The AME8800/8811 family of positive, linear regulators feature low quiescent current (30µA typ.) with low
dropout voltage, making them ideal for battery applications. The space-saving SOT-23, SOT-25, SOT-89 and
TO-92 packages are attractive for "Pocket" and "Hand
Held" aplications.
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under
the "Worst" of operating conditions.
The AME8800/8811 is stable with an output capacitance
of 2.2µF or greater.
300mA CMOS LDO
nn
n Features
nn
l Very Low Dropout Voltage
l Guaranteed 300mA Output
l Accurate to within 1.5%
l 30µA Quiescent Current
l Over-Temperature Shutdown
l Current Limiting
l Short Circuit Current Fold-back
l Space-Saving SOT-23, SOT-25, SOT-89 and
TO-92 Package
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
nn
n Applications
nn
nn
n Functional Block Diagram
nn
Overcurrent
Shutdown
Thermal
Shutdown
AMP
=1.215V
V
ref
R1
R2
OUTIN
GND
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
nn
n T ypical Application
nn
IN
5V
C1
1µF
AME8800
IN
AME8811
GND
OUT
C2
2.2
OUT
µ
F
1
AME, Inc.
AME8800 / 881 1
nn
n Pin Configuration
nn
TO-92
Front View
1
23
AME8800
1. GND
2. V
IN
3. V
OUT
AME881 1
1. V
OUT
2. GND
3. V
IN
300mA CMOS LDO
SOT-23
Top View
3
12
1. GND
2. V
OUT
3. V
IN
SOT-25
Top View
5
12 3
4
1. GND4. NC
2. V
3. V
IN
OUT
5. NC
SOT-89
Top View
12
AME8800
1. GND
2. V
IN
3. V
OUT
3
AME8811
1. V
OUT
2. GND
3. V
IN
2
AME, Inc.
AME8800 / 881 1
nn
n Ordering Information (contd.)
nn
Pa rt Numbe rMa rking Output P ackage Opera ting Tem p.
AME8800AEET AAAww3.3VSOT-23
AME8800BEET AABww3.0VSOT-23
AME8800CEET AACww2.8VSOT-23
AME8800DEET AADww2.5VSOT-23
AME8800EEET AAEww3.8VSOT-23
AME8800FEET ABNww3.6VSOT-23
AME8800GEET ACDww3.5VSOT-23
AME8800HEET AEDww2.7VSOT-23
AME8800IEETAELww3.4VSOT-23
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
C to +85OC
-40
O
-40
C to +85OC
O
-40
C to +85OC
300mA CMOS LDO
AME8800JEET AGNww2.85VSOT-23
AME8800KEET AHPww3.7VSOT-23
AME8800LEET AJWww1.5VSOT-23
AM E 8800M E ETAJXww1.8VSO T-23
AME8800NEET AKGww2.9VSOT-23
AME8800OEET AKHww3.1VSOT-23
AME8800AEEV ABRww3.3VSOT-25
AME8800BEEV ABSww3.0VSOT-25
AME8800CEEV ABTww2.8VSOT-25
AME8800DEEV ABUww2.5VSOT-25
AME8800EEEV ABVww3.8VSOT-25
AME8800FEEV ABWww3.6VSOT-25
AME8800GEEV ACEww3.5VSOT-25
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
C to +85OC
-40
O
-40
C to +85OC
O
C to +85OC
-40
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
AME8800HEEV AEEww2.7VSOT-25
O
-40
C to +85OC
3
AME, Inc.
AME8800 / 881 1
nn
n Ordering Information (contd.)
nn
Pa rt Numbe rMa rking Output Package Ope rating Tem p.
