AME, Inc.
1
AME8800 / 8811 300mA CMOS LDO
nnnnn Typical Application
nnnnn Functional Block Diagram
nnnnn Features
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
nnnnn General Description
The AME8800/8811 family of positive, linear regula-
tors feature low quiescent current (30µA typ.) with low
dropout voltage, making them ideal for battery applica-
tions. 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.
nnnnn Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
AME8800
AME8811
O U TIN
C2
2.2µF
C1
1µF
IN
G N D
O U T
5V
Overcurrent
Shutdown
Therma l
Shutdown
AMP
G N D
OUTIN
R1
R2V ref=1.215V
AME, Inc.
2
300mA CMOS LDOAME8800 / 8811
nnnnn Pin Configuration
TO-92
Front View
AME8800
1. GND
2. VIN
3. VOUT
AME8811
1. VOUT
2. GND
3. VIN
1 2 3
SOT-23
Top View
3
1 2
1. GND
2. VOUT
3. VIN
SOT-25
Top View
1. GND 4. NC
2. VIN 5. NC
3. VOUT
5 4
1 2 3
SOT-89
Top View
1 2 3
AME8800
1. GND
2. VIN
3. VOUT
AME8811
1. VOUT
2. GND
3. VIN
AME, Inc.
3
AME8800 / 8811 300mA CMOS LDO
nnnnn Ordering Information (contd.)
Pa rt Num be r Ma rking Output Pa cka ge Ope ra ting Te m p.
AME8800AEET AAAww 3.3V SOT-23 -40OC to +85OC
AME8800BEET AABww 3.0V SOT-23 -40OC to +85OC
AME8800CEET AACww 2.8V SOT-23 -40OC to +85OC
AME8800DEET AADww 2.5V SOT-23 -40OC to +85OC
AME8800EEET AAEww 3.8V SOT-23 -40OC to +85OC
AME8800FEET ABNww 3.6V SOT-23 -40OC to +85OC
AME8800GEET ACDww 3.5V SOT-23 -40OC to +85OC
AME8800HEET AEDww 2.7V SOT-23 -40OC to +85OC
AME8800IEET AELww 3.4V SOT-23 -40OC to +85OC
AME8800JEET AGNww 2.85V SOT-23 -40OC to +85OC
AME8800KEET AHPww 3.7V SOT-23 -40OC to +85OC
AME8800LEET AJW ww 1.5V SOT-23 -40OC to +85OC
AME8800MEET AJXww 1.8V SOT-23 -40OC to +85OC
AME8800NEET AKGww 2.9V SOT-23 -40OC to +85OC
AME8800OEET AKHww 3.1V SOT-23 -40OC to +85OC
AME8800AEEV ABRww 3.3V SOT-25 -40OC to +85OC
AME8800BEEV ABSww 3.0V SOT-25 -40OC to +85OC
AME8800CEEV ABTww 2.8V SOT-25 -40OC to +85OC
AME8800DEEV ABUww 2.5V SOT-25 -40OC to +85OC
AME8800EEEV ABVww 3.8V SOT-25 -40OC to +85OC
AME8800FEEV ABW ww 3.6V SOT-25 -40OC to +85OC
AME8800GEEV ACEww 3.5V SOT-25 -40OC to +85OC
AME8800HEEV AEEww 2.7V SOT-25 -40OC to +85OC
AME, Inc.
4
300mA CMOS LDOAME8800 / 8811
Pa rt Num be r M a rking Output Pa cka ge Ope ra ting Te m p.
