AME, Inc.
AME8844
750mA CMOS LDO
n
General Description
The AME8844 family of positive, linear regulators fea-
ture low quiescent current (45µA typ.) with low dropout
voltage, making them ideal for battery applications.
Output voltages are set at the factory and trimmed to
1.5% accuracy.
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.
The AME8844 is stable with an output capacitance of
4.7µF or greater.
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Functional Block Diagram
(Fixed Versions)
IN
Overcurrent
Shutdown
OUT
Thermal
Shutdown
EN
Vref x115%
PG
R1
AMP
R2
Vref x85%
Vref
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Features
l
l
l
l
l
l
l
l
l
l
l
l
l
l
Very Low Dropout Voltage
Guaranteed 750mA Output
Accurate to within 1.5%
45µA Quiescent Current Typically
Over-Temperature Shutdown
Current Limiting
Short Circuit Current Fold-back
Noise Reduction Bypass Capacitor (Fixed
Versions)
Power-Saving Shutdown Mode
Space-Saving MSOP-8 Package
6 Factory Pre-set Output Voltages
Low Temperature Coefficient
Adjustable Version
Power Good Output Function.
GND
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Functional Block Diagram
(Adjustable Version)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
AMP
R1
EN
ADJ
(external)
1.242V
R2
(external)
GND
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Typical Applications
IN
IN
OUT
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Applications
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Instrumentation
Portable Electronics
Wireless Devices
PC Peripherals
Battery Powered Widgets
OUT
AME8844
PG
GND
EN
C1
5V
1µF
µ
C3
4.7µF
µ
1
AME, Inc.
AME8844
750mA CMOS LDO
n
Pin Configuration
MSOP-8
Top View
8
7
6
5
MSOP-8
Top View
AME 8844AEQAxxx
1. EN
2. V
IN
3. PG
4. V
OUT
5. GND
6. GND
7. GND
8. GND
8
7
6
5
AME 8844BEQAADJ
1. EN
2. V
IN
3. ADJ
4. V
OUT
5. GND
6. GND
7. GND
8. GND
8844
Xyww
8844
Byww
1
2
3
4
1
2
3
4
Note:
X: represents the regulator output voltage.
yww: represents the date code.
Please contact AME for details.
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Ordering Information
AME8844 AEQA xxx
Voltage
150: V=1.5V
180: V=1.8V
250: V=2.5V
330: V=3.3V
Pin Out Types
[Package Type]
Q:MSOP-8
[Pin Count]
A:8
AME8844 BEQA ADJ
Voltage
ADJ: Adjustable
Pin Out Types
[Package Type]
Q:MSOP-8
[Pin Count]
A:8
Operating
Temperature
E:-40
o
C to 85
o
C
Operating
Temperature
E:-40
o
C to 85
o
C
2
AME, Inc.
AME8844
750mA CMOS LDO
n
Ordering Information (contd.)
Part Number
AME8844AEQA150
Marking
8844
Lyww
8844
Myww
8844
Dyww
8844
Ayww
8844
Byww
Output Voltage
1.50
Package
MSOP-8
Operating Temp. Range
- 40
o
C to + 85
o
C
AME8844AEQA180
1.80
MSOP-8
- 40
o
C to + 85
o
C
AME8844AEQA250
2.50
MSOP-8
- 40
o
C to + 85
o
C
AME8844AEQA330
3.30
MSOP-8
- 40
o
C to + 85
o
C
AME8844BEQAADJ
ADJ
MSOP-8
- 40
o
C to + 85
o
C
Note: ww represents the date code
Please consult AME sales office or authorized Rep./Distributor for other output voltage and package type availability.
3
AME, Inc.
AME8844
750mA CMOS LDO
n
Absolute Maximum Ratings
Parameter
Input Voltage
Output Current
Output Voltage
ESD Classification
Maximum
8
Unit
V
mA
V
P
D
/ (V
IN
- V
O
)
GND - 0.3 to V
IN
+ 0.3
B
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
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Recommended Operating Conditions
Parameter
Ambient Temperature Range
Junction Temperature
Rating
- 40 to + 85
- 40 to + 125
Unit
o
C
C
o
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Thermal Information
Parameter
Thermal Resistance (
θ
jc
)
Internal Power Dissipation (P
D
)
(
∆
T = 100
o
C)*
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
MSOP-8
MSOP-8
150
300
Maximum
80
Unit
o
C/W
W
o
C
C
o
* Assuming a heat sink capable of twice times (θjc)
** Estimated
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