AME 8800IEE VA E Mww3.4VS O T-25
AME8800JEEV AGOww2.85VSOT-25
AME8800KEEV AHQww3.7VSOT-25
AM E 8800LE E VA JUww1.5VS O T-25
AME8800MEEV AJVww1.8VSOT-25
AM E 8800NE E VA K Iww2.9VSO T-25
AM E 8800O E E V A K Jww3.1VS O T-25
AME8800AEFT
AME8800BEFT
AME8800CEFT
AME8800DEFT
AME8800EEFT
AME8800FEFT
AME8800GEFT
AME8800HEFT
AME8800IEFT
AME8800JEFT
AME8800KEFT
AME8800LEFT
AME8800MEFT
AME8800NEFT
AME8800OEFT
AME8800SEFT
A8800
AEFww
A8800
BEFww
A8800
CEF ww
A8800
DEF ww
A8800
EEFww
A8800
FEFww
A8800
GEFww
A8800
HEF ww
A8800
IEFww
A8800
JE Fw w
A8800
KEFww
A8800
LEF ww
A8800
MEFww
A8800
NEF ww
A8800
OEFww
A8800
SEFww
3.3VS O T-89
3.0VS O T-89
2.8VS O T-89
2.5VS O T-89
3.8VS O T-89
3.6VS O T-89
3.5VS O T-89
2.7VS O T-89
3.4VS O T-89
2.85VSO T-89
3.7VS O T-89
1.5VS O T-89
1.8VS O T-89
2.9VS O T-89
3.1VS O T-89
5.0VS O T-89
O
C to +85OC
-40
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
300mA CMOS LDO
4
AME, Inc.
AME8800 / 881 1
nn
n Ordering Information (contd.)
nn
Pa rt NumberM arking Output P a ckage Operating Temp.
AME
AME8800AEAT
AME8800BEAT
AME8800CEAT
AME8800DEAT
AME8800EEAT
AME8800FEAT
AME8800GEAT
AME8800HEAT
8800
AEAT
yyww
AME
8800
BEAT
yyww
AME
8800
CEAT
yyww
AME
8800
DEAT
yyww
AME
8800
EEAT
yyww
AME
8800
FEAT
yyww
AME
8800
GEAT
yyww
AME
8800
HEAT
yyww
3.3VTO-92
3.0VTO-92
2.8VTO-92
2.5VTO-92
3.8VTO-92
3.6VTO-92
3.5VTO-92
2.7VTO-92
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
300mA CMOS LDO
5
AME, Inc.
AME8800 / 881 1
nn
n Ordering Information (contd.)
nn
Pa rt NumberM a rking Output Pa ckage Ope rating Te mp .
AME
AM E8800IEAT
AME8800JEAT
AME8800KEAT
AME8800LEAT
AME8800MEAT
AME8800NEAT
AME8800OEAT
8800
IE AT
yyww
AME
8800
JE A T
yyww
AME
8800
KEAT
yyww
AME
8800
LEA T
yyww
AME
8800
MEAT
yyww
AME
8800
NEAT
yyww
AME
8800
OEAT
yyww
3.4VTO-92
2.85VTO-92
3.7VTO-92
1.5VTO-92
1.8VTO-92
2.9VTO-92
3.1VTO-92
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
300mA CMOS LDO
6
AME, Inc.
AME8800 / 881 1
nn
n Ordering Information (contd.)
nn
Pa rt NumberMa rkingOutput Packa ge Operating Te m p.
AME
AM E8811AEAT
AME8811BEAT
AME8811CEAT
AME8811DEAT
AME8811EEAT
AME8811FEAT
AME8811GEAT
AME8811HEAT
8811
AEAT
yyww
AME
8811
BEAT
yyww
AME
8811
CEAT
yyww
AME
8811
DEAT
yyww
AME
8811
EEAT
yyww
AME
8811
FEAT
yyww
AME
8811
GEAT
yyww
AME
8811
HEAT
yyww
3.3VTO-92
3.0VTO-92
2.8VTO-92
2.5VTO-92
3.8VTO-92
3.6VTO-92
3.5VTO-92
2.7VTO-92
O
-40
C to +85OC
O
-40
C to +85OC
O
C to +85OC
-40
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
300mA CMOS LDO
7
AME, Inc.
AME8800 / 881 1
nn
n Ordering Information (contd.)
nn
Pa rt NumberMarkingOutput P ackage Operating Te m p.