AM E8800IEEV AEM ww 3.4V SOT-25 -40OC to +85OC
AM E8800JEEV AGOww 2.85V SOT-25 -40OC to +85OC
AM E8800KEEV AHQww 3.7V SOT-25 -40OC to +85OC
AM E8800LEEV AJUww 1.5V SOT-25 -40OC to +85OC
AM E8800M EEV AJVww 1.8V SOT-25 -40OC to +85OC
AM E8800NEEV AKIww 2.9V SOT-25 -40OC to +85OC
AM E8800OEEV AKJww 3.1V SOT-25 -40OC to +85OC
AM E8800AEFT A8800 AEFww 3.3V SOT-89 -40
OC to +85OC
AM E8800BEFT A8800 BEFww 3.0V SOT-89 -40
OC to +85OC
AM E8800CEFT A8800 CEFww 2.8V SOT-89 -40
OC to +85OC
AM E8800DEFT A8800 DEFww 2.5V SOT-89 -40
OC to +85OC
AM E8800EEFT A8800 EEFww 3.8V SOT-89 -40
OC to +85OC
AM E8800FEFT A8800 FEFww 3.6V SOT-89 -40
OC to +85OC
AM E8800GEFT A8800 GEFww 3.5V SOT-89 -40
OC to +85OC
AM E8800HEFT A8800 HEFww 2.7V SOT-89 -40
OC to +85OC
AM E8800IEFT A8800 IEFww 3.4V SOT-89 -40
OC to +85OC
AM E8800JEFT A8800 JEFww 2.85V SOT-89 -40
OC to +85OC
AM E8800KEFT A8800 KEFww 3.7V SOT-89 -40
OC to +85OC
AM E8800LEFT A8800 LEFww 1.5V SOT-89 -40
OC to +85OC
AM E8800M EFT A8800 M EFww 1.8V SOT-89 -40
OC to +85OC
AM E8800NEFT A8800 NEFww 2.9V SOT-89 -40
OC to +85OC
AM E8800OEFT A8800 OEFww 3.1V SOT-89 -40
OC to +85OC
AM E8800SEFT A8800 SEFww 5.0V SOT-89 -40
OC to +85OC
nnnnn Ordering Information (contd.)
AME, Inc.
5
AME8800 / 8811 300mA CMOS LDO
nnnnn Ordering Information (contd.)
Part Number Marking Output Package Operating Temp.
AME8800AEAT
AME
8800
AEAT
yyww
3.3V TO-92 -40OC to +85OC
AME8800BEAT
AME
8800
BEAT
yyww
3.0V TO-92 -40OC to +85OC
AME8800CEAT
AME
8800
CEAT
yyww
2.8V TO-92 -40OC to +85OC
AME8800DEAT
AME
8800
DEAT
yyww
2.5V TO-92 -40OC to +85OC
AME8800EEAT
AME
8800
EEAT
yyww
3.8V TO-92 -40OC to +85OC
AME8800FEAT
AME
8800
FEAT
yyww
3.6V TO-92 -40OC to +85OC
AME8800GEAT
AME
8800
GEAT
yyww
3.5V TO-92 -40OC to +85OC
AME8800HEAT
AME
8800
HEAT
yyww
2.7V TO-92 -40OC to +85OC
AME, Inc.
6
300mA CMOS LDOAME8800 / 8811
nnnnn Ordering Information (contd.)
Part Number Marking Output Package Operating Temp.
AME8800IEAT
AME
8800
IEAT
yyww
3.4V TO-92 -40OC to +85OC
AME8800JEAT
AME
8800
JEAT
yyww
2.85V TO-92 -40OC to +85OC
AME8800KEAT
AME
8800
KEAT
yyww
3.7V TO-92 -40OC to +85OC
AME8800LEAT
AME
8800
LEAT
yyww
1.5V TO-92 -40OC to +85OC
AME8800MEAT
AME
8800
MEAT
yyww
1.8V TO-92 -40OC to +85OC
AME8800NEAT
AME
8800
NEAT
yyww
2.9V TO-92 -40OC to +85OC
AME8800OEAT
AME
8800
OEAT
yyww
3.1V TO-92 -40OC to +85OC
AME, Inc.
7
AME8800 / 8811 300mA CMOS LDO
nnnnn Ordering Information (contd.)
Part Number Marking Output Package Operating Temp.
AME8811AEAT
AME
8811
AEAT
yyww
3.3V TO-92 -40OC to +85OC
AME8811BEAT
AME
8811
BEAT
yyww
3.0V TO-92 -40OC to +85OC
AME8811CEAT
AME
8811
CEAT
yyww
2.8V TO-92 -40OC to +85OC
AME8811DEAT
AME
8811
DEAT
yyww
2.5V TO-92 -40OC to +85OC
AME8811EEAT
AME
8811
EEAT
yyww
3.8V TO-92 -40OC to +85OC
AME8811FEAT
AME
8811
FEAT
yyww
3.6V TO-92 -40OC to +85OC
AME8811GEAT
AME
8811
GEAT
yyww
3.5V TO-92 -40OC to +85OC
AME8811HEAT
AME
8811
HEAT
yyww
2.7V TO-92 -40OC to +85OC
AME, Inc.
8
300mA CMOS LDOAME8800 / 8811
Part Number Marking Output Package Operating Temp.
