AME
AME8843
n
General Description
The AME8843 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-223 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" operating conditions.
The AME8843 is stable with an output capacitance of
2.2µF or greater.
750mA CMOS LDO
n
Functional Block Diagram
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
R1
AMP
V
ref
=1.215V
R2
GND
n
Features
l
Very Low Dropout Voltage
l
Guaranteed 750mA 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-223 Package
l
Factory Pre-set Output Voltages
l
Low Temperature Coefficient
l
All AME's Lead Free Products Meet RoHS
Standards
5V
1µF
C1
IN
IN
n
Typical Application
OUT
AME8843
OUT
GND
C2
2.2µF
n
Applications
l
Instrumentation
l
Portable Electronics
l
Wireless Devices
l
Cordless Phones
l
PC Peripherals
l
Battery Powered Widgets
Rev. A.02
1
AME
AME8843
n
Pin Configuration
SOT-223
Top View
AME8843
1. IN
2. GND(TAB)
3. OUT
* Die Attach:
Conductive Epoxy
750mA CMOS LDO
AME8843
1
2
3
n
Pin Description
Pin Number
1
2
Pin Name
IN
GND
Pin Description
Input voltage pin.
It should be decoupled with 1µF or greater capacitor.
Ground connection pin.
LDO voltage regulator output pin.
It should be decoupled with a 2.2µF or greater value low ESR
ceramic capacitor.
3
OUT
2
Rev. A.02
AME
AME8843
n
Ordering Information
AME8843 x x x x xxx x
Special Feature
Output Voltage
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
750mA CMOS LDO
Pin
Configuration
Operating Ambient
Number
Temperature
Package Type
Output Voltage
of
Range
Pins
E: -40
O
C to +85
O
C
G: SOT-223
T: 3
180: V=1.8V
250: V=2.5V
Special Feature
A: 1. IN
(SOT-223)
2. GND
3. OUT
Z: Lead Free
n
Ordering Information
Part Number
AME8843AEGT180
AME8843AEGT180Z
AME8843AEGT250
AME8843AEGT250Z
Marking*
AWZyww
AWZyww
AWFyww
AWFyww
Output Voltage
1.8V
1.8V
2.5V
2.5V
Package
SOT-223
SOT-223
SOT-223
SOT-223
Operating Ambient
Temperature 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
Note: yww represents the date code
* A line on top of the first character represents lead free plating such as AWZww.
Please consult AME sales office or authorized Rep./Distributor for the availability of output voltage and package type.
Rev. A.02
3
AME
AME8843
n
Absolute Maximum Ratings
Parameter
Input Voltage
Output Voltage
Output Current
ESD Classification
750mA CMOS LDO
Maximum
-0.3 to +8
-0.3 to V
IN
+ 0.3
P
D
/ (V
IN
- V
OUT
)
B*
Unit
V
V
mA
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device.
* HBM B:2000V~3999V
n
Recommended Operating Conditions
Parameter
Ambient Temperature Range
Junction Temperature Range
Storage Temperature Range
Symbol
T
A
T
J
T
STG
Rating
- 40 to +85
- 40 to +125
- 65 to +150
Unit
o
C
C
C
o
o
n
Thermal Information
Parameter
Thermal Resistance*
( Junction to Case)
Thermal Resistance
( Junction to Ambient)
Internal Power Dissipation
Maximum Junction Temperature
Solder Iron (10 Sec)**
SOT-223
Conductive Epoxy
Package
Die Attach
Symbol
θ
JC
θ
JA
P
D
Maximum
25
Unit
o
C/W
120
900
150
350
mW
o
C
C
o
* Measure
θ
JC
on backside center of tab.
** MIL-STD-202G 210F
4
Rev. A.02
AME
AME8843
n
Electrical Specifications
T
A
= 25
O
C unless otherwise noted
Parameter
Input Voltage
Output Voltage Accuracy
Symbol
V
IN
V
O
I
O
=750mA
V
O
=V
O(NOM)
-2.0%
I
O
=1mA
1.3V<=V
O(NOM)
<=1.4V
Dropout Voltage
V
DROPOUT
1.4V<V
O(NOM)
<=2.0V
2.0V<V
O(NOM)
<=2.8V
2.8V<V
O(NOM)
Output Current
Current Limit
Short Circuit Current
Quiescent Current
Ground Pin Current
I
O
I
LIM
I
SC
I
Q
I
GND
V
O
>1.2V
V
O
>1.2V
V
O
<0.8V
I
O
=0mA
I
O
=1mA to 750mA
1.3V <= V
O
<= 1.4V
Line Regulation
REG
LINE
I
O
=1mA
V
IN
=V
O
+1 to V
O
+2
1.4V < V
O
<= 2.0V
2.0V < V
O
< 4.0V
4.0V <= V
O
Load Regulation
Over Temperature Shutdown
Over Temperature Hysterisis
V
O
Temperature Coefficient
Power Supply Rejection
REG
LOAD
OTS
OTH
TC
PSRR
I
O
=100mA
C
O
=2.2µF
f=10Hz to 100kHz
I
O
=10mA,C
BYP
=0µF
f=100Hz
f=1kHz
f=10kHz
Co=2.2µF
I
O
=1mA to 750mA
-0.2
-0.15
-0.1
-0.4
0.02
0.2
0.2
150
30
30
60
50
20
30
µVrms
dB
750
1500 2000
750
30
35
0.2
0.15
0.1
0.4
1
%
o
o
750mA CMOS LDO
Test Condition
Min
Note 1
-1.5
Typ
Max
7
1.5
1900
Units
V
%
See 1400
chart 1000
750
mV
mA
mA
mA
50
µA
µA
%
C
C
ppm/
o
C
Output Voltage Noise
eN
Note1: V
IN(MIN)
=V
OUT
+V
DROPOUT
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.
Rev. A.02
5
微控制器 MCU
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