AME, Inc.
AME8826
1.55A CMOS LDO
!
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" of operating conditions.
In applications requiring a low noise, regulated supply,
place a 1000pF capacitor between Bypass and Ground.
The AME8826 is stable with an output capacitance of
4.7µF or greater.
!
Functional Block Diagram
(Fixed Versions)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
R1
BYPASS
AMP
EN
1.242V
R2
GND
!
Features
"
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"
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Very Low Dropout Voltage
Guaranteed 1.55A Output
Accurate to within 1.5%
45µA Quiescent Current Typically
Over-Temperature Shutdown
Current Limiting
Noise Reduction Bypass Capacitor (Fixed
Versions)
Power-Saving Shutdown Mode
Space-Saving DDPAK-5, SO-8 Package
6 Factory Pre-set Output Voltages
Low Temperature Coefficient
Adjustable Version
!
Functional Block Diagram
(Adjustable Version)
IN
OUT
Overcurrent
Shutdown
Thermal
Shutdown
AMP
EN
ADJ
(external)
R1
1.242V
(external)
R2
GND
!
Typical Application
IN
IN
BYP
GND
OUT
OUT
!
Applications
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Instrumentation
Portable Electronics
Wireless Devices
PC Peripherals
Battery Powered Widgets
C1
5V 1µF
µ
C2
1nF
AME8826
EN
C3
4.7µF
µ
1
AME, Inc.
AME8826
1.55A CMOS LDO
!
Ordering Information (contd.)
Part Number
AME8826AEHA500
Marking
AME8826
AEHA500
yyww
AME8826
BEHAADJ
yyww
AME8826
CEHAADJ
yyww
Output Voltage
5.00
Package
SO-8
Operating Temp. Range
- 40
o
C to + 85
o
C
AME8826BEHAADJ
ADJ
SO-8
- 40
o
C to + 85
o
C
AME8826CEHAADJ
ADJ
SO-8
- 40
o
C to + 85
o
C
Please consult AME sales office or authorized Rep./Distributor for other output voltage and package type availability.
4
AME, Inc.
AME8826
1.55A CMOS LDO
!
Absolute Maximum Ratings
Parameter
Input Voltage
Output Current
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
!
Recommended Operating Conditions
Parameter
Ambient Temperature Range
Junction Temperature
Rating
- 40 to + 85
- 40 to + 125
Unit
o
o
C
C
!
Thermal Information
Parameter
Thermal Resistance (
θ
jc
)
TO-263 (DDPAK-5)
SO-8
TO-263 (DDPAK-5)
SO-8
Maximum
5
20**
3.00
2.5
150
300
Unit
o
C/W
Internal Power Dissipation (P
D
)
(
∆
T = 100
o
C)*
Maximum Junction Temperature
Maximum Lead Temperature (10 Sec)
W
o
o
C
C
* Assuming a heat sink capable of twice times (θjc)
** Estimated
5
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