AME8811IEAT
AME
8811
IEAT
yyww
3.4V TO-92 -40OC to +85OC
AME8811JEAT
AME
8811
JEAT
yyww
2.85V TO-92 -40OC to +85OC
AME8811KEAT
AME
8811
KEAT
yyww
3.7V TO-92 -40OC to +85OC
AME8811LEAT
AME
8811
LEAT
yyww
1.5V TO-92 -40OC to +85OC
AME8811MEAT
AME
8811
MEAT
yyww
1.8V TO-92 -40OC to +85OC
AME8811NEAT
AME
8811
NEAT
yyww
2.9V TO-92 -40OC to +85OC
AME8811OEAT
AME
8811
OEAT
yyww
3.1V TO-92 -40OC to +85OC
nnnnn Ordering Information (contd.)
AME, Inc.
9
AME8800 / 8811 300mA CMOS LDO
nnnnn Ordering Information
Please consult AME sales office or authorized Rep./Distributor for other output voltage and package typeavailability.
Part Number Marking Output Package Operating Temp.
AME8811AEFT A8811 AEFww 3.3V SOT-89 -40
OC to +85OC
AME8811BEFT A8811 BEFww 3.0V SOT-89 -40
OC to +85OC
AME8811CEFT A8811 CEFww 2.8V SOT-89 -40
OC to +85OC
AME8811DEFT A8811 DEFww 2.5V SOT-89 -40
OC to +85OC
AME8811EEFT A8811 EEFww 3.8V SOT-89 -40
OC to +85OC
AME8811FEFT A8811 FEFww 3.6V SOT-89 -40
OC to +85OC
AME8811GEFT A8811 GEFww 3.5V SOT-89 -40
OC to +85OC
AME8811HEFT A8811 HEFww 2.7V SOT-89 -40
OC to +85OC
AME8811IEFT A8811 IEFww 3.4V SOT-89 -40
OC to +85OC
AME8811JEFT A8811 JEFww 2.85V SOT-89 -40
OC to +85OC
AME8811KEFT A8811 KEFww 3.7V SOT-89 -40
OC to +85OC
AME8811LEFT A8811 LEFww 1.5V SOT-89 -40
OC to +85OC
AME8811MEFT A8811 MEFww 1.8V SOT-89 -40
OC to +85OC
AME8811NEFT A8811 NEFww 2.9V SOT-89 -40
OC to +85OC
AME8811OEFT A8811 OEFww 3.1V SOT-89 -40
OC to +85OC
AME, Inc.
10
300mA CMOS LDOAME8800 / 8811
nnnnAbsolute Maximum Ratings:
Parameter Maximum Unit
8 V
PD / (VIN - VO) mA
GND - 0.3 to VIN + 0.3 V
B
nnnnRecommended Operating Conditions:
Parameter Rating Unit
-40 to +85 oC
-40 to +125 oC
Caution: Stress above the listed absolute rating may cause permanent damage to the device
Input Voltage
Output Current
Output Voltage
ESD Classification
Ambient Temperature Range
Junction Temperature
AME, Inc.
11
AME8800 / 8811 300mA CMOS LDO
nnnnThermal Information
Parameter Maximum Unit
SOT-23 110
SOT-25 81
SOT-89 38
TO-92 80
SOT-23 325
SOT-25 260
SOT-89 180
TO-92 180
SOT-23 300
SOT-25 380
SOT-89 550
SOT-89 2750*
TO-92 625
150 oC
300 oC
* With heat sink capable of twice times the θjc
Caution: Stress above the listed absolute rating may cause permanent damage to the device
oC / W
oC / W
mW
Thermal Resistance (θjc)
Thermal Resistance (θja)
Internal Power Dissipation (PD)
(∆T = 100oC)
Maximum Junction Temperature
Maximum Lead Temperature ( 10 Sec)
AME, Inc.
12
300mA CMOS LDOAME8800 / 8811
nnnnn Electrical Specifications
Parameter Symbol Min Typ Max Units
Input Voltage VIN Note 1 7 V
Output Voltage Accuracy VO -1.5 1.5 %
1.4V1.2V
IO=1mA
Test Condition
mV
Power Supply Rejection IO=100mA
CO=2.2µF
VO>1.2V
IO=0mA
IO=1mA to 300mA
Line Regulation REGLINE
Output Voltage Noise eN
f=10Hz to 100kHz
IO=10mA
30
%
µVrms
VO<0.8V
IO=1mA to 300mA
IO=1mA
VIN=VO+1 to
VO+2
Co=2.2µF
AME, Inc.
13
AME8800 / 8811 300mA CMOS LDO
nnnnn Detailed Description
The AME8800/8811 family of CMOS regulators con-
tain a PMOS pass transistor, voltage reference, error
amplifier, over-current protection, and thermal shut-
down.
