K

R2
Note: * VOUT = VREF ( 1 + ) + IADJ x R2
R1
** Optional for improved ripple rejection

Paralleling Regulators

VIN VOUT
VIN VOUT
AME1117
* 20mΩ IO = 0 to 2A
GND

10µF 10µF

VIN VOUT
AME1117
* 20mΩ
GND

Note: * 20mΩ is ballast resistance

The inter - connection of #18 wire could act as ballast resistance

12 Rev.S.02
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Advanced Applications
Regulator with Reference

VIN * VO

VIN VOUT
AME1117
GND

10µF 10µF

1K
**
10µF Zener diode or
voltage reference

Note: * VO = VREF + VZ (VZ: breakdown voltage of Zener diode)

** Optional for improved ripple rejection

Regulator with Reverse Diode Protection

VIN *VO
VIN VOUT
AME1117
GND

10µF 10µF

Rev.S.02 13
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

Temperature Stability Temperature Stability

(For Fixed Voltage) (For Adjustable Voltage)
0.00 1.252

IO=0mA IO=10mA
Output Voltage deviation (%)

1.250
-0.05

Reference Voltage (V)

1.248

-0.10
1.246

1.244
-0.15

1.242

-0.20
1.240

-0.25 1.238
-50 -30 -10 10 30 50 70 90 -50 -25 0 25 50 75 100 125

Temperature (oC) Temperature (oC)

Short Circuit Current Dropout Voltage

3.0 1.25
TJ=25OC TJ=25OC
Output Short Circuit Current (A)

1.20
2.5
Drop-out Voltage (V)

1.15
2.0

1.10
1.5
1.05

1.0
1.00

0.5
0.95

0.0 0.90
1 2 3 4 5 6 7 8 9 10 0 0.2 0.4 0.6 0.8 1
Input/Output Differential Voltage(V) Load Current (A)

Adjust Pin Current Minimum Operating Current

45 7
Minimum Operation Current (mA)

40
6
Adjust Pin Current (µA)

35 TJ=25OC
5
30

25 4

20 3

15
2
10
1
5

0 0
-50 -25 0 25 50 75 100 125 0 1 2 3 4 5 6 7 8 9

Temperature ( oC) Input/Output Differential Voltage(V)

14 Rev.S.02
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

Load Transient Response Line Transient Response

TJ=25OC
Output Voltage

TJ=25OC
Deviation (V)

0.1 CIN=10µF
30mV
VO Deviation
0
∆VO
0
COUT=10µF
-0.1
COUT=1µF -30mV
COUT=0µF
VIN=5V
CIN=CO=1mF, IO=0.1A, VO=3.3V
Load Current(A)

2 VO=3.3V
IO Preload=100mA VIN
1
6V
0
5V

0.0 25 50
Time (µS) Time (µS)

Rev.S.02 15
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Tape and Reel Dimension

TO-252-2
P

PIN 1 W
AME AME

Carrier Tape, Number of Components Per Reel and Reel Size

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

SOT-223
P

AME AME

PIN 1

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

16 Rev.S.02
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Package Dimension

SOT-223

Top View Side View MILLIMETERS INCHES

D SYMBOLS
B1 MIN MAX MIN MAX
θ
C A1 0.01 0.10 0.0004 0.0039
B 0.60 0.84 0.0236 0.0330
13o(4X)
H E B1 2.90 3.15 0.1140 0.1240
C 0.24 0.38 0.0094 0.0150
D 6.30 6.71 0.2480 0.2640
E 3.30 3.71 0.1299 0.1460
e
F 1.40 1.80 0.0551 0.0709
Front View 13o(4X) e 2.30 BSC 0.0906 BSC
F H 6.70 7.30 0.2638 0.2874
o o o
A1
B θ 0 10 0 10 o

TO-220-3

Top View MILLIMETERS INCHES

SYMBOLS
O MIN MAX MIN MAX

M
A 5.58 7.49 0.2197 0.2949

I C 2.03 4.83 0.0800 0.1902

N D 0.50 1.40 0.0197 0.0550
G
E 0.30 1.15 0.0118 0.0453
K G 9.65 10.67 0.3799 0.4200
P
I 3.53 4.09 0.1390 0.1610
Side View K 0.50 1.15 0.0197 0.0453
M 1.14 1.78 0.0449 0.0700
C D N 2.28 2.80 0.0898 0.1102
E
A O 12.70 14.74 0.5000 0.5803
P 14.22 16.51 0.5600 0.6500

Rev.S.02 17
 AME, Inc.
1A Low Dropout
AME1117 Positive Voltage Regulator

n Package Dimension

TO-252-2 MILLIMETERS INCHES

SYMBOLS
Top View Side View MIN MAX MIN MAX
E A 0.43 0.58 0.0169 0.0230
B A
K B 1.60 1.95 0.0630 0.0768
C 0.51 1.78 0.0200 0.0701
L D 0.43 0.60 0.0169 0.0236
E 6.35 6.80 0.2500 0.2677
F 5.36 7.20 0.2110 0.2835
F
G 2.20 3.00 0.0866 0.1181
H - * 2.30 - *0.0906
J - 0.97 - 0.0380
K 5.20 5.50 0.2047 0.2165
G C
L 1.40REF 0.055REF

*: Typical Value
J
Notes:
D
H 1. Controlling dimension: Millimeters.
2. Maximum lead thickness includes lead finish thickness Mini-
mum lead thickness is the minimum thickness of base material.

18 Rev.S.02
 www.ame.com.tw
E-Mail: sales@ame.com.tw

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