AME
AME8811IEAT
AME8811JEAT
AME8811KEAT
AME8811LEAT
AME8811MEAT
AME8811NEAT
AME8811OEAT
8811
IEAT
yyww
AME
8811
JEAT
yyww
AME
8811
KEAT
yyww
AME
8811
LEAT
yyww
AME
8811
MEAT
yyww
AME
8811
NEAT
yyww
AME
8811
OEAT
yyww
3.4VTO-92
2.85VTO-92
3.7VTO-92
1.5VTO-92
1.8VTO-92
2.9VTO-92
3.1VTO-92
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
O
C to +85OC
-40
300mA CMOS LDO
8
AME, Inc.
AME8800 / 881 1
nn
n Ordering Information
nn
Pa rt NumberMa rkingOutput Packa ge Operating Te m p.
AM E8811AEFT
AME8811BEFT
AME8811CEFT
AME8811DEFT
AME8811EEFT
AME8811FEFT
AME8811GEFT
AME8811HEFT
AME8811IEFT
AME8811JEFT
AME8811KEFT
AME8811LEFT
AME8811MEFT
AME8811NEFT
AME8811OEFT
A8811
AEFww
A8811
BEFww
A8811
CEFww
A8811
DEFww
A8811
EEFww
A8811
FEFww
A8811
GEF ww
A8811
HEFww
A8811
IEFww
A8811
JEFww
A8811
KEFww
A8811
LEFww
A8811
MEFww
A8811
NEFww
A8811
OEF ww
3.3VSOT-89
3.0VSOT-89
2.8VSOT-89
2.5VSOT-89
3.8VSOT-89
3.6VSOT-89
3.5VSOT-89
2.7VSOT-89
3.4VSOT-89
2.85VS OT-89
3.7VSOT-89
1.5VSOT-89
1.8VSOT-89
2.9VSOT-89
3.1VSOT-89
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
O
-40
C to +85OC
300mA CMOS LDO
Please consult AME sales office or authorized Rep./Distributor for other output voltage and package typeavailability .
9
AME, Inc.
AME8800 / 881 1
A b solut e Maximum Rati ngs:
nnnn
ParameterMaximumUnit
Inpu t Voltag e
Output Current
Output V ol tage
ESD Cl a ssi fica ti on
R ecom m ended O perat ing Conditions:
nnnn
Para meterRatingUnit
300mA CMOS LDO
8V
PD / (VIN - VO)mA
GND - 0.3 to V
+ 0.3V
IN
B
Am bient Temperature Range
Junct ion Temperature
-40 to +85
-40 to +125
o
C
o
C
Caution: Stress above t he listed absolute rating may cause permanent damage to the device
10
AME, Inc.
AME8800 / 881 1
Thermal Informati on
nnnn
ParameterMaximumUnit
Thermal R esistance (
Thermal R esistance (
300mA CMOS LDO
SOT - 23110
SOT - 2581
)
θ
jc
o
C / W
SOT - 8938
TO-9280
SOT - 23325
SOT - 25260
)
θ
ja
o
C / W
SOT - 89180
TO - 92180
SOT - 23300
SOT - 25380
I n ternal Power Dissipation (PD)
SOT - 89550
mW
(∆T = 100oC)
SOT - 892750*
TO - 92625
Maximu m Junction Temperat ure
Maximu m Lead T em per at ure ( 10 Sec)
* With heat sink capabl e of t wice times the
150
300
θ
jc
o
C
o
C
Caution: Stress above t he listed absolute rating may cause permanent damage to the device
11
AME, Inc.