The P-channel pass transistor receives data from the
error amplifier, over-current shutdown, and thermal pro-
tection circuits. During normal operation, the error am-
plifier compares the output voltage to a precision refer-
ence. Over-current and Thermal shutdown circuits be-
come active when the junction temperature exceeds
150oC, or the current exceeds 300mA. During thermal
shutdown, the output voltage remains low. Normal op-
eration is restored when the junction temperature drops
below 120oC.
The AME8800/8811 switches from voltage mode to cur-
rent mode when the load exceeds the rated output cur-
rent. This prevents over-stress. The AME8800/8811
also incorporates current foldback to reduce power dis-
sipation 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.
nnnnn External Capacitors
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 com-
paratively 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 over-
all 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.
AME, Inc.
14
300mA CMOS LDOAME8800 / 8811
-80
-70
-60
-50
-40
-30
-20
-10
0
1.0E+01 1.0E+03 1.0E+05 1.0E+07
Power Supply Rejection Ratio
PS
RR
(d
B)
Frequency (Hz)
100mA
10mA
1 m A100µA
100mA
100µA
C L=2.2µF Tantalum
C B Y P =0
0
5
10
15
20
25
30
35
40
45
0 1 2 3 4 5 6 7 8
Ground Current vs. Input Voltage
G
ro
un
d
Cu
rr
en
t (
µ µµµ A
)
Input Voltage (V)
85O C
25O C
Load Step ( 1mA-300mA)
I L(
20
0m
A/
DI
V)
V
o(
5m
V/
DI
V)
TIME( 20mS/DIV)
C L=2.2µF
C IN=2.2µF
Output
ILoad
0
0
50
100
150
200
250
300
2.5 2.75 3 3.25 3.5 3.75 4
Drop Out Voltage vs Output Voltage
Output Voltage (V)
D
ro
p
O
ut
V
ol
ta
ge
(m
V)
IL O A D=300mA
IL O A D=200mA
IL O A D=100mA
0
50
100
150
200
250
0 50 100 150 200 250 300
Drop Out Voltage vs Load Current
Load Current (mA)
D
ro
po
ut
V
ol
ta
ge
(m
V)
Top to bottom
V O U T =2.5V
V O U T =2.8V
V O U T =3.0V
V O U T =3.3V
V O U T =3.5V
V O U T =3.8V
Short Circuit Response
TIME (2mS/DIV)
V O
UT
(1V
/D
IV
)
I L
O
AD
(40
0m
A/
DI
V) R L O A D=100Ω
R S H O R T=0.1Ω
0
0
AME, Inc.
15
AME8800 / 8811 300mA CMOS LDO
CL = 2.2µF
NO FILTER
Transient Line Response
TIME (2mS/DIV)
V O
(1m
V/D
IV)
V IN
(1V
/D
IV
)
CL = 2.2µF
VIN DC = 5.0V
Current Limit Response
V O
UT
(1V
/D
IV
)
I
O
UT
(20
0m
A/
DI
V)
TIME (2mS/DIV)
R L O A D=3.3Ω
0
0
Overtemperature Shutdown
V O
UT
(1V
/D
IV
)
I
O
UT
(20
0m
A/
DI
V)
TIME (0.5Sec/DIV)
R L O A D=6.6Ω
0
0
Noise Measurement
TIME (20mS/DIV)
Vo
(1
mV
/ D
IV
)
Safe Operating Area
O
ut
pu
t C
ur
re
nt
(m
A)
Input-Output Voltage Differential (V)
SOT-223
DPAK-2
75OC rise
With HS capable of twice θjc
AME, Inc.
16
300mA CMOS LDOAME8800 / 8811
0.01
0.1
1
10
100
1000
10000
0 50 100 150 200
ILOAD (mA)
Stable Region
Untested Region
Unstable Region
ES
R
(Ω ΩΩΩ
)
C L=2µF
Stability vs. ESR vs ILOAD
0.01
0.1
1
10
100
1000
10000
0 50 100 150 200
Stable Region
Untested Region
Unstable Region
ILOAD (mA)
ES
R
(Ω ΩΩΩ
)
C L=3µF
Stability vs. ESR vs ILOAD
0.001
0.01
0.1
1
10
100
1000
10000
0 50 100 150 200
Stable Region
Untested Region
Unstable Region
ILOAD (mA)
ES
R
(Ω ΩΩΩ
)
C L=10µF
Stability vs. ESR vs ILOAD
0.01
0.1
1
10
100
1000
10000
0 50 100 150 200
ES
R
(Ω ΩΩΩ
)
Stable Region
Untested Region
Unstable Region
ILOAD (mA)
C L=1µF
Stability vs. ESR vs ILOAD
AME, Inc.
