The AME8803/8814 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-26 package is attractive for "Pocket"
and "Hand Held" applications.
These rugged devices have both Thermal Shutdown,
and Current Fold-back to prevent device failure under the
"Worst" of operating conditions.
An additional feature is a "Power Good" detector, which
pulls low when the output is out of regulation. In applications requiring a low noise, regulated supply, place a
1000pF capacitor between Bypass and ground.
The AME8803/8814 is stable with an output capacitance of 2.2µF or greater.
n Features
300mA CMOS LDO
n Functional Block Diagram
IN
Overcurrent
Shutdown
Thermal
Shutdown
EN
BYP
PG
V
V
ref
ref
x110%
x90%
V
ref
AMP
=1.215V
R1
R2
OUT
GND
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 Noise Reduction Bypass Capacitor
l Power Good Detector
l Power-Saving Shutdown Mode
l Space-Saving SOT-26
l Factory Pre-set Output Voltages
l Low Temperature Coefficient
n Applications
l Instrumentation
l Portable Electronics
l Wireless Devices
l Cordless Phones
l PC Peripherals
l Battery Powered Widgets
l Electronic Scales
n Typical Application
EN
IN
AME8803
GND
OUTBYP
C1
C2
5V
1µF
1000pF
PG
OUTIN
C3
2.2µF
1
Page 2
AME, Inc.
A:
3.3V1:1.3V
E:
-40OC to 85
O
C
E:
SOT-2X
Y:6L:
Low Profile
B:
3.0V2:2.0VY:Lead Free & Low Profile
C:
2.8V3:4.2VZ:Lead Free
D:
2.5V4:4.0V
E:
3.8VF:3.6V
G:
3.5V
H:
2.7VI:3.4VJ:2.85V
K:
3.7VL:1.5V
M:
1.8VN:2.9VO:3.1V
P:
4.1VQ:4.75V
R:
2.65V
S:
5.0VT:1.2VU:3.2VV:3.15V
W:
2.3V
Y:
1.9VZ:1.7V
AME8803 / 8814
n Pin Configuration
SOT-26
Top View
645
AME8803
132
n Ordering Information
AME8803 x x xx x
AME8814 x x xx x
AME 8803
1. V
IN
2. GND
3. EN
4. PG
5. BYP
6. V
OUT
* Die Attach:
Non-Conductive Epoxy
SOT-26
Top View
645
AME8814
132
300mA CMOS LDO
AME 8814
1. EN
2. GND
3. BYP
4. V
OUT
5. GND
6. V
IN
* Die Attach:
Conductive Epoxy
Product Grade
or Option
Operating
Temperature
Range
Package Type
Special Feature
Number of Pins
Package Type
Operating Temperature Range
Product Grade or Option
Number
of
Pins
Special Feature
2
Page 3
AME, Inc.
AME8803 / 8814
300mA CMOS LDO
n Ordering Information (contd.)
Part NumberMarking*Output VoltagePackageOperating Temp. Range
Note: ww represents the date code and pls refer to Date Code Rule before Package Dimension.
* A line on top of the first character represents lead free plating such as AAP
Please consult AME sales office or authorized Rep./Distributor for output voltage and package type availability.
3
Page 4
AME, Inc.
AME8803 / 8814
300mA CMOS LDO
n Ordering Information (contd.)
Part NumberMarking*Output VoltagePackageOperating Temp. Range
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
+ 0.3V
IN
n Recommended Operating Conditions
ParameterRatingUnit
Ambient Temperature Range- 40 to + 85
Junction Temperature- 40 to + 125
o
C
o
C
n Thermal Information
ParameterPackageDie AttachSymbolMaximumUnit
Thermal Resistance*
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
Internal Power Dissipation
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
SOT-26
Conductive Epoxy81
θ
Non-Conductive
Epoxy
Conductive Epoxy260
Non-Conductive
Epoxy
Conductive Epoxy400
Non-Conductive
Epoxy
JA
140
θ
JC
280
P
D
400
150
300
o
C / W
mW
o
C
8
Page 9
AME, Inc.