AME8800 / 881 1
nn
n Electrical Specifications
nn
TA = 25oC unles s otherwise not ed
ParameterSymbolMinTypMaxUnits
Input V oltage V
Output V oltage Acc uracy V
Dropout V oltageV
Output Current I
Current Li m itI
Short Circuit Current I
Quiesc ent CurrentI
Ground Pi n Current I
Line Regulation REG
IN
O
DROPOUT
O
LIM
SC
Q
GND
LIN E
IO=300mA
V
O=VONOM
I
=1mA
O
IN=VO
V
O
+1 to
+2
V
Test Condition
I
=1mA
O
1.4V<V
-2.0%
2.0V<V
2.8V<V
>1.2V
V
O
>1.2V
V
O
V
<0.8V
O
I
=0mA
O
=1mA t o 300mA
I
O
2.0V<=V
300mA CMOS LDO
Note 17V
-1.51.5%
<=2.0V1300
O(NOM)
<=2.8V400
O(NOM)
O(NOM)
< 2.0V-0.150.15
V
O
< 4.0V-0. 10.020.1
O
4.0V <= Vo-0.40.20.4
See
chart
300
300mA
300450mA
150300mA
3050
35
mV
µ
µ
%
A
A
Load Regulat ion REG
LOAD
=1mA t o 300mA
I
O
-10.21%
Over Temerat ure S hutdown OTS150
Over Temerature Hy sterisi s OTH30
V
Temperature CoefficientTC30
O
f=1kHz50
I
=100mA
Power Supply Rej ection
PSRRf=10kHz20dB
O
=2.2µF
C
O
f=100kHz15
f=10Hz to 100k Hz
Output V oltage Nois e eN
Note1:V
IN(min)=VOUT+VDROPOUT
I
=10mA
O
Co=2.2µF
30
o
o
ppm/
Vrms
µ
C
C
o
C
12
AME, Inc.
AME8800 / 881 1
nn
n Detailed Description
nn
The AME8800/8811 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error
amplifier, over-current protection, and thermal shutdown.
The P-channel pass transistor receives data from the
error amplifier, over-current shutdown, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds
150oC, or the current exceeds 300mA. During thermal
shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops
below 120oC.
The AME8800/881 1 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The AME8800/8811
also incorporates current foldback to reduce power dissipation when the output is short circuited. This feature
becomes active when the output drops below 0.8 volts,
and reduces the current flow by 65%. Full current is
restored when the voltage exceeds 0.8 volts.
300mA CMOS LDO
nn
n External Capacitors
nn
The AME8800/8811 is stable with an output capacitor
to ground of 2.2µF or greater . Ceramic capacitors have
the lowest ESR, and will offer the best AC performance.
Conversely, Aluminum Electrolytic capacitors exhibit
the highest ESR, resulting in the poorest AC response.
Unfortunately , large value ceramic capacitors are comparatively expensive. One option is to parallel a 0.1uF
ceramic capacitor with a 10uF Aluminum Electrolytic.
The benefit is low ESR, high capacitance, and low overall cost.
A second capacitor is recommended between the input
and ground to stabilize VIN. The input capacitor should
be at least 0.1µF to have a beneficial effect.
All capacitors should be placed in close proximity to
the pins. A "Quiet" ground termination is desirable.
This can be achieved with a "Star" connection.
13
AME, Inc.
AME8800 / 881 1
Ground Current vs. Input Voltage
45
40
35
A)
µ
µµ
µ
30
25
20
15
10
Ground Current (
5
0
012345678
Drop Out Voltage vs Output Voltage
300
250
200
150
100
Drop Out Voltage (mV)
50
85OC
25OC
Input Voltage (V)
I
LOAD
I
LOAD
I
LOAD
=300mA
=200mA
=100mA
Load Step ( 1mA-300mA)
Output
I
Load
(200mA/DIV) Vo(5mV/DIV)
L
I
TIME( 20mS/DIV)
Drop Out Voltage vs Load Current
250
Top to bottom
V
=2.5V
200
150
100
50
Dropout Voltage (mV)
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
OUT
=2.8V
=3.0V
=3.3V
=3.5V
=3.8V
300mA CMOS LDO
CL=2.2µF
C
=2.2µF
IN
0
14
0
2.52.7533.253.53.754
Output Voltage (V)
Power Supply Rejection Ratio
0
-10
CL=2.2µF Tantalum
-20
C
=0
BYP
-30
-40
-50
PSRR (dB)
100mA
-60
-70
100µA
100µA
-80
1.0E+011.0E+031.0E+051.0E +07
Frequency (Hz)
100mA
10mA
1mA
0
050100150200250300
Load Current (mA)
Short Circuit Response
R
=100
LOAD
R
=0.1
SHORT
(400mA/DIV)
LOAD
(1V/DIV) I
OUT
V
TIME (2mS/DIV)
Ω
Ω
0
0
AME, Inc.
