AME
AME8855A
n
General Description
The AME8855A family of positive, CMOS linear regula-
tors provide low dropout voltage(420mV@600mA), low
quiescent current, and low noise CMOS LDO. These
rugged devices have both Thermal Shutdown, and Cur-
rent limit to prevent device failure under the "Worst" of
operating conditions.
High PSRR, Low Noise, 600mA
CMOS Regulator
n
Typical Application
IN
IN
OUT
OUT
AME8855 A
EN
C
IN
1µF
GND
C
OUT
1µF
n
Features
l
Low Dropout Voltage: 420mV@600mA
l
Guaranteed Current: 600mA
l
Quiescent Current: 60µA (typ.)
l
Over-Temperature Shutdown
l
Current Limiting protection
l
PSRR:60dB@10KHz
l
Ultra-Low-Noise: 100µV
RMS
at 1Hz to 100KHz
l
Low Temperature Coefficient
l
Input Voltage Range 2.8V~5.5V
l
Output Voltage Range: 0.8V ~ 4.3V
l
Green Products Meet RoHS Standards
Thermal
Shutdown
EN
R1
Overcurrent
Shutdown
IN
OUT
n
Functional Block Diagram
n
Applications
l
Instrumentation
l
Portable Electronics
l
Wireless Devices
l
Cordless Phones
l
PC Peripherals
l
Battery Powered Widgets
-
AMP
+
R2
Vref
GND
Rev. B.02
1
AME
AME8855A
n
Pin Configuration
3 Pin
SOT-223
Top View
AME8855A-AGTxxx
1. IN
AME8855 A
High PSRR, Low Noise, 600mA
CMOS Regulator
SOT-223
Top View
AME8855A-BGTxxx
1. GND
AME8855 A
2. GND (TAB)
3. OUT
2. OUT (TAB)
3. IN
1
2
3
* Die Attach:
Conductive Epoxy
1
2
3
* Die Attach:
Non-Conductive Epoxy
SOT-89
Top View
AME8855A-AFTxxx
1. IN
AME8855A
SOT-89
Top View
AME8855A-BFTxxx
1. GND
AME8855A
2. GND (TAB)
3. OUT
2. OUT (TAB)
3. IN
1
2
3
* Die Attach:
Conductive Epoxy
1
2
3
* Die Attach:
Non-Conductive Epoxy
SOT-89
Top View
AME8855A-CFTxxx
1. GND
AME8855A
2. IN (TAB)
3. OUT
1
2
3
* Die Attach:
Non-Conductive Epoxy
2
Rev. B.02
AME
AME8855A
Pin Configuration (Contd.)
3 Pin
High PSRR, Low Noise, 600mA
CMOS Regulator
SOT-23
Top View
3
SOT-23
Top View
AME8855A-AETxxx
1. IN
2. GND
3. OUT
* Die Attach:
Non-Conductive Epoxy
3
AME8855A-BETxxx
1. GND
2. OUT
3. IN
* Die Attach:
Non-Conductive Epoxy
AME8855 A
AME8855 A
1
2
1
2
5 Pin
8 Pin
SOT-25
Top View
SOP-8
Top View
5
4
AME8855A
AME8855A-AEVxxx
1. IN
2. GND
3. EN
4. NC
5. OUT
* Die Attach:
Conductive Epoxy
8
7
6
5
AME8855
A
1
2
3
1
2
3
4
AME8855A-AHAxxx
1. IN
2. GND
3. GND
4. OUT
5. NC
6. GND
7. GND
8. EN
* Die Attach:
Conductive Epoxy
Rev. B.02
3
AME
AME8855A
n
Pin Description
SOT-223
High PSRR, Low Noise, 600mA
CMOS Regulator
Pin Number
A
1
Pin Name
B
3
IN
Pin Description
Input voltage pin; should be decoupled with 1µF or greater
capacitor.
2
1
GND
Ground connection pin.
3
2
OUT
LDO voltage regulator output pin; should be decoupled with a 1.0µF
or greater value low ESR ceramic capacitor.
SOT-89
Pin Number
A
1
Pin Name
C
2
IN
Pin Description
B
3
Input voltage pin; should be decoupled with 1µF or greater
capacitor.
2
1
1
GND
Ground connection pin.
3
2
3
OUT
LDO voltage regulator output pin; should be decoupled with a 1.0µF
or greater value low ESR ceramic capacitor.
4
Rev. B.02
AME
AME8855A
n
Pin Description
SOP-8
High PSRR, Low Noise, 600mA
CMOS Regulator
Pin Name
IN
Pin Description
Input voltage pin; should be decoupled with 1µF or greater capacitor.
GND
Ground connection pin.
GND
Ground connection pin.
OUT
LDO voltage regulator output pin; should be decoupled with a 1.0µF or greater value low ESR
ceramic capacitor.
NC
No connection.
GND
Ground connection pin.
GND
Ground connection pin.
Enable pin, Active “high". When pulled “low”, the PMOS pass transistor turns off, current
consuming less than 1µA. When EN pin floating outside, it’s weakly pulled low by internal small
current source .
EN
Rev. B.02
5
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