17
AME8800 / 8811 300mA CMOS LDO
27
28
29
30
31
32
33
34
35
-45 -5 25 55 85
Temperature (0C)
Qu
ie
sc
en
t C
ur
re
nt
@
5
V
(u
A)
Quiescent Current vs. Temp.
150
160
170
180
190
200
210
220
-45 -5 25 55 85
Temperature (0C)
D
ro
po
ut
V
ol
ta
ge
@
3
00
m
A
(m
V)
Dropout Voltage vs. Temp.
V OUT=3V
0.40
0.42
0.44
0.46
0.48
0.50
0.52
0.54
0.56
0.58
-45 -5 25 55 85
Temperature (0C)
Lo
ad
R
eg
ul
at
io
n
(%
)
Load Regulation vs. Temp.
AME, Inc.
18
300mA CMOS LDOAME8800 / 8811
nnnnn Package Dimension
SOT-23
SOT-25
MIN MAX MIN MAX
A 1.00 1.40 0.0394 0.0551
A1 0.00 0.15 0.0000 0.0059
A2 0.70 1.25 0.0276 0.0492
b 0.35 0.50 0.0138 0.0197
C 0.09 0.25 0.0035 0.0098
D 2.70 3.10 0.1063 0.1220
E 1.40 1.80 0.0551 0.0709
e
H 2.60 3.00 0.1024 0.1181
L 0.35 0.55 0.0138 0.0197
θ1θ1θ1θ1 0o 9o 0o 9o
R
SYMBOLS
MILLIMETERS INCHES
1.90 BSC 0.0748 BSC
0.95(TYP) 0.0374(TYP)
MIN MAX MIN MAX
A 1.00 1.45 0.0394 0.0571
A1 0.00 0.15 0.0000 0.0591
A2 0.70 1.25 0.0276 0.0492
b 0.35 0.55 0.0138 0.0217
C 0.08 0.25 0.0031 0.0098
D 2.70 3.10 0.1063 0.1220
E 1.40 1.80 0.0551 0.0709
e
H 2.60 3.00 0.1024 0.1181
L 0.30 - 0.0118 -
θ1θ1θ1θ1 0° 10° 0° 10°
S1 0.85 1.05 0.0335 0.0413
1.90 BSC 0.07480 BSC
SYMBOLS MILLIMETERS INCHES
AME, Inc.
19
AME8800 / 8811 300mA CMOS LDO
nnnnn Package Dimension
TO-92
SOT-89
MIN MAX MIN MAX
A 1.40 1.60 0.0551 0.0630
A1 0.89 - 0.0350 -
b 0.36 0.52 0.0142 0.0205
b1 0.41 0.56 0.0161 0.0220
C 0.35 0.44 0.0138 0.0173
D 4.40 4.60 0.1732 0.1811
D1 1.35 1.83 0.0531 0.0720
HE - 4.25 - 0.1673
E 2.29 2.60 0.0902 0.1024
e 2.90 3.10 0.1142 0.1220
H 0.35 0.70 0.0138 0.0276
S 1 1.40 1.60 0.0551 0.0630
S YMBOLS
MILLIMETERS INCHES
MIN MAX MIN MAX
A 4.32 4.95 0.170 0.195
b 0.36 0.51 0.014 0.020
E 3.30 3.94 0.130 0.155
e 2.41 2.67 0.095 0.105
e1 1.14 1.40 0.045 0.055
L 12.70 15.49 0.500 0.610
R 2.16 2.41 0.085 0.095
S1 1.14 1.52 0.045 0.060
W 0.41 0.56 0.016 0.022
D 4.45 4.95 0.175 0.195
a 4° 6° 4° 6°
NOTE:
DIMENSION
2. PACKAGE OUTLINE EXCLUSIVE OF BURR DIMENSION
1. PACKAGE OUTLINE EXCLUSIVE OF ANY MOLD FLASHES
SYMBOLS MILLIMETERS INCHES
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. Headquarter Corporate Headquarter
Analog Microelectronics, Inc. AME, Inc.
3100 De La Cruz Blvd. Suite 201 2F, 189 Kang-Chien Road, Nei-Hu District
Santa Clara, CA. 95054-2046 Taipei 114, Taiwan, R.O.C.
Tel : (408) 988-2388 Tel : 886 2 2627-8687
Fax: (408) 988-2489 Fax : 886 2 2659-2989
www.ame.com.tw
E-Mail: info@ame.com.tw