AME8800 / 881 1
Overtemperature Shutdown
(200mA/DIV)
OUT
(1V/DIV) I
OUT
V
TIME (0.5Sec/DIV)
Noise Measurement
R
LOAD
=6.6
300mA CMOS LDO
Current Limit Response
R
=3.3
LOAD
0
Ω
0
(200mA/DIV)
OUT
(1V/DIV) I
OUT
V
TIME (2mS/DIV)
Transient Line Response
Ω
0
0
Vo (1mV/ DIV)
75OC rise
Output Current (mA)
With HS capable of twice
CL = 2.2µF
NO FILTER
TIME (20mS/DIV)
Safe Operating Area
SOT-223
DPAK-2
θ
jc
(1V/DIV)
IN
(1mV/DIV) V
O
V
TIME (2mS/DIV)
V
= 5.0V
IN DC
CL = 2.2µF
Input-Output Voltage Differential (V)
15
AME, Inc.
AME8800 / 881 1
Stability vs. ESR vs I
10000
1000
100
ΩΩ
Ω)
10
ESR (Ω
0.1
0.01
Unstable Region
1
050100150200
Stable Region
Untested Region
ILOAD (mA)
LOAD
CL=1µF
300mA CMOS LDO
Stability vs. ESR vs I
10000
1000
)
Ω
ΩΩ
Ω
ESR (
0.01
Unstable Region
100
10
1
0.1
050100150200
Stable Region
Untested Region
ILOAD (mA)
LOAD
CL=2µF
Stability vs. ESR vs I
10000
Unstable Region
1000
100
)
Ω
ΩΩ
Ω
10
ESR (
1
0.1
0.01
050100150200
Stable Region
Untested Region
ILOAD (mA)
LOAD
CL=3µF
Stability vs. ESR vs I
10000
1000
)
Ω
ΩΩ
Ω
ESR (
0.001
Unstable Region
100
10
1
0.1
0.01
050100150200
Stable Region
Untested Region
ILOAD (mA)
LOAD
CL=10µF
16
AME, Inc.
AME8800 / 881 1
Quiescent Current vs. Temp.
35
34
33
32
31
30
29
28
27
Quiescent Current @ 5V (uA)
Load Regulation (%)
-45-525558 5
Load Regulation vs. Temp.
0.58
0.56
0.54
0.52
0.50
0.48
0.46
0.44
0.42
0.40
-45-5 255585
Temperature (0C)
300mA CMOS LDO
Dropout Voltage vs. Temp.
220
210
200
190
180
(mV)
170
160
150
Dropout Voltage @ 300mA
-45-5 255585
Tem perature (0C)
V
OUT
=3V
Tem pera ture (0C)
17
AME, Inc.
AME8800 / 881 1
nn
n Package Dimension
nn
SOT-23
300mA CMOS LDO
SYMBOLS
A1.001.400.03940.0551
A
1
A
2
b0.350.500.01380.0197
C0.090.250.00350.0098
D2.703.100.10630.1220
E1.401.800.05510.0709
e
H2.603.000.10240.1181
L0.350.550.01380.0197
1. PACKAGE OUTL INE EXCLUS IVE OF ANY M O L D F L ASHES
DIMENSION
2. PACKAGE OUTL INE EXCLUS IVE OF BURR DIMENS ION
MILLIMETERSINCHES
MINMAXMINMAX
°
4
°
6
°
4
°
6
19
www.ame.com.tw
E-Mail: info@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. , January 2002
Document: 2006-DS8800/8811-F
U.S. HeadquarterCorporate Headquarter
Analog Microelectronics, Inc.AME, Inc.
3100 De La Cruz Blvd. Suite 2012F, 189 Kang-Chien Road, Nei-Hu District
Santa Clara, CA. 95054-2046Taipei 114, Taiwan, R.O.C.
Tel : (408) 988-2388Tel : 886 2 2627-8687
Fax: (408) 988-2489Fax : 886 2 2659-2989
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