IN
O
O
LIM
SC
EH
EL
EH
OL
SINK
O(NOM)
O(NOM)
O(NOM)
AME8803 / 8814
n Electrical Specifications
TA = 25OC unless otherwise noted
ParameterSymbolMinTyp MaxUnits
Input Voltage V
Output Voltage Accuracy V
Dropout VoltageV
DROPOUT
IO=300mA
VO=V
O(NOM)
Output Current I
Current LimitI
Short Circuit Current I
Quiescent CurrentI
Ground Pin Current I
Line Regulation REG
Load Regulation REG
Q
GND
LOAD
LINE
IO=1mA
VIN=VO+1 to VO+2
Over Temperature Shutdown OTS150
Over Temperature Hysterisis OTH30
VO Temperature CoefficientTC30
Power Supply Rejection
IO=100mA
CO=2.2µF
f=10Hz to 100kHz
Output Voltage Noise eN
IO=10mA
Test Condition
IO=1mA
1.2V<=V
-2.0%
2.0V<V
O(NOM)
2.8V<V
VO>1.2V
VO>1.2V
VO<0.8V
IO=0mA
IO=1mA to 300mA
1.2V <= VO <= 1.4V-0.20.2
1.4V < VO <= 2.0V-0.150.15
2.0V< VO < 4.0V-0.10.020.1
4.0V <= Vo
IO=1mA to 300mA
f=1kHz50
f=10kHz20
f=100kHz15
Co=2.2µF
Note 17V
-1.51.5%
<=2.0V1300
O(NOM)
<=2.8V400
O(NOM)
300mA
300450mA
-0.40.20.4
-10.21%
300mA CMOS LDO
See
chart
300
150300mA
3050µA
35µA
30
mV
%
o
C
o
C
ppm/oC
dBPSRR
µVrms
EN Input Threshold
EN Input Bias Current
Shutdown Supply CurrentI
Shutdown Output VoltageV
Output Under Voltage V
Output Over Voltage V
PG Leakage CurrentI
PG Voltage Rating V
PG Voltage LowV
Note1: V
IN(MIN)=VOUT+VDROPOUT
V
V
I
I
EL
SD
O,SD
LC
UV
OV
PG
VIN=2.7V to 7V
VIN=2.7V to 7V
VEN=VIN, VIN=2.7V to 7V
VEN=0V, VIN=2.7V to 7V
VIN=5V, VO=0V, VEN<V
IO=0.4mA, VEN<V
2.5V <= V
1.2V <= V
2.5V <= V
1.2V <= V
O(NOM)
EL
<= 5.0V
< 2.5V
<= 5.0V
< 2.5V
VPG=7V
VO in regulation
I
=0.4mA
EL
2.0VinV
00.4V
0.1µA
0.5µA
0.51µA
00.4V
85
%V
75
115
125
%V
1µA
7V
0.4V
O(NOM)
O(NOM)
Note2: To prevent the Short Circuit Current protection feature from being prematurely activated, the input voltage must be
applied before a current source load is applied.
9
Page 10
AME, Inc.
AME8803 / 8814
n Detailed Description
The AME8803/8814 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, thermal shutdown, and
Power Good detection circuitry.
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 AME8803/8814 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The AME8803 also incorporates current foldback to reduce power dissipation
when the output is short circuited. This feature becomes
active when the output drops below 0.8volts, and reduces
the current flow by 65%. Full current is restored when
the voltage exceeds 0.8 volts.
300mA CMOS LDO
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.
n Enable
The Enable pin normally floats high. When actively,
pulled low, the PMOS pass transistor shuts off, and all
internal circuits are powered down. In this state, the
quiescent current is less than 1µA. This pin behaves
much like an electronic switch.
n Power Good
The AME8803/8814 includes the Power Good feature.
When the output is not within +15% of the specified voltage, it pulls low. This can occur under the following conditions:
1) Input Voltage too low.
2) During Over-Temperature.
3) During Over-Current.
4) If output is pulled up.
n External Capacitors
The AME8803/8814 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 0.1µF ce-
ramic capacitor with a 10µF 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.
A third capacitor can be connected between the BYPASS pin and GND. This capacitor can be a low cost
Polyester Film variety between the value of 0.001 ~
0.01µF. A larger capacitor improves the AC ripple rejection, but also makes the output come up slowly. This
"Soft" turn-on is desirable in some applications to limit
turn-on surges.
(Note: PG pin is an open-drain output.)
10
Page 11
AME, Inc.
AME8803 / 8814
Ground Current vs. Input Voltage Load Step (1mA-300mA)
Carrier Tape, Number of Components Per Reel and Reel Size
PackageCarrier Width (W)Pitch (P)Part Per Full ReelReel Size
W
16
SOT-268.0±0.1 mm4.0±0.1 mm3000pcs180±1 mm
Page 17
AME, Inc.
AME8803 / 8814
n Tape and Reel Dimension
TSOT-26
P
AMEAME
PIN 1
Carrier Tape, Number of Components Per Reel and Reel Size
PackageCarrier Width (W)Pitch (P)Part Per Full ReelReel Size
300mA CMOS LDO
W
TSOT-268.0±0.1 mm4.0±0.1 mm3000pcs180±1 mm
17
Page 18
AME, Inc.
AME8803 / 8814
n Package Dimension
SOT-26
Top View
D
e
E
H
S1
Front View
300mA CMOS LDO
Side View
SYMBOLS
L
A
A
1
b0.300.550.01180.0217
D2.703.100.10630.1220
θ1
E1.401.800.05510.0709
e
H2.603.000.10236 0.11811
L
θ 10
A
S
1
MILLIMETERSINCHES
MINMAXMINMAX
1.20REF0.0472REF
0.000.150.00000.0059
1.90 BSC0.0748 BSC
0.37REF0.0146REF
o
0.95REF0.0374REF
10
o
o
0
10
o
TSOT-26
E
H
b
Top View
Front View
A1
Side View
D
e
L
SYMBOLS
A+A
1
MILLIMETERSINCHES
MINMAXMINMAX
0.901.250.03540.0492
b0.300.500.01180.0197
c0.090.250.00350.0098
D2.703.100.10630.1220
θ1
S1
A
E1.401.800.05510.0709
e
1.90 BSC0.07480 BSC
H2.403.000.09449 0.11811
L
θ 1
S
1
0.35BSC0.0138BSC
o
0
10
o
o
0
0.95BSC0.0374BSC
10
o
18
b
A1
Page 19
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. , November 2005
Document: 2006-DS8803/8814-H
Corporate HeadquarterU.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. 95054-2046
Tel: 886 2 2627-8687 Tel : (408) 988-2388
Fax: 886 2 2659-2989Fax: (408) 988-2489
Page 20
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