AME, Inc.
AME8824
300mA CMOS LDO
n
General Description
The AME8824 family of positive, linear regulators fea-
ture low quiescent current (30µA typ.) with low dropout
voltage, making them ideal for battery applications. The
space-saving SOT-26 package are 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.
The SOT-26 version also features a "Power Good" de-
tector, which pulls low when the output is out of regula-
tion.
The AME8824 is stable with an output capacitance of
2.2µF or greater.
n
Functional Block Diagram
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
EN
Vref x110%
PG
ADJ
AMP
n
Features
l
Very Low Dropout Voltage
l
Guaranteed 300mA Output
l
Typical accuracy within 2%
l
30µA Quiescent Current
l
Over-Temperature Shutdown
l
Current Limiting
l
Short Circuit Current Fold-back
l
Power Good Detector (6 pin version only)
l
Power-Saving Shutdown Mode
l
Space-Saving SOT-26
l
Adjustable Output Voltages
l
Low Temperature Coefficient
IN
Vref x90%
Vref =1.2V
GND
n
Typical Application
EN
IN
PG
OUT
OUT
C2
R1
100p
C3
2.2µF
R2
AME8824
GND
ADJ
C1
5V
1µF
n
Applications
l
Instrumentation
l
Portable Electronics
l
Wireless Devices
l
Cordless Phones
l
PC Peripherals
l
Battery Powered Widgets
l
Electronic Scales
V
OUT
= 1.2 (R1 +R2)/R2
C2 is unnecessary when R1 or R2 < 20K
PG pin is only available in the SOT-26 package option
1
AME, Inc.
AME8824
300mA CMOS LDO
n
Ordering Information (contd.)
Part Number
AME8824AEEY
AME8824AEEYL
AME8824AEEYY
AME8824AEEYZ
Marking
AUEww
AUEww
AUEww
AUEww
Output Voltage
ADJ
ADJ
ADJ
ADJ
Package
SOT-26
TSOT-26
TSOT-26
SOT-26
Operating Temp. Range
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
- 40
o
C to + 85
o
C
ww: represents the date code
* A line on top of the first character represents lead free plating
Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type.
n
Absolute Maximum Ratings
Parameter
Input Voltage
Output Current
Input, Output Voltage
ESD Classification
Maximum
8
P
D
/ (V
IN
- V
O
)
GND - 0.3 to V
IN
+ 0.3
B
Unit
V
mA
V
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
n
Recommended Operating Conditions
Parameter
Ambient Temperature Range
Junction Temperature
Rating
- 40 to + 85
- 40 to + 125
Unit
o
C
C
o
n
Thermal Information
Parameter
Thermal Resistance (θ
ja
)
Internal Power Dissipation (P
D
)
(∆T = 100
o
C)
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
4
Maximum
SOT-26
SOT-26
260
380
150
300
Unit
o
C/W
mW
o
C
C
o
AME, Inc.
AME8824
300mA CMOS LDO
n
Electrical Specifications
TA = 25
O
C, V
IN
=5V unless otherwise noted
Parameter
Input Voltage
Output Voltage
Dropout Voltage
Output Current
Current Limit
Short Circuit Current
Quiescent Current
Ground Pin Current
Line Regulation
Load Regulation
Over Temerature Shutdown
Over Temerature Hysterisis
V
O
Temperature Coefficient
Power Supply Rejection
Symbol
V
IN
V
O
V
DROPOUT
I
O
I
LIM
I
SC
I
Q
I
GND
REG
LINE
REG
LOAD
OTS
OTH
TC
PSRR
I
O
=100mA
C
O
=2.2µF
f=10Hz to 100kHz
I
O
=10mA,C
BYP
=0µF
f=1kHz
f=10kHz
f=100kHz
Co=2.2µF
I
O
=5mA
V
IN
=V
O
+1 to V
O
+2
I
O
=300mA
V
O
=V
ONOM
-2.0%
I
O
=1mA
1.2V<=V
O(NOM)
<=2.0V
2.0V<V
O(NOM)
<=2.8V
2.8V<V
O(NOM)
<3.8V
300
300
450
150
30
35
0.15
0.02
0.2
150
30
30
50
20
15
30
1
1.176
V
IN
=2.7V to 7V
V
IN
=2.7V to 7V
V
EN
=V
IN
, V
IN
=2.7V to 7V
V
EN
=0V, V
IN
=2.7V to 7V
V
IN
=5V, V
O
=0V, V
EN
<V
EL
I
O
=35µA,V
EN
<V
EL
0
115
V
PG
=7V
V
O
in regulation
I
SINK
=0.4mA
1
7
0.4
0.5
2.0
0
1.2
1.224
Vin
0.4
0.1
0.5
1
0.1
85
µVrms
µA
V
V
V
µA
µA
µA
V
%V
O(NOM)
%V
O(NOM)
µA
V
V
dB
0.1
1
V
O
< 2.0V
V
O
>= 2.0V
300
50
Test Condition
Min
Note 1
-3
Typ
Max
7
3
1300
400
300
mA
mA
mA
µA
µA
%
%
%
o
o
Units
V
%
mV
V
O
>1.2V
V
O
>1.2V
V
O
<0.8V
I
O
=0mA
I
O
=1mA to 300mA
I
O
=1mA to 300mA
C
C
ppm/
o
C
Output Voltage Noise
ADJ Input Bias Current
ADJ Reference Voltage
EN Input Threshold
EN Input Bias Current
Shutdown Supply Current
Shutdown Output Voltage
Output Under Voltage
Output Over Voltage
PG Leakage Current
PG Voltage Rating
PG Voltage Low
eN
I
ADJ
V
REF
V
EH
V
EL
I
EH
I
EL
I
SD
V
O
,
SD
V
UV
V
OV
I
LC
V
PG
V
OL
Note1:V
IN(min)
=V
OUT
+V
DROPOUT
5
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