AME
AME8826
n
General Description
The AME8826 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" operating conditions.
In applications requiring a low noise, regulated supply,
place a 1000pF capacitor between Bypass and Ground.
1.242V
R2
GND
1.55A CMOS LDO
n
Functional Block Diagram
(Fixed Versions)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
R1
BYPASS
AMP
EN
The AME8826 is stable with an output capacitance of
4.7µF or greater.
n
Features
l
Very Low Dropout Voltage
l
Guaranteed 1.55A Output
l
Accurate to within 1.5%
l
45µA Quiescent Current Typically
l
Over-Temperature Shutdown
l
Current Limiting
l
Noise Reduction Bypass Capacitor (Fixed
Versions)
l
Power-Saving Shutdown Mode
l
Low Temperature Coefficient
l
Adjustable Version
l
All AME’ s Lead Free Products Meet RoHS
Standards
(Adjustable Version)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
AMP
R1
EN
ADJ
(external)
1.242V
R2
(external)
GND
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Typical Application
IN
IN
OUT
OUT
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Applications
l
Instrumentation
l
Portable Electronics
l
Wireless Devices
l
PC Peripherals
l
Battery Powered Widgets
5V 1µF
C1
C2
AME8826
BYP
GND
EN
C3
4.7µF
1000pF
Rev.D.04
1
AME
AME8826
n
Pin Description
Pin Name
IN
GND
Pin Description
Input voltage pin.
It should be decoupled with 1µF or greater capacitor.
Ground connection pin.
Enable pin.
When pulled low, the PMOS pass transistor turns off, current consuming less
than 1µA.
Bypass capacitor connection.
To improve AC ripple rejection, connect a 1000pF capacitor to GND.
This will also provide a soft-start function.
LDO voltage regulator output pin.
It should be decoupled with a 4.7µF or greater value low ESR ceramic capacitor.
Feedback output voltage for adjustable device.
1.55A CMOS LDO
EN
BYP
OUT
ADJ
Rev.D.04
3
AME
AME8826
n
Ordering Information (contd.)
Part Number
AME8826AEDV150
1.55A CMOS LDO
Marking*
AME8826
AEDV150
yyww
AME8826
AEDV150
yyww
AME8826
AEDV180
yyww
AME8826
AEDV180
yyww
AME8826
AEDV250
yyww
AME8826
AEDV330
yyww
AME8826
AEDV475
yyww
AME8826
AEDV500
yyww
AME8826
BEDVADJ
yyww
AME8826
BEDVADJ
yyww
Output Voltage
1.50
Package
TO-263-5
Operating Ambient
Temperature Range
- 40
o
C to +85
o
C
AME8826AEDV150Z
1.50
TO-263-5
- 40
o
C to +85
o
C
AME8826AEDV180
1.80
TO-263-5
- 40
o
C to +85
o
C
AME8826AEDV180Z
1.80
TO-263-5
- 40
o
C to +85
o
C
AME8826AEDV250Z
2.50
TO-263-5
- 40
o
C to +85
o
C
AME8826AEDV330Z
3.30
TO-263-5
- 40
o
C to +85
o
C
AME8826AEDV475Z
4.75
TO-263-5
- 40
o
C to +85
o
C
AME8826AEDV500Z
5.00
TO-263-5
- 40
o
C to +85
o
C
AME8826BEDVADJ
ADJ
TO-263-5
- 40
o
C to +85
o
C
AME8826BEDVADJZ
ADJ
TO-263-5
- 40
o
C to +85
o
C
Note: yyww represents the date code
* A line on top of the first letter represents lead free plating such as AME8826
Please consult AME sales office or authorized Rep./Distributor for output voltage and package type availability.
Rev.D.04
5
嵌